fix lint error

* Proof-of-concept pre-built custom sql.js

* Rewrite Makefile as a couple of comprehensible Python scripts

* Add link to a blog post about transitive closure in SQLite

* Remove eval extension -- no much point as it only returns a string

* Consistently use existing Path objects

* Add basic tests scalar functions from extension-functions.c

* Test presence of functions from the rest of built extensions

* Use the same sqlite.com domain

* Add a couple SQLite compile flags that may make it a bit faster

* Add regexpi function test

* Add node about regexpi and REGEXP operator

* Workaround first build failure, rebuild lock file and minor fixes

.github/workflows/config.grenrc.js

@@ -0,0 +1,17 @@
+module.exports = {
+  dataSource: 'milestones',
+  ignoreIssuesWith: [
+    'wontfix',
+    'duplicate'
+  ],
+  milestoneMatch: 'v{{tag_name}}',
+  template: {
+    issue: '- {{name}} [{{text}}]({{url}})',
+    changelogTitle: "",
+    release: "{{body}}",
+  },
+  groupBy: {
+    'Enhancements': ["enhancement", "internal"],
+    'Bug fixes': ["bug"]
+  }
+}

.github/workflows/main.yml

@@ -15,6 +15,10 @@ jobs:
       uses: actions/setup-node@v1
       with:
         node-version: 10.x
+
+    - name: Update npm
+      run: npm install -g npm@7
+
     - name: npm install and build
       run: |
         npm install
@@ -25,16 +29,26 @@ jobs:
         cd dist
         zip -9 -r  dist.zip . -x "js/*.map"
 
+    - name: Create Release Notes
+      run: |
+        npm install github-release-notes@0.16.0 -g
+        gren changelog --generate  --config="/.github/workflows/config.grenrc.js"
+      env:
+        GREN_GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
     - name: Create release
       uses: ncipollo/release-action@v1
       with:
         artifacts: "dist/dist.zip"
         token: ${{ secrets.GITHUB_TOKEN }}
+        bodyFile: "CHANGELOG.md"
 
     - name: Deploy 🚀
-      uses: JamesIves/github-pages-deploy-action@3.6.2
+      uses: JamesIves/github-pages-deploy-action@4.1.1
       with:
-        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        BRANCH: build # The branch the action should deploy to.
-        FOLDER: dist/ # The folder the action should deploy.
-        CLEAN: false # Automatically remove deleted files from the deploy branch
+        token: ${{ secrets.GITHUB_TOKEN }}
+        branch: build # The branch the action should deploy to.
+        folder: dist/ # The folder the action should deploy.
+        clean: true # Automatically remove deleted files from the deploy branch
+        clean-exclude: .nojekyll
+

.github/workflows/test.yml

@@ -4,6 +4,9 @@ on:
   push:
     branches:
     - 'master'
+  pull_request:
+    branches:
+    - 'master'
 
 jobs:
   test:
@@ -21,11 +24,14 @@ jobs:
         sudo apt-get update
         sudo apt-get install -y chromium-browser firefox
 
+    - name: Update npm
+      run: npm install -g npm@7
+
     - name: Install the project
       run: npm install
 
     - name: Run lint
-      run: npm run lint
+      run: npm run lint -- --no-fix
 
     - name: Run karma tests
       run: npm run test

README.md

@@ -4,20 +4,20 @@
 
 # sqliteviz
 
-Sqliteviz is a single-page PWA for fully client-side visualisation of SQLite databases or CSV files.
+Sqliteviz is a single-page offline-first PWA for fully client-side visualisation of SQLite databases or CSV files.
 
-This application allows to:
-- run SQL queries in SQLite database and create all kinds of charts based on result set
-- import CSV file into SQLite database and visualize imported data
-- save queries and chart settings
+With sqliteviz you can:
+- run SQL queries against a SQLite database and create [Plotly][11] charts based on the result sets
+- import a CSV file into a SQLite database and visualize imported data
+- manage queries and chart settings and run them against different databases
 - import/export queries and chart settings to/from a JSON file
-- manipulate saved queries (rename, duplicate, delete)
-- set predefined queries available for all users of sqliteviz on your server (read more about predefind queries on [Wiki][10])
-- export modified SQLite database
-- use it offline
+- export a modified SQLite database
+- use it offline from your OS application menu like any other desktop app
 
-## Get started
-The latest release of sqliteviz is running on [Github pages][6]. The simplest way to start is to use sqliteviz there.
+https://user-images.githubusercontent.com/24638357/117355518-fa332680-aeb2-11eb-8a69-fbcea4f7aeb0.mp4
+
+## Quickstart
+The latest release of sqliteviz is deployed on GitHub Pages at [lana-k.github.io/sqliteviz][6].
 
 ## Wiki
 For user documentation, check out sqliteviz [Wiki][7].
@@ -33,8 +33,9 @@ It is built on top of [react-chart-editor][3], [sql.js][4] and [Vue-Codemirror][
 [3]: https://github.com/plotly/react-chart-editor
 [4]: https://github.com/sql-js/sql.js
 [5]: https://github.com/vuejs/vue
-[6]: https://lana-k.github.io/sqliteviz
+[6]: https://lana-k.github.io/sqliteviz/
 [7]: https://github.com/lana-k/sqliteviz/wiki
 [8]: https://github.com/surmon-china/vue-codemirror#readme
 [9]: https://www.papaparse.com/
 [10]: https://github.com/lana-k/sqliteviz/wiki/Predefined-queries
+[11]: https://github.com/plotly/plotly.js

karma.conf.js

@@ -141,7 +141,7 @@ module.exports = function (config) {
             ]
           },
           {
-            test: /\.worker\.js$/,
+            test: /worker\.js$/,
             loader: 'worker-loader'
           },
           {

lib/sql-js/Dockerfile

@@ -0,0 +1,9 @@
+FROM emscripten/emsdk:2.0.24
+
+WORKDIR /tmp/build
+
+COPY configure.py .
+RUN python3.8 configure.py
+
+COPY build.py .
+RUN python3.8 build.py

lib/sql-js/README.md

@@ -0,0 +1,73 @@
+# SQLite WebAssembly build
+
+This directory contains Docker-based build script, `make.sh`, that builds
+a custom version of [sql.js][1]. It allows sqliteviz to have more recent
+version of SQLite build with a number of useful extensions.
+
+`Makefile` from [sql.js][1] is rewritten as more comprehensible `configure.py`
+ and `build.py` Python scripts that run in `emscripten/emsdk` Docker container.
+
+## Extension
+
+SQLite [amalgamation][2] extensions included:
+
+1. [FTS5][4] -- virtual table module that provides full-text search
+   functionality
+
+SQLite [miscellaneous extensions][3] included:
+
+1. `generate_series` table-valued [series function][6] ([series.c][7])
+2. `transitive_closure` virtual table for
+   [Querying Tree Structures in SQLite][11] ([closure.c][8])
+3. `uuid`, `uuid_str` and `uuid_blob` RFC-4122 UUID functions ([uuid.c][9])
+4. `regexp` (hence `REGEXP` operator) and `regexpi` functions ([regexp.c][10])
+
+SQLite 3rd party extensions included:
+
+1. [pivot_vtab][5] -- a pivot virtual table
+
+To ease the step to have working clone locally, the build is committed into
+the repository.
+
+## Build method
+
+Basically it's extended amalgamation and `SQLITE_EXTRA_INIT` concisely
+described in [this message from SQLite Forum][12]:
+
+> Simply append it to the end of the amalgamation file. The real problem is
+> how you get the init function called. The easiest way (to me at any rate) is
+> to append a function (after the extensions you want to add are all appended)
+> that adds the init function for each extension to the auto extension list
+> for new connections, and set the pre-processor symbol SQLITE_EXTRA_INIT to
+> the name of this function. [...]
+>
+> An example `SQLITE_EXTRA_INIT` function looks like this:
+>
+> ```
+> int core_init(const char* dummy)
+> {
+>    int nErr = 0;
+>
+>    nErr += sqlite3_auto_extension((void*)sqlite3_autobusy_init);
+>    nErr += sqlite3_auto_extension((void*)sqlite3_ipaddress_init);
+>
+>    return nErr ? SQLITE_ERROR : SQLITE_OK;
+> }
+> ```
+>
+> so you would then define `SQLITE_EXTRA_INIT=core_init` when compiling the
+> amalgamation code and the extensions would thereafter be automatically
+> initialized on each connection.
+
+[1]:  https://github.com/sql-js/sql.js
+[2]:  https://sqlite.org/amalgamation.html
+[3]:  https://sqlite.org/src/dir?ci=trunk&name=ext/misc
+[4]:  https://sqlite.org/fts5.html
+[5]:  https://github.com/jakethaw/pivot_vtab
+[6]:  https://sqlite.org/series.html
+[7]:  https://sqlite.org/src/file/ext/misc/series.c
+[8]:  https://sqlite.org/src/file/ext/misc/closure.c
+[9]:  https://sqlite.org/src/file/ext/misc/uuid.c
+[10]: https://sqlite.org/src/file/ext/misc/regexp.c
+[11]: https://charlesleifer.com/blog/querying-tree-structures-in-sqlite-using-python-and-the-transitive-closure-extension/
+[12]: https://sqlite.org/forum/forumpost/6ad7d4f4bebe5e06?raw

lib/sql-js/build.py

@@ -0,0 +1,83 @@
+import logging
+import subprocess
+from pathlib import Path
+
+
+cflags = (
+    '-O2',
+    '-DSQLITE_OMIT_LOAD_EXTENSION',
+    '-DSQLITE_DISABLE_LFS',
+    '-DSQLITE_ENABLE_FTS3',
+    '-DSQLITE_ENABLE_FTS3_PARENTHESIS',
+    '-DSQLITE_ENABLE_FTS5',
+    '-DSQLITE_ENABLE_JSON1',
+    '-DSQLITE_THREADSAFE=0',
+    '-DSQLITE_ENABLE_NORMALIZE',
+    '-DSQLITE_EXTRA_INIT=extra_init',
+    '-DSQLITE_DEFAULT_MEMSTATUS=0',
+    '-DSQLITE_USE_ALLOCA',
+)
+emflags = (
+    # Base
+    '--memory-init-file', '0',
+    '-s', 'RESERVED_FUNCTION_POINTERS=64',
+    '-s', 'ALLOW_TABLE_GROWTH=1',
+    '-s', 'SINGLE_FILE=0',
+    # WASM
+    '-s', 'WASM=1',
+    '-s', 'ALLOW_MEMORY_GROWTH=1',
+    # Optimisation
+    '-s', 'INLINING_LIMIT=50',
+    '-O3',
+    '-flto',
+    '--closure', '1',
+    # sql.js
+    '-s', 'EXPORTED_FUNCTIONS=@src/sqljs/exported_functions.json',
+    '-s', 'EXPORTED_RUNTIME_METHODS=@src/sqljs/exported_runtime_methods.json',
+    '--pre-js', 'src/sqljs/api.js',
+)
+
+
+def build(src: Path, dst: Path):
+    out = Path('out')
+    out.mkdir()
+
+    logging.info('Building LLVM bitcode for sqlite3.c')
+    subprocess.check_call([
+        'emcc',
+        *cflags,
+        '-c', src / 'sqlite3.c',
+        '-o', out / 'sqlite3.bc',
+    ])
+    logging.info('Building LLVM bitcode for extension-functions.c')
+    subprocess.check_call([
+        'emcc',
+        *cflags,
+        '-c', src / 'extension-functions.c',
+        '-o', out / 'extension-functions.bc',
+    ])
+
+    logging.info('Building WASM from bitcode')
+    subprocess.check_call([
+        'emcc',
+        *emflags,
+        out / 'sqlite3.bc',
+        out / 'extension-functions.bc',
+        '-o', out / 'sql-wasm.js',
+    ])
+
+    logging.info('Post-processing build and copying to dist')
+    (out / 'sql-wasm.wasm').rename(dst / 'sql-wasm.wasm')
+    with (dst / 'sql-wasm.js').open('w') as f:
+        f.write((src / 'sqljs' / 'shell-pre.js').read_text())
+        f.write((out / 'sql-wasm.js').read_text())
+        f.write((src / 'sqljs' / 'shell-post.js').read_text())
+
+
+if __name__ == '__main__':
+    logging.basicConfig(level='INFO', format='%(asctime)s %(levelname)s %(name)s %(message)s')
+
+    src = Path('src')
+    dst = Path('dist')
+    dst.mkdir()
+    build(src, dst)

lib/sql-js/configure.py

@@ -0,0 +1,105 @@
+import logging
+import shutil
+import subprocess
+import sys
+import zipfile
+from io import BytesIO
+from pathlib import Path
+from urllib import request
+
+
+amalgamation_url = 'https://sqlite.org/2021/sqlite-amalgamation-3360000.zip'
+
+# Extension-functions
+# ===================
+# It breaks amalgamation if appended as other extension because it redefines
+# several functions, so build it separately. Note that sql.js registers these
+# extension functions by calling ``registerExtensionFunctions`` itself.
+contrib_functions_url = 'https://sqlite.org/contrib/download/extension-functions.c?get=25'
+
+extension_urls = (
+    # Miscellaneous extensions
+    # ========================
+    ('https://sqlite.org/src/raw/c6bd5d24?at=series.c', 'sqlite3_series_init'),
+    ('https://sqlite.org/src/raw/dbfd8543?at=closure.c', 'sqlite3_closure_init'),
+    ('https://sqlite.org/src/raw/5bb2264c?at=uuid.c', 'sqlite3_uuid_init'),
+    ('https://sqlite.org/src/raw/5853b0e5?at=regexp.c', 'sqlite3_regexp_init'),
+    # Third-party extension
+    # =====================
+    ('https://github.com/jakethaw/pivot_vtab/raw/08ab0797/pivot_vtab.c', 'sqlite3_pivotvtab_init'),
+)
+
+sqljs_url = 'https://github.com/sql-js/sql.js/archive/refs/tags/v1.5.0.zip'
+
+
+def _generate_extra_init_c_function(init_function_names):
+    auto_ext_calls = '\n'.join([
+        'nErr += sqlite3_auto_extension((void*){});'.format(init_fn)
+        for init_fn in init_function_names
+    ])
+    return '''
+        int extra_init(const char* dummy)
+        {
+            int nErr = 0;
+            %s
+            return nErr ? SQLITE_ERROR : SQLITE_OK;
+        }
+    ''' % auto_ext_calls
+
+
+def _get_amalgamation(tgt: Path):
+    logging.info('Downloading and extracting SQLite amalgamation %s', amalgamation_url)
+    archive = zipfile.ZipFile(BytesIO(request.urlopen(amalgamation_url).read()))
+    archive_root_dir = zipfile.Path(archive, archive.namelist()[0])
+    for zpath in archive_root_dir.iterdir():
+        with zpath.open() as fr, (tgt / zpath.name).open('wb') as fw:
+            shutil.copyfileobj(fr, fw)
+
+
+def _get_contrib_functions(tgt: Path):
+    request.urlretrieve(contrib_functions_url, tgt / 'extension-functions.c')
+
+
+def _get_extensions(tgt: Path):
+    init_functions = []
+    sqlite3_c = tgt / 'sqlite3.c'
+    with sqlite3_c.open('ab') as f:
+        for url, init_fn in extension_urls:
+            logging.info('Downloading and appending to amalgamation %s', url)
+            with request.urlopen(url) as resp:
+                shutil.copyfileobj(resp, f)
+            init_functions.append(init_fn)
+
+        logging.info('Appending SQLITE_EXTRA_INIT to amalgamation')
+        f.write(_generate_extra_init_c_function(init_functions).encode())
+
+
+def _get_sqljs(tgt: Path):
+    logging.info('Downloading and extracting sql.js %s', sqljs_url)
+    archive = zipfile.ZipFile(BytesIO(request.urlopen(sqljs_url).read()))
+    archive_root_dir = zipfile.Path(archive, archive.namelist()[0])
+    (tgt / 'sqljs').mkdir()
+    for zpath in (archive_root_dir / 'src').iterdir():
+        with zpath.open() as fr, (tgt / 'sqljs' / zpath.name).open('wb') as fw:
+            shutil.copyfileobj(fr, fw)
+
+
+def configure(tgt: Path):
+    _get_amalgamation(tgt)
+    _get_contrib_functions(tgt)
+    _get_extensions(tgt)
+    _get_sqljs(tgt)
+
+    subprocess.check_call(['emcc', '--version'])
+
+
+if __name__ == '__main__':
+    if sys.version_info < (3, 8):
+        print('Python 3.8 or higher is expected', file=sys.stderr)
+        sys.exit(1)
+
+    logging.basicConfig(level='INFO', format='%(asctime)s %(levelname)s %(name)s %(message)s')
+
+    src = Path('src')
+    src.mkdir()
+    configure(src)

lib/sql-js/dist/sql-wasm.js

@@ -0,0 +1,201 @@
+
+// We are modularizing this manually because the current modularize setting in Emscripten has some issues:
+// https://github.com/kripken/emscripten/issues/5820
+// In addition, When you use emcc's modularization, it still expects to export a global object called `Module`,
+// which is able to be used/called before the WASM is loaded.
+// The modularization below exports a promise that loads and resolves to the actual sql.js module.
+// That way, this module can't be used before the WASM is finished loading.
+
+// We are going to define a function that a user will call to start loading initializing our Sql.js library
+// However, that function might be called multiple times, and on subsequent calls, we don't actually want it to instantiate a new instance of the Module
+// Instead, we want to return the previously loaded module
+
+// TODO: Make this not declare a global if used in the browser
+var initSqlJsPromise = undefined;
+
+var initSqlJs = function (moduleConfig) {
+
+    if (initSqlJsPromise){
+      return initSqlJsPromise;
+    }
+    // If we're here, we've never called this function before
+    initSqlJsPromise = new Promise(function (resolveModule, reject) {
+
+        // We are modularizing this manually because the current modularize setting in Emscripten has some issues:
+        // https://github.com/kripken/emscripten/issues/5820
+
+        // The way to affect the loading of emcc compiled modules is to create a variable called `Module` and add
+        // properties to it, like `preRun`, `postRun`, etc
+        // We are using that to get notified when the WASM has finished loading.
+        // Only then will we return our promise
+
+        // If they passed in a moduleConfig object, use that
+        // Otherwise, initialize Module to the empty object
+        var Module = typeof moduleConfig !== 'undefined' ? moduleConfig : {};
+
+        // EMCC only allows for a single onAbort function (not an array of functions)
+        // So if the user defined their own onAbort function, we remember it and call it
+        var originalOnAbortFunction = Module['onAbort'];
+        Module['onAbort'] = function (errorThatCausedAbort) {
+            reject(new Error(errorThatCausedAbort));
+            if (originalOnAbortFunction){
+              originalOnAbortFunction(errorThatCausedAbort);
+            }
+        };
+
+        Module['postRun'] = Module['postRun'] || [];
+        Module['postRun'].push(function () {
+            // When Emscripted calls postRun, this promise resolves with the built Module
+            resolveModule(Module);
+        });
+
+        // There is a section of code in the emcc-generated code below that looks like this:
+        // (Note that this is lowercase `module`)
+        // if (typeof module !== 'undefined') {
+        //     module['exports'] = Module;
+        // }
+        // When that runs, it's going to overwrite our own modularization export efforts in shell-post.js!
+        // The only way to tell emcc not to emit it is to pass the MODULARIZE=1 or MODULARIZE_INSTANCE=1 flags,
+        // but that carries with it additional unnecessary baggage/bugs we don't want either.
+        // So, we have three options:
+        // 1) We undefine `module`
+        // 2) We remember what `module['exports']` was at the beginning of this function and we restore it later
+        // 3) We write a script to remove those lines of code as part of the Make process.
+        //
+        // Since those are the only lines of code that care about module, we will undefine it. It's the most straightforward
+        // of the options, and has the side effect of reducing emcc's efforts to modify the module if its output were to change in the future.
+        // That's a nice side effect since we're handling the modularization efforts ourselves
+        module = undefined;
+
+        // The emcc-generated code and shell-post.js code goes below,
+        // meaning that all of it runs inside of this promise. If anything throws an exception, our promise will abort
+
+var e;e||(e=typeof Module !== 'undefined' ? Module : {});null;
+e.onRuntimeInitialized=function(){function a(h,l){this.Ra=h;this.db=l;this.Qa=1;this.lb=[]}function b(h,l){this.db=l;l=ba(h)+1;this.eb=ca(l);if(null===this.eb)throw Error("Unable to allocate memory for the SQL string");k(h,n,this.eb,l);this.jb=this.eb;this.$a=this.pb=null}function c(h){this.filename="dbfile_"+(4294967295*Math.random()>>>0);if(null!=h){var l=this.filename,p=l?r("//"+l):"/";l=da(!0,!0);p=ea(p,(void 0!==l?l:438)&4095|32768,0);if(h){if("string"===typeof h){for(var q=Array(h.length),B=
+0,ha=h.length;B<ha;++B)q[B]=h.charCodeAt(B);h=q}fa(p,l|146);q=v(p,577);ka(q,h,0,h.length,0,void 0);la(q);fa(p,l)}}this.handleError(g(this.filename,d));this.db=x(d,"i32");ic(this.db);this.fb={};this.Xa={}}var d=y(4),f=e.cwrap,g=f("sqlite3_open","number",["string","number"]),m=f("sqlite3_close_v2","number",["number"]),t=f("sqlite3_exec","number",["number","string","number","number","number"]),w=f("sqlite3_changes","number",["number"]),u=f("sqlite3_prepare_v2","number",["number","string","number","number",
+"number"]),C=f("sqlite3_sql","string",["number"]),H=f("sqlite3_normalized_sql","string",["number"]),aa=f("sqlite3_prepare_v2","number",["number","number","number","number","number"]),jc=f("sqlite3_bind_text","number",["number","number","number","number","number"]),rb=f("sqlite3_bind_blob","number",["number","number","number","number","number"]),kc=f("sqlite3_bind_double","number",["number","number","number"]),lc=f("sqlite3_bind_int","number",["number","number","number"]),mc=f("sqlite3_bind_parameter_index",
+"number",["number","string"]),nc=f("sqlite3_step","number",["number"]),oc=f("sqlite3_errmsg","string",["number"]),pc=f("sqlite3_column_count","number",["number"]),qc=f("sqlite3_data_count","number",["number"]),rc=f("sqlite3_column_double","number",["number","number"]),sc=f("sqlite3_column_text","string",["number","number"]),tc=f("sqlite3_column_blob","number",["number","number"]),uc=f("sqlite3_column_bytes","number",["number","number"]),vc=f("sqlite3_column_type","number",["number","number"]),wc=
+f("sqlite3_column_name","string",["number","number"]),xc=f("sqlite3_reset","number",["number"]),yc=f("sqlite3_clear_bindings","number",["number"]),zc=f("sqlite3_finalize","number",["number"]),Ac=f("sqlite3_create_function_v2","number","number string number number number number number number number".split(" ")),Bc=f("sqlite3_value_type","number",["number"]),Cc=f("sqlite3_value_bytes","number",["number"]),Dc=f("sqlite3_value_text","string",["number"]),Ec=f("sqlite3_value_blob","number",["number"]),
+Fc=f("sqlite3_value_double","number",["number"]),Gc=f("sqlite3_result_double","",["number","number"]),sb=f("sqlite3_result_null","",["number"]),Hc=f("sqlite3_result_text","",["number","string","number","number"]),Ic=f("sqlite3_result_blob","",["number","number","number","number"]),Jc=f("sqlite3_result_int","",["number","number"]),tb=f("sqlite3_result_error","",["number","string","number"]),ic=f("RegisterExtensionFunctions","number",["number"]);a.prototype.bind=function(h){if(!this.Ra)throw"Statement closed";
+this.reset();return Array.isArray(h)?this.Bb(h):null!=h&&"object"===typeof h?this.Cb(h):!0};a.prototype.step=function(){if(!this.Ra)throw"Statement closed";this.Qa=1;var h=nc(this.Ra);switch(h){case 100:return!0;case 101:return!1;default:throw this.db.handleError(h);}};a.prototype.Hb=function(h){null==h&&(h=this.Qa,this.Qa+=1);return rc(this.Ra,h)};a.prototype.Ib=function(h){null==h&&(h=this.Qa,this.Qa+=1);return sc(this.Ra,h)};a.prototype.getBlob=function(h){null==h&&(h=this.Qa,this.Qa+=1);var l=
+uc(this.Ra,h);h=tc(this.Ra,h);for(var p=new Uint8Array(l),q=0;q<l;q+=1)p[q]=z[h+q];return p};a.prototype.get=function(h){null!=h&&this.bind(h)&&this.step();h=[];for(var l=qc(this.Ra),p=0;p<l;p+=1)switch(vc(this.Ra,p)){case 1:case 2:h.push(this.Hb(p));break;case 3:h.push(this.Ib(p));break;case 4:h.push(this.getBlob(p));break;default:h.push(null)}return h};a.prototype.getColumnNames=function(){for(var h=[],l=pc(this.Ra),p=0;p<l;p+=1)h.push(wc(this.Ra,p));return h};a.prototype.getAsObject=function(h){h=
+this.get(h);for(var l=this.getColumnNames(),p={},q=0;q<l.length;q+=1)p[l[q]]=h[q];return p};a.prototype.getSQL=function(){return C(this.Ra)};a.prototype.getNormalizedSQL=function(){return H(this.Ra)};a.prototype.run=function(h){null!=h&&this.bind(h);this.step();return this.reset()};a.prototype.Fb=function(h,l){null==l&&(l=this.Qa,this.Qa+=1);h=ma(h);var p=na(h);this.lb.push(p);this.db.handleError(jc(this.Ra,l,p,h.length-1,0))};a.prototype.Ab=function(h,l){null==l&&(l=this.Qa,this.Qa+=1);var p=na(h);
+this.lb.push(p);this.db.handleError(rb(this.Ra,l,p,h.length,0))};a.prototype.Eb=function(h,l){null==l&&(l=this.Qa,this.Qa+=1);this.db.handleError((h===(h|0)?lc:kc)(this.Ra,l,h))};a.prototype.Db=function(h){null==h&&(h=this.Qa,this.Qa+=1);rb(this.Ra,h,0,0,0)};a.prototype.tb=function(h,l){null==l&&(l=this.Qa,this.Qa+=1);switch(typeof h){case "string":this.Fb(h,l);return;case "number":case "boolean":this.Eb(h+0,l);return;case "object":if(null===h){this.Db(l);return}if(null!=h.length){this.Ab(h,l);return}}throw"Wrong API use : tried to bind a value of an unknown type ("+
+h+").";};a.prototype.Cb=function(h){var l=this;Object.keys(h).forEach(function(p){var q=mc(l.Ra,p);0!==q&&l.tb(h[p],q)});return!0};a.prototype.Bb=function(h){for(var l=0;l<h.length;l+=1)this.tb(h[l],l+1);return!0};a.prototype.reset=function(){return 0===yc(this.Ra)&&0===xc(this.Ra)};a.prototype.freemem=function(){for(var h;void 0!==(h=this.lb.pop());)oa(h)};a.prototype.free=function(){var h=0===zc(this.Ra);delete this.db.fb[this.Ra];this.Ra=0;return h};b.prototype.next=function(){if(null===this.eb)return{done:!0};
+null!==this.$a&&(this.$a.free(),this.$a=null);if(!this.db.db)throw this.nb(),Error("Database closed");var h=pa(),l=y(4);qa(d);qa(l);try{this.db.handleError(aa(this.db.db,this.jb,-1,d,l));this.jb=x(l,"i32");var p=x(d,"i32");if(0===p)return this.nb(),{done:!0};this.$a=new a(p,this.db);this.db.fb[p]=this.$a;return{value:this.$a,done:!1}}catch(q){throw this.pb=A(this.jb),this.nb(),q;}finally{ra(h)}};b.prototype.nb=function(){oa(this.eb);this.eb=null};b.prototype.getRemainingSQL=function(){return null!==
+this.pb?this.pb:A(this.jb)};"function"===typeof Symbol&&"symbol"===typeof Symbol.iterator&&(b.prototype[Symbol.iterator]=function(){return this});c.prototype.run=function(h,l){if(!this.db)throw"Database closed";if(l){h=this.prepare(h,l);try{h.step()}finally{h.free()}}else this.handleError(t(this.db,h,0,0,d));return this};c.prototype.exec=function(h,l){if(!this.db)throw"Database closed";var p=pa(),q=null;try{var B=ba(h)+1,ha=y(B);k(h,z,ha,B);var D=ha;var ia=y(4);for(h=[];0!==x(D,"i8");){qa(d);qa(ia);
+this.handleError(aa(this.db,D,-1,d,ia));var ja=x(d,"i32");D=x(ia,"i32");if(0!==ja){B=null;q=new a(ja,this);for(null!=l&&q.bind(l);q.step();)null===B&&(B={columns:q.getColumnNames(),values:[]},h.push(B)),B.values.push(q.get());q.free()}}return h}catch(E){throw q&&q.free(),E;}finally{ra(p)}};c.prototype.each=function(h,l,p,q){"function"===typeof l&&(q=p,p=l,l=void 0);h=this.prepare(h,l);try{for(;h.step();)p(h.getAsObject())}finally{h.free()}if("function"===typeof q)return q()};c.prototype.prepare=function(h,
+l){qa(d);this.handleError(u(this.db,h,-1,d,0));h=x(d,"i32");if(0===h)throw"Nothing to prepare";var p=new a(h,this);null!=l&&p.bind(l);return this.fb[h]=p};c.prototype.iterateStatements=function(h){return new b(h,this)};c.prototype["export"]=function(){Object.values(this.fb).forEach(function(l){l.free()});Object.values(this.Xa).forEach(sa);this.Xa={};this.handleError(m(this.db));var h=ta(this.filename);this.handleError(g(this.filename,d));this.db=x(d,"i32");return h};c.prototype.close=function(){null!==
+this.db&&(Object.values(this.fb).forEach(function(h){h.free()}),Object.values(this.Xa).forEach(sa),this.Xa={},this.handleError(m(this.db)),ua("/"+this.filename),this.db=null)};c.prototype.handleError=function(h){if(0===h)return null;h=oc(this.db);throw Error(h);};c.prototype.getRowsModified=function(){return w(this.db)};c.prototype.create_function=function(h,l){Object.prototype.hasOwnProperty.call(this.Xa,h)&&(sa(this.Xa[h]),delete this.Xa[h]);var p=va(function(q,B,ha){for(var D,ia=[],ja=0;ja<B;ja+=
+1){var E=x(ha+4*ja,"i32"),T=Bc(E);if(1===T||2===T)E=Fc(E);else if(3===T)E=Dc(E);else if(4===T){T=E;E=Cc(T);T=Ec(T);for(var wb=new Uint8Array(E),Ba=0;Ba<E;Ba+=1)wb[Ba]=z[T+Ba];E=wb}else E=null;ia.push(E)}try{D=l.apply(null,ia)}catch(Mc){tb(q,Mc,-1);return}switch(typeof D){case "boolean":Jc(q,D?1:0);break;case "number":Gc(q,D);break;case "string":Hc(q,D,-1,-1);break;case "object":null===D?sb(q):null!=D.length?(B=na(D),Ic(q,B,D.length,-1),oa(B)):tb(q,"Wrong API use : tried to return a value of an unknown type ("+
+D+").",-1);break;default:sb(q)}});this.Xa[h]=p;this.handleError(Ac(this.db,h,l.length,1,0,p,0,0,0));return this};e.Database=c};var wa={},F;for(F in e)e.hasOwnProperty(F)&&(wa[F]=e[F]);var xa="./this.program",ya=!1,za=!1,Aa=!1,Ca=!1;ya="object"===typeof window;za="function"===typeof importScripts;Aa="object"===typeof process&&"object"===typeof process.versions&&"string"===typeof process.versions.node;Ca=!ya&&!Aa&&!za;var G="",Da,Ea,Fa,Ga,Ha;
+if(Aa)G=za?require("path").dirname(G)+"/":__dirname+"/",Da=function(a,b){Ga||(Ga=require("fs"));Ha||(Ha=require("path"));a=Ha.normalize(a);return Ga.readFileSync(a,b?null:"utf8")},Fa=function(a){a=Da(a,!0);a.buffer||(a=new Uint8Array(a));assert(a.buffer);return a},1<process.argv.length&&(xa=process.argv[1].replace(/\\/g,"/")),process.argv.slice(2),"undefined"!==typeof module&&(module.exports=e),process.on("uncaughtException",function(a){throw a;}),process.on("unhandledRejection",I),e.inspect=function(){return"[Emscripten Module object]"};
+else if(Ca)"undefined"!=typeof read&&(Da=function(a){return read(a)}),Fa=function(a){if("function"===typeof readbuffer)return new Uint8Array(readbuffer(a));a=read(a,"binary");assert("object"===typeof a);return a},"undefined"!==typeof print&&("undefined"===typeof console&&(console={}),console.log=print,console.warn=console.error="undefined"!==typeof printErr?printErr:print);else if(ya||za)za?G=self.location.href:"undefined"!==typeof document&&document.currentScript&&(G=document.currentScript.src),
+G=0!==G.indexOf("blob:")?G.substr(0,G.lastIndexOf("/")+1):"",Da=function(a){var b=new XMLHttpRequest;b.open("GET",a,!1);b.send(null);return b.responseText},za&&(Fa=function(a){var b=new XMLHttpRequest;b.open("GET",a,!1);b.responseType="arraybuffer";b.send(null);return new Uint8Array(b.response)}),Ea=function(a,b,c){var d=new XMLHttpRequest;d.open("GET",a,!0);d.responseType="arraybuffer";d.onload=function(){200==d.status||0==d.status&&d.response?b(d.response):c()};d.onerror=c;d.send(null)};
+var Ia=e.print||console.log.bind(console),J=e.printErr||console.warn.bind(console);for(F in wa)wa.hasOwnProperty(F)&&(e[F]=wa[F]);wa=null;e.thisProgram&&(xa=e.thisProgram);var Ja=[],Ka;function sa(a){Ka.delete(K.get(a));Ja.push(a)}
+function va(a){if(!Ka){Ka=new WeakMap;for(var b=0;b<K.length;b++){var c=K.get(b);c&&Ka.set(c,b)}}if(Ka.has(a))a=Ka.get(a);else{if(Ja.length)b=Ja.pop();else{try{K.grow(1)}catch(g){if(!(g instanceof RangeError))throw g;throw"Unable to grow wasm table. Set ALLOW_TABLE_GROWTH.";}b=K.length-1}try{K.set(b,a)}catch(g){if(!(g instanceof TypeError))throw g;if("function"===typeof WebAssembly.Function){var d={i:"i32",j:"i64",f:"f32",d:"f64"},f={parameters:[],results:[]};for(c=1;4>c;++c)f.parameters.push(d["viii"[c]]);
+c=new WebAssembly.Function(f,a)}else{d=[1,0,1,96];f={i:127,j:126,f:125,d:124};d.push(3);for(c=0;3>c;++c)d.push(f["iii"[c]]);d.push(0);d[1]=d.length-2;c=new Uint8Array([0,97,115,109,1,0,0,0].concat(d,[2,7,1,1,101,1,102,0,0,7,5,1,1,102,0,0]));c=new WebAssembly.Module(c);c=(new WebAssembly.Instance(c,{e:{f:a}})).exports.f}K.set(b,c)}Ka.set(a,b);a=b}return a}var La;e.wasmBinary&&(La=e.wasmBinary);var noExitRuntime=e.noExitRuntime||!0;"object"!==typeof WebAssembly&&I("no native wasm support detected");
+function qa(a){var b="i32";"*"===b.charAt(b.length-1)&&(b="i32");switch(b){case "i1":z[a>>0]=0;break;case "i8":z[a>>0]=0;break;case "i16":Ma[a>>1]=0;break;case "i32":L[a>>2]=0;break;case "i64":M=[0,(N=0,1<=+Math.abs(N)?0<N?(Math.min(+Math.floor(N/4294967296),4294967295)|0)>>>0:~~+Math.ceil((N-+(~~N>>>0))/4294967296)>>>0:0)];L[a>>2]=M[0];L[a+4>>2]=M[1];break;case "float":Na[a>>2]=0;break;case "double":Oa[a>>3]=0;break;default:I("invalid type for setValue: "+b)}}
+function x(a,b){b=b||"i8";"*"===b.charAt(b.length-1)&&(b="i32");switch(b){case "i1":return z[a>>0];case "i8":return z[a>>0];case "i16":return Ma[a>>1];case "i32":return L[a>>2];case "i64":return L[a>>2];case "float":return Na[a>>2];case "double":return Oa[a>>3];default:I("invalid type for getValue: "+b)}return null}var Pa,Qa=!1;function assert(a,b){a||I("Assertion failed: "+b)}function Ra(a){var b=e["_"+a];assert(b,"Cannot call unknown function "+a+", make sure it is exported");return b}
+function Sa(a,b,c,d){var f={string:function(u){var C=0;if(null!==u&&void 0!==u&&0!==u){var H=(u.length<<2)+1;C=y(H);k(u,n,C,H)}return C},array:function(u){var C=y(u.length);z.set(u,C);return C}},g=Ra(a),m=[];a=0;if(d)for(var t=0;t<d.length;t++){var w=f[c[t]];w?(0===a&&(a=pa()),m[t]=w(d[t])):m[t]=d[t]}c=g.apply(null,m);c=function(u){return"string"===b?A(u):"boolean"===b?!!u:u}(c);0!==a&&ra(a);return c}var Ta=0,Ua=1;
+function na(a){var b=Ta==Ua?y(a.length):ca(a.length);a.subarray||a.slice?n.set(a,b):n.set(new Uint8Array(a),b);return b}var Va="undefined"!==typeof TextDecoder?new TextDecoder("utf8"):void 0;
+function Wa(a,b,c){var d=b+c;for(c=b;a[c]&&!(c>=d);)++c;if(16<c-b&&a.subarray&&Va)return Va.decode(a.subarray(b,c));for(d="";b<c;){var f=a[b++];if(f&128){var g=a[b++]&63;if(192==(f&224))d+=String.fromCharCode((f&31)<<6|g);else{var m=a[b++]&63;f=224==(f&240)?(f&15)<<12|g<<6|m:(f&7)<<18|g<<12|m<<6|a[b++]&63;65536>f?d+=String.fromCharCode(f):(f-=65536,d+=String.fromCharCode(55296|f>>10,56320|f&1023))}}else d+=String.fromCharCode(f)}return d}function A(a,b){return a?Wa(n,a,b):""}
+function k(a,b,c,d){if(!(0<d))return 0;var f=c;d=c+d-1;for(var g=0;g<a.length;++g){var m=a.charCodeAt(g);if(55296<=m&&57343>=m){var t=a.charCodeAt(++g);m=65536+((m&1023)<<10)|t&1023}if(127>=m){if(c>=d)break;b[c++]=m}else{if(2047>=m){if(c+1>=d)break;b[c++]=192|m>>6}else{if(65535>=m){if(c+2>=d)break;b[c++]=224|m>>12}else{if(c+3>=d)break;b[c++]=240|m>>18;b[c++]=128|m>>12&63}b[c++]=128|m>>6&63}b[c++]=128|m&63}}b[c]=0;return c-f}
+function ba(a){for(var b=0,c=0;c<a.length;++c){var d=a.charCodeAt(c);55296<=d&&57343>=d&&(d=65536+((d&1023)<<10)|a.charCodeAt(++c)&1023);127>=d?++b:b=2047>=d?b+2:65535>=d?b+3:b+4}return b}function Xa(a){var b=ba(a)+1,c=ca(b);c&&k(a,z,c,b);return c}var Ya,z,n,Ma,L,Na,Oa;
+function Za(){var a=Pa.buffer;Ya=a;e.HEAP8=z=new Int8Array(a);e.HEAP16=Ma=new Int16Array(a);e.HEAP32=L=new Int32Array(a);e.HEAPU8=n=new Uint8Array(a);e.HEAPU16=new Uint16Array(a);e.HEAPU32=new Uint32Array(a);e.HEAPF32=Na=new Float32Array(a);e.HEAPF64=Oa=new Float64Array(a)}var K,$a=[],ab=[],bb=[];function cb(){var a=e.preRun.shift();$a.unshift(a)}var db=0,eb=null,fb=null;e.preloadedImages={};e.preloadedAudios={};
+function I(a){if(e.onAbort)e.onAbort(a);J(a);Qa=!0;throw new WebAssembly.RuntimeError("abort("+a+"). Build with -s ASSERTIONS=1 for more info.");}function gb(){return O.startsWith("data:application/octet-stream;base64,")}var O;O="sql-wasm.wasm";if(!gb()){var hb=O;O=e.locateFile?e.locateFile(hb,G):G+hb}function ib(){var a=O;try{if(a==O&&La)return new Uint8Array(La);if(Fa)return Fa(a);throw"both async and sync fetching of the wasm failed";}catch(b){I(b)}}
+function jb(){if(!La&&(ya||za)){if("function"===typeof fetch&&!O.startsWith("file://"))return fetch(O,{credentials:"same-origin"}).then(function(a){if(!a.ok)throw"failed to load wasm binary file at '"+O+"'";return a.arrayBuffer()}).catch(function(){return ib()});if(Ea)return new Promise(function(a,b){Ea(O,function(c){a(new Uint8Array(c))},b)})}return Promise.resolve().then(function(){return ib()})}var N,M;
+function kb(a){for(;0<a.length;){var b=a.shift();if("function"==typeof b)b(e);else{var c=b.Rb;"number"===typeof c?void 0===b.mb?K.get(c)():K.get(c)(b.mb):c(void 0===b.mb?null:b.mb)}}}function lb(a){return a.replace(/\b_Z[\w\d_]+/g,function(b){return b===b?b:b+" ["+b+"]"})}
+function mb(){function a(m){return(m=m.toTimeString().match(/\(([A-Za-z ]+)\)$/))?m[1]:"GMT"}if(!nb){nb=!0;var b=(new Date).getFullYear(),c=new Date(b,0,1),d=new Date(b,6,1);b=c.getTimezoneOffset();var f=d.getTimezoneOffset(),g=Math.max(b,f);L[ob()>>2]=60*g;L[pb()>>2]=Number(b!=f);c=a(c);d=a(d);c=Xa(c);d=Xa(d);f<b?(L[qb()>>2]=c,L[qb()+4>>2]=d):(L[qb()>>2]=d,L[qb()+4>>2]=c)}}var nb;
+function ub(a,b){for(var c=0,d=a.length-1;0<=d;d--){var f=a[d];"."===f?a.splice(d,1):".."===f?(a.splice(d,1),c++):c&&(a.splice(d,1),c--)}if(b)for(;c;c--)a.unshift("..");return a}function r(a){var b="/"===a.charAt(0),c="/"===a.substr(-1);(a=ub(a.split("/").filter(function(d){return!!d}),!b).join("/"))||b||(a=".");a&&c&&(a+="/");return(b?"/":"")+a}
+function vb(a){var b=/^(\/?|)([\s\S]*?)((?:\.{1,2}|[^\/]+?|)(\.[^.\/]*|))(?:[\/]*)$/.exec(a).slice(1);a=b[0];b=b[1];if(!a&&!b)return".";b&&(b=b.substr(0,b.length-1));return a+b}function xb(a){if("/"===a)return"/";a=r(a);a=a.replace(/\/$/,"");var b=a.lastIndexOf("/");return-1===b?a:a.substr(b+1)}
+function yb(){if("object"===typeof crypto&&"function"===typeof crypto.getRandomValues){var a=new Uint8Array(1);return function(){crypto.getRandomValues(a);return a[0]}}if(Aa)try{var b=require("crypto");return function(){return b.randomBytes(1)[0]}}catch(c){}return function(){I("randomDevice")}}
+function zb(){for(var a="",b=!1,c=arguments.length-1;-1<=c&&!b;c--){b=0<=c?arguments[c]:"/";if("string"!==typeof b)throw new TypeError("Arguments to path.resolve must be strings");if(!b)return"";a=b+"/"+a;b="/"===b.charAt(0)}a=ub(a.split("/").filter(function(d){return!!d}),!b).join("/");return(b?"/":"")+a||"."}var Ab=[];function Bb(a,b){Ab[a]={input:[],output:[],cb:b};Cb(a,Db)}
+var Db={open:function(a){var b=Ab[a.node.rdev];if(!b)throw new P(43);a.tty=b;a.seekable=!1},close:function(a){a.tty.cb.flush(a.tty)},flush:function(a){a.tty.cb.flush(a.tty)},read:function(a,b,c,d){if(!a.tty||!a.tty.cb.xb)throw new P(60);for(var f=0,g=0;g<d;g++){try{var m=a.tty.cb.xb(a.tty)}catch(t){throw new P(29);}if(void 0===m&&0===f)throw new P(6);if(null===m||void 0===m)break;f++;b[c+g]=m}f&&(a.node.timestamp=Date.now());return f},write:function(a,b,c,d){if(!a.tty||!a.tty.cb.qb)throw new P(60);
+try{for(var f=0;f<d;f++)a.tty.cb.qb(a.tty,b[c+f])}catch(g){throw new P(29);}d&&(a.node.timestamp=Date.now());return f}},Eb={xb:function(a){if(!a.input.length){var b=null;if(Aa){var c=Buffer.zb?Buffer.zb(256):new Buffer(256),d=0;try{d=Ga.readSync(process.stdin.fd,c,0,256,null)}catch(f){if(f.toString().includes("EOF"))d=0;else throw f;}0<d?b=c.slice(0,d).toString("utf-8"):b=null}else"undefined"!=typeof window&&"function"==typeof window.prompt?(b=window.prompt("Input: "),null!==b&&(b+="\n")):"function"==
+typeof readline&&(b=readline(),null!==b&&(b+="\n"));if(!b)return null;a.input=ma(b,!0)}return a.input.shift()},qb:function(a,b){null===b||10===b?(Ia(Wa(a.output,0)),a.output=[]):0!=b&&a.output.push(b)},flush:function(a){a.output&&0<a.output.length&&(Ia(Wa(a.output,0)),a.output=[])}},Fb={qb:function(a,b){null===b||10===b?(J(Wa(a.output,0)),a.output=[]):0!=b&&a.output.push(b)},flush:function(a){a.output&&0<a.output.length&&(J(Wa(a.output,0)),a.output=[])}},Q={Va:null,Wa:function(){return Q.createNode(null,
+"/",16895,0)},createNode:function(a,b,c,d){if(24576===(c&61440)||4096===(c&61440))throw new P(63);Q.Va||(Q.Va={dir:{node:{Ua:Q.Ma.Ua,Ta:Q.Ma.Ta,lookup:Q.Ma.lookup,gb:Q.Ma.gb,rename:Q.Ma.rename,unlink:Q.Ma.unlink,rmdir:Q.Ma.rmdir,readdir:Q.Ma.readdir,symlink:Q.Ma.symlink},stream:{Za:Q.Na.Za}},file:{node:{Ua:Q.Ma.Ua,Ta:Q.Ma.Ta},stream:{Za:Q.Na.Za,read:Q.Na.read,write:Q.Na.write,sb:Q.Na.sb,hb:Q.Na.hb,ib:Q.Na.ib}},link:{node:{Ua:Q.Ma.Ua,Ta:Q.Ma.Ta,readlink:Q.Ma.readlink},stream:{}},ub:{node:{Ua:Q.Ma.Ua,
+Ta:Q.Ma.Ta},stream:Gb}});c=Hb(a,b,c,d);R(c.mode)?(c.Ma=Q.Va.dir.node,c.Na=Q.Va.dir.stream,c.Oa={}):32768===(c.mode&61440)?(c.Ma=Q.Va.file.node,c.Na=Q.Va.file.stream,c.Sa=0,c.Oa=null):40960===(c.mode&61440)?(c.Ma=Q.Va.link.node,c.Na=Q.Va.link.stream):8192===(c.mode&61440)&&(c.Ma=Q.Va.ub.node,c.Na=Q.Va.ub.stream);c.timestamp=Date.now();a&&(a.Oa[b]=c,a.timestamp=c.timestamp);return c},Sb:function(a){return a.Oa?a.Oa.subarray?a.Oa.subarray(0,a.Sa):new Uint8Array(a.Oa):new Uint8Array(0)},vb:function(a,
+b){var c=a.Oa?a.Oa.length:0;c>=b||(b=Math.max(b,c*(1048576>c?2:1.125)>>>0),0!=c&&(b=Math.max(b,256)),c=a.Oa,a.Oa=new Uint8Array(b),0<a.Sa&&a.Oa.set(c.subarray(0,a.Sa),0))},Ob:function(a,b){if(a.Sa!=b)if(0==b)a.Oa=null,a.Sa=0;else{var c=a.Oa;a.Oa=new Uint8Array(b);c&&a.Oa.set(c.subarray(0,Math.min(b,a.Sa)));a.Sa=b}},Ma:{Ua:function(a){var b={};b.dev=8192===(a.mode&61440)?a.id:1;b.ino=a.id;b.mode=a.mode;b.nlink=1;b.uid=0;b.gid=0;b.rdev=a.rdev;R(a.mode)?b.size=4096:32768===(a.mode&61440)?b.size=a.Sa:
+40960===(a.mode&61440)?b.size=a.link.length:b.size=0;b.atime=new Date(a.timestamp);b.mtime=new Date(a.timestamp);b.ctime=new Date(a.timestamp);b.Gb=4096;b.blocks=Math.ceil(b.size/b.Gb);return b},Ta:function(a,b){void 0!==b.mode&&(a.mode=b.mode);void 0!==b.timestamp&&(a.timestamp=b.timestamp);void 0!==b.size&&Q.Ob(a,b.size)},lookup:function(){throw Ib[44];},gb:function(a,b,c,d){return Q.createNode(a,b,c,d)},rename:function(a,b,c){if(R(a.mode)){try{var d=Jb(b,c)}catch(g){}if(d)for(var f in d.Oa)throw new P(55);
+}delete a.parent.Oa[a.name];a.parent.timestamp=Date.now();a.name=c;b.Oa[c]=a;b.timestamp=a.parent.timestamp;a.parent=b},unlink:function(a,b){delete a.Oa[b];a.timestamp=Date.now()},rmdir:function(a,b){var c=Jb(a,b),d;for(d in c.Oa)throw new P(55);delete a.Oa[b];a.timestamp=Date.now()},readdir:function(a){var b=[".",".."],c;for(c in a.Oa)a.Oa.hasOwnProperty(c)&&b.push(c);return b},symlink:function(a,b,c){a=Q.createNode(a,b,41471,0);a.link=c;return a},readlink:function(a){if(40960!==(a.mode&61440))throw new P(28);
+return a.link}},Na:{read:function(a,b,c,d,f){var g=a.node.Oa;if(f>=a.node.Sa)return 0;a=Math.min(a.node.Sa-f,d);if(8<a&&g.subarray)b.set(g.subarray(f,f+a),c);else for(d=0;d<a;d++)b[c+d]=g[f+d];return a},write:function(a,b,c,d,f,g){b.buffer===z.buffer&&(g=!1);if(!d)return 0;a=a.node;a.timestamp=Date.now();if(b.subarray&&(!a.Oa||a.Oa.subarray)){if(g)return a.Oa=b.subarray(c,c+d),a.Sa=d;if(0===a.Sa&&0===f)return a.Oa=b.slice(c,c+d),a.Sa=d;if(f+d<=a.Sa)return a.Oa.set(b.subarray(c,c+d),f),d}Q.vb(a,f+
+d);if(a.Oa.subarray&&b.subarray)a.Oa.set(b.subarray(c,c+d),f);else for(g=0;g<d;g++)a.Oa[f+g]=b[c+g];a.Sa=Math.max(a.Sa,f+d);return d},Za:function(a,b,c){1===c?b+=a.position:2===c&&32768===(a.node.mode&61440)&&(b+=a.node.Sa);if(0>b)throw new P(28);return b},sb:function(a,b,c){Q.vb(a.node,b+c);a.node.Sa=Math.max(a.node.Sa,b+c)},hb:function(a,b,c,d,f,g){if(0!==b)throw new P(28);if(32768!==(a.node.mode&61440))throw new P(43);a=a.node.Oa;if(g&2||a.buffer!==Ya){if(0<d||d+c<a.length)a.subarray?a=a.subarray(d,
+d+c):a=Array.prototype.slice.call(a,d,d+c);d=!0;g=65536*Math.ceil(c/65536);for(b=ca(g);c<g;)z[b+c++]=0;c=b;if(!c)throw new P(48);z.set(a,c)}else d=!1,c=a.byteOffset;return{Nb:c,kb:d}},ib:function(a,b,c,d,f){if(32768!==(a.node.mode&61440))throw new P(43);if(f&2)return 0;Q.Na.write(a,b,0,d,c,!1);return 0}}},Kb=null,Lb={},S=[],Mb=1,U=null,Nb=!0,V={},P=null,Ib={};
+function W(a,b){a=zb("/",a);b=b||{};if(!a)return{path:"",node:null};var c={wb:!0,rb:0},d;for(d in c)void 0===b[d]&&(b[d]=c[d]);if(8<b.rb)throw new P(32);a=ub(a.split("/").filter(function(m){return!!m}),!1);var f=Kb;c="/";for(d=0;d<a.length;d++){var g=d===a.length-1;if(g&&b.parent)break;f=Jb(f,a[d]);c=r(c+"/"+a[d]);f.ab&&(!g||g&&b.wb)&&(f=f.ab.root);if(!g||b.Ya)for(g=0;40960===(f.mode&61440);)if(f=Ob(c),c=zb(vb(c),f),f=W(c,{rb:b.rb}).node,40<g++)throw new P(32);}return{path:c,node:f}}
+function Pb(a){for(var b;;){if(a===a.parent)return a=a.Wa.yb,b?"/"!==a[a.length-1]?a+"/"+b:a+b:a;b=b?a.name+"/"+b:a.name;a=a.parent}}function Qb(a,b){for(var c=0,d=0;d<b.length;d++)c=(c<<5)-c+b.charCodeAt(d)|0;return(a+c>>>0)%U.length}function Rb(a){var b=Qb(a.parent.id,a.name);if(U[b]===a)U[b]=a.bb;else for(b=U[b];b;){if(b.bb===a){b.bb=a.bb;break}b=b.bb}}
+function Jb(a,b){var c;if(c=(c=Sb(a,"x"))?c:a.Ma.lookup?0:2)throw new P(c,a);for(c=U[Qb(a.id,b)];c;c=c.bb){var d=c.name;if(c.parent.id===a.id&&d===b)return c}return a.Ma.lookup(a,b)}function Hb(a,b,c,d){a=new Tb(a,b,c,d);b=Qb(a.parent.id,a.name);a.bb=U[b];return U[b]=a}function R(a){return 16384===(a&61440)}var Ub={r:0,"r+":2,w:577,"w+":578,a:1089,"a+":1090};function Vb(a){var b=["r","w","rw"][a&3];a&512&&(b+="w");return b}
+function Sb(a,b){if(Nb)return 0;if(!b.includes("r")||a.mode&292){if(b.includes("w")&&!(a.mode&146)||b.includes("x")&&!(a.mode&73))return 2}else return 2;return 0}function Wb(a,b){try{return Jb(a,b),20}catch(c){}return Sb(a,"wx")}function Xb(a,b,c){try{var d=Jb(a,b)}catch(f){return f.Pa}if(a=Sb(a,"wx"))return a;if(c){if(!R(d.mode))return 54;if(d===d.parent||"/"===Pb(d))return 10}else if(R(d.mode))return 31;return 0}function Yb(a){var b=4096;for(a=a||0;a<=b;a++)if(!S[a])return a;throw new P(33);}
+function Zb(a,b){$b||($b=function(){},$b.prototype={});var c=new $b,d;for(d in a)c[d]=a[d];a=c;b=Yb(b);a.fd=b;return S[b]=a}var Gb={open:function(a){a.Na=Lb[a.node.rdev].Na;a.Na.open&&a.Na.open(a)},Za:function(){throw new P(70);}};function Cb(a,b){Lb[a]={Na:b}}
+function ac(a,b){var c="/"===b,d=!b;if(c&&Kb)throw new P(10);if(!c&&!d){var f=W(b,{wb:!1});b=f.path;f=f.node;if(f.ab)throw new P(10);if(!R(f.mode))throw new P(54);}b={type:a,Tb:{},yb:b,Lb:[]};a=a.Wa(b);a.Wa=b;b.root=a;c?Kb=a:f&&(f.ab=b,f.Wa&&f.Wa.Lb.push(b))}function ea(a,b,c){var d=W(a,{parent:!0}).node;a=xb(a);if(!a||"."===a||".."===a)throw new P(28);var f=Wb(d,a);if(f)throw new P(f);if(!d.Ma.gb)throw new P(63);return d.Ma.gb(d,a,b,c)}
+function X(a,b){return ea(a,(void 0!==b?b:511)&1023|16384,0)}function bc(a,b,c){"undefined"===typeof c&&(c=b,b=438);ea(a,b|8192,c)}function cc(a,b){if(!zb(a))throw new P(44);var c=W(b,{parent:!0}).node;if(!c)throw new P(44);b=xb(b);var d=Wb(c,b);if(d)throw new P(d);if(!c.Ma.symlink)throw new P(63);c.Ma.symlink(c,b,a)}
+function ua(a){var b=W(a,{parent:!0}).node,c=xb(a),d=Jb(b,c),f=Xb(b,c,!1);if(f)throw new P(f);if(!b.Ma.unlink)throw new P(63);if(d.ab)throw new P(10);try{V.willDeletePath&&V.willDeletePath(a)}catch(g){J("FS.trackingDelegate['willDeletePath']('"+a+"') threw an exception: "+g.message)}b.Ma.unlink(b,c);Rb(d);try{if(V.onDeletePath)V.onDeletePath(a)}catch(g){J("FS.trackingDelegate['onDeletePath']('"+a+"') threw an exception: "+g.message)}}
+function Ob(a){a=W(a).node;if(!a)throw new P(44);if(!a.Ma.readlink)throw new P(28);return zb(Pb(a.parent),a.Ma.readlink(a))}function dc(a,b){a=W(a,{Ya:!b}).node;if(!a)throw new P(44);if(!a.Ma.Ua)throw new P(63);return a.Ma.Ua(a)}function ec(a){return dc(a,!0)}function fa(a,b){a="string"===typeof a?W(a,{Ya:!0}).node:a;if(!a.Ma.Ta)throw new P(63);a.Ma.Ta(a,{mode:b&4095|a.mode&-4096,timestamp:Date.now()})}
+function fc(a){a="string"===typeof a?W(a,{Ya:!0}).node:a;if(!a.Ma.Ta)throw new P(63);a.Ma.Ta(a,{timestamp:Date.now()})}function hc(a,b){if(0>b)throw new P(28);a="string"===typeof a?W(a,{Ya:!0}).node:a;if(!a.Ma.Ta)throw new P(63);if(R(a.mode))throw new P(31);if(32768!==(a.mode&61440))throw new P(28);var c=Sb(a,"w");if(c)throw new P(c);a.Ma.Ta(a,{size:b,timestamp:Date.now()})}
+function v(a,b,c,d){if(""===a)throw new P(44);if("string"===typeof b){var f=Ub[b];if("undefined"===typeof f)throw Error("Unknown file open mode: "+b);b=f}c=b&64?("undefined"===typeof c?438:c)&4095|32768:0;if("object"===typeof a)var g=a;else{a=r(a);try{g=W(a,{Ya:!(b&131072)}).node}catch(m){}}f=!1;if(b&64)if(g){if(b&128)throw new P(20);}else g=ea(a,c,0),f=!0;if(!g)throw new P(44);8192===(g.mode&61440)&&(b&=-513);if(b&65536&&!R(g.mode))throw new P(54);if(!f&&(c=g?40960===(g.mode&61440)?32:R(g.mode)&&
+("r"!==Vb(b)||b&512)?31:Sb(g,Vb(b)):44))throw new P(c);b&512&&hc(g,0);b&=-131713;d=Zb({node:g,path:Pb(g),flags:b,seekable:!0,position:0,Na:g.Na,Qb:[],error:!1},d);d.Na.open&&d.Na.open(d);!e.logReadFiles||b&1||(Kc||(Kc={}),a in Kc||(Kc[a]=1,J("FS.trackingDelegate error on read file: "+a)));try{V.onOpenFile&&(g=0,1!==(b&2097155)&&(g|=1),0!==(b&2097155)&&(g|=2),V.onOpenFile(a,g))}catch(m){J("FS.trackingDelegate['onOpenFile']('"+a+"', flags) threw an exception: "+m.message)}return d}
+function la(a){if(null===a.fd)throw new P(8);a.ob&&(a.ob=null);try{a.Na.close&&a.Na.close(a)}catch(b){throw b;}finally{S[a.fd]=null}a.fd=null}function Lc(a,b,c){if(null===a.fd)throw new P(8);if(!a.seekable||!a.Na.Za)throw new P(70);if(0!=c&&1!=c&&2!=c)throw new P(28);a.position=a.Na.Za(a,b,c);a.Qb=[]}
+function Nc(a,b,c,d,f){if(0>d||0>f)throw new P(28);if(null===a.fd)throw new P(8);if(1===(a.flags&2097155))throw new P(8);if(R(a.node.mode))throw new P(31);if(!a.Na.read)throw new P(28);var g="undefined"!==typeof f;if(!g)f=a.position;else if(!a.seekable)throw new P(70);b=a.Na.read(a,b,c,d,f);g||(a.position+=b);return b}
+function ka(a,b,c,d,f,g){if(0>d||0>f)throw new P(28);if(null===a.fd)throw new P(8);if(0===(a.flags&2097155))throw new P(8);if(R(a.node.mode))throw new P(31);if(!a.Na.write)throw new P(28);a.seekable&&a.flags&1024&&Lc(a,0,2);var m="undefined"!==typeof f;if(!m)f=a.position;else if(!a.seekable)throw new P(70);b=a.Na.write(a,b,c,d,f,g);m||(a.position+=b);try{if(a.path&&V.onWriteToFile)V.onWriteToFile(a.path)}catch(t){J("FS.trackingDelegate['onWriteToFile']('"+a.path+"') threw an exception: "+t.message)}return b}
+function ta(a){var b={encoding:"binary"};b=b||{};b.flags=b.flags||0;b.encoding=b.encoding||"binary";if("utf8"!==b.encoding&&"binary"!==b.encoding)throw Error('Invalid encoding type "'+b.encoding+'"');var c,d=v(a,b.flags);a=dc(a).size;var f=new Uint8Array(a);Nc(d,f,0,a,0);"utf8"===b.encoding?c=Wa(f,0):"binary"===b.encoding&&(c=f);la(d);return c}
+function Oc(){P||(P=function(a,b){this.node=b;this.Pb=function(c){this.Pa=c};this.Pb(a);this.message="FS error"},P.prototype=Error(),P.prototype.constructor=P,[44].forEach(function(a){Ib[a]=new P(a);Ib[a].stack="<generic error, no stack>"}))}var Pc;function da(a,b){var c=0;a&&(c|=365);b&&(c|=146);return c}
+function Qc(a,b,c){a=r("/dev/"+a);var d=da(!!b,!!c);Rc||(Rc=64);var f=Rc++<<8|0;Cb(f,{open:function(g){g.seekable=!1},close:function(){c&&c.buffer&&c.buffer.length&&c(10)},read:function(g,m,t,w){for(var u=0,C=0;C<w;C++){try{var H=b()}catch(aa){throw new P(29);}if(void 0===H&&0===u)throw new P(6);if(null===H||void 0===H)break;u++;m[t+C]=H}u&&(g.node.timestamp=Date.now());return u},write:function(g,m,t,w){for(var u=0;u<w;u++)try{c(m[t+u])}catch(C){throw new P(29);}w&&(g.node.timestamp=Date.now());return u}});
+bc(a,d,f)}var Rc,Y={},$b,Kc,Sc={};
+function Tc(a,b,c){try{var d=a(b)}catch(f){if(f&&f.node&&r(b)!==r(Pb(f.node)))return-54;throw f;}L[c>>2]=d.dev;L[c+4>>2]=0;L[c+8>>2]=d.ino;L[c+12>>2]=d.mode;L[c+16>>2]=d.nlink;L[c+20>>2]=d.uid;L[c+24>>2]=d.gid;L[c+28>>2]=d.rdev;L[c+32>>2]=0;M=[d.size>>>0,(N=d.size,1<=+Math.abs(N)?0<N?(Math.min(+Math.floor(N/4294967296),4294967295)|0)>>>0:~~+Math.ceil((N-+(~~N>>>0))/4294967296)>>>0:0)];L[c+40>>2]=M[0];L[c+44>>2]=M[1];L[c+48>>2]=4096;L[c+52>>2]=d.blocks;L[c+56>>2]=d.atime.getTime()/1E3|0;L[c+60>>2]=
+0;L[c+64>>2]=d.mtime.getTime()/1E3|0;L[c+68>>2]=0;L[c+72>>2]=d.ctime.getTime()/1E3|0;L[c+76>>2]=0;M=[d.ino>>>0,(N=d.ino,1<=+Math.abs(N)?0<N?(Math.min(+Math.floor(N/4294967296),4294967295)|0)>>>0:~~+Math.ceil((N-+(~~N>>>0))/4294967296)>>>0:0)];L[c+80>>2]=M[0];L[c+84>>2]=M[1];return 0}var Uc=void 0;function Vc(){Uc+=4;return L[Uc-4>>2]}function Z(a){a=S[a];if(!a)throw new P(8);return a}var Wc;
+Aa?Wc=function(){var a=process.hrtime();return 1E3*a[0]+a[1]/1E6}:"undefined"!==typeof dateNow?Wc=dateNow:Wc=function(){return performance.now()};var Xc={};function Yc(){if(!Zc){var a={USER:"web_user",LOGNAME:"web_user",PATH:"/",PWD:"/",HOME:"/home/web_user",LANG:("object"===typeof navigator&&navigator.languages&&navigator.languages[0]||"C").replace("-","_")+".UTF-8",_:xa||"./this.program"},b;for(b in Xc)void 0===Xc[b]?delete a[b]:a[b]=Xc[b];var c=[];for(b in a)c.push(b+"="+a[b]);Zc=c}return Zc}var Zc;
+function Tb(a,b,c,d){a||(a=this);this.parent=a;this.Wa=a.Wa;this.ab=null;this.id=Mb++;this.name=b;this.mode=c;this.Ma={};this.Na={};this.rdev=d}Object.defineProperties(Tb.prototype,{read:{get:function(){return 365===(this.mode&365)},set:function(a){a?this.mode|=365:this.mode&=-366}},write:{get:function(){return 146===(this.mode&146)},set:function(a){a?this.mode|=146:this.mode&=-147}}});Oc();U=Array(4096);ac(Q,"/");X("/tmp");X("/home");X("/home/web_user");
+(function(){X("/dev");Cb(259,{read:function(){return 0},write:function(b,c,d,f){return f}});bc("/dev/null",259);Bb(1280,Eb);Bb(1536,Fb);bc("/dev/tty",1280);bc("/dev/tty1",1536);var a=yb();Qc("random",a);Qc("urandom",a);X("/dev/shm");X("/dev/shm/tmp")})();
+(function(){X("/proc");var a=X("/proc/self");X("/proc/self/fd");ac({Wa:function(){var b=Hb(a,"fd",16895,73);b.Ma={lookup:function(c,d){var f=S[+d];if(!f)throw new P(8);c={parent:null,Wa:{yb:"fake"},Ma:{readlink:function(){return f.path}}};return c.parent=c}};return b}},"/proc/self/fd")})();function ma(a,b){var c=Array(ba(a)+1);a=k(a,c,0,c.length);b&&(c.length=a);return c}
+var cd={a:function(a,b,c,d){I("Assertion failed: "+A(a)+", at: "+[b?A(b):"unknown filename",c,d?A(d):"unknown function"])},s:function(a,b){mb();a=new Date(1E3*L[a>>2]);L[b>>2]=a.getSeconds();L[b+4>>2]=a.getMinutes();L[b+8>>2]=a.getHours();L[b+12>>2]=a.getDate();L[b+16>>2]=a.getMonth();L[b+20>>2]=a.getFullYear()-1900;L[b+24>>2]=a.getDay();var c=new Date(a.getFullYear(),0,1);L[b+28>>2]=(a.getTime()-c.getTime())/864E5|0;L[b+36>>2]=-(60*a.getTimezoneOffset());var d=(new Date(a.getFullYear(),6,1)).getTimezoneOffset();
+c=c.getTimezoneOffset();a=(d!=c&&a.getTimezoneOffset()==Math.min(c,d))|0;L[b+32>>2]=a;a=L[qb()+(a?4:0)>>2];L[b+40>>2]=a;return b},F:function(a,b){try{a=A(a);if(b&-8)var c=-28;else{var d;(d=W(a,{Ya:!0}).node)?(a="",b&4&&(a+="r"),b&2&&(a+="w"),b&1&&(a+="x"),c=a&&Sb(d,a)?-2:0):c=-44}return c}catch(f){return"undefined"!==typeof Y&&f instanceof P||I(f),-f.Pa}},h:function(a,b){try{return a=A(a),fa(a,b),0}catch(c){return"undefined"!==typeof Y&&c instanceof P||I(c),-c.Pa}},y:function(a){try{return a=A(a),
+fc(a),0}catch(b){return"undefined"!==typeof Y&&b instanceof P||I(b),-b.Pa}},i:function(a,b){try{var c=S[a];if(!c)throw new P(8);fa(c.node,b);return 0}catch(d){return"undefined"!==typeof Y&&d instanceof P||I(d),-d.Pa}},z:function(a){try{var b=S[a];if(!b)throw new P(8);fc(b.node);return 0}catch(c){return"undefined"!==typeof Y&&c instanceof P||I(c),-c.Pa}},b:function(a,b,c){Uc=c;try{var d=Z(a);switch(b){case 0:var f=Vc();return 0>f?-28:v(d.path,d.flags,0,f).fd;case 1:case 2:return 0;case 3:return d.flags;
+case 4:return f=Vc(),d.flags|=f,0;case 12:return f=Vc(),Ma[f+0>>1]=2,0;case 13:case 14:return 0;case 16:case 8:return-28;case 9:return L[$c()>>2]=28,-1;default:return-28}}catch(g){return"undefined"!==typeof Y&&g instanceof P||I(g),-g.Pa}},j:function(a,b){try{var c=Z(a);return Tc(dc,c.path,b)}catch(d){return"undefined"!==typeof Y&&d instanceof P||I(d),-d.Pa}},E:function(a,b,c){try{var d=S[a];if(!d)throw new P(8);if(0===(d.flags&2097155))throw new P(28);hc(d.node,c);return 0}catch(f){return"undefined"!==
+typeof Y&&f instanceof P||I(f),-f.Pa}},C:function(a,b){try{if(0===b)return-28;if(b<ba("/")+1)return-68;k("/",n,a,b);return a}catch(c){return"undefined"!==typeof Y&&c instanceof P||I(c),-c.Pa}},x:function(){return 0},d:function(){return 42},k:function(a,b){try{return a=A(a),Tc(ec,a,b)}catch(c){return"undefined"!==typeof Y&&c instanceof P||I(c),-c.Pa}},J:function(a,b){try{return a=A(a),a=r(a),"/"===a[a.length-1]&&(a=a.substr(0,a.length-1)),X(a,b),0}catch(c){return"undefined"!==typeof Y&&c instanceof
+P||I(c),-c.Pa}},G:function(a,b,c,d,f,g){try{a:{g<<=12;var m=!1;if(0!==(d&16)&&0!==a%65536)var t=-28;else{if(0!==(d&32)){var w=ad(65536,b);if(!w){t=-48;break a}bd(w,0,b);m=!0}else{var u=S[f];if(!u){t=-8;break a}var C=g;if(0!==(c&2)&&0===(d&2)&&2!==(u.flags&2097155))throw new P(2);if(1===(u.flags&2097155))throw new P(2);if(!u.Na.hb)throw new P(43);var H=u.Na.hb(u,a,b,C,c,d);w=H.Nb;m=H.kb}Sc[w]={Kb:w,Jb:b,kb:m,fd:f,Mb:c,flags:d,offset:g};t=w}}return t}catch(aa){return"undefined"!==typeof Y&&aa instanceof
+P||I(aa),-aa.Pa}},H:function(a,b){try{if(-1===(a|0)||0===b)var c=-28;else{var d=Sc[a];if(d&&b===d.Jb){var f=S[d.fd];if(f&&d.Mb&2){var g=d.flags,m=d.offset,t=n.slice(a,a+b);f&&f.Na.ib&&f.Na.ib(f,t,m,b,g)}Sc[a]=null;d.kb&&oa(d.Kb)}c=0}return c}catch(w){return"undefined"!==typeof Y&&w instanceof P||I(w),-w.Pa}},I:function(a,b,c){Uc=c;try{var d=A(a),f=c?Vc():0;return v(d,b,f).fd}catch(g){return"undefined"!==typeof Y&&g instanceof P||I(g),-g.Pa}},A:function(a,b,c){try{a=A(a);if(0>=c)var d=-28;else{var f=
+Ob(a),g=Math.min(c,ba(f)),m=z[b+g];k(f,n,b,c+1);z[b+g]=m;d=g}return d}catch(t){return"undefined"!==typeof Y&&t instanceof P||I(t),-t.Pa}},u:function(a){try{a=A(a);var b=W(a,{parent:!0}).node,c=xb(a),d=Jb(b,c),f=Xb(b,c,!0);if(f)throw new P(f);if(!b.Ma.rmdir)throw new P(63);if(d.ab)throw new P(10);try{V.willDeletePath&&V.willDeletePath(a)}catch(g){J("FS.trackingDelegate['willDeletePath']('"+a+"') threw an exception: "+g.message)}b.Ma.rmdir(b,c);Rb(d);try{if(V.onDeletePath)V.onDeletePath(a)}catch(g){J("FS.trackingDelegate['onDeletePath']('"+
+a+"') threw an exception: "+g.message)}return 0}catch(g){return"undefined"!==typeof Y&&g instanceof P||I(g),-g.Pa}},e:function(a,b){try{return a=A(a),Tc(dc,a,b)}catch(c){return"undefined"!==typeof Y&&c instanceof P||I(c),-c.Pa}},w:function(a){try{return a=A(a),ua(a),0}catch(b){return"undefined"!==typeof Y&&b instanceof P||I(b),-b.Pa}},l:function(){return 2147483648},n:function(a,b,c){n.copyWithin(a,b,b+c)},c:function(a){var b=n.length;a>>>=0;if(2147483648<a)return!1;for(var c=1;4>=c;c*=2){var d=b*
+(1+.2/c);d=Math.min(d,a+100663296);d=Math.max(a,d);0<d%65536&&(d+=65536-d%65536);a:{try{Pa.grow(Math.min(2147483648,d)-Ya.byteLength+65535>>>16);Za();var f=1;break a}catch(g){}f=void 0}if(f)return!0}return!1},r:function(a){for(var b=Wc();Wc()-b<a;);},p:function(a,b){try{var c=0;Yc().forEach(function(d,f){var g=b+c;f=L[a+4*f>>2]=g;for(g=0;g<d.length;++g)z[f++>>0]=d.charCodeAt(g);z[f>>0]=0;c+=d.length+1});return 0}catch(d){return"undefined"!==typeof Y&&d instanceof P||I(d),d.Pa}},q:function(a,b){try{var c=
+Yc();L[a>>2]=c.length;var d=0;c.forEach(function(f){d+=f.length+1});L[b>>2]=d;return 0}catch(f){return"undefined"!==typeof Y&&f instanceof P||I(f),f.Pa}},f:function(a){try{var b=Z(a);la(b);return 0}catch(c){return"undefined"!==typeof Y&&c instanceof P||I(c),c.Pa}},o:function(a,b){try{var c=Z(a);z[b>>0]=c.tty?2:R(c.mode)?3:40960===(c.mode&61440)?7:4;return 0}catch(d){return"undefined"!==typeof Y&&d instanceof P||I(d),d.Pa}},t:function(a,b,c,d){try{a:{for(var f=Z(a),g=a=0;g<c;g++){var m=L[b+(8*g+4)>>
+2],t=Nc(f,z,L[b+8*g>>2],m,void 0);if(0>t){var w=-1;break a}a+=t;if(t<m)break}w=a}L[d>>2]=w;return 0}catch(u){return"undefined"!==typeof Y&&u instanceof P||I(u),u.Pa}},m:function(a,b,c,d,f){try{var g=Z(a);a=4294967296*c+(b>>>0);if(-9007199254740992>=a||9007199254740992<=a)return-61;Lc(g,a,d);M=[g.position>>>0,(N=g.position,1<=+Math.abs(N)?0<N?(Math.min(+Math.floor(N/4294967296),4294967295)|0)>>>0:~~+Math.ceil((N-+(~~N>>>0))/4294967296)>>>0:0)];L[f>>2]=M[0];L[f+4>>2]=M[1];g.ob&&0===a&&0===d&&(g.ob=
+null);return 0}catch(m){return"undefined"!==typeof Y&&m instanceof P||I(m),m.Pa}},D:function(a){try{var b=Z(a);return b.Na&&b.Na.fsync?-b.Na.fsync(b):0}catch(c){return"undefined"!==typeof Y&&c instanceof P||I(c),c.Pa}},v:function(a,b,c,d){try{a:{for(var f=Z(a),g=a=0;g<c;g++){var m=ka(f,z,L[b+8*g>>2],L[b+(8*g+4)>>2],void 0);if(0>m){var t=-1;break a}a+=m}t=a}L[d>>2]=t;return 0}catch(w){return"undefined"!==typeof Y&&w instanceof P||I(w),w.Pa}},g:function(a){var b=Date.now();L[a>>2]=b/1E3|0;L[a+4>>2]=
+b%1E3*1E3|0;return 0},K:function(a){var b=Date.now()/1E3|0;a&&(L[a>>2]=b);return b},B:function(a,b){if(b){var c=b+8;b=1E3*L[c>>2];b+=L[c+4>>2]/1E3}else b=Date.now();a=A(a);try{var d=W(a,{Ya:!0}).node;d.Ma.Ta(d,{timestamp:Math.max(b,b)});var f=0}catch(g){if(!(g instanceof P)){b:{f=Error();if(!f.stack){try{throw Error();}catch(m){f=m}if(!f.stack){f="(no stack trace available)";break b}}f=f.stack.toString()}e.extraStackTrace&&(f+="\n"+e.extraStackTrace());f=lb(f);throw g+" : "+f;}f=g.Pa;L[$c()>>2]=f;
+f=-1}return f}};
+(function(){function a(f){e.asm=f.exports;Pa=e.asm.L;Za();K=e.asm.Da;ab.unshift(e.asm.M);db--;e.monitorRunDependencies&&e.monitorRunDependencies(db);0==db&&(null!==eb&&(clearInterval(eb),eb=null),fb&&(f=fb,fb=null,f()))}function b(f){a(f.instance)}function c(f){return jb().then(function(g){return WebAssembly.instantiate(g,d)}).then(f,function(g){J("failed to asynchronously prepare wasm: "+g);I(g)})}var d={a:cd};db++;e.monitorRunDependencies&&e.monitorRunDependencies(db);if(e.instantiateWasm)try{return e.instantiateWasm(d,a)}catch(f){return J("Module.instantiateWasm callback failed with error: "+
+f),!1}(function(){return La||"function"!==typeof WebAssembly.instantiateStreaming||gb()||O.startsWith("file://")||"function"!==typeof fetch?c(b):fetch(O,{credentials:"same-origin"}).then(function(f){return WebAssembly.instantiateStreaming(f,d).then(b,function(g){J("wasm streaming compile failed: "+g);J("falling back to ArrayBuffer instantiation");return c(b)})})})();return{}})();e.___wasm_call_ctors=function(){return(e.___wasm_call_ctors=e.asm.M).apply(null,arguments)};
+var bd=e._memset=function(){return(bd=e._memset=e.asm.N).apply(null,arguments)};e._sqlite3_free=function(){return(e._sqlite3_free=e.asm.O).apply(null,arguments)};var $c=e.___errno_location=function(){return($c=e.___errno_location=e.asm.P).apply(null,arguments)};e._sqlite3_step=function(){return(e._sqlite3_step=e.asm.Q).apply(null,arguments)};e._sqlite3_finalize=function(){return(e._sqlite3_finalize=e.asm.R).apply(null,arguments)};
+e._sqlite3_prepare_v2=function(){return(e._sqlite3_prepare_v2=e.asm.S).apply(null,arguments)};e._sqlite3_reset=function(){return(e._sqlite3_reset=e.asm.T).apply(null,arguments)};e._sqlite3_clear_bindings=function(){return(e._sqlite3_clear_bindings=e.asm.U).apply(null,arguments)};e._sqlite3_value_blob=function(){return(e._sqlite3_value_blob=e.asm.V).apply(null,arguments)};e._sqlite3_value_text=function(){return(e._sqlite3_value_text=e.asm.W).apply(null,arguments)};
+e._sqlite3_value_bytes=function(){return(e._sqlite3_value_bytes=e.asm.X).apply(null,arguments)};e._sqlite3_value_double=function(){return(e._sqlite3_value_double=e.asm.Y).apply(null,arguments)};e._sqlite3_value_int=function(){return(e._sqlite3_value_int=e.asm.Z).apply(null,arguments)};e._sqlite3_value_type=function(){return(e._sqlite3_value_type=e.asm._).apply(null,arguments)};e._sqlite3_result_blob=function(){return(e._sqlite3_result_blob=e.asm.$).apply(null,arguments)};
+e._sqlite3_result_double=function(){return(e._sqlite3_result_double=e.asm.aa).apply(null,arguments)};e._sqlite3_result_error=function(){return(e._sqlite3_result_error=e.asm.ba).apply(null,arguments)};e._sqlite3_result_int=function(){return(e._sqlite3_result_int=e.asm.ca).apply(null,arguments)};e._sqlite3_result_int64=function(){return(e._sqlite3_result_int64=e.asm.da).apply(null,arguments)};e._sqlite3_result_null=function(){return(e._sqlite3_result_null=e.asm.ea).apply(null,arguments)};
+e._sqlite3_result_text=function(){return(e._sqlite3_result_text=e.asm.fa).apply(null,arguments)};e._sqlite3_column_count=function(){return(e._sqlite3_column_count=e.asm.ga).apply(null,arguments)};e._sqlite3_data_count=function(){return(e._sqlite3_data_count=e.asm.ha).apply(null,arguments)};e._sqlite3_column_blob=function(){return(e._sqlite3_column_blob=e.asm.ia).apply(null,arguments)};e._sqlite3_column_bytes=function(){return(e._sqlite3_column_bytes=e.asm.ja).apply(null,arguments)};
+e._sqlite3_column_double=function(){return(e._sqlite3_column_double=e.asm.ka).apply(null,arguments)};e._sqlite3_column_text=function(){return(e._sqlite3_column_text=e.asm.la).apply(null,arguments)};e._sqlite3_column_type=function(){return(e._sqlite3_column_type=e.asm.ma).apply(null,arguments)};e._sqlite3_column_name=function(){return(e._sqlite3_column_name=e.asm.na).apply(null,arguments)};e._sqlite3_bind_blob=function(){return(e._sqlite3_bind_blob=e.asm.oa).apply(null,arguments)};
+e._sqlite3_bind_double=function(){return(e._sqlite3_bind_double=e.asm.pa).apply(null,arguments)};e._sqlite3_bind_int=function(){return(e._sqlite3_bind_int=e.asm.qa).apply(null,arguments)};e._sqlite3_bind_text=function(){return(e._sqlite3_bind_text=e.asm.ra).apply(null,arguments)};e._sqlite3_bind_parameter_index=function(){return(e._sqlite3_bind_parameter_index=e.asm.sa).apply(null,arguments)};e._sqlite3_sql=function(){return(e._sqlite3_sql=e.asm.ta).apply(null,arguments)};
+e._sqlite3_normalized_sql=function(){return(e._sqlite3_normalized_sql=e.asm.ua).apply(null,arguments)};e._sqlite3_errmsg=function(){return(e._sqlite3_errmsg=e.asm.va).apply(null,arguments)};e._sqlite3_exec=function(){return(e._sqlite3_exec=e.asm.wa).apply(null,arguments)};e._sqlite3_changes=function(){return(e._sqlite3_changes=e.asm.xa).apply(null,arguments)};e._sqlite3_close_v2=function(){return(e._sqlite3_close_v2=e.asm.ya).apply(null,arguments)};
+e._sqlite3_create_function_v2=function(){return(e._sqlite3_create_function_v2=e.asm.za).apply(null,arguments)};e._sqlite3_open=function(){return(e._sqlite3_open=e.asm.Aa).apply(null,arguments)};var ca=e._malloc=function(){return(ca=e._malloc=e.asm.Ba).apply(null,arguments)},oa=e._free=function(){return(oa=e._free=e.asm.Ca).apply(null,arguments)};e._RegisterExtensionFunctions=function(){return(e._RegisterExtensionFunctions=e.asm.Ea).apply(null,arguments)};
+var qb=e.__get_tzname=function(){return(qb=e.__get_tzname=e.asm.Fa).apply(null,arguments)},pb=e.__get_daylight=function(){return(pb=e.__get_daylight=e.asm.Ga).apply(null,arguments)},ob=e.__get_timezone=function(){return(ob=e.__get_timezone=e.asm.Ha).apply(null,arguments)},pa=e.stackSave=function(){return(pa=e.stackSave=e.asm.Ia).apply(null,arguments)},ra=e.stackRestore=function(){return(ra=e.stackRestore=e.asm.Ja).apply(null,arguments)},y=e.stackAlloc=function(){return(y=e.stackAlloc=e.asm.Ka).apply(null,
+arguments)},ad=e._memalign=function(){return(ad=e._memalign=e.asm.La).apply(null,arguments)};e.cwrap=function(a,b,c,d){c=c||[];var f=c.every(function(g){return"number"===g});return"string"!==b&&f&&!d?Ra(a):function(){return Sa(a,b,c,arguments)}};e.UTF8ToString=A;e.stackSave=pa;e.stackRestore=ra;e.stackAlloc=y;var dd;fb=function ed(){dd||fd();dd||(fb=ed)};
+function fd(){function a(){if(!dd&&(dd=!0,e.calledRun=!0,!Qa)){e.noFSInit||Pc||(Pc=!0,Oc(),e.stdin=e.stdin,e.stdout=e.stdout,e.stderr=e.stderr,e.stdin?Qc("stdin",e.stdin):cc("/dev/tty","/dev/stdin"),e.stdout?Qc("stdout",null,e.stdout):cc("/dev/tty","/dev/stdout"),e.stderr?Qc("stderr",null,e.stderr):cc("/dev/tty1","/dev/stderr"),v("/dev/stdin",0),v("/dev/stdout",1),v("/dev/stderr",1));Nb=!1;kb(ab);if(e.onRuntimeInitialized)e.onRuntimeInitialized();if(e.postRun)for("function"==typeof e.postRun&&(e.postRun=
+[e.postRun]);e.postRun.length;){var b=e.postRun.shift();bb.unshift(b)}kb(bb)}}if(!(0<db)){if(e.preRun)for("function"==typeof e.preRun&&(e.preRun=[e.preRun]);e.preRun.length;)cb();kb($a);0<db||(e.setStatus?(e.setStatus("Running..."),setTimeout(function(){setTimeout(function(){e.setStatus("")},1);a()},1)):a())}}e.run=fd;if(e.preInit)for("function"==typeof e.preInit&&(e.preInit=[e.preInit]);0<e.preInit.length;)e.preInit.pop()();fd();
+
+
+        // The shell-pre.js and emcc-generated code goes above
+        return Module;
+    }); // The end of the promise being returned
+
+  return initSqlJsPromise;
+} // The end of our initSqlJs function
+
+// This bit below is copied almost exactly from what you get when you use the MODULARIZE=1 flag with emcc
+// However, we don't want to use the emcc modularization. See shell-pre.js
+if (typeof exports === 'object' && typeof module === 'object'){
+    module.exports = initSqlJs;
+    // This will allow the module to be used in ES6 or CommonJS
+    module.exports.default = initSqlJs;
+}
+else if (typeof define === 'function' && define['amd']) {
+    define([], function() { return initSqlJs; });
+}
+else if (typeof exports === 'object'){
+    exports["Module"] = initSqlJs;
+}

lib/sql-js/make.sh

@@ -0,0 +1,9 @@
+#!/bin/bash -e
+
+docker build -t sqliteviz/sqljs .
+
+rm -r dist || true
+
+CONTAINER=$(docker create sqliteviz/sqljs)
+docker cp $CONTAINER:/tmp/build/dist .
+docker rm $CONTAINER

lib/sql-js/package.json

@@ -0,0 +1,4 @@
+{
+  "name": "sql.js",
+  "main": "./dist/sql-wasm.js"
+}

package.json

@@ -1,6 +1,6 @@
 {
   "name": "sqliteviz",
-  "version": "1.0.0",
+  "version": "0.14.1",
   "license": "Apache-2.0",
   "private": true,
   "scripts": {
@@ -12,15 +12,14 @@
   "dependencies": {
     "codemirror": "^5.57.0",
     "core-js": "^3.6.5",
-    "debounce": "^1.2.0",
     "nanoid": "^3.1.12",
-    "papaparse": "^5.3.0",
-    "plotly.js": "^1.57.1",
+    "papaparse": "^5.3.1",
+    "plotly.js": "^1.58.4",
     "promise-worker": "^2.0.1",
     "react": "^16.13.1",
-    "react-chart-editor": "^0.42.0",
+    "react-chart-editor": "^0.45.0",
     "react-dom": "^16.13.1",
-    "sql.js": "^1.3.0",
+    "sql.js": "file:./lib/sql-js",
     "sqlite-parser": "^1.0.1",
     "vue": "^2.6.11",
     "vue-codemirror": "^4.0.6",

public/index.html

@@ -8,7 +8,7 @@
     <link rel="manifest" href="<%= BASE_URL %>manifest.webmanifest">
     <title><%= htmlWebpackPlugin.options.title %></title>
     <style>
-      #loading-wrapper {
+      #sqliteviz-loading-wrapper {
         position: fixed;
         width: 100%;
         height: 100%;
@@ -17,7 +17,7 @@
         background-color: white;
       }
     
-      #loading-text {
+      #sqliteviz-loading-text {
         display: block;
         position: absolute;
         top: 50%;
@@ -28,7 +28,7 @@
         font-size: 20px;
       }
       
-      .svg-container {
+      #sqliteviz-loading-wrapper svg {
         display: block;
         position: absolute;
         left: 50%;
@@ -36,7 +36,7 @@
         transform: translate(-50%, -50%);
       }
 
-      .loader-svg {
+      #sqliteviz-loading-wrapper circle {
         position: absolute;
         left: 0; right: 0; top: 0; bottom: 0;
         fill: none;
@@ -45,16 +45,16 @@
         stroke: #119DFF;
       }
 
-      .loader-svg.bg {
+      #sqliteviz-loading-wrapper circle.bg {
         stroke: #C8D4E3;
       }
 
-      .loader-svg.front {
+      #sqliteviz-loading-wrapper circle.front {
         stroke-dasharray: 402px;
-        animation: loading 2s linear 0s infinite;
+        animation: sqliteviz-loading 2s linear 0s infinite;
       }
 
-      @keyframes loading {
+      @keyframes sqliteviz-loading {
         0% {
           stroke-dasharray: 100px 402px;
           stroke-dashoffset: 0;
@@ -75,17 +75,17 @@
       <strong>We're sorry but <%= htmlWebpackPlugin.options.title %> doesn't work properly without JavaScript enabled. Please enable it to continue.</strong>
     </noscript>
     <div id="app">
-      <div id="loading-wrapper">
-        <div id="loading-text">LOADING</div>
-        <svg class="svg-container" height="170" width="170" viewBox="0 0 170 170">
+      <div id="sqliteviz-loading-wrapper">
+        <div id="sqliteviz-loading-text">LOADING</div>
+        <svg height="170" width="170" viewBox="0 0 170 170">
           <circle
-            class="loader-svg bg"
+            class="bg"
             cx="85"
             cy="85"
             r="80"
           />
           <circle
-            class="loader-svg front"
+            class="front"
             cx="85"
             cy="85"
             r="80"

public/manifest.webmanifest

@@ -3,6 +3,16 @@
   "description": "Sqliteviz is a single-page application for fully client-side visualisation of SQLite databases or CSV.",
   "display": "fullscreen",
   "icons": [
+    {
+      "src": "favicon.png",
+      "sizes": "32x32",
+      "type": "image/png"
+    },
+    {
+      "src": "Logo48x48.png",
+      "sizes": "48x48",
+      "type": "image/png"
+    },
     {
       "src": "Logo192x192.png",
       "sizes": "192x192",

src/App.vue

@@ -60,4 +60,7 @@ button,
 body {
   margin: 0;
 }
+.CodeMirror-hints {
+  z-index: 999 !important;
+}
 </style>

src/assets/styles/tables.css

@@ -1,5 +1,5 @@
 .rounded-bg {
-  padding: 40px 5px 5px;
+  padding: 35px 5px 5px;
   background-color: white;
   border-radius: 5px;
   position: relative;
@@ -36,7 +36,7 @@
 }
 table {
   min-width: 100%;
-  margin-top: -40px;
+  margin-top: -35px;
   border-collapse: collapse;
 }
 thead th, .fixed-header {
@@ -56,7 +56,7 @@ tbody td {
   border-right: 1px solid var(--color-border-light);
 }
 td, th, .fixed-header {
-  padding: 12px 24px;
+  padding: 8px 24px;
   white-space: nowrap;
 }
 

src/components/CsvImport/DelimiterSelector/index.vue

@@ -40,7 +40,7 @@
 </template>
 
 <script>
-import ascii from '@/ascii'
+import ascii from './ascii'
 import DropDownChevron from '@/components/svg/dropDownChevron'
 import ClearIcon from '@/components/svg/clear'
 

src/components/CsvImport/csv.js

@@ -10,14 +10,23 @@ export default {
   getResult (source) {
     const result = {}
     if (source.meta.fields) {
-      result.columns = source.meta.fields
+      result.columns = source.meta.fields.map(col => col.trim())
       result.values = source.data.map(row => {
         const resultRow = []
-        result.columns.forEach(col => { resultRow.push(row[col]) })
+        source.meta.fields.forEach(col => {
+          let value = row[col]
+          if (value instanceof Date) {
+            value = value.toISOString()
+          }
+          resultRow.push(value)
+        })
+
         return resultRow
       })
     } else {
-      result.values = source.data
+      result.values = source.data.map(row => row.map(value =>
+        value instanceof Date ? value.toISOString() : value
+      ))
       result.columns = []
       for (let i = 1; i <= source.data[0].length; i++) {
         result.columns.push(`col${i}`)

src/components/CsvImport/index.vue

@@ -0,0 +1,381 @@
+<template>
+  <modal
+    :name="dialogName"
+    classes="dialog"
+    height="auto"
+    width="80%"
+    scrollable
+    :clickToClose="false"
+  >
+    <div class="dialog-header">
+      CSV import
+      <close-icon @click="cancelCsvImport" :disabled="disableDialog"/>
+    </div>
+    <div class="dialog-body">
+      <text-field
+        label="Table name"
+        v-model="tableName"
+        width="484px"
+        :disabled="disableDialog"
+        :error-msg="tableNameError"
+        id="csv-table-name"
+      />
+      <div class="chars">
+        <delimiter-selector
+          v-model="delimiter"
+          width="210px"
+          class="char-input"
+          @input="previewCsv"
+          :disabled="disableDialog"
+        />
+        <text-field
+          label="Quote char"
+          hint="The character used to quote fields."
+          v-model="quoteChar"
+          width="93px"
+          :disabled="disableDialog"
+          class="char-input"
+          id="quote-char"
+        />
+        <text-field
+          label="Escape char"
+          hint='The character used to escape the quote character within a field (e.g. "column with ""quotes"" in text").'
+          max-hint-width="242px"
+          v-model="escapeChar"
+          width="93px"
+          :disabled="disableDialog"
+          class="char-input"
+          id="escape-char"
+        />
+      </div>
+      <check-box
+        @click="header = $event"
+        :init="true"
+        label="Use first row as column headers"
+        :disabled="disableDialog"
+      />
+      <sql-table
+        v-if="previewData && (previewData.values.length > 0 || previewData.columns.length > 0)"
+        :data-set="previewData"
+        height="160"
+        class="preview-table"
+        :preview="true"
+      />
+      <div v-else class="no-data">No data</div>
+      <logs
+        class="import-csv-errors"
+        :messages="importCsvMessages"
+      />
+    </div>
+    <div class="dialog-buttons-container">
+      <button
+        class="secondary"
+        :disabled="disableDialog"
+        @click="cancelCsvImport"
+        id="csv-cancel"
+      >
+        Cancel
+      </button>
+      <button
+        v-show="!importCsvCompleted"
+        class="primary"
+        :disabled="disableDialog"
+        @click="loadFromCsv(file)"
+        id="csv-import"
+      >
+        Import
+      </button>
+      <button
+        v-show="importCsvCompleted"
+        class="primary"
+        :disabled="disableDialog"
+        @click="finish"
+        id="csv-finish"
+      >
+        Finish
+      </button>
+    </div>
+  </modal>
+</template>
+
+<script>
+import csv from './csv'
+import CloseIcon from '@/components/svg/close'
+import TextField from '@/components/TextField'
+import DelimiterSelector from './DelimiterSelector'
+import CheckBox from '@/components/CheckBox'
+import SqlTable from '@/components/SqlTable'
+import Logs from '@/components/Logs'
+import time from '@/lib/utils/time'
+import fIo from '@/lib/utils/fileIo'
+
+export default {
+  name: 'CsvImport',
+  components: {
+    CloseIcon,
+    TextField,
+    DelimiterSelector,
+    CheckBox,
+    SqlTable,
+    Logs
+  },
+  props: ['file', 'db', 'dialogName'],
+  data () {
+    return {
+      disableDialog: false,
+      tableName: '',
+      delimiter: '',
+      quoteChar: '"',
+      escapeChar: '"',
+      header: true,
+      importCsvCompleted: false,
+      importCsvMessages: [],
+      previewData: null,
+      addedTable: null,
+      tableNameError: ''
+    }
+  },
+  watch: {
+    quoteChar () {
+      this.previewCsv()
+    },
+
+    escapeChar () {
+      this.previewCsv()
+    },
+
+    header () {
+      this.previewCsv()
+    },
+    tableName: time.debounce(function () {
+      this.tableNameError = ''
+      if (!this.tableName) {
+        return
+      }
+      this.db.validateTableName(this.tableName)
+        .catch(err => {
+          this.tableNameError = err.message + '. Try another table name.'
+        })
+    }, 400)
+  },
+  methods: {
+    cancelCsvImport () {
+      if (!this.disableDialog) {
+        if (this.addedTable) {
+          this.db.execute(`DROP TABLE "${this.addedTable}"`)
+          this.db.refreshSchema()
+        }
+        this.$modal.hide(this.dialogName)
+        this.$emit('cancel')
+      }
+    },
+    reset () {
+      this.header = true
+      this.quoteChar = '"'
+      this.escapeChar = '"'
+      this.delimiter = ''
+      this.tableName = ''
+      this.disableDialog = false
+      this.importCsvCompleted = false
+      this.importCsvMessages = []
+      this.previewData = null
+      this.addedTable = null
+      this.tableNameError = ''
+    },
+    open () {
+      this.tableName = this.db.sanitizeTableName(fIo.getFileName(this.file))
+      this.$modal.show(this.dialogName)
+    },
+    async previewCsv () {
+      this.importCsvCompleted = false
+      const config = {
+        preview: 3,
+        quoteChar: this.quoteChar || '"',
+        escapeChar: this.escapeChar,
+        header: this.header,
+        delimiter: this.delimiter
+      }
+      try {
+        const start = new Date()
+        const parseResult = await csv.parse(this.file, config)
+        const end = new Date()
+        this.previewData = parseResult.data
+        this.delimiter = parseResult.delimiter
+
+        // In parseResult.messages we can get parse errors
+        this.importCsvMessages = parseResult.messages || []
+
+        if (!parseResult.hasErrors) {
+          this.importCsvMessages.push({
+            message: `Preview parsing is completed in ${time.getPeriod(start, end)}.`,
+            type: 'success'
+          })
+        }
+      } catch (err) {
+        this.importCsvMessages = [{
+          message: err,
+          type: 'error'
+        }]
+      }
+    },
+    async loadFromCsv (file) {
+      if (!this.tableName) {
+        this.tableNameError = "Table name can't be empty"
+        return
+      }
+
+      this.disableDialog = true
+      const config = {
+        quoteChar: this.quoteChar || '"',
+        escapeChar: this.escapeChar,
+        header: this.header,
+        delimiter: this.delimiter
+      }
+      const parseCsvMsg = {
+        message: 'Parsing CSV...',
+        type: 'info'
+      }
+      this.importCsvMessages.push(parseCsvMsg)
+      const parseCsvLoadingIndicator = setTimeout(() => { parseCsvMsg.type = 'loading' }, 1000)
+
+      const importMsg = {
+        message: 'Importing CSV into a SQLite database...',
+        type: 'info'
+      }
+      let importLoadingIndicator = null
+
+      const updateProgress = progress => {
+        this.$set(importMsg, 'progress', progress)
+      }
+      const progressCounterId = this.db.createProgressCounter(updateProgress)
+
+      try {
+        let start = new Date()
+        const parseResult = await csv.parse(this.file, config)
+        let end = new Date()
+
+        if (!parseResult.hasErrors) {
+          const rowCount = parseResult.data.values.length
+          let period = time.getPeriod(start, end)
+          parseCsvMsg.type = 'success'
+
+          if (parseResult.messages.length > 0) {
+            this.importCsvMessages = this.importCsvMessages.concat(parseResult.messages)
+            parseCsvMsg.message = `${rowCount} rows are parsed in ${period}.`
+          } else {
+            // Inform about csv parsing success
+            parseCsvMsg.message = `${rowCount} rows are parsed successfully in ${period}.`
+          }
+
+          // Loading indicator for csv parsing is not needed anymore
+          clearTimeout(parseCsvLoadingIndicator)
+
+          // Add info about import start
+          this.importCsvMessages.push(importMsg)
+
+          // Show import progress after 1 second
+          importLoadingIndicator = setTimeout(() => {
+            importMsg.type = 'loading'
+          }, 1000)
+
+          // Add table
+          start = new Date()
+          await this.db.addTableFromCsv(this.tableName, parseResult.data, progressCounterId)
+          end = new Date()
+
+          this.addedTable = this.tableName
+          // Inform about import success
+          period = time.getPeriod(start, end)
+          importMsg.message = `Importing CSV into a SQLite database is completed in ${period}.`
+          importMsg.type = 'success'
+
+          // Loading indicator for import is not needed anymore
+          clearTimeout(importLoadingIndicator)
+
+          this.importCsvCompleted = true
+        } else {
+          parseCsvMsg.message = 'Parsing ended with errors.'
+          parseCsvMsg.type = 'info'
+          this.importCsvMessages = this.importCsvMessages.concat(parseResult.messages)
+        }
+      } catch (err) {
+        if (parseCsvMsg.type === 'loading') {
+          parseCsvMsg.type = 'info'
+        }
+
+        if (importMsg.type === 'loading') {
+          importMsg.type = 'info'
+        }
+
+        this.importCsvMessages.push({
+          message: err,
+          type: 'error'
+        })
+      }
+
+      clearTimeout(parseCsvLoadingIndicator)
+      clearTimeout(importLoadingIndicator)
+      this.db.deleteProgressCounter(progressCounterId)
+      this.disableDialog = false
+    },
+    async finish () {
+      this.$modal.hide(this.dialogName)
+      const stmt = [
+        '/*',
+        ` * Your CSV file has been imported into ${this.addedTable} table.`,
+        ' * You can run this SQL query to make all CSV records available for charting.',
+        ' */',
+        `SELECT * FROM "${this.addedTable}"`
+      ].join('\n')
+      const tabId = await this.$store.dispatch('addTab', { query: stmt })
+      this.$store.commit('setCurrentTabId', tabId)
+      this.importCsvCompleted = false
+      this.$emit('finish')
+    }
+  }
+}
+</script>
+
+<style scoped>
+.dialog-body {
+  padding-bottom: 0;
+}
+
+.chars {
+  display: flex;
+  align-items: flex-end;
+  margin: 24px 0 20px;
+}
+.char-input {
+  margin-right: 44px;
+}
+.preview-table {
+  margin-top: 18px;
+}
+
+.import-csv-errors {
+  height: 136px;
+  margin-top: 8px;
+}
+.no-data {
+  margin-top: 32px;
+  background-color: white;
+  border-radius: 5px;
+  position: relative;
+  border: 1px solid var(--color-border-light);
+  box-sizing: border-box;
+  height: 147px;
+  font-size: 13px;
+  color: var(--color-text-base);
+  display: flex;
+  justify-content: center;
+  align-items: center;
+}
+
+/* https://github.com/euvl/vue-js-modal/issues/623 */
+>>> .vm--modal {
+  max-width: 1152px;
+  margin: auto;
+  left: 0 !important;
+}
+</style>

src/components/DbUploader.vue

@@ -1,7 +1,7 @@
 <template>
   <div class="db-uploader-container" :style="{ width }">
     <change-db-icon v-if="type === 'small'" @click.native="browse"/>
-    <div v-if="['regular', 'illustrated'].includes(type)" class="drop-area-container">
+    <div v-if="type === 'illustrated'" class="drop-area-container">
       <div
         class="drop-area"
         @dragover.prevent="state = 'dragover'"
@@ -26,7 +26,8 @@
         ref="fileImg"
         :class="{
           'swing': state === 'dragover',
-          'fly': state === 'drop'
+          'fly': state === 'dropping',
+          'hidden': state === 'dropped'
         }"
         :src="require('@/assets/images/file.png')"
       />
@@ -41,112 +42,22 @@
     <div id="error" class="error"></div>
 
     <!--Parse csv dialog  -->
-    <modal name="parse" classes="dialog" height="auto" width="60%" :clickToClose="false">
-      <div class="dialog-header">
-        Import CSV
-        <close-icon @click="cancelCsvImport" :disabled="disableDialog"/>
-      </div>
-      <div class="dialog-body">
-        <div class="chars">
-          <delimiter-selector
-            v-model="delimiter"
-            width="210px"
-            class="char-input"
-            @input="previewCSV"
-            :disabled="disableDialog"
-          />
-          <text-field
-            label="Quote char"
-            hint="The character used to quote fields."
-            v-model="quoteChar"
-            width="93px"
-            :disabled="disableDialog"
-            class="char-input"
-            id="quote-char"
-          />
-          <text-field
-            label="Escape char"
-            hint='The character used to escape the quote character within a field (e.g. "column with ""quotes"" in text").'
-            max-hint-width="242px"
-            v-model="escapeChar"
-            width="93px"
-            :disabled="disableDialog"
-            class="char-input"
-            id="escape-char"
-          />
-        </div>
-        <check-box
-          @click="header = $event"
-          :init="true"
-          label="Use first row as column headers"
-          :disabled="disableDialog"
-        />
-        <sql-table
-          v-if="previewData"
-          :data-set="previewData"
-          height="160"
-          class="preview-table"
-          :preview="true"
-        />
-        <div v-if="!previewData" class="no-data">No data</div>
-        <logs
-          class="import-csv-errors"
-          :messages="importCsvMessages"
-        />
-      </div>
-      <div class="dialog-buttons-container">
-        <button
-          class="secondary"
-          :disabled="disableDialog"
-          @click="cancelCsvImport"
-          id="csv-cancel"
-        >
-          Cancel
-        </button>
-        <button
-          v-show="!importCsvCompleted"
-          class="primary"
-          :disabled="disableDialog"
-          @click="loadFromCsv(file)"
-          id="csv-import"
-        >
-          Import
-        </button>
-        <button
-          v-show="importCsvCompleted"
-          class="primary"
-          :disabled="disableDialog"
-          @click="finish"
-          id="csv-finish"
-        >
-          Finish
-        </button>
-      </div>
-    </modal>
+    <csv-import
+      ref="addCsv"
+      :file="file"
+      :db="newDb"
+      dialog-name="importFromCsv"
+      @cancel="cancelCsvImport"
+      @finish="finish"
+    />
   </div>
 </template>
 
 <script>
-import fu from '@/file.utils'
-import csv from '@/csv'
-import CloseIcon from '@/components/svg/close'
-import TextField from '@/components/TextField'
-import DelimiterSelector from '@/components/DelimiterSelector'
-import CheckBox from '@/components/CheckBox'
-import SqlTable from '@/components/SqlTable'
-import Logs from '@/components/Logs'
+import fIo from '@/lib/utils/fileIo'
 import ChangeDbIcon from '@/components/svg/changeDb'
-import time from '@/time'
-import database from '@/database'
-
-const csvMimeTypes = [
-  'text/csv',
-  'text/x-csv',
-  'application/x-csv',
-  'application/csv',
-  'text/x-comma-separated-values',
-  'text/comma-separated-values'
-]
+import database from '@/lib/database'
+import CsvImport from '@/components/CsvImport'
 
 export default {
   name: 'DbUploader',
@@ -154,9 +65,9 @@ export default {
     type: {
       type: String,
       required: false,
-      default: 'regular',
+      default: 'small',
       validator: (value) => {
-        return ['regular', 'illustrated', 'small'].includes(value)
+        return ['illustrated', 'small'].includes(value)
       }
     },
     width: {
@@ -167,27 +78,13 @@ export default {
   },
   components: {
     ChangeDbIcon,
-    TextField,
-    DelimiterSelector,
-    CloseIcon,
-    CheckBox,
-    SqlTable,
-    Logs
+    CsvImport
   },
   data () {
     return {
       state: '',
       animationPromise: Promise.resolve(),
       file: null,
-      schema: null,
-      delimiter: '',
-      quoteChar: '"',
-      escapeChar: '"',
-      header: true,
-      previewData: null,
-      importCsvMessages: [],
-      disableDialog: false,
-      importCsvCompleted: false,
       newDb: null
     }
   },
@@ -196,206 +93,50 @@ export default {
       this.animationPromise = new Promise((resolve) => {
         this.$refs.fileImg.addEventListener('animationend', event => {
           if (event.animationName.startsWith('fly')) {
+            this.state = 'dropped'
             resolve()
           }
         })
       })
     }
   },
-  watch: {
-    quoteChar () {
-      this.previewCSV()
-    },
-
-    escapeChar () {
-      this.previewCSV()
-    },
-
-    header () {
-      this.previewCSV()
-    }
-  },
   methods: {
     cancelCsvImport () {
-      if (!this.disableDialog) {
-        this.$modal.hide('parse')
-        if (this.newDb) {
-          this.newDb.shutDown()
-          this.newDb = null
-        }
+      if (this.newDb) {
+        this.newDb.shutDown()
+        this.newDb = null
       }
     },
 
     async finish () {
       this.$store.commit('setDb', this.newDb)
-      this.$store.commit('saveSchema', this.schema)
-      if (this.importCsvCompleted) {
-        this.$modal.hide('parse')
-        const tabId = await this.$store.dispatch('addTab', { query: 'select * from csv_import' })
-        this.$store.commit('setCurrentTabId', tabId)
-      }
       if (this.$route.path !== '/editor') {
         this.$router.push('/editor')
       }
     },
 
-    async previewCSV () {
-      this.importCsvCompleted = false
-      const config = {
-        preview: 3,
-        quoteChar: this.quoteChar || '"',
-        escapeChar: this.escapeChar,
-        header: this.header,
-        delimiter: this.delimiter
-      }
-      try {
-        const start = new Date()
-        const parseResult = await csv.parse(this.file, config)
-        const end = new Date()
-        this.previewData = parseResult.data
-        this.delimiter = parseResult.delimiter
-
-        // In parseResult.messages we can get parse errors
-        this.importCsvMessages = parseResult.messages || []
-
-        if (!parseResult.hasErrors) {
-          this.importCsvMessages.push({
-            message: `Preview parsing is completed in ${time.getPeriod(start, end)}.`,
-            type: 'success'
-          })
-        }
-      } catch (err) {
-        this.importCsvMessages = [{
-          message: err,
-          type: 'error'
-        }]
-      }
-    },
-
     loadDb (file) {
-      this.newDb = database.getNewDatabase()
       return Promise.all([this.newDb.loadDb(file), this.animationPromise])
-        .then(([schema]) => {
-          this.schema = schema
-          this.finish()
-        })
-    },
-
-    async loadFromCsv (file) {
-      this.disableDialog = true
-      const config = {
-        quoteChar: this.quoteChar || '"',
-        escapeChar: this.escapeChar,
-        header: this.header,
-        delimiter: this.delimiter
-      }
-      const parseCsvMsg = {
-        message: 'Parsing CSV...',
-        type: 'info'
-      }
-      this.importCsvMessages.push(parseCsvMsg)
-      const parseCsvLoadingIndicator = setTimeout(() => { parseCsvMsg.type = 'loading' }, 1000)
-
-      const importMsg = {
-        message: 'Importing CSV into a SQLite database...',
-        type: 'info'
-      }
-      let importLoadingIndicator = null
-
-      const updateProgress = progress => {
-        this.$set(importMsg, 'progress', progress)
-      }
-      this.newDb = database.getNewDatabase()
-      const progressCounterId = this.newDb.createProgressCounter(updateProgress)
-
-      try {
-        let start = new Date()
-        const parseResult = await csv.parse(this.file, config)
-        let end = new Date()
-
-        if (!parseResult.hasErrors) {
-          const rowCount = parseResult.data.values.length
-          let period = time.getPeriod(start, end)
-          parseCsvMsg.type = 'success'
-
-          if (parseResult.messages.length > 0) {
-            this.importCsvMessages = this.importCsvMessages.concat(parseResult.messages)
-            parseCsvMsg.message = `${rowCount} rows are parsed in ${period}.`
-          } else {
-            // Inform about csv parsing success
-            parseCsvMsg.message = `${rowCount} rows are parsed successfully in ${period}.`
-          }
-
-          // Loading indicator for csv parsing is not needed anymore
-          clearTimeout(parseCsvLoadingIndicator)
-
-          // Add info about import start
-          this.importCsvMessages.push(importMsg)
-
-          // Show import progress after 1 second
-          importLoadingIndicator = setTimeout(() => {
-            importMsg.type = 'loading'
-          }, 1000)
-
-          // Create db with csv table and get schema
-          const name = file.name.replace(/\.[^.]+$/, '')
-          start = new Date()
-          this.schema = await this.newDb.createDb(name, parseResult.data, progressCounterId)
-          end = new Date()
-
-          // Inform about import success
-          period = time.getPeriod(start, end)
-          importMsg.message = `Importing CSV into a SQLite database is completed in ${period}.`
-          importMsg.type = 'success'
-
-          // Loading indicator for import is not needed anymore
-          clearTimeout(importLoadingIndicator)
-
-          this.importCsvCompleted = true
-        } else {
-          parseCsvMsg.message = 'Parsing ended with errors.'
-          parseCsvMsg.type = 'info'
-          this.importCsvMessages = this.importCsvMessages.concat(parseResult.messages)
-        }
-      } catch (err) {
-        if (parseCsvMsg.type === 'loading') {
-          parseCsvMsg.type = 'info'
-        }
-
-        if (importMsg.type === 'loading') {
-          importMsg.type = 'info'
-        }
-
-        this.importCsvMessages.push({
-          message: err,
-          type: 'error'
-        })
-      }
-
-      clearTimeout(parseCsvLoadingIndicator)
-      clearTimeout(importLoadingIndicator)
-      this.newDb.deleteProgressCounter(progressCounterId)
-      this.disableDialog = false
+        .then(this.finish)
     },
 
     async checkFile (file) {
-      this.state = 'drop'
-      if (csvMimeTypes.includes(file.type)) {
-        this.file = file
-        this.header = true
-        this.quoteChar = '"'
-        this.escapeChar = '"'
-        this.delimiter = ''
-        return Promise.all([this.previewCSV(), this.animationPromise])
-          .then(() => {
-            this.$modal.show('parse')
-          })
-      } else {
+      this.state = 'dropping'
+      this.newDb = database.getNewDatabase()
+
+      if (fIo.isDatabase(file)) {
         this.loadDb(file)
+      } else {
+        this.file = file
+        await this.$nextTick()
+        const csvImport = this.$refs.addCsv
+        csvImport.reset()
+        return Promise.all([csvImport.previewCsv(), this.animationPromise])
+          .then(csvImport.open)
       }
     },
     browse () {
-      fu.getFileFromUser('.db,.sqlite,.sqlite3,.csv')
+      fIo.getFileFromUser('.db,.sqlite,.sqlite3,.csv')
         .then(this.checkFile)
     },
 
@@ -431,6 +172,7 @@ export default {
   align-items: center;
   justify-content: center;
   height: 100%;
+  cursor: pointer;
 }
 
 #img-container {
@@ -502,42 +244,16 @@ export default {
 #file-img.fly {
   animation: fly ease-in-out 1s 1 normal;
   transform-origin: center center;
-  top: 183px;
-  left: 225px;
-  transition: top 1s ease-in-out, left 1s ease-in-out;
 }
 @keyframes fly {
-  100% { transform: rotate(360deg) scale(0.5); }
-}
-/* Parse CSV dialog */
-.chars {
-  display: flex;
-  align-items: flex-end;
-  margin-bottom: 20px;
-}
-.char-input {
-  margin-right: 44px;
-}
-.preview-table {
-  margin-top: 32px;
+  100% {
+    transform: rotate(360deg) scale(0.5);
+    top: 183px;
+    left: 225px;
+  }
 }
 
-.import-csv-errors {
-  height: 160px;
-  margin-top: 32px;
-}
-.no-data {
-  margin-top: 32px;
-  background-color: white;
-  border-radius: 5px;
-  position: relative;
-  border: 1px solid var(--color-border-light);
-  box-sizing: border-box;
-  height: 160px;
-  font-size: 13px;
-  color: var(--color-text-base);
-  display: flex;
-  justify-content: center;
-  align-items: center;
+#file-img.hidden {
+  display: none;
 }
 </style>

src/components/LoadingIndicator.vue

@@ -1,17 +1,18 @@
 <template>
-  <svg :class="['svg-container', animationClass ]" height="20" width="20" viewBox="0 0 20 20">
+  <svg :class="animationClass" :height="size" :width="size" :viewBox="`0 0 ${size} ${size}`">
     <circle
       class="loader-svg bg"
-      cx="10"
-      cy="10"
-      r="8"
+      :style="{ strokeWidth }"
+      :cx="size / 2"
+      :cy="size / 2"
+      :r="radius"
     />
     <circle
       class="loader-svg front"
-      :style="{ strokeDasharray: circleProgress }"
-      cx="10"
-      cy="10"
-      r="8"
+      :style="{ strokeDasharray: circleProgress, strokeDashoffset: offset, strokeWidth }"
+      :cx="size / 2"
+      :cy="size / 2"
+      :r="radius"
     />
   </svg>
 </template>
@@ -19,15 +20,35 @@
 <script>
 export default {
   name: 'LoadingIndicator',
-  props: ['progress'],
+  props: {
+    progress: {
+      type: Number,
+      required: false
+    },
+    size: {
+      type: Number,
+      required: false,
+      default: 20
+    }
+  },
   computed: {
     circleProgress () {
-      const dash = (50.24 * this.progress) / 100
-      const space = 50.24 - dash
+      const circle = this.radius * 3.14 * 2
+      const dash = this.progress ? (circle * this.progress) / 100 : circle * 1 / 3
+      const space = circle - dash
       return `${dash}px, ${space}px`
     },
     animationClass () {
       return this.progress === undefined ? 'loading' : 'progress'
+    },
+    radius () {
+      return this.size / 2 - this.strokeWidth
+    },
+    offset () {
+      return this.radius * 3.14 / 2
+    },
+    strokeWidth () {
+      return this.size / 10
     }
   }
 }
@@ -38,7 +59,6 @@ export default {
   position: absolute;
   left: 0; right: 0; top: 0; bottom: 0;
   fill: none;
-  stroke-width: 2px;
   stroke-linecap: round;
   stroke: var(--color-accent);
 }
@@ -48,27 +68,30 @@ export default {
 }
 
 .loading .loader-svg.front {
-  stroke-dasharray: 40.24px;
+  will-change: transform;
   animation: fill-animation-loading 1s cubic-bezier(1,1,1,1) 0s infinite;
+  transform-origin: center;
 }
 
+/*
+  We can't change anything in loading animation except transform, opacity and filter. Because in
+  our case the Main Thread can be busy and animation will be frozen (e. g. getting a result set
+  from the web-worker after query execution).
+  But transform, opacity and filter trigger changes only in the Composite Layer stage in rendering
+  waterfall. Hence they can be processed only with Compositor Thread while the Main Thread
+  processes something else.
+  https://www.viget.com/articles/animation-performance-101-browser-under-the-hood/
+*/
 @keyframes fill-animation-loading {
   0% {
-    stroke-dasharray: 10px 40.24px;
-    stroke-dashoffset: 0;
-  }
-  50% {
-    stroke-dasharray: 25.12px;
-    stroke-dashoffset: 25.12px;
+    transform: rotate(0deg);
   }
   100% {
-    stroke-dasharray: 10px 40.24px;
-    stroke-dashoffset: 50.24px;
+    transform: rotate(360deg);
   }
 }
 
 .progress .loader-svg.front {
-  stroke-dashoffset: 12.56;
   transition: stroke-dasharray 0.2s;
 }
 

src/components/Logs.vue

@@ -63,14 +63,16 @@ export default {
   border-radius: 5px;
   border: 1px solid var(--color-border-light);
   box-sizing: border-box;
-  overflow-y: scroll;
+  overflow-y: auto;
+  color: var(--color-text-base);
 }
 .msg {
-  padding: 16px 7px;
+  padding: 12px 7px;
   border-bottom: 1px solid var(--color-border-light);
   display: flex;
   align-items: flex-start;
   font-family: monospace;
+  font-size: 13px;
 }
 
 .msg:last-child {

src/components/Splitpanes/index.vue

@@ -65,7 +65,7 @@
 </template>
 
 <script>
-import splitter from '@/splitter'
+import splitter from './splitter'
 
 export default {
   name: 'Splitpanes',

src/components/SqlTable/index.vue

@@ -41,6 +41,7 @@
       <div class="table-footer-count">
         {{ dataSet.values.length}} {{dataSet.values.length === 1 ? 'row' : 'rows'}} retrieved
         <span v-if="preview">for preview</span>
+        <span v-if="time">in {{ time }}</span>
       </div>
       <pager v-show="pageCount > 1" :page-count="pageCount" v-model="currentPage" />
     </div>
@@ -48,12 +49,12 @@
 </template>
 
 <script>
-import Pager from '@/components/Pager'
+import Pager from './Pager'
 
 export default {
   name: 'SqlTable',
   components: { Pager },
-  props: ['dataSet', 'height', 'preview'],
+  props: ['dataSet', 'time', 'height', 'preview'],
   data () {
     return {
       header: null,

src/components/TextField.vue

@@ -87,4 +87,7 @@ input.error {
   margin-top: 2px;
   position: absolute;
 }
+.text-field-error:first-letter {
+  text-transform: uppercase;
+}
 </style>

src/components/svg/addTable.vue

@@ -0,0 +1,61 @@
+<template>
+  <span>
+    <svg
+      class="icon"
+      width="18"
+      height="18"
+      viewBox="0 0 18 18"
+      fill="none"
+      @click.stop="$emit('click')"
+      @mouseover="showTooltip"
+      @mouseout="hideTooltip"
+    >
+      <g clip-path="url(#clip0)">
+        <path
+          fill-rule="evenodd"
+          clip-rule="evenodd"
+          d="
+            M13.6573 1.5H2.59985C1.77485 1.5 1.09985 2.175 1.09985 3V13.6649C1.09985 14.4899
+            1.77485 15.1649 2.59985
+            15.1649H9.84V13.6649H8.87866V9.08244H13.6573V9.83777H15.1573V3C15.1573
+            2.17 14.4873 1.5 13.6573 1.5ZM13.6573
+            7.58244V3H8.87866V7.58244H13.6573ZM7.37866 3H2.59985V7.58244H7.37866V3ZM2.59985
+            9.08244V13.6649H7.37866V9.08244H2.59985ZM13.1702
+            10.8434H15.6702V13.1717H18.0001V15.6717H15.6702V18H13.1702V15.6717H10.8401V13.1717H13.1702V10.8434Z
+          "
+          fill="#A2B1C6"
+        />
+      </g>
+      <defs>
+        <clipPath id="clip0">
+          <rect width="18" height="18" fill="white"/>
+        </clipPath>
+      </defs>
+    </svg>
+    <span class="icon-tooltip" :style="tooltipStyle">
+      Add new table from CSV
+    </span>
+  </span>
+</template>
+
+<script>
+import tooltipMixin from '@/tooltipMixin'
+
+export default {
+  name: 'AddTableIcon',
+  mixins: [tooltipMixin],
+  props: ['tooltip']
+}
+</script>
+
+<style scoped>
+.icon {
+  display: block;
+  margin: 0;
+  cursor: pointer;
+}
+
+.icon:hover path {
+  fill: var(--color-accent);
+}
+</style>

src/components/svg/changeDb.vue

@@ -16,13 +16,13 @@
     />
   </svg>
   <span class="icon-tooltip" :style="tooltipStyle">
-    Change database
+    Load another database or CSV
   </span>
 </div>
 </template>
 
 <script>
-import tooltipMixin from '@/mixins/tooltips'
+import tooltipMixin from '@/tooltipMixin'
 
 export default {
   name: 'changeDbIcon',

src/components/svg/export.vue

@@ -23,7 +23,7 @@
 </template>
 
 <script>
-import tooltipMixin from '@/mixins/tooltips'
+import tooltipMixin from '@/tooltipMixin'
 
 export default {
   name: 'ExportIcon',

src/components/svg/hint.vue

@@ -20,7 +20,7 @@
 </template>
 
 <script>
-import tooltipMixin from '@/mixins/tooltips'
+import tooltipMixin from '@/tooltipMixin'
 
 export default {
   name: 'HintIcon',

src/db.utils.js

@@ -1,44 +0,0 @@
-export default {
-  * generateChunks (arr, size) {
-    const count = Math.ceil(arr.length / size)
-
-    for (let i = 0; i <= count - 1; i++) {
-      const start = size * i
-      const end = start + size
-      yield arr.slice(start, end)
-    }
-  },
-
-  getInsertStmt (columns) {
-    const colList = `"${columns.join('", "')}"`
-    const params = columns.map(() => '?').join(', ')
-    return `INSERT INTO csv_import (${colList}) VALUES (${params});`
-  },
-
-  getCreateStatement (columns, values) {
-    let result = 'CREATE table csv_import('
-    columns.forEach((col, index) => {
-    // Get the first row of values to determine types
-      const value = values[0][index]
-      let type = ''
-      switch (typeof value) {
-        case 'number': {
-          type = 'REAL'
-          break
-        }
-        case 'boolean': {
-          type = 'INTEGER'
-          break
-        }
-        case 'string': {
-          type = 'TEXT'
-          break
-        }
-        default: type = 'TEXT'
-      }
-      result += `"${col}" ${type}, `
-    })
-    result = result.replace(/,\s$/, ');')
-    return result
-  }
-}

src/lib/database/_sql.js

@@ -1,5 +1,5 @@
 import initSqlJs from 'sql.js/dist/sql-wasm.js'
-import dbUtils from '@/db.utils'
+import dbUtils from './_statements'
 
 let SQL = null
 const sqlModuleReady = initSqlJs().then(sqlModule => { SQL = sqlModule })
@@ -39,13 +39,15 @@ export default class Sql {
     return this.db.exec(sql, params)
   }
 
-  import (columns, values, progressCounterId, progressCallback, chunkSize = 1500) {
-    this.createDb()
-    this.db.exec(dbUtils.getCreateStatement(columns, values))
+  import (tabName, columns, values, progressCounterId, progressCallback, chunkSize = 1500) {
+    if (this.db === null) {
+      this.createDb()
+    }
+    this.db.exec(dbUtils.getCreateStatement(tabName, columns, values))
     const chunks = dbUtils.generateChunks(values, chunkSize)
     const chunksAmount = Math.ceil(values.length / chunkSize)
     let count = 0
-    const insertStr = dbUtils.getInsertStmt(columns)
+    const insertStr = dbUtils.getInsertStmt(tabName, columns)
     const insertStmt = this.db.prepare(insertStr)
 
     progressCallback({ progress: 0, id: progressCounterId })

src/lib/database/_statements.js

@@ -0,0 +1,90 @@
+import sqliteParser from 'sqlite-parser'
+
+export default {
+  * generateChunks (arr, size) {
+    const count = Math.ceil(arr.length / size)
+
+    for (let i = 0; i <= count - 1; i++) {
+      const start = size * i
+      const end = start + size
+      yield arr.slice(start, end)
+    }
+  },
+
+  getInsertStmt (tabName, columns) {
+    const colList = `"${columns.join('", "')}"`
+    const params = columns.map(() => '?').join(', ')
+    return `INSERT INTO "${tabName}" (${colList}) VALUES (${params});`
+  },
+
+  getCreateStatement (tabName, columns, values) {
+    let result = `CREATE table "${tabName}"(`
+    columns.forEach((col, index) => {
+    // Get the first row of values to determine types
+      const value = values[0][index]
+      let type = ''
+      switch (typeof value) {
+        case 'number': {
+          type = 'REAL'
+          break
+        }
+        case 'boolean': {
+          type = 'INTEGER'
+          break
+        }
+        case 'string': {
+          type = 'TEXT'
+          break
+        }
+        default: type = 'TEXT'
+      }
+      result += `"${col}" ${type}, `
+    })
+    result = result.replace(/,\s$/, ');')
+    return result
+  },
+
+  getAst (sql) {
+    // There is a bug is sqlite-parser
+    // It throws an error if tokenizer has an arguments:
+    // https://github.com/codeschool/sqlite-parser/issues/59
+    const fixedSql = sql
+      .replace(/(tokenize=[^,]+)"tokenchars=.+?"/, '$1')
+      .replace(/(tokenize=[^,]+)"remove_diacritics=.+?"/, '$1')
+      .replace(/(tokenize=[^,]+)"separators=.+?"/, '$1')
+      .replace(/tokenize=.+?(,|\))/, 'tokenize=unicode61$1')
+
+    return sqliteParser(fixedSql)
+  },
+
+  /*
+   * Return an array of columns with name and type. E.g.:
+   * [
+   *   { name: 'id',    type: 'INTEGER' },
+   *   { name: 'title', type: 'NVARCHAR(30)' },
+   * ]
+  */
+  getColumns (sql) {
+    const columns = []
+    const ast = this.getAst(sql)
+
+    const columnDefinition = ast.statement[0].format === 'table'
+      ? ast.statement[0].definition
+      : ast.statement[0].result.args.expression // virtual table
+
+    columnDefinition.forEach(item => {
+      if (item.variant === 'column' && ['identifier', 'definition'].includes(item.type)) {
+        let type = item.datatype ? item.datatype.variant : 'N/A'
+        if (item.datatype && item.datatype.args) {
+          type = type + '(' + item.datatype.args.expression[0].value
+          if (item.datatype.args.expression.length === 2) {
+            type = type + ', ' + item.datatype.args.expression[1].value
+          }
+          type = type + ')'
+        }
+        columns.push({ name: item.name, type: type })
+      }
+    })
+    return columns
+  }
+}

src/lib/database/_worker.js

@@ -1,5 +1,5 @@
 import registerPromiseWorker from 'promise-worker/register'
-import Sql from '@/sql'
+import Sql from './_sql'
 
 const sqlReady = Sql.build()
 
@@ -8,10 +8,18 @@ function processMsg (sql) {
   switch (data && data.action) {
     case 'open':
       return sql.open(data.buffer)
+    case 'reopen':
+      return sql.open(sql.export())
     case 'exec':
       return sql.exec(data.sql, data.params)
     case 'import':
-      return sql.import(data.columns, data.values, data.progressCounterId, postMessage)
+      return sql.import(
+        data.tabName,
+        data.columns,
+        data.values,
+        data.progressCounterId,
+        postMessage
+      )
     case 'export':
       return sql.export()
     case 'close':

src/lib/database/index.js

@@ -1,8 +1,8 @@
-import sqliteParser from 'sqlite-parser'
-import fu from '@/file.utils'
+import stms from './_statements'
+import fu from '@/lib/utils/fileIo'
 // We can import workers like so because of worker-loader:
 // https://webpack.js.org/loaders/worker-loader/
-import Worker from '@/db.worker.js'
+import Worker from './_worker.js'
 
 // Use promise-worker in order to turn worker into the promise based one:
 // https://github.com/nolanlawson/promise-worker
@@ -20,6 +20,8 @@ export default {
 let progressCounterIds = 0
 class Database {
   constructor (worker) {
+    this.dbName = null
+    this.schema = null
     this.worker = worker
     this.pw = new PromiseWorker(worker)
 
@@ -50,33 +52,35 @@ class Database {
     delete this.importProgresses[id]
   }
 
-  async createDb (name, data, progressCounterId) {
+  async addTableFromCsv (tabName, data, progressCounterId) {
     const result = await this.pw.postMessage({
       action: 'import',
       columns: data.columns,
       values: data.values,
-      progressCounterId
+      progressCounterId,
+      tabName
     })
 
     if (result.error) {
       throw new Error(result.error)
     }
-
-    return await this.getSchema(name)
+    this.dbName = this.dbName || 'database'
+    this.refreshSchema()
   }
 
   async loadDb (file) {
-    const fileContent = await fu.readAsArrayBuffer(file)
+    const fileContent = file ? await fu.readAsArrayBuffer(file) : null
     const res = await this.pw.postMessage({ action: 'open', buffer: fileContent })
 
     if (res.error) {
       throw new Error(res.error)
     }
 
-    return this.getSchema(file.name.replace(/\.[^.]+$/, ''))
+    this.dbName = file ? fu.getFileName(file) : 'database'
+    this.refreshSchema()
   }
 
-  async getSchema (name) {
+  async refreshSchema () {
     const getSchemaSql = `
       SELECT name, sql
       FROM sqlite_master
@@ -85,21 +89,21 @@ class Database {
     const result = await this.execute(getSchemaSql)
     // Parse DDL statements to get column names and types
     const parsedSchema = []
-    result.values.forEach(item => {
-      parsedSchema.push({
-        name: item[0],
-        columns: getColumns(item[1])
+    if (result && result.values) {
+      result.values.forEach(item => {
+        parsedSchema.push({
+          name: item[0],
+          columns: stms.getColumns(item[1])
+        })
       })
-    })
-
-    // Return db name and schema
-    return {
-      dbName: name,
-      schema: parsedSchema
     }
+
+    // Refresh schema
+    this.schema = parsedSchema
   }
 
   async execute (commands) {
+    await this.pw.postMessage({ action: 'reopen' })
     const results = await this.pw.postMessage({ action: 'exec', sql: commands })
 
     if (results.error) {
@@ -117,48 +121,27 @@ class Database {
     }
     fu.exportToFile(data, fileName)
   }
-}
 
-function getAst (sql) {
-  // There is a bug is sqlite-parser
-  // It throws an error if tokenizer has an arguments:
-  // https://github.com/codeschool/sqlite-parser/issues/59
-  const fixedSql = sql
-    .replace(/(?<=tokenize=.+)"tokenchars=.+"/, '')
-    .replace(/(?<=tokenize=.+)"remove_diacritics=.+"/, '')
-    .replace(/(?<=tokenize=.+)"separators=.+"/, '')
-    .replace(/tokenize=.+(?=(,|\)))/, 'tokenize=unicode61')
-
-  return sqliteParser(fixedSql)
-}
-
-/*
- * Return an array of columns with name and type. E.g.:
- * [
- *   { name: 'id',    type: 'INTEGER' },
- *   { name: 'title', type: 'NVARCHAR(30)' },
- * ]
-*/
-function getColumns (sql) {
-  const columns = []
-  const ast = getAst(sql)
-
-  const columnDefinition = ast.statement[0].format === 'table'
-    ? ast.statement[0].definition
-    : ast.statement[0].result.args.expression // virtual table
-
-  columnDefinition.forEach(item => {
-    if (item.variant === 'column' && ['identifier', 'definition'].includes(item.type)) {
-      let type = item.datatype ? item.datatype.variant : 'N/A'
-      if (item.datatype && item.datatype.args) {
-        type = type + '(' + item.datatype.args.expression[0].value
-        if (item.datatype.args.expression.length === 2) {
-          type = type + ', ' + item.datatype.args.expression[1].value
-        }
-        type = type + ')'
-      }
-      columns.push({ name: item.name, type: type })
+  async validateTableName (name) {
+    if (name.startsWith('sqlite_')) {
+      throw new Error("Table name can't start with sqlite_")
     }
-  })
-  return columns
+
+    if (/[^\w]/.test(name)) {
+      throw new Error('Table name can contain only letters, digits and underscores')
+    }
+
+    if (/^(\d)/.test(name)) {
+      throw new Error("Table name can't start with a digit")
+    }
+
+    await this.execute(`BEGIN; CREATE TABLE "${name}"(id); ROLLBACK;`)
+  }
+
+  sanitizeTableName (tabName) {
+    return tabName
+      .replace(/[^\w]/g, '_') // replace everything that is not letter, digit or _  with _
+      .replace(/^(\d)/, '_$1') // add _ at beginning if starts with digit
+      .replace(/_{2,}/g, '_') // replace multiple _ with one _
+  }
 }

src/lib/storedQueries.js

@@ -1,5 +1,5 @@
 import { nanoid } from 'nanoid'
-import fu from '@/file.utils'
+import fu from '@/lib/utils/fileIo'
 
 export default {
   getStoredQueries () {

src/lib/utils/fileIo.js

@@ -1,4 +1,15 @@
 export default {
+  isDatabase (file) {
+    const dbTypes = ['application/vnd.sqlite3', 'application/x-sqlite3']
+    return file.type
+      ? dbTypes.includes(file.type)
+      : /\.(db|sqlite(3)?)+$/.test(file.name)
+  },
+
+  getFileName (file) {
+    return file.name.replace(/\.[^.]+$/, '')
+  },
+
   exportToFile (str, fileName, type = 'octet/stream') {
     // Create downloader
     const downloader = document.createElement('a')

src/lib/utils/time.js

@@ -0,0 +1,15 @@
+export default {
+  getPeriod (start, end) {
+    const diff = end.getTime() - start.getTime()
+    const seconds = diff / 1000
+    return seconds.toFixed(3) + 's'
+  },
+
+  debounce (func, ms) {
+    let timeout
+    return function () {
+      clearTimeout(timeout)
+      timeout = setTimeout(() => func.apply(this, arguments), ms)
+    }
+  }
+}

src/main.js

@@ -1,7 +1,7 @@
 import Vue from 'vue'
-import App from './App.vue'
-import router from './router'
-import store from './store'
+import App from '@/App.vue'
+import router from '@/router'
+import store from '@/store'
 import { VuePlugin } from 'vuera'
 import VModal from 'vue-js-modal'
 
@@ -13,7 +13,7 @@ import '@/assets/styles/tooltips.css'
 import '@/assets/styles/messages.css'
 
 if (!['localhost', '127.0.0.1'].includes(location.hostname)) {
-  import('../registerServiceWorker') // eslint-disable-line no-unused-expressions
+  import('./registerServiceWorker') // eslint-disable-line no-unused-expressions
 }
 
 Vue.use(VuePlugin)

src/registerServiceWorker.js

@@ -13,7 +13,7 @@ function invokeServiceWorkerUpdateFlow (registration) {
 
 if ('serviceWorker' in navigator) {
   window.addEventListener('load', async () => {
-    const registration = await navigator.serviceWorker.register('/service-worker.js')
+    const registration = await navigator.serviceWorker.register('service-worker.js')
     // ensure the case when the updatefound event was missed is also handled
     // by re-invoking the prompt when there's a waiting Service Worker
     if (registration.waiting) {

src/router.js

@@ -0,0 +1,50 @@
+import Vue from 'vue'
+import VueRouter from 'vue-router'
+import Editor from '@/views/Main/Editor'
+import MyQueries from '@/views/Main/MyQueries'
+import Welcome from '@/views/Welcome'
+import Main from '@/views/Main'
+import store from '@/store'
+import database from '@/lib/database'
+
+Vue.use(VueRouter)
+
+const routes = [
+  {
+    path: '/',
+    name: 'Welcome',
+    component: Welcome
+  },
+  {
+    path: '/',
+    name: 'Main',
+    component: Main,
+    children: [
+      {
+        path: '/editor',
+        name: 'Editor',
+        component: Editor
+      },
+      {
+        path: '/my-queries',
+        name: 'MyQueries',
+        component: MyQueries
+      }
+    ]
+  }
+]
+
+const router = new VueRouter({
+  routes
+})
+
+router.beforeEach(async (to, from, next) => {
+  if (!store.state.db) {
+    const newDb = database.getNewDatabase()
+    await newDb.loadDb()
+    store.commit('setDb', newDb)
+  }
+  next()
+})
+
+export default router

src/router/index.js

@@ -1,39 +0,0 @@
-import Vue from 'vue'
-import VueRouter from 'vue-router'
-import Editor from '@/views/Editor'
-import MyQueries from '@/views/MyQueries'
-import Home from '@/views/Home'
-import MainView from '@/views/MainView'
-
-Vue.use(VueRouter)
-
-const routes = [
-  {
-    path: '/',
-    name: 'Welcome',
-    component: Home
-  },
-  {
-    path: '/',
-    name: 'MainView',
-    component: MainView,
-    children: [
-      {
-        path: '/editor',
-        name: 'Editor',
-        component: Editor
-      },
-      {
-        path: '/my-queries',
-        name: 'MyQueries',
-        component: MyQueries
-      }
-    ]
-  }
-]
-
-const router = new VueRouter({
-  routes
-})
-
-export default router

src/store/actions.js

@@ -0,0 +1,30 @@
+import { nanoid } from 'nanoid'
+
+export default {
+  async addTab ({ state }, data) {
+    const tab = data ? JSON.parse(JSON.stringify(data)) : {}
+    // If no data then create a new blank one...
+    // No data.id means to create new tab, but not blank,
+    // e.g. with 'select * from csv_import' query after csv import
+    if (!data || !data.id) {
+      tab.id = nanoid()
+      tab.name = null
+      tab.tempName = state.untitledLastIndex
+        ? `Untitled ${state.untitledLastIndex}`
+        : 'Untitled'
+      tab.isUnsaved = true
+    } else {
+      tab.isUnsaved = false
+    }
+
+    // add new tab only if was not already opened
+    if (!state.tabs.some(openedTab => openedTab.id === tab.id)) {
+      state.tabs.push(tab)
+      if (!tab.name) {
+        state.untitledLastIndex += 1
+      }
+    }
+
+    return tab.id
+  }
+}

src/store/index.js

@@ -1,112 +1,11 @@
 import Vue from 'vue'
 import Vuex from 'vuex'
-import { nanoid } from 'nanoid'
+import state from '@/store/state'
+import mutations from '@/store/mutations'
+import actions from '@/store/actions'
 
 Vue.use(Vuex)
 
-export const state = {
-  schema: null,
-  dbFile: null,
-  dbName: null,
-  tabs: [],
-  currentTab: null,
-  currentTabId: null,
-  untitledLastIndex: 0,
-  predefinedQueries: [],
-  db: null
-}
-
-export const mutations = {
-  setDb (state, db) {
-    if (state.db) {
-      state.db.shutDown()
-    }
-    state.db = db
-  },
-  saveSchema (state, { dbName, schema }) {
-    state.dbName = dbName
-    state.schema = schema
-  },
-
-  updateTab (state, { index, name, id, query, chart, isUnsaved }) {
-    const tab = state.tabs[index]
-    const oldId = tab.id
-
-    if (id && state.currentTabId === oldId) {
-      state.currentTabId = id
-    }
-
-    if (id) { tab.id = id }
-    if (name) { tab.name = name }
-    if (query) { tab.query = query }
-    if (chart) { tab.chart = chart }
-    if (isUnsaved !== undefined) { tab.isUnsaved = isUnsaved }
-    if (!isUnsaved) {
-      // Saved query is not predefined
-      delete tab.isPredefined
-    }
-
-    Vue.set(state.tabs, index, tab)
-  },
-  deleteTab (state, index) {
-    // If closing tab is the current opened
-    if (state.tabs[index].id === state.currentTabId) {
-      if (index < state.tabs.length - 1) {
-        state.currentTabId = state.tabs[index + 1].id
-      } else if (index > 0) {
-        state.currentTabId = state.tabs[index - 1].id
-      } else {
-        state.currentTabId = null
-        state.currentTab = null
-        state.untitledLastIndex = 0
-      }
-    }
-    state.tabs.splice(index, 1)
-  },
-  setCurrentTabId (state, id) {
-    state.currentTabId = id
-  },
-  setCurrentTab (state, tab) {
-    state.currentTab = tab
-  },
-  updatePredefinedQueries (state, queries) {
-    if (Array.isArray(queries)) {
-      state.predefinedQueries = queries
-    } else {
-      state.predefinedQueries = [queries]
-    }
-  }
-}
-
-export const actions = {
-  async addTab ({ state }, data) {
-    const tab = data ? JSON.parse(JSON.stringify(data)) : {}
-    // If no data then create a new blank one...
-    // No data.id means to create new tab, but not blank,
-    // e.g. with 'select * from csv_import' query after csv import
-    if (!data || !data.id) {
-      tab.id = nanoid()
-      tab.name = null
-      tab.tempName = state.untitledLastIndex
-        ? `Untitled ${state.untitledLastIndex}`
-        : 'Untitled'
-      tab.isUnsaved = true
-    } else {
-      tab.isUnsaved = false
-    }
-
-    // add new tab only if was not already opened
-    if (!state.tabs.some(openedTab => openedTab.id === tab.id)) {
-      state.tabs.push(tab)
-      if (!tab.name) {
-        state.untitledLastIndex += 1
-      }
-    }
-
-    return tab.id
-  }
-}
-
 export default new Vuex.Store({
   state,
   mutations,

src/store/mutations.js

@@ -0,0 +1,59 @@
+import Vue from 'vue'
+
+export default {
+  setDb (state, db) {
+    if (state.db) {
+      state.db.shutDown()
+    }
+    state.db = db
+  },
+
+  updateTab (state, { index, name, id, query, chart, isUnsaved }) {
+    const tab = state.tabs[index]
+    const oldId = tab.id
+
+    if (id && state.currentTabId === oldId) {
+      state.currentTabId = id
+    }
+
+    if (id) { tab.id = id }
+    if (name) { tab.name = name }
+    if (query) { tab.query = query }
+    if (chart) { tab.chart = chart }
+    if (isUnsaved !== undefined) { tab.isUnsaved = isUnsaved }
+    if (!isUnsaved) {
+      // Saved query is not predefined
+      delete tab.isPredefined
+    }
+
+    Vue.set(state.tabs, index, tab)
+  },
+  deleteTab (state, index) {
+    // If closing tab is the current opened
+    if (state.tabs[index].id === state.currentTabId) {
+      if (index < state.tabs.length - 1) {
+        state.currentTabId = state.tabs[index + 1].id
+      } else if (index > 0) {
+        state.currentTabId = state.tabs[index - 1].id
+      } else {
+        state.currentTabId = null
+        state.currentTab = null
+        state.untitledLastIndex = 0
+      }
+    }
+    state.tabs.splice(index, 1)
+  },
+  setCurrentTabId (state, id) {
+    state.currentTabId = id
+  },
+  setCurrentTab (state, tab) {
+    state.currentTab = tab
+  },
+  updatePredefinedQueries (state, queries) {
+    if (Array.isArray(queries)) {
+      state.predefinedQueries = queries
+    } else {
+      state.predefinedQueries = [queries]
+    }
+  }
+}

src/store/state.js

@@ -0,0 +1,8 @@
+export default {
+  tabs: [],
+  currentTab: null,
+  currentTabId: null,
+  untitledLastIndex: 0,
+  predefinedQueries: [],
+  db: null
+}

src/time.js

@@ -1,36 +0,0 @@
-export default {
-  getPeriod (start, end) {
-    let diff = end.getTime() - start.getTime()
-    let result = ''
-
-    const days = Math.floor(diff / (1000 * 60 * 60 * 24))
-    diff -= days * (1000 * 60 * 60 * 24)
-    if (days) {
-      result += days + ' d '
-    }
-
-    const hours = Math.floor(diff / (1000 * 60 * 60))
-    diff -= hours * (1000 * 60 * 60)
-    if (hours) {
-      result += hours + ' h '
-    }
-
-    const mins = Math.floor(diff / (1000 * 60))
-    diff -= mins * (1000 * 60)
-    if (mins) {
-      result += mins + ' m '
-    }
-
-    const seconds = Math.floor(diff / (1000))
-    diff -= seconds * (1000)
-    if (seconds) {
-      result += seconds + ' s '
-    }
-
-    if (diff) {
-      result += diff + ' ms '
-    }
-
-    return result.replace(/\s$/, '')
-  }
-}

src/views/Editor.vue

@@ -1,74 +0,0 @@
-<template>
-  <div>
-    <splitpanes
-      class="schema-tabs-splitter"
-      :before="{ size: 20, max: 30 }"
-      :after="{ size: 80, max: 100 }"
-    >
-      <template #left-pane>
-        <schema v-if="$store.state.schema"/>
-        <div v-else id="empty-schema-container">
-          <div class="warning">
-            Database is not loaded. Queries can’t be run without database.
-          </div>
-          <db-uploader id="db-uploader" width="100%"/>
-        </div>
-      </template>
-      <template #right-pane>
-        <tabs />
-      </template>
-    </splitpanes>
-  </div>
-</template>
-
-<script>
-import Splitpanes from '@/components/Splitpanes'
-import Schema from '@/components/Schema'
-import Tabs from '@/components/Tabs'
-import DbUploader from '@/components/DbUploader'
-
-export default {
-  name: 'Editor',
-  components: {
-    Schema,
-    Splitpanes,
-    Tabs,
-    DbUploader
-  }
-}
-</script>
-
-<style scoped>
-.schema-tabs-splitter {
-  height: 100%;
-  background-color: var(--color-white);
-}
-#empty-schema-container {
-  display: flex;
-  flex-direction: column;
-  align-items: center;
-  min-width: 200px;
-  height: 100%;
-}
-
-#db-uploader {
-  flex-grow: 1;
-  padding: 24px;
-  width: 100%;
-  box-sizing: border-box;
-}
-
-.warning {
-  padding: 12px 24px;
-  width: 100%;
-  box-sizing: border-box;
-}
-
->>>.drop-area {
-  padding: 0 15px;
-}
-
->>>.drop-area .text {
-  max-width: 200px;
-}
-</style>

src/views/Main/AppDiagnosticInfo.vue

@@ -0,0 +1,90 @@
+<template>
+  <div id="app-info-container">
+    <img
+      id="app-info-icon"
+      :src="require('@/assets/images/info.svg')"
+      @click="$modal.show('app-info')"
+    />
+    <modal name="app-info" classes="dialog" height="auto" width="400px">
+      <div class="dialog-header">
+        App info
+        <close-icon @click="$modal.hide('app-info')"/>
+      </div>
+      <div class="dialog-body">
+        <div v-for="(item, index) in info" :key="index" class="info-item">
+          {{item.name}}
+          <div class="divider"/>
+          <div class="options">
+            <div v-for="(opt, index) in item.info" :key="index">
+              {{opt}}
+            </div>
+          </div>
+        </div>
+      </div>
+    </modal>
+  </div>
+</template>
+
+<script>
+import CloseIcon from '@/components/svg/close'
+
+export default {
+  name: 'AppDiagnosticInfo',
+  components: { CloseIcon },
+  data () {
+    return {
+      info: [
+        {
+          name: 'sqliteviz version',
+          info: [require('../../../package.json').version]
+        }
+      ]
+    }
+  },
+
+  async created () {
+    const state = this.$store.state
+    let result = await state.db.execute('select sqlite_version()')
+    this.info.push({
+      name: 'SQLite version',
+      info: result.values[0]
+    })
+
+    result = await state.db.execute('PRAGMA compile_options')
+    this.info.push({
+      name: 'SQLite compile options',
+      info: result.values.map(row => row[0])
+    })
+  }
+}
+</script>
+
+<style scoped>
+#app-info-icon {
+  cursor: pointer;
+}
+#app-info-container {
+  display: flex;
+  justify-content: center;
+  margin-left: 32px;
+}
+.divider {
+  height: 1px;
+  background-color: var(--color-border);
+  margin: 4px 0;
+}
+.options {
+  font-family: monospace;
+  font-size: 13px;
+  margin-left: 8px;
+  overflow: auto;
+  max-height: 170px;
+}
+.info-item {
+  margin-bottom: 32px;
+   font-size: 14px;
+}
+.info-item:last-child {
+  margin-bottom: 0;
+}
+</style>

src/views/Main/Editor/Schema/index.vue

@@ -5,11 +5,12 @@
     </div>
     <div id="db">
       <div @click="schemaVisible = !schemaVisible" class="db-name">
-        <tree-chevron :expanded="schemaVisible"/>
+        <tree-chevron v-show="schema.length > 0" :expanded="schemaVisible"/>
         {{ dbName }}
       </div>
       <db-uploader id="db-edit" type="small" />
       <export-icon tooltip="Export database" @click="exportToFile"/>
+      <add-table-icon @click="addCsv"/>
     </div>
     <div v-show="schemaVisible" class="schema">
       <table-description
@@ -19,15 +20,26 @@
         :columns="table.columns"
       />
     </div>
+
+    <!--Parse csv dialog  -->
+    <csv-import
+      ref="addCsv"
+      :file="file"
+      :db="$store.state.db"
+      dialog-name="addCsv"
+    />
   </div>
 </template>
 
 <script>
-import TableDescription from '@/components/TableDescription'
+import fIo from '@/lib/utils/fileIo'
+import TableDescription from './TableDescription'
 import TextField from '@/components/TextField'
 import TreeChevron from '@/components/svg/treeChevron'
 import DbUploader from '@/components/DbUploader'
 import ExportIcon from '@/components/svg/export'
+import AddTableIcon from '@/components/svg/addTable'
+import CsvImport from '@/components/CsvImport'
 
 export default {
   name: 'Schema',
@@ -36,33 +48,44 @@ export default {
     TextField,
     TreeChevron,
     DbUploader,
-    ExportIcon
+    ExportIcon,
+    AddTableIcon,
+    CsvImport
   },
   data () {
     return {
       schemaVisible: true,
-      filter: null
+      filter: null,
+      file: null
     }
   },
   computed: {
     schema () {
-      if (!this.$store.state.schema) {
+      if (!this.$store.state.db.schema) {
         return []
       }
 
       return !this.filter
-        ? this.$store.state.schema
-        : this.$store.state.schema.filter(
+        ? this.$store.state.db.schema
+        : this.$store.state.db.schema.filter(
           table => table.name.toUpperCase().indexOf(this.filter.toUpperCase()) !== -1
         )
     },
     dbName () {
-      return this.$store.state.dbName
+      return this.$store.state.db.dbName
     }
   },
   methods: {
     exportToFile () {
       this.$store.state.db.export(`${this.dbName}.sqlite`)
+    },
+    async addCsv () {
+      this.file = await fIo.getFileFromUser('.csv')
+      await this.$nextTick()
+      const csvImport = this.$refs.addCsv
+      csvImport.reset()
+      await csvImport.previewCsv()
+      csvImport.open()
     }
   }
 }
@@ -86,7 +109,7 @@ export default {
   width: 100%;
   height: 100px;
   box-sizing: border-box;
-  background-image: linear-gradient(white 73%, transparent);;
+  background-image: linear-gradient(white 73%, rgba(255, 255, 255, 0));
   z-index: 2;
 }
 .schema, .db-name {

src/views/Main/Editor/Tabs/Tab/Chart/index.vue

@@ -28,7 +28,7 @@ import plotly from 'plotly.js/dist/plotly'
 import 'react-chart-editor/lib/react-chart-editor.min.css'
 
 import PlotlyEditor from 'react-chart-editor'
-import chart from '@/chart'
+import chartHelper from './chartHelper'
 import dereference from 'react-chart-editor/lib/lib/dereference'
 
 export default {
@@ -49,10 +49,10 @@ export default {
   },
   computed: {
     dataSources () {
-      return chart.getDataSourcesFromSqlResult(this.sqlResult)
+      return chartHelper.getDataSourcesFromSqlResult(this.sqlResult)
     },
     dataSourceOptions () {
-      return chart.getOptionsFromDataSources(this.dataSources)
+      return chartHelper.getOptionsFromDataSources(this.dataSources)
     }
   },
   watch: {
@@ -71,7 +71,7 @@ export default {
       this.$emit('update')
     },
     getChartStateForSave () {
-      return chart.getChartStateForSave(this.state, this.dataSources)
+      return chartHelper.getChartStateForSave(this.state, this.dataSources)
     }
   }
 }

src/views/Main/Editor/Tabs/Tab/SqlEditor/hint.js

@@ -2,7 +2,6 @@ import CM from 'codemirror'
 import 'codemirror/addon/hint/show-hint.js'
 import 'codemirror/addon/hint/sql-hint.js'
 import store from '@/store'
-import { debounce } from 'debounce'
 
 export function getHints (cm, options) {
   const token = cm.getTokenAt(cm.getCursor()).string.toUpperCase()
@@ -18,28 +17,34 @@ export function getHints (cm, options) {
 const hintOptions = {
   get tables () {
     const tables = {}
-    if (store.state.schema) {
-      store.state.schema.forEach(table => {
+    if (store.state.db.schema) {
+      store.state.db.schema.forEach(table => {
         tables[table.name] = table.columns.map(column => column.name)
       })
     }
     return tables
   },
+  get defaultTable () {
+    const schema = store.state.db.schema
+    return schema && schema.length === 1 ? schema[0].name : null
+  },
   completeSingle: false,
   completeOnSingleClick: true,
   alignWithWord: false
 }
 
-export default {
-  show: debounce(function (editor) {
-    // Don't show autocomplete after a space or semicolon or in string literals
-    const token = editor.getTokenAt(editor.getCursor())
-    const ch = token.string.slice(-1)
-    const tokenType = token.type
-    if (tokenType === 'string' || !ch || ch === ' ' || ch === ';') {
-      return
-    }
-
-    CM.showHint(editor, getHints, hintOptions)
-  }, 400)
+export function showHintOnDemand (editor) {
+  CM.showHint(editor, getHints, hintOptions)
+}
+
+export default function showHint (editor) {
+  // Don't show autocomplete after a space or semicolon or in string literals
+  const token = editor.getTokenAt(editor.getCursor())
+  const ch = token.string.slice(-1)
+  const tokenType = token.type
+  if (tokenType === 'string' || !ch || ch === ' ' || ch === ';') {
+    return
+  }
+
+  CM.showHint(editor, getHints, hintOptions)
 }

src/views/Main/Editor/Tabs/Tab/SqlEditor/index.vue

@@ -1,11 +1,12 @@
 <template>
   <div class="codemirror-container">
-    <codemirror v-model="query" :options="cmOptions" @changes="onChange" />
+    <codemirror ref="cm" v-model="query" :options="cmOptions" @changes="onChange" />
   </div>
 </template>
 
 <script>
-import hint from '@/hint'
+import showHint, { showHintOnDemand } from './hint'
+import time from '@/lib/utils/time'
 import { codemirror } from 'vue-codemirror'
 import 'codemirror/lib/codemirror.css'
 import 'codemirror/mode/sql/sql.js'
@@ -27,8 +28,8 @@ export default {
         theme: 'neo',
         lineNumbers: true,
         line: true,
-        autofocus: true,
-        autoRefresh: true
+        autoRefresh: true,
+        extraKeys: { 'Ctrl-Space': showHintOnDemand }
       }
     }
   },
@@ -38,7 +39,10 @@ export default {
     }
   },
   methods: {
-    onChange: hint.show
+    onChange: time.debounce(showHint, 400),
+    focus () {
+      this.$refs.cm.codemirror.focus()
+    }
   }
 }
 </script>

src/views/Main/Editor/Tabs/Tab/index.vue

@@ -8,7 +8,7 @@
     >
       <template #left-pane>
         <div class="query-editor">
-          <sql-editor v-model="query" />
+          <sql-editor ref="sqlEditor" v-model="query" />
         </div>
       </template>
       <template #right-pane>
@@ -21,7 +21,8 @@
             >
               Run your query and get results here
             </div>
-            <div v-show="isGettingResults" class="table-preview result-in-progress">
+            <div v-if="isGettingResults" class="table-preview result-in-progress">
+              <loading-indicator :size="30"/>
               Fetching results...
             </div>
             <div
@@ -30,10 +31,8 @@
             >
               No rows retrieved according to your query
             </div>
-            <div v-show="error" class="table-preview error">
-              {{ error }}
-            </div>
-            <sql-table v-if="result" :data-set="result" :height="tableViewHeight" />
+            <logs v-if="error" :messages="[error]"/>
+            <sql-table v-if="result" :data-set="result" :time="time" :height="tableViewHeight" />
           </div>
           <chart
             :visible="view === 'chart'"
@@ -50,10 +49,13 @@
 
 <script>
 import SqlTable from '@/components/SqlTable'
-import SqlEditor from '@/components/SqlEditor'
 import Splitpanes from '@/components/Splitpanes'
-import ViewSwitcher from '@/components/ViewSwitcher'
-import Chart from '@/components/Chart'
+import LoadingIndicator from '@/components/LoadingIndicator'
+import SqlEditor from './SqlEditor'
+import ViewSwitcher from './ViewSwitcher'
+import Chart from './Chart'
+import Logs from '@/components/Logs'
+import time from '@/lib/utils/time'
 
 export default {
   name: 'Tab',
@@ -63,7 +65,9 @@ export default {
     SqlTable,
     Splitpanes,
     ViewSwitcher,
-    Chart
+    Chart,
+    LoadingIndicator,
+    Logs
   },
   data () {
     return {
@@ -73,7 +77,8 @@ export default {
       tableViewHeight: 0,
       isGettingResults: false,
       error: null,
-      resizeObserver: null
+      resizeObserver: null,
+      time: 0
     }
   },
   computed: {
@@ -81,9 +86,6 @@ export default {
       return this.id === this.$store.state.currentTabId
     }
   },
-  created () {
-    this.$store.commit('setCurrentTab', this)
-  },
   mounted () {
     this.resizeObserver = new ResizeObserver(this.handleResize)
     this.resizeObserver.observe(this.$refs.bottomPane)
@@ -93,9 +95,14 @@ export default {
     this.resizeObserver.unobserve(this.$refs.bottomPane)
   },
   watch: {
-    isActive () {
-      if (this.isActive) {
-        this.$store.commit('setCurrentTab', this)
+    isActive: {
+      immediate: true,
+      async handler () {
+        if (this.isActive) {
+          this.$store.commit('setCurrentTab', this)
+          await this.$nextTick()
+          this.$refs.sqlEditor.focus()
+        }
       }
     },
     query () {
@@ -110,12 +117,16 @@ export default {
       this.error = null
       const state = this.$store.state
       try {
+        const start = new Date()
         this.result = await state.db.execute(this.query + ';')
-        const schema = await state.db.getSchema(state.dbName)
-        this.$store.commit('saveSchema', schema)
+        this.time = time.getPeriod(start, new Date())
       } catch (err) {
-        this.error = err
+        this.error = {
+          type: 'error',
+          message: err
+        }
       }
+      state.db.refreshSchema()
       this.isGettingResults = false
     },
     handleResize () {
@@ -131,12 +142,12 @@ export default {
     calculateTableHeight () {
       const bottomPane = this.$refs.bottomPane
       // 88 - view swittcher height
-      // 42 - table footer width
-      // 30 - desirable space after the table
+      // 34 - table footer width
+      // 12 - desirable space after the table
       // 5 - padding-bottom of rounded table container
-      // 40 - height of table header
-      const freeSpace = bottomPane.offsetHeight - 88 - 42 - 30 - 5 - 40
-      this.tableViewHeight = freeSpace - (freeSpace % 40)
+      // 35 - height of table header
+      const freeSpace = bottomPane.offsetHeight - 88 - 34 - 12 - 5 - 35
+      this.tableViewHeight = freeSpace - (freeSpace % 35)
     }
   }
 }
@@ -183,11 +194,32 @@ export default {
   font-size: 13px;
 }
 
-.table-preview.error {
-  color: var(--color-text-error);
+.result-in-progress {
+  display: flex;
+  flex-direction: column;
+  justify-content: center;
+  align-items: center;
+  will-change: opacity;
+  /*
+    We need to show loader in 1 sec after starting query execution. We can't do that with
+    setTimeout because the main thread can be busy by getting a result set from the web worker.
+    But we can use CSS animation for opacity. Opacity triggers changes only in the Composite Layer
+    stage in rendering waterfall. Hence it can be processed only with Compositor Thread while
+    the Main Thread processes a result set.
+    https://www.viget.com/articles/animation-performance-101-browser-under-the-hood/
+  */
+  animation: show-loader 1s linear 0s 1;
 }
 
-.table-preview.error::first-letter {
-  text-transform: capitalize;
+@keyframes show-loader {
+  0% {
+    opacity: 0;
+  }
+  99% {
+    opacity: 0;
+  }
+  100% {
+    opacity: 1;
+  }
 }
 </style>

src/views/Main/Editor/Tabs/index.vue

@@ -62,7 +62,7 @@
 </template>
 
 <script>
-import Tab from '@/components/Tab'
+import Tab from './Tab'
 import CloseIcon from '@/components/svg/close'
 
 export default {

src/views/Main/Editor/index.vue

@@ -0,0 +1,62 @@
+<template>
+  <div>
+    <splitpanes
+      class="schema-tabs-splitter"
+      :before="{ size: 20, max: 30 }"
+      :after="{ size: 80, max: 100 }"
+    >
+      <template #left-pane>
+        <schema/>
+      </template>
+      <template #right-pane>
+        <tabs />
+      </template>
+    </splitpanes>
+  </div>
+</template>
+
+<script>
+import Splitpanes from '@/components/Splitpanes'
+import Schema from './Schema'
+import Tabs from './Tabs'
+
+export default {
+  name: 'Editor',
+  components: {
+    Schema,
+    Splitpanes,
+    Tabs
+  },
+  async beforeCreate () {
+    const schema = this.$store.state.db.schema
+    if (!schema || schema.length === 0) {
+      const stmt = [
+        '/*',
+        ' * Your database is empty. In order to start building charts',
+        ' * you should create a table and insert data into it.',
+        ' */',
+        'CREATE TABLE house',
+        '(',
+        '  name TEXT,',
+        '  points INTEGER',
+        ');',
+        'INSERT INTO house VALUES',
+        "('Gryffindor', 100),",
+        "('Hufflepuff', 90),",
+        "('Ravenclaw', 95),",
+        "('Slytherin', 80);"
+      ].join('\n')
+
+      const tabId = await this.$store.dispatch('addTab', { query: stmt })
+      this.$store.commit('setCurrentTabId', tabId)
+    }
+  }
+}
+</script>
+
+<style scoped>
+.schema-tabs-splitter {
+  height: 100%;
+  background-color: var(--color-white);
+}
+</style>

src/views/Main/MainMenu.vue

@@ -3,8 +3,9 @@
     <div>
       <router-link to="/editor">Editor</router-link>
       <router-link to="/my-queries">My queries</router-link>
+      <a href="https://github.com/lana-k/sqliteviz/wiki" target="_blank">Help</a>
     </div>
-    <div>
+    <div id="nav-buttons">
       <button
         id="run-btn"
         v-if="currentQuery && $route.path === '/editor'"
@@ -30,6 +31,7 @@
       >
         Create
       </button>
+      <app-diagnostic-info />
     </div>
 
     <!--Save Query dialog  -->
@@ -62,13 +64,15 @@
 <script>
 import TextField from '@/components/TextField'
 import CloseIcon from '@/components/svg/close'
-import storedQueries from '@/storedQueries'
+import storedQueries from '@/lib/storedQueries'
+import AppDiagnosticInfo from './AppDiagnosticInfo'
 
 export default {
   name: 'MainMenu',
   components: {
     TextField,
-    CloseIcon
+    CloseIcon,
+    AppDiagnosticInfo
   },
   data () {
     return {
@@ -96,7 +100,7 @@ export default {
       }
     },
     runDisabled () {
-      return this.currentQuery && (!this.$store.state.schema || !this.currentQuery.query)
+      return this.currentQuery && (!this.$store.state.db || !this.currentQuery.query)
     }
   },
   created () {
@@ -212,7 +216,7 @@ nav {
   top: 0;
   left: 0;
   width: 100vw;
-  padding: 0 52px;
+  padding: 0 16px 0 52px;
   z-index: 999;
 }
 a {
@@ -237,4 +241,8 @@ button {
 #save-note img {
   margin: -3px 6px 0 0;
 }
+
+#nav-buttons {
+  display: flex;
+}
 </style>

src/views/Main/MyQueries/index.vue

@@ -141,16 +141,16 @@
 </template>
 
 <script>
-import RenameIcon from '@/components/svg/rename'
-import CopyIcon from '@/components/svg/copy'
+import RenameIcon from './svg/rename'
+import CopyIcon from './svg/copy'
 import ExportIcon from '@/components/svg/export'
-import DeleteIcon from '@/components/svg/delete'
+import DeleteIcon from './svg/delete'
 import CloseIcon from '@/components/svg/close'
 import TextField from '@/components/TextField'
 import CheckBox from '@/components/CheckBox'
-import tooltipMixin from '@/mixins/tooltips'
-import storedQueries from '@/storedQueries'
-import fu from '@/file.utils'
+import tooltipMixin from '@/tooltipMixin'
+import storedQueries from '@/lib/storedQueries'
+import fu from '@/lib/utils/fileIo'
 
 export default {
   name: 'MyQueries',
@@ -448,6 +448,7 @@ export default {
 }
 
 .rounded-bg {
+  padding-top: 40px;
   margin: 0 auto;
   max-width: 1500px;
   width: 100%;

src/views/Main/MyQueries/svg/copy.vue

@@ -23,7 +23,7 @@
 </template>
 
 <script>
-import tooltipMixin from '@/mixins/tooltips'
+import tooltipMixin from '@/tooltipMixin'
 
 export default {
   name: 'CopyIcon',

src/views/Main/MyQueries/svg/delete.vue

@@ -23,7 +23,7 @@
 </template>
 
 <script>
-import tooltipMixin from '@/mixins/tooltips'
+import tooltipMixin from '@/tooltipMixin'
 
 export default {
   name: 'DeleteIcon',

src/views/Main/MyQueries/svg/rename.vue

@@ -23,7 +23,7 @@
 </template>
 
 <script>
-import tooltipMixin from '@/mixins/tooltips'
+import tooltipMixin from '@/tooltipMixin'
 
 export default {
   name: 'RenameIcon',

src/views/Main/index.vue

@@ -8,11 +8,11 @@
 </template>
 
 <script>
-import MainMenu from '@/components/MainMenu'
+import MainMenu from './MainMenu'
 import '@/assets/styles/scrollbars.css'
 
 export default {
-  name: 'MainView',
+  name: 'Main',
   components: { MainMenu }
 }
 </script>

src/views/Welcome.vue

@@ -4,8 +4,8 @@
     <div id="note">
       Sqliteviz is fully client-side. Your database never leaves your computer.
     </div>
-    <button id ="skip" class="secondary" @click="$router.push('/editor')">
-      Skip database loading
+    <button id="skip" class="secondary" @click="$router.push('/editor')">
+      Create empty database
     </button>
   </div>
 </template>
@@ -14,7 +14,7 @@
 import DbUploader from '@/components/DbUploader'
 
 export default {
-  name: 'Home',
+  name: 'Welcome',
   components: { DbUploader }
 }
 </script>

tests/components/CsvImport/CsvImport.spec.js

@@ -0,0 +1,706 @@
+import { expect } from 'chai'
+import sinon from 'sinon'
+import Vuex from 'vuex'
+import { mount } from '@vue/test-utils'
+import CsvImport from '@/components/CsvImport'
+import csv from '@/components/CsvImport/csv'
+
+describe('CsvImport.vue', () => {
+  let state = {}
+  let actions = {}
+  let mutations = {}
+  let store = {}
+  let clock
+  let wrapper
+  const newTabId = 1
+  const file = { name: 'my data.csv' }
+
+  beforeEach(() => {
+    clock = sinon.useFakeTimers()
+
+    // mock store state and mutations
+    state = {}
+    mutations = {
+      setDb: sinon.stub(),
+      setCurrentTabId: sinon.stub()
+    }
+    actions = {
+      addTab: sinon.stub().resolves(newTabId)
+    }
+    store = new Vuex.Store({ state, mutations, actions })
+
+    const db = {
+      sanitizeTableName: sinon.stub().returns('my_data'),
+      addTableFromCsv: sinon.stub().resolves(),
+      createProgressCounter: sinon.stub().returns(1),
+      deleteProgressCounter: sinon.stub(),
+      validateTableName: sinon.stub().resolves(),
+      execute: sinon.stub().resolves(),
+      refreshSchema: sinon.stub().resolves()
+    }
+
+    // mount the component
+    wrapper = mount(CsvImport, {
+      store,
+      propsData: {
+        file,
+        dialogName: 'addCsv',
+        db
+      }
+    })
+  })
+
+  afterEach(() => {
+    sinon.restore()
+  })
+
+  it('previews', async () => {
+    sinon.stub(csv, 'parse').resolves({
+      delimiter: '|',
+      data: {
+        columns: ['col1', 'col2'],
+        values: [
+          [1, 'foo'],
+          [2, 'bar']
+        ]
+      },
+      messages: [{
+        code: 'UndetectableDelimiter',
+        message: 'Comma was used as a standart delimiter',
+        row: 0,
+        type: 'info',
+        hint: undefined
+      }]
+    })
+
+    wrapper.vm.previewCsv()
+    await wrapper.vm.open()
+    await wrapper.vm.$nextTick()
+    expect(wrapper.find('[data-modal="addCsv"]').exists()).to.equal(true)
+    expect(wrapper.find('#csv-table-name input').element.value).to.equal('my_data')
+    expect(wrapper.findComponent({ name: 'delimiter-selector' }).vm.value).to.equal('|')
+    expect(wrapper.find('#quote-char input').element.value).to.equal('"')
+    expect(wrapper.find('#escape-char input').element.value).to.equal('"')
+    expect(wrapper.findComponent({ name: 'check-box' }).vm.checked).to.equal(true)
+    const rows = wrapper.findAll('tbody tr')
+    expect(rows).to.have.lengthOf(2)
+    expect(rows.at(0).findAll('td').at(0).text()).to.equal('1')
+    expect(rows.at(0).findAll('td').at(1).text()).to.equal('foo')
+    expect(rows.at(1).findAll('td').at(0).text()).to.equal('2')
+    expect(rows.at(1).findAll('td').at(1).text()).to.equal('bar')
+    expect(wrapper.findComponent({ name: 'logs' }).text())
+      .to.include('Information about row 0. Comma was used as a standart delimiter.')
+    expect(wrapper.findComponent({ name: 'logs' }).text())
+      .to.include('Preview parsing is completed in')
+    expect(wrapper.find('#csv-finish').isVisible()).to.equal(false)
+    expect(wrapper.find('#csv-import').isVisible()).to.equal(true)
+  })
+
+  it('reparses when parameters changes', async () => {
+    const parse = sinon.stub(csv, 'parse')
+    parse.onCall(0).resolves({
+      delimiter: '|',
+      data: {
+        columns: ['col1', 'col2'],
+        values: [
+          [1, 'foo']
+        ]
+      }
+    })
+
+    wrapper.vm.previewCsv()
+    wrapper.vm.open()
+    await csv.parse.returnValues[0]
+    await wrapper.vm.$nextTick()
+
+    parse.onCall(1).resolves({
+      delimiter: ',',
+      data: {
+        columns: ['col1', 'col2'],
+        values: [
+          [2, 'bar']
+        ]
+      },
+      hasErrors: false
+    })
+    await wrapper.find('.delimiter-selector-container input').setValue(',')
+    expect(parse.callCount).to.equal(2)
+    await csv.parse.returnValues[1]
+
+    let rows = wrapper.findAll('tbody tr')
+    expect(rows).to.have.lengthOf(1)
+    expect(rows.at(0).findAll('td').at(0).text()).to.equal('2')
+    expect(rows.at(0).findAll('td').at(1).text()).to.equal('bar')
+    expect(wrapper.findComponent({ name: 'logs' }).text())
+      .to.include('Preview parsing is completed in')
+
+    parse.onCall(2).resolves({
+      delimiter: ',',
+      data: {
+        columns: ['col1', 'col2'],
+        values: [
+          [3, 'baz']
+        ]
+      },
+      hasErrors: true,
+      messages: [{
+        code: 'MissingQuotes',
+        message: 'Quote is missed',
+        row: 0,
+        type: 'error',
+        hint: 'Edit your CSV so that the field has a closing quote char.'
+      }]
+    })
+
+    await wrapper.find('#quote-char input').setValue("'")
+    expect(parse.callCount).to.equal(3)
+    await csv.parse.returnValues[2]
+    rows = wrapper.findAll('tbody tr')
+    expect(rows).to.have.lengthOf(1)
+    expect(rows.at(0).findAll('td').at(0).text()).to.equal('3')
+    expect(rows.at(0).findAll('td').at(1).text()).to.equal('baz')
+    expect(wrapper.findComponent({ name: 'logs' }).text())
+      .to.contain('Error in row 0. Quote is missed. Edit your CSV so that the field has a closing quote char.')
+    expect(wrapper.findComponent({ name: 'logs' }).text())
+      .to.not.contain('Preview parsing is completed in')
+
+    parse.onCall(3).resolves({
+      delimiter: ',',
+      data: {
+        columns: ['col1', 'col2'],
+        values: [
+          [4, 'qux']
+        ]
+      },
+      hasErrors: false
+    })
+    await wrapper.find('#escape-char input').setValue("'")
+    expect(parse.callCount).to.equal(4)
+    await csv.parse.returnValues[3]
+    rows = wrapper.findAll('tbody tr')
+    expect(rows).to.have.lengthOf(1)
+    expect(rows.at(0).findAll('td').at(0).text()).to.equal('4')
+    expect(rows.at(0).findAll('td').at(1).text()).to.equal('qux')
+    expect(wrapper.findComponent({ name: 'logs' }).text())
+      .to.contain('Preview parsing is completed in')
+
+    parse.onCall(4).resolves({
+      delimiter: ',',
+      data: {
+        columns: ['col1', 'col2'],
+        values: [
+          [5, 'corge']
+        ]
+      },
+      hasErrors: false
+    })
+    await wrapper.findComponent({ name: 'check-box' }).trigger('click')
+    expect(parse.callCount).to.equal(5)
+    await csv.parse.returnValues[4]
+    rows = wrapper.findAll('tbody tr')
+    expect(rows).to.have.lengthOf(1)
+    expect(rows.at(0).findAll('td').at(0).text()).to.equal('5')
+    expect(rows.at(0).findAll('td').at(1).text()).to.equal('corge')
+    expect(wrapper.findComponent({ name: 'logs' }).text())
+      .to.include('Preview parsing is completed in')
+  })
+
+  it('has proper state before parsing is complete', async () => {
+    const parse = sinon.stub(csv, 'parse')
+    parse.onCall(0).resolves({
+      delimiter: '|',
+      data: {
+        columns: ['col1', 'col2'],
+        values: [
+          [1, 'foo']
+        ]
+      }
+    })
+
+    wrapper.vm.previewCsv()
+    wrapper.vm.open()
+    await wrapper.vm.$nextTick()
+
+    let resolveParsing
+    parse.onCall(1).returns(new Promise(resolve => {
+      resolveParsing = resolve
+    }))
+
+    await wrapper.find('#csv-table-name input').setValue('foo')
+    await wrapper.find('#csv-import').trigger('click')
+    await wrapper.vm.$nextTick()
+
+    // "Parsing CSV..." in the logs
+    expect(wrapper.findComponent({ name: 'logs' }).findAll('.msg').at(1).text())
+      .to.equal('Parsing CSV...')
+
+    // After 1 second - loading indicator is shown
+    await clock.tick(1000)
+    expect(
+      wrapper.findComponent({ name: 'logs' }).findComponent({ name: 'LoadingIndicator' }).exists()
+    ).to.equal(true)
+
+    // All the dialog controls are disabled
+    expect(wrapper.findComponent({ name: 'delimiter-selector' }).vm.disabled).to.equal(true)
+    expect(wrapper.find('#quote-char input').element.disabled).to.equal(true)
+    expect(wrapper.find('#escape-char input').element.disabled).to.equal(true)
+    expect(wrapper.findComponent({ name: 'check-box' }).vm.disabled).to.equal(true)
+    expect(wrapper.find('#csv-cancel').element.disabled).to.equal(true)
+    expect(wrapper.find('#csv-finish').element.disabled).to.equal(true)
+    expect(wrapper.findComponent({ name: 'close-icon' }).vm.disabled).to.equal(true)
+    expect(wrapper.find('#csv-finish').isVisible()).to.equal(false)
+    expect(wrapper.find('#csv-import').isVisible()).to.equal(true)
+    await resolveParsing()
+    await parse.returnValues[1]
+
+    // Loading indicator is not shown when parsing is compete
+    expect(
+      wrapper.findComponent({ name: 'logs' }).findComponent({ name: 'LoadingIndicator' }).exists()
+    ).to.equal(false)
+  })
+
+  it('parsing is completed successfully', async () => {
+    const parse = sinon.stub(csv, 'parse')
+    parse.onCall(0).resolves({
+      delimiter: '|',
+      data: {
+        columns: ['col1', 'col2'],
+        values: [
+          [1, 'foo']
+        ]
+      },
+      hasErrors: false,
+      messages: []
+    })
+
+    parse.onCall(1).resolves({
+      delimiter: '|',
+      data: {
+        columns: ['col1', 'col2'],
+        values: [
+          [1, 'foo'],
+          [2, 'bar']
+        ]
+      },
+      hasErrors: false,
+      messages: []
+    })
+
+    wrapper.vm.previewCsv()
+    wrapper.vm.open()
+    await wrapper.vm.$nextTick()
+
+    let resolveImport
+    wrapper.vm.db.addTableFromCsv.onCall(0).returns(new Promise(resolve => {
+      resolveImport = resolve
+    }))
+
+    await wrapper.find('#csv-table-name input').setValue('foo')
+    await wrapper.find('#csv-import').trigger('click')
+    await csv.parse.returnValues[1]
+    await wrapper.vm.$nextTick()
+
+    // Parsing success in the logs
+    expect(wrapper.findComponent({ name: 'logs' }).findAll('.msg').at(1).text())
+      .to.include('2 rows are parsed successfully in')
+
+    // All the dialog controls are disabled
+    expect(wrapper.findComponent({ name: 'delimiter-selector' }).vm.disabled).to.equal(true)
+    expect(wrapper.find('#quote-char input').element.disabled).to.equal(true)
+    expect(wrapper.find('#escape-char input').element.disabled).to.equal(true)
+    expect(wrapper.findComponent({ name: 'check-box' }).vm.disabled).to.equal(true)
+    expect(wrapper.find('#csv-cancel').element.disabled).to.equal(true)
+    expect(wrapper.find('#csv-finish').element.disabled).to.equal(true)
+    expect(wrapper.findComponent({ name: 'close-icon' }).vm.disabled).to.equal(true)
+    expect(wrapper.find('#csv-finish').isVisible()).to.equal(false)
+    expect(wrapper.find('#csv-import').isVisible()).to.equal(true)
+    await resolveImport()
+  })
+
+  it('parsing is completed with notes', async () => {
+    const parse = sinon.stub(csv, 'parse')
+    parse.onCall(0).resolves({
+      delimiter: '|',
+      data: {
+        columns: ['col1', 'col2'],
+        values: [
+          [1, 'foo']
+        ]
+      },
+      hasErrors: false,
+      messages: []
+    })
+
+    parse.onCall(1).resolves({
+      delimiter: '|',
+      data: {
+        columns: ['col1', 'col2'],
+        values: [
+          [1, 'foo'],
+          [2, 'bar']
+        ]
+      },
+      hasErrors: false,
+      messages: [{
+        code: 'UndetectableDelimiter',
+        message: 'Comma was used as a standart delimiter',
+        type: 'info',
+        hint: undefined
+      }]
+    })
+
+    let resolveImport
+    wrapper.vm.db.addTableFromCsv.onCall(0).returns(new Promise(resolve => {
+      resolveImport = resolve
+    }))
+
+    wrapper.vm.previewCsv()
+    wrapper.vm.open()
+    await wrapper.vm.$nextTick()
+
+    await wrapper.find('#csv-table-name input').setValue('foo')
+    await wrapper.find('#csv-import').trigger('click')
+    await csv.parse.returnValues[1]
+    await wrapper.vm.$nextTick()
+
+    // Parsing success in the logs
+    const logs = wrapper.findComponent({ name: 'logs' }).findAll('.msg')
+    expect(logs).to.have.lengthOf(4)
+    expect(logs.at(1).text()).to.include('2 rows are parsed in')
+    expect(logs.at(2).text()).to.equals('Comma was used as a standart delimiter.')
+
+    // All the dialog controls are disabled
+    expect(wrapper.findComponent({ name: 'delimiter-selector' }).vm.disabled).to.equal(true)
+    expect(wrapper.find('#quote-char input').element.disabled).to.equal(true)
+    expect(wrapper.find('#escape-char input').element.disabled).to.equal(true)
+    expect(wrapper.findComponent({ name: 'check-box' }).vm.disabled).to.equal(true)
+    expect(wrapper.find('#csv-cancel').element.disabled).to.equal(true)
+    expect(wrapper.find('#csv-finish').element.disabled).to.equal(true)
+    expect(wrapper.findComponent({ name: 'close-icon' }).vm.disabled).to.equal(true)
+    expect(wrapper.find('#csv-finish').isVisible()).to.equal(false)
+    expect(wrapper.find('#csv-import').isVisible()).to.equal(true)
+    await resolveImport()
+  })
+
+  it('parsing is completed with errors', async () => {
+    const parse = sinon.stub(csv, 'parse')
+    parse.onCall(0).resolves({
+      delimiter: '|',
+      data: {
+        columns: ['col1', 'col2'],
+        values: [
+          [1, 'foo']
+        ]
+      },
+      hasErrors: false,
+      messages: []
+    })
+
+    parse.onCall(1).resolves({
+      delimiter: '|',
+      data: {
+        columns: ['col1', 'col2'],
+        values: [
+          [1, 'foo'],
+          [2, 'bar']
+        ]
+      },
+      hasErrors: true,
+      messages: [{
+        code: 'Error',
+        message: 'Something is wrong',
+        type: 'error',
+        hint: undefined
+      }]
+    })
+
+    wrapper.vm.previewCsv()
+    wrapper.vm.open()
+    await wrapper.vm.$nextTick()
+
+    await wrapper.find('#csv-table-name input').setValue('foo')
+    await wrapper.find('#csv-import').trigger('click')
+    await csv.parse.returnValues[1]
+    await wrapper.vm.$nextTick()
+
+    // Parsing success in the logs
+    const logs = wrapper.findComponent({ name: 'logs' }).findAll('.msg')
+    expect(logs).to.have.lengthOf(3)
+    expect(logs.at(1).text()).to.include('Parsing ended with errors.')
+    expect(logs.at(2).text()).to.equals('Something is wrong.')
+
+    // All the dialog controls are enabled
+    expect(wrapper.findComponent({ name: 'delimiter-selector' }).vm.disabled).to.equal(false)
+    expect(wrapper.find('#quote-char input').element.disabled).to.equal(false)
+    expect(wrapper.find('#escape-char input').element.disabled).to.equal(false)
+    expect(wrapper.findComponent({ name: 'check-box' }).vm.disabled).to.equal(false)
+    expect(wrapper.find('#csv-cancel').element.disabled).to.equal(false)
+    expect(wrapper.find('#csv-finish').element.disabled).to.equal(false)
+    expect(wrapper.findComponent({ name: 'close-icon' }).vm.disabled).to.equal(false)
+    expect(wrapper.find('#csv-finish').isVisible()).to.equal(false)
+    expect(wrapper.find('#csv-import').isVisible()).to.equal(true)
+  })
+
+  it('has proper state before import is completed', async () => {
+    const parse = sinon.stub(csv, 'parse')
+    parse.onCall(0).resolves({
+      delimiter: '|',
+      data: {
+        columns: ['col1', 'col2'],
+        values: [
+          [1, 'foo']
+        ]
+      },
+      hasErrors: false,
+      messages: []
+    })
+
+    parse.onCall(1).resolves({
+      delimiter: '|',
+      data: {
+        columns: ['col1', 'col2'],
+        values: [
+          [1, 'foo'],
+          [2, 'bar']
+        ]
+      },
+      hasErrors: false,
+      messages: []
+    })
+
+    let resolveImport = sinon.stub()
+    wrapper.vm.db.addTableFromCsv = sinon.stub()
+      .resolves(new Promise(resolve => { resolveImport = resolve }))
+
+    wrapper.vm.previewCsv()
+    wrapper.vm.open()
+    await wrapper.vm.$nextTick()
+
+    await wrapper.find('#csv-table-name input').setValue('foo')
+    await wrapper.find('#csv-import').trigger('click')
+    await csv.parse.returnValues[1]
+    await wrapper.vm.$nextTick()
+
+    // Parsing success in the logs
+    expect(wrapper.findComponent({ name: 'logs' }).findAll('.msg').at(2).text())
+      .to.equal('Importing CSV into a SQLite database...')
+
+    // After 1 second - loading indicator is shown
+    await clock.tick(1000)
+    expect(
+      wrapper.findComponent({ name: 'logs' }).findComponent({ name: 'LoadingIndicator' }).exists()
+    ).to.equal(true)
+
+    // All the dialog controls are disabled
+    expect(wrapper.findComponent({ name: 'delimiter-selector' }).vm.disabled).to.equal(true)
+    expect(wrapper.find('#quote-char input').element.disabled).to.equal(true)
+    expect(wrapper.find('#escape-char input').element.disabled).to.equal(true)
+    expect(wrapper.findComponent({ name: 'check-box' }).vm.disabled).to.equal(true)
+    expect(wrapper.find('#csv-cancel').element.disabled).to.equal(true)
+    expect(wrapper.find('#csv-finish').element.disabled).to.equal(true)
+    expect(wrapper.findComponent({ name: 'close-icon' }).vm.disabled).to.equal(true)
+    expect(wrapper.find('#csv-finish').isVisible()).to.equal(false)
+    expect(wrapper.find('#csv-import').isVisible()).to.equal(true)
+    expect(wrapper.vm.db.addTableFromCsv.getCall(0).args[0]).to.equal('foo') // table name
+
+    // After resolving - loading indicator is not shown
+    await resolveImport()
+    await wrapper.vm.db.addTableFromCsv.returnValues[0]
+    expect(
+      wrapper.findComponent({ name: 'logs' }).findComponent({ name: 'LoadingIndicator' }).exists()
+    ).to.equal(false)
+  })
+
+  it('import success', async () => {
+    const parse = sinon.stub(csv, 'parse')
+    parse.onCall(0).resolves({
+      delimiter: '|',
+      data: {
+        columns: ['col1', 'col2'],
+        values: [
+          [1, 'foo']
+        ]
+      },
+      hasErrors: false,
+      messages: []
+    })
+    // we need to separate calles because messages will mutate
+    parse.onCall(1).resolves({
+      delimiter: '|',
+      data: {
+        columns: ['col1', 'col2'],
+        values: [
+          [1, 'foo'],
+          [2, 'bar']
+        ]
+      },
+      hasErrors: false,
+      messages: []
+    })
+
+    wrapper.vm.previewCsv()
+    wrapper.vm.open()
+    await wrapper.vm.$nextTick()
+
+    await wrapper.find('#csv-table-name input').setValue('foo')
+    await wrapper.find('#csv-import').trigger('click')
+    await csv.parse.returnValues[1]
+    await wrapper.vm.$nextTick()
+
+    // Import success in the logs
+    const logs = wrapper.findComponent({ name: 'logs' }).findAll('.msg')
+    expect(logs).to.have.lengthOf(3)
+    expect(logs.at(2).text()).to.contain('Importing CSV into a SQLite database is completed in')
+
+    // All the dialog controls are enabled
+    expect(wrapper.findComponent({ name: 'delimiter-selector' }).vm.disabled).to.equal(false)
+    expect(wrapper.find('#quote-char input').element.disabled).to.equal(false)
+    expect(wrapper.find('#escape-char input').element.disabled).to.equal(false)
+    expect(wrapper.findComponent({ name: 'check-box' }).vm.disabled).to.equal(false)
+    expect(wrapper.find('#csv-cancel').element.disabled).to.equal(false)
+    expect(wrapper.find('#csv-finish').element.disabled).to.equal(false)
+    expect(wrapper.findComponent({ name: 'close-icon' }).vm.disabled).to.equal(false)
+    expect(wrapper.find('#csv-finish').isVisible()).to.equal(true)
+  })
+
+  it('import fails', async () => {
+    const parse = sinon.stub(csv, 'parse')
+    parse.onCall(0).resolves({
+      delimiter: '|',
+      data: {
+        columns: ['col1', 'col2'],
+        values: [
+          [1, 'foo']
+        ]
+      },
+      hasErrors: false,
+      messages: []
+    })
+    // we need to separate calles because messages will mutate
+    parse.onCall(1).resolves({
+      delimiter: '|',
+      data: {
+        columns: ['col1', 'col2'],
+        values: [
+          [1, 'foo'],
+          [2, 'bar']
+        ]
+      },
+      hasErrors: false,
+      messages: []
+    })
+
+    wrapper.vm.db.addTableFromCsv = sinon.stub().rejects(new Error('fail'))
+
+    wrapper.vm.previewCsv()
+    wrapper.vm.open()
+    await wrapper.vm.$nextTick()
+
+    await wrapper.find('#csv-table-name input').setValue('foo')
+    await wrapper.find('#csv-import').trigger('click')
+    await csv.parse.returnValues[1]
+    await wrapper.vm.$nextTick()
+
+    // Import success in the logs
+    const logs = wrapper.findComponent({ name: 'logs' }).findAll('.msg')
+    expect(logs).to.have.lengthOf(4)
+    expect(logs.at(2).text()).to.contain('Importing CSV into a SQLite database...')
+    expect(logs.at(3).text()).to.equal('Error: fail.')
+
+    // All the dialog controls are enabled
+    expect(wrapper.findComponent({ name: 'delimiter-selector' }).vm.disabled).to.equal(false)
+    expect(wrapper.find('#quote-char input').element.disabled).to.equal(false)
+    expect(wrapper.find('#escape-char input').element.disabled).to.equal(false)
+    expect(wrapper.findComponent({ name: 'check-box' }).vm.disabled).to.equal(false)
+    expect(wrapper.find('#csv-cancel').element.disabled).to.equal(false)
+    expect(wrapper.find('#csv-finish').element.disabled).to.equal(false)
+    expect(wrapper.findComponent({ name: 'close-icon' }).vm.disabled).to.equal(false)
+    expect(wrapper.find('#csv-finish').isVisible()).to.equal(false)
+  })
+
+  it('import finish', async () => {
+    sinon.stub(csv, 'parse').resolves({
+      delimiter: '|',
+      data: {
+        columns: ['col1', 'col2'],
+        values: [
+          [1, 'foo']
+        ]
+      },
+      hasErrors: false,
+      messages: []
+    })
+
+    wrapper.vm.previewCsv()
+    wrapper.vm.open()
+    await wrapper.vm.$nextTick()
+
+    await wrapper.find('#csv-import').trigger('click')
+    await wrapper.vm.$nextTick()
+
+    await wrapper.find('#csv-finish').trigger('click')
+
+    expect(actions.addTab.calledOnce).to.equal(true)
+    await actions.addTab.returnValues[0]
+    expect(mutations.setCurrentTabId.calledOnceWith(state, newTabId)).to.equal(true)
+    expect(wrapper.find('[data-modal="addCsv"]').exists()).to.equal(false)
+    expect(wrapper.emitted('finish')).to.have.lengthOf(1)
+  })
+
+  it('import cancel', async () => {
+    sinon.stub(csv, 'parse').resolves({
+      delimiter: '|',
+      data: {
+        columns: ['col1', 'col2'],
+        values: [
+          [1, 'foo']
+        ]
+      },
+      hasErrors: false,
+      messages: []
+    })
+
+    await wrapper.vm.previewCsv()
+    await wrapper.vm.open()
+    await wrapper.vm.$nextTick()
+
+    await wrapper.find('#csv-import').trigger('click')
+    await wrapper.vm.$nextTick()
+
+    await wrapper.find('#csv-cancel').trigger('click')
+
+    expect(wrapper.find('[data-modal="addCsv"]').exists()).to.equal(false)
+    expect(wrapper.vm.db.execute.calledOnceWith('DROP TABLE "my_data"')).to.equal(true)
+    expect(wrapper.vm.db.refreshSchema.calledOnce).to.equal(true)
+    expect(wrapper.emitted('cancel')).to.have.lengthOf(1)
+  })
+
+  it('checks table name', async () => {
+    sinon.stub(csv, 'parse').resolves()
+    await wrapper.vm.previewCsv()
+    await wrapper.vm.open()
+    await wrapper.vm.$nextTick()
+
+    await wrapper.find('#csv-table-name input').setValue('foo')
+    await clock.tick(400)
+    await wrapper.vm.$nextTick()
+    expect(wrapper.find('#csv-table-name .text-field-error').text()).to.equal('')
+
+    wrapper.vm.db.validateTableName = sinon.stub().rejects(new Error('this is a bad table name'))
+    await wrapper.find('#csv-table-name input').setValue('bar')
+    await clock.tick(400)
+    await wrapper.vm.$nextTick()
+    expect(wrapper.find('#csv-table-name .text-field-error').text())
+      .to.equal('this is a bad table name. Try another table name.')
+
+    await wrapper.find('#csv-table-name input').setValue('')
+    await clock.tick(400)
+    await wrapper.vm.$nextTick()
+    expect(wrapper.find('#csv-table-name .text-field-error').text()).to.equal('')
+
+    await wrapper.find('#csv-import').trigger('click')
+    expect(wrapper.find('#csv-table-name .text-field-error').text())
+      .to.equal("Table name can't be empty")
+    expect(wrapper.vm.db.addTableFromCsv.called).to.equal(false)
+  })
+})

tests/components/CsvImport/DelimiterSelector.spec.js

@@ -1,6 +1,6 @@
 import { expect } from 'chai'
 import { mount, shallowMount } from '@vue/test-utils'
-import DelimiterSelector from '@/components/DelimiterSelector'
+import DelimiterSelector from '@/components/CsvImport/DelimiterSelector'
 
 describe('DelimiterSelector', async () => {
   it('shows the name of value', async () => {

tests/components/CsvImport/csv.spec.js

@@ -1,6 +1,6 @@
 import { expect } from 'chai'
 import sinon from 'sinon'
-import csv from '@/csv'
+import csv from '@/components/CsvImport/csv'
 import Papa from 'papaparse'
 
 describe('csv.js', () => {
@@ -11,18 +11,18 @@ describe('csv.js', () => {
   it('getResult with fields', () => {
     const source = {
       data: [
-        { id: 1, name: 'foo' },
-        { id: 2, name: 'bar' }
+        { id: 1, 'name ': 'foo', date: new Date('2021-06-30T14:10:24.717Z') },
+        { id: 2, 'name ': 'bar', date: new Date('2021-07-30T14:10:15.717Z') }
       ],
       meta: {
-        fields: ['id', 'name']
+        fields: ['id', 'name ', 'date']
       }
     }
     expect(csv.getResult(source)).to.eql({
-      columns: ['id', 'name'],
+      columns: ['id', 'name', 'date'],
       values: [
-        [1, 'foo'],
-        [2, 'bar']
+        [1, 'foo', '2021-06-30T14:10:24.717Z'],
+        [2, 'bar', '2021-07-30T14:10:15.717Z']
       ]
     })
   })
@@ -30,16 +30,16 @@ describe('csv.js', () => {
   it('getResult without fields', () => {
     const source = {
       data: [
-        [1, 'foo'],
-        [2, 'bar']
+        [1, 'foo', new Date('2021-06-30T14:10:24.717Z')],
+        [2, 'bar', new Date('2021-07-30T14:10:15.717Z')]
       ],
       meta: {}
     }
     expect(csv.getResult(source)).to.eql({
-      columns: ['col1', 'col2'],
+      columns: ['col1', 'col2', 'col3'],
       values: [
-        [1, 'foo'],
-        [2, 'bar']
+        [1, 'foo', '2021-06-30T14:10:24.717Z'],
+        [2, 'bar', '2021-07-30T14:10:15.717Z']
       ]
     })
   })

tests/components/DbUploader.spec.js

@@ -2,39 +2,41 @@ import { expect } from 'chai'
 import sinon from 'sinon'
 import Vuex from 'vuex'
 import { shallowMount, mount } from '@vue/test-utils'
-import DbUploader from '@/components/DbUploader.vue'
-import fu from '@/file.utils'
-import database from '@/database'
-import csv from '@/csv'
+import DbUploader from '@/components/DbUploader'
+import fu from '@/lib/utils/fileIo'
+import database from '@/lib/database'
 
 describe('DbUploader.vue', () => {
   let state = {}
   let mutations = {}
   let store = {}
+  let place
 
   beforeEach(() => {
     // mock store state and mutations
     state = {}
     mutations = {
-      saveSchema: sinon.stub(),
       setDb: sinon.stub()
     }
     store = new Vuex.Store({ state, mutations })
+
+    place = document.createElement('div')
+    document.body.appendChild(place)
   })
 
   afterEach(() => {
     sinon.restore()
+    place.remove()
   })
 
   it('loads db on click and redirects to /editor', async () => {
     // mock getting a file from user
-    const file = {}
+    const file = { name: 'test.db' }
     sinon.stub(fu, 'getFileFromUser').resolves(file)
 
     // mock db loading
-    const schema = {}
     const db = {
-      loadDb: sinon.stub().resolves(schema)
+      loadDb: sinon.stub().resolves()
     }
     sinon.stub(database, 'getNewDatabase').returns(db)
 
@@ -44,22 +46,27 @@ describe('DbUploader.vue', () => {
 
     // mount the component
     const wrapper = shallowMount(DbUploader, {
+      attachTo: place,
       store,
-      mocks: { $router, $route }
+      mocks: { $router, $route },
+      propsData: {
+        type: 'illustrated'
+      }
     })
 
     await wrapper.find('.drop-area').trigger('click')
     expect(db.loadDb.calledOnceWith(file)).to.equal(true)
     await db.loadDb.returnValues[0]
-    expect(mutations.saveSchema.calledOnceWith(state, schema)).to.equal(true)
+    await wrapper.vm.animationPromise
+    await wrapper.vm.$nextTick()
     expect($router.push.calledOnceWith('/editor')).to.equal(true)
+    wrapper.destroy()
   })
 
   it('loads db on drop and redirects to /editor', async () => {
     // mock db loading
-    const schema = {}
     const db = {
-      loadDb: sinon.stub().resolves(schema)
+      loadDb: sinon.stub().resolves()
     }
     sinon.stub(database, 'getNewDatabase').returns(db)
 
@@ -69,12 +76,16 @@ describe('DbUploader.vue', () => {
 
     // mount the component
     const wrapper = shallowMount(DbUploader, {
+      attachTo: place,
       store,
-      mocks: { $router, $route }
+      mocks: { $router, $route },
+      propsData: {
+        type: 'illustrated'
+      }
     })
 
     // mock a file dropped by a user
-    const file = {}
+    const file = { name: 'test.db' }
     const dropData = { dataTransfer: new DataTransfer() }
     Object.defineProperty(dropData.dataTransfer, 'files', {
       value: [file],
@@ -84,19 +95,20 @@ describe('DbUploader.vue', () => {
     await wrapper.find('.drop-area').trigger('drop', dropData)
     expect(db.loadDb.calledOnceWith(file)).to.equal(true)
     await db.loadDb.returnValues[0]
-    expect(mutations.saveSchema.calledOnceWith(state, schema)).to.equal(true)
+    await wrapper.vm.animationPromise
+    await wrapper.vm.$nextTick()
     expect($router.push.calledOnceWith('/editor')).to.equal(true)
+    wrapper.destroy()
   })
 
   it("doesn't redirect if already on /editor", async () => {
     // mock getting a file from user
-    const file = {}
+    const file = { name: 'test.db' }
     sinon.stub(fu, 'getFileFromUser').resolves(file)
 
     // mock db loading
-    const schema = {}
     const db = {
-      loadDb: sinon.stub().resolves(schema)
+      loadDb: sinon.stub().resolves()
     }
     sinon.stub(database, 'getNewDatabase').returns(db)
 
@@ -106,736 +118,82 @@ describe('DbUploader.vue', () => {
 
     // mount the component
     const wrapper = shallowMount(DbUploader, {
+      attachTo: place,
       store,
-      mocks: { $router, $route }
+      mocks: { $router, $route },
+      propsData: {
+        type: 'illustrated'
+      }
     })
 
     await wrapper.find('.drop-area').trigger('click')
     await db.loadDb.returnValues[0]
+    await wrapper.vm.animationPromise
+    await wrapper.vm.$nextTick()
     expect($router.push.called).to.equal(false)
-  })
-})
-
-describe('DbUploader.vue import CSV', () => {
-  let state = {}
-  let mutations = {}
-  let actions = {}
-  const newTabId = 1
-  let store = {}
-
-  // mock router
-  const $router = { }
-  const $route = { path: '/' }
-
-  let clock
-  let wrapper
-
-  beforeEach(() => {
-    // mock getting a file from user
-    sinon.stub(fu, 'getFileFromUser').resolves({ type: 'text/csv', name: 'foo.csv' })
-
-    clock = sinon.useFakeTimers()
-
-    // mock store state and mutations
-    state = {}
-    mutations = {
-      saveSchema: sinon.stub(),
-      setDb: sinon.stub(),
-      setCurrentTabId: sinon.stub()
-    }
-    actions = {
-      addTab: sinon.stub().resolves(newTabId)
-    }
-    store = new Vuex.Store({ state, mutations, actions })
-
-    $router.push = sinon.stub()
-
-    // mount the component
-    wrapper = mount(DbUploader, {
-      store,
-      mocks: { $router, $route }
-    })
-  })
-
-  afterEach(() => {
-    sinon.restore()
+    wrapper.destroy()
   })
 
   it('shows parse dialog if gets csv file', async () => {
-    sinon.stub(csv, 'parse').resolves({
-      delimiter: '|',
-      data: {
-        columns: ['col1', 'col2'],
-        values: [
-          [1, 'foo'],
-          [2, 'bar']
-        ]
-      },
-      messages: [{
-        code: 'UndetectableDelimiter',
-        message: 'Comma was used as a standart delimiter',
-        row: 0,
-        type: 'info',
-        hint: undefined
-      }]
-    })
+    // mock getting a file from user
+    const file = { name: 'test.csv' }
+    sinon.stub(fu, 'getFileFromUser').resolves(file)
 
-    await wrapper.find('.drop-area').trigger('click')
-    await csv.parse.returnValues[0]
-    await wrapper.vm.animationPromise
-    await wrapper.vm.$nextTick()
-    expect(wrapper.find('[data-modal="parse"]').exists()).to.equal(true)
-    expect(wrapper.findComponent({ name: 'delimiter-selector' }).vm.value).to.equal('|')
-    expect(wrapper.find('#quote-char input').element.value).to.equal('"')
-    expect(wrapper.find('#escape-char input').element.value).to.equal('"')
-    expect(wrapper.findComponent({ name: 'check-box' }).vm.checked).to.equal(true)
-    const rows = wrapper.findAll('tbody tr')
-    expect(rows).to.have.lengthOf(2)
-    expect(rows.at(0).findAll('td').at(0).text()).to.equal('1')
-    expect(rows.at(0).findAll('td').at(1).text()).to.equal('foo')
-    expect(rows.at(1).findAll('td').at(0).text()).to.equal('2')
-    expect(rows.at(1).findAll('td').at(1).text()).to.equal('bar')
-    expect(wrapper.findComponent({ name: 'logs' }).text())
-      .to.include('Information about row 0. Comma was used as a standart delimiter.')
-    expect(wrapper.findComponent({ name: 'logs' }).text())
-      .to.include('Preview parsing is completed in')
-    expect(wrapper.find('#csv-finish').isVisible()).to.equal(false)
-    expect(wrapper.find('#csv-import').isVisible()).to.equal(true)
-  })
+    // mock router
+    const $router = { push: sinon.stub() }
+    const $route = { path: '/editor' }
 
-  it('reparses when parameters changes', async () => {
-    const parse = sinon.stub(csv, 'parse')
-    parse.onCall(0).resolves({
-      delimiter: '|',
-      data: {
-        columns: ['col1', 'col2'],
-        values: [
-          [1, 'foo']
-        ]
+    // mount the component
+    const wrapper = mount(DbUploader, {
+      attachTo: place,
+      store,
+      mocks: { $router, $route },
+      propsData: {
+        type: 'illustrated'
       }
     })
 
+    const CsvImport = wrapper.vm.$refs.addCsv
+    sinon.stub(CsvImport, 'reset')
+    sinon.stub(CsvImport, 'previewCsv').resolves()
+    sinon.stub(CsvImport, 'open')
+
     await wrapper.find('.drop-area').trigger('click')
-    await csv.parse.returnValues[0]
-    await wrapper.vm.animationPromise
     await wrapper.vm.$nextTick()
-
-    parse.onCall(1).resolves({
-      delimiter: ',',
-      data: {
-        columns: ['col1', 'col2'],
-        values: [
-          [2, 'bar']
-        ]
-      },
-      hasErrors: false
-    })
-    await wrapper.find('.delimiter-selector-container input').setValue(',')
-    expect(parse.callCount).to.equal(2)
-    await csv.parse.returnValues[1]
-
-    let rows = wrapper.findAll('tbody tr')
-    expect(rows).to.have.lengthOf(1)
-    expect(rows.at(0).findAll('td').at(0).text()).to.equal('2')
-    expect(rows.at(0).findAll('td').at(1).text()).to.equal('bar')
-    expect(wrapper.findComponent({ name: 'logs' }).text())
-      .to.include('Preview parsing is completed in')
-
-    parse.onCall(2).resolves({
-      delimiter: ',',
-      data: {
-        columns: ['col1', 'col2'],
-        values: [
-          [3, 'baz']
-        ]
-      },
-      hasErrors: true,
-      messages: [{
-        code: 'MissingQuotes',
-        message: 'Quote is missed',
-        row: 0,
-        type: 'error',
-        hint: 'Edit your CSV so that the field has a closing quote char.'
-      }]
-    })
-
-    await wrapper.find('#quote-char input').setValue("'")
-    expect(parse.callCount).to.equal(3)
-    await csv.parse.returnValues[2]
-    rows = wrapper.findAll('tbody tr')
-    expect(rows).to.have.lengthOf(1)
-    expect(rows.at(0).findAll('td').at(0).text()).to.equal('3')
-    expect(rows.at(0).findAll('td').at(1).text()).to.equal('baz')
-    expect(wrapper.findComponent({ name: 'logs' }).text())
-      .to.contain('Error in row 0. Quote is missed. Edit your CSV so that the field has a closing quote char.')
-    expect(wrapper.findComponent({ name: 'logs' }).text())
-      .to.not.contain('Preview parsing is completed in')
-
-    parse.onCall(3).resolves({
-      delimiter: ',',
-      data: {
-        columns: ['col1', 'col2'],
-        values: [
-          [4, 'qux']
-        ]
-      },
-      hasErrors: false
-    })
-    await wrapper.find('#escape-char input').setValue("'")
-    expect(parse.callCount).to.equal(4)
-    await csv.parse.returnValues[3]
-    rows = wrapper.findAll('tbody tr')
-    expect(rows).to.have.lengthOf(1)
-    expect(rows.at(0).findAll('td').at(0).text()).to.equal('4')
-    expect(rows.at(0).findAll('td').at(1).text()).to.equal('qux')
-    expect(wrapper.findComponent({ name: 'logs' }).text())
-      .to.contain('Preview parsing is completed in')
-
-    parse.onCall(4).resolves({
-      delimiter: ',',
-      data: {
-        columns: ['col1', 'col2'],
-        values: [
-          [5, 'corge']
-        ]
-      },
-      hasErrors: false
-    })
-    await wrapper.findComponent({ name: 'check-box' }).trigger('click')
-    expect(parse.callCount).to.equal(5)
-    await csv.parse.returnValues[4]
-    rows = wrapper.findAll('tbody tr')
-    expect(rows).to.have.lengthOf(1)
-    expect(rows.at(0).findAll('td').at(0).text()).to.equal('5')
-    expect(rows.at(0).findAll('td').at(1).text()).to.equal('corge')
-    expect(wrapper.findComponent({ name: 'logs' }).text())
-      .to.include('Preview parsing is completed in')
+    expect(CsvImport.reset.calledOnce).to.equal(true)
+    await wrapper.vm.animationPromise
+    expect(CsvImport.previewCsv.calledOnce).to.equal(true)
+    await wrapper.vm.$nextTick()
+    expect(CsvImport.open.calledOnce).to.equal(true)
+    wrapper.destroy()
   })
 
-  it('has proper state before parsing is complete', async () => {
-    const parse = sinon.stub(csv, 'parse')
-    parse.onCall(0).resolves({
-      delimiter: '|',
-      data: {
-        columns: ['col1', 'col2'],
-        values: [
-          [1, 'foo']
-        ]
+  it('deletes temporary db if CSV import is canceled', async () => {
+    // mock getting a file from user
+    const file = { name: 'test.csv' }
+    sinon.stub(fu, 'getFileFromUser').resolves(file)
+
+    // mock router
+    const $router = { push: sinon.stub() }
+    const $route = { path: '/editor' }
+
+    // mount the component
+    const wrapper = mount(DbUploader, {
+      store,
+      mocks: { $router, $route },
+      propsData: {
+        type: 'illustrated'
       }
     })
 
-    await wrapper.find('.drop-area').trigger('click')
-    await csv.parse.returnValues[0]
-    await wrapper.vm.animationPromise
-    await wrapper.vm.$nextTick()
-
-    let resolveParsing
-    parse.onCall(1).returns(new Promise(resolve => {
-      resolveParsing = resolve
-    }))
-    await wrapper.find('#csv-import').trigger('click')
-
-    // "Parsing CSV..." in the logs
-    expect(wrapper.findComponent({ name: 'logs' }).findAll('.msg').at(1).text())
-      .to.equal('Parsing CSV...')
-
-    // After 1 second - loading indicator is shown
-    await clock.tick(1000)
-    expect(
-      wrapper.findComponent({ name: 'logs' }).findComponent({ name: 'LoadingIndicator' }).exists()
-    ).to.equal(true)
-
-    // All the dialog controls are disabled
-    expect(wrapper.findComponent({ name: 'delimiter-selector' }).vm.disabled).to.equal(true)
-    expect(wrapper.find('#quote-char input').element.disabled).to.equal(true)
-    expect(wrapper.find('#escape-char input').element.disabled).to.equal(true)
-    expect(wrapper.findComponent({ name: 'check-box' }).vm.disabled).to.equal(true)
-    expect(wrapper.find('#csv-cancel').element.disabled).to.equal(true)
-    expect(wrapper.find('#csv-finish').element.disabled).to.equal(true)
-    expect(wrapper.findComponent({ name: 'close-icon' }).vm.disabled).to.equal(true)
-    expect(wrapper.find('#csv-finish').isVisible()).to.equal(false)
-    expect(wrapper.find('#csv-import').isVisible()).to.equal(true)
-    await resolveParsing()
-    await parse.returnValues[1]
-
-    // Loading indicator is not shown when parsing is compete
-    expect(
-      wrapper.findComponent({ name: 'logs' }).findComponent({ name: 'LoadingIndicator' }).exists()
-    ).to.equal(false)
-  })
-
-  it('parsing is completed successfully', async () => {
-    const parse = sinon.stub(csv, 'parse')
-    parse.onCall(0).resolves({
-      delimiter: '|',
-      data: {
-        columns: ['col1', 'col2'],
-        values: [
-          [1, 'foo']
-        ]
-      },
-      hasErrors: false,
-      messages: []
-    })
-
-    parse.onCall(1).resolves({
-      delimiter: '|',
-      data: {
-        columns: ['col1', 'col2'],
-        values: [
-          [1, 'foo'],
-          [2, 'bar']
-        ]
-      },
-      hasErrors: false,
-      messages: []
-    })
+    const CsvImport = wrapper.vm.$refs.addCsv
+    sinon.stub(CsvImport, 'reset')
+    sinon.stub(CsvImport, 'previewCsv').resolves()
+    sinon.stub(CsvImport, 'open')
 
     await wrapper.find('.drop-area').trigger('click')
-    await csv.parse.returnValues[0]
-    await wrapper.vm.animationPromise
     await wrapper.vm.$nextTick()
-
-    await wrapper.find('#csv-import').trigger('click')
-    await csv.parse.returnValues[1]
-    await wrapper.vm.$nextTick()
-
-    // Parsing success in the logs
-    expect(wrapper.findComponent({ name: 'logs' }).findAll('.msg').at(1).text())
-      .to.include('2 rows are parsed successfully in')
-
-    // All the dialog controls are disabled
-    expect(wrapper.findComponent({ name: 'delimiter-selector' }).vm.disabled).to.equal(true)
-    expect(wrapper.find('#quote-char input').element.disabled).to.equal(true)
-    expect(wrapper.find('#escape-char input').element.disabled).to.equal(true)
-    expect(wrapper.findComponent({ name: 'check-box' }).vm.disabled).to.equal(true)
-    expect(wrapper.find('#csv-cancel').element.disabled).to.equal(true)
-    expect(wrapper.find('#csv-finish').element.disabled).to.equal(true)
-    expect(wrapper.findComponent({ name: 'close-icon' }).vm.disabled).to.equal(true)
-    expect(wrapper.find('#csv-finish').isVisible()).to.equal(false)
-    expect(wrapper.find('#csv-import').isVisible()).to.equal(true)
-  })
-
-  it('parsing is completed with notes', async () => {
-    const parse = sinon.stub(csv, 'parse')
-    parse.onCall(0).resolves({
-      delimiter: '|',
-      data: {
-        columns: ['col1', 'col2'],
-        values: [
-          [1, 'foo']
-        ]
-      },
-      hasErrors: false,
-      messages: []
-    })
-
-    parse.onCall(1).resolves({
-      delimiter: '|',
-      data: {
-        columns: ['col1', 'col2'],
-        values: [
-          [1, 'foo'],
-          [2, 'bar']
-        ]
-      },
-      hasErrors: false,
-      messages: [{
-        code: 'UndetectableDelimiter',
-        message: 'Comma was used as a standart delimiter',
-        type: 'info',
-        hint: undefined
-      }]
-    })
-
-    await wrapper.find('.drop-area').trigger('click')
-    await csv.parse.returnValues[0]
-    await wrapper.vm.animationPromise
-    await wrapper.vm.$nextTick()
-
-    await wrapper.find('#csv-import').trigger('click')
-    await csv.parse.returnValues[1]
-    await wrapper.vm.$nextTick()
-
-    // Parsing success in the logs
-    const logs = wrapper.findComponent({ name: 'logs' }).findAll('.msg')
-    expect(logs).to.have.lengthOf(4)
-    expect(logs.at(1).text()).to.include('2 rows are parsed in')
-    expect(logs.at(2).text()).to.equals('Comma was used as a standart delimiter.')
-
-    // All the dialog controls are disabled
-    expect(wrapper.findComponent({ name: 'delimiter-selector' }).vm.disabled).to.equal(true)
-    expect(wrapper.find('#quote-char input').element.disabled).to.equal(true)
-    expect(wrapper.find('#escape-char input').element.disabled).to.equal(true)
-    expect(wrapper.findComponent({ name: 'check-box' }).vm.disabled).to.equal(true)
-    expect(wrapper.find('#csv-cancel').element.disabled).to.equal(true)
-    expect(wrapper.find('#csv-finish').element.disabled).to.equal(true)
-    expect(wrapper.findComponent({ name: 'close-icon' }).vm.disabled).to.equal(true)
-    expect(wrapper.find('#csv-finish').isVisible()).to.equal(false)
-    expect(wrapper.find('#csv-import').isVisible()).to.equal(true)
-  })
-
-  it('parsing is completed with errors', async () => {
-    const parse = sinon.stub(csv, 'parse')
-    parse.onCall(0).resolves({
-      delimiter: '|',
-      data: {
-        columns: ['col1', 'col2'],
-        values: [
-          [1, 'foo']
-        ]
-      },
-      hasErrors: false,
-      messages: []
-    })
-
-    parse.onCall(1).resolves({
-      delimiter: '|',
-      data: {
-        columns: ['col1', 'col2'],
-        values: [
-          [1, 'foo'],
-          [2, 'bar']
-        ]
-      },
-      hasErrors: true,
-      messages: [{
-        code: 'Error',
-        message: 'Something is wrong',
-        type: 'error',
-        hint: undefined
-      }]
-    })
-
-    await wrapper.find('.drop-area').trigger('click')
-    await csv.parse.returnValues[0]
-    await wrapper.vm.animationPromise
-    await wrapper.vm.$nextTick()
-
-    await wrapper.find('#csv-import').trigger('click')
-    await csv.parse.returnValues[1]
-    await wrapper.vm.$nextTick()
-
-    // Parsing success in the logs
-    const logs = wrapper.findComponent({ name: 'logs' }).findAll('.msg')
-    expect(logs).to.have.lengthOf(3)
-    expect(logs.at(1).text()).to.include('Parsing ended with errors.')
-    expect(logs.at(2).text()).to.equals('Something is wrong.')
-
-    // All the dialog controls are enabled
-    expect(wrapper.findComponent({ name: 'delimiter-selector' }).vm.disabled).to.equal(false)
-    expect(wrapper.find('#quote-char input').element.disabled).to.equal(false)
-    expect(wrapper.find('#escape-char input').element.disabled).to.equal(false)
-    expect(wrapper.findComponent({ name: 'check-box' }).vm.disabled).to.equal(false)
-    expect(wrapper.find('#csv-cancel').element.disabled).to.equal(false)
-    expect(wrapper.find('#csv-finish').element.disabled).to.equal(false)
-    expect(wrapper.findComponent({ name: 'close-icon' }).vm.disabled).to.equal(false)
-    expect(wrapper.find('#csv-finish').isVisible()).to.equal(false)
-    expect(wrapper.find('#csv-import').isVisible()).to.equal(true)
-  })
-
-  it('has proper state before import is completed', async () => {
-    const parse = sinon.stub(csv, 'parse')
-    parse.onCall(0).resolves({
-      delimiter: '|',
-      data: {
-        columns: ['col1', 'col2'],
-        values: [
-          [1, 'foo']
-        ]
-      },
-      hasErrors: false,
-      messages: []
-    })
-
-    parse.onCall(1).resolves({
-      delimiter: '|',
-      data: {
-        columns: ['col1', 'col2'],
-        values: [
-          [1, 'foo'],
-          [2, 'bar']
-        ]
-      },
-      hasErrors: false,
-      messages: []
-    })
-
-    let resolveImport = sinon.stub()
-    const newDb = {
-      createDb: sinon.stub().resolves(new Promise(resolve => { resolveImport = resolve })),
-      createProgressCounter: sinon.stub().returns(1),
-      deleteProgressCounter: sinon.stub()
-    }
-    sinon.stub(database, 'getNewDatabase').returns(newDb)
-
-    await wrapper.find('.drop-area').trigger('click')
-    await csv.parse.returnValues[0]
-    await wrapper.vm.animationPromise
-    await wrapper.vm.$nextTick()
-
-    await wrapper.find('#csv-import').trigger('click')
-    await csv.parse.returnValues[1]
-    await wrapper.vm.$nextTick()
-
-    // Parsing success in the logs
-    expect(wrapper.findComponent({ name: 'logs' }).findAll('.msg').at(2).text())
-      .to.equal('Importing CSV into a SQLite database...')
-
-    // After 1 second - loading indicator is shown
-    await clock.tick(1000)
-    expect(
-      wrapper.findComponent({ name: 'logs' }).findComponent({ name: 'LoadingIndicator' }).exists()
-    ).to.equal(true)
-
-    // All the dialog controls are disabled
-    expect(wrapper.findComponent({ name: 'delimiter-selector' }).vm.disabled).to.equal(true)
-    expect(wrapper.find('#quote-char input').element.disabled).to.equal(true)
-    expect(wrapper.find('#escape-char input').element.disabled).to.equal(true)
-    expect(wrapper.findComponent({ name: 'check-box' }).vm.disabled).to.equal(true)
-    expect(wrapper.find('#csv-cancel').element.disabled).to.equal(true)
-    expect(wrapper.find('#csv-finish').element.disabled).to.equal(true)
-    expect(wrapper.findComponent({ name: 'close-icon' }).vm.disabled).to.equal(true)
-    expect(wrapper.find('#csv-finish').isVisible()).to.equal(false)
-    expect(wrapper.find('#csv-import').isVisible()).to.equal(true)
-    expect(newDb.createDb.getCall(0).args[0]).to.equal('foo') // file name
-
-    // After resolving - loading indicator is not shown
-    await resolveImport()
-    await newDb.createDb.returnValues[0]
-    expect(
-      wrapper.findComponent({ name: 'logs' }).findComponent({ name: 'LoadingIndicator' }).exists()
-    ).to.equal(false)
-  })
-
-  it('import success', async () => {
-    const parse = sinon.stub(csv, 'parse')
-    parse.onCall(0).resolves({
-      delimiter: '|',
-      data: {
-        columns: ['col1', 'col2'],
-        values: [
-          [1, 'foo']
-        ]
-      },
-      hasErrors: false,
-      messages: []
-    })
-
-    parse.onCall(1).resolves({
-      delimiter: '|',
-      data: {
-        columns: ['col1', 'col2'],
-        values: [
-          [1, 'foo'],
-          [2, 'bar']
-        ]
-      },
-      hasErrors: false,
-      messages: []
-    })
-
-    const schema = {}
-    const newDb = {
-      createDb: sinon.stub().resolves(schema),
-      createProgressCounter: sinon.stub().returns(1),
-      deleteProgressCounter: sinon.stub()
-    }
-    sinon.stub(database, 'getNewDatabase').returns(newDb)
-
-    await wrapper.find('.drop-area').trigger('click')
-    await csv.parse.returnValues[0]
-    await wrapper.vm.animationPromise
-    await wrapper.vm.$nextTick()
-
-    await wrapper.find('#csv-import').trigger('click')
-    await csv.parse.returnValues[1]
-    await wrapper.vm.$nextTick()
-
-    // Import success in the logs
-    const logs = wrapper.findComponent({ name: 'logs' }).findAll('.msg')
-    expect(logs).to.have.lengthOf(3)
-    expect(logs.at(2).text()).to.contain('Importing CSV into a SQLite database is completed in')
-
-    // All the dialog controls are enabled
-    expect(wrapper.findComponent({ name: 'delimiter-selector' }).vm.disabled).to.equal(false)
-    expect(wrapper.find('#quote-char input').element.disabled).to.equal(false)
-    expect(wrapper.find('#escape-char input').element.disabled).to.equal(false)
-    expect(wrapper.findComponent({ name: 'check-box' }).vm.disabled).to.equal(false)
-    expect(wrapper.find('#csv-cancel').element.disabled).to.equal(false)
-    expect(wrapper.find('#csv-finish').element.disabled).to.equal(false)
-    expect(wrapper.findComponent({ name: 'close-icon' }).vm.disabled).to.equal(false)
-    expect(wrapper.find('#csv-finish').isVisible()).to.equal(true)
-  })
-
-  it('import fails', async () => {
-    const parse = sinon.stub(csv, 'parse')
-    parse.onCall(0).resolves({
-      delimiter: '|',
-      data: {
-        columns: ['col1', 'col2'],
-        values: [
-          [1, 'foo']
-        ]
-      },
-      hasErrors: false,
-      messages: []
-    })
-
-    parse.onCall(1).resolves({
-      delimiter: '|',
-      data: {
-        columns: ['col1', 'col2'],
-        values: [
-          [1, 'foo'],
-          [2, 'bar']
-        ]
-      },
-      hasErrors: false,
-      messages: []
-    })
-
-    const newDb = {
-      createDb: sinon.stub().rejects(new Error('fail')),
-      createProgressCounter: sinon.stub().returns(1),
-      deleteProgressCounter: sinon.stub()
-    }
-    sinon.stub(database, 'getNewDatabase').returns(newDb)
-
-    await wrapper.find('.drop-area').trigger('click')
-    await csv.parse.returnValues[0]
-    await wrapper.vm.animationPromise
-    await wrapper.vm.$nextTick()
-
-    await wrapper.find('#csv-import').trigger('click')
-    await csv.parse.returnValues[1]
-    await wrapper.vm.$nextTick()
-
-    // Import success in the logs
-    const logs = wrapper.findComponent({ name: 'logs' }).findAll('.msg')
-    expect(logs).to.have.lengthOf(4)
-    expect(logs.at(2).text()).to.contain('Importing CSV into a SQLite database...')
-    expect(logs.at(3).text()).to.equal('Error: fail.')
-
-    // All the dialog controls are enabled
-    expect(wrapper.findComponent({ name: 'delimiter-selector' }).vm.disabled).to.equal(false)
-    expect(wrapper.find('#quote-char input').element.disabled).to.equal(false)
-    expect(wrapper.find('#escape-char input').element.disabled).to.equal(false)
-    expect(wrapper.findComponent({ name: 'check-box' }).vm.disabled).to.equal(false)
-    expect(wrapper.find('#csv-cancel').element.disabled).to.equal(false)
-    expect(wrapper.find('#csv-finish').element.disabled).to.equal(false)
-    expect(wrapper.findComponent({ name: 'close-icon' }).vm.disabled).to.equal(false)
-    expect(wrapper.find('#csv-finish').isVisible()).to.equal(false)
-  })
-
-  it('import final', async () => {
-    const parse = sinon.stub(csv, 'parse')
-    parse.onCall(0).resolves({
-      delimiter: '|',
-      data: {
-        columns: ['col1', 'col2'],
-        values: [
-          [1, 'foo']
-        ]
-      },
-      hasErrors: false,
-      messages: []
-    })
-
-    parse.onCall(1).resolves({
-      delimiter: '|',
-      data: {
-        columns: ['col1', 'col2'],
-        values: [
-          [1, 'foo'],
-          [2, 'bar']
-        ]
-      },
-      hasErrors: false,
-      messages: []
-    })
-
-    const schema = {}
-    const newDb = {
-      createDb: sinon.stub().resolves(schema),
-      createProgressCounter: sinon.stub().returns(1),
-      deleteProgressCounter: sinon.stub()
-    }
-    sinon.stub(database, 'getNewDatabase').returns(newDb)
-
-    await wrapper.find('.drop-area').trigger('click')
-    await csv.parse.returnValues[0]
-    await wrapper.vm.animationPromise
-    await wrapper.vm.$nextTick()
-
-    await wrapper.find('#csv-import').trigger('click')
-    await csv.parse.returnValues[1]
-    await wrapper.vm.$nextTick()
-
-    await wrapper.find('#csv-finish').trigger('click')
-
-    expect(mutations.setDb.calledOnceWith(state, newDb)).to.equal(true)
-    expect(mutations.saveSchema.calledOnceWith(state, schema)).to.equal(true)
-    expect(actions.addTab.calledOnce).to.equal(true)
-    await actions.addTab.returnValues[0]
-    expect(mutations.setCurrentTabId.calledOnceWith(state, newTabId)).to.equal(true)
-    expect($router.push.calledOnceWith('/editor')).to.equal(true)
-    expect(wrapper.find('[data-modal="parse"]').exists()).to.equal(false)
-  })
-
-  it('import cancel', async () => {
-    const parse = sinon.stub(csv, 'parse')
-    parse.onCall(0).resolves({
-      delimiter: '|',
-      data: {
-        columns: ['col1', 'col2'],
-        values: [
-          [1, 'foo']
-        ]
-      },
-      hasErrors: false,
-      messages: []
-    })
-
-    parse.onCall(1).resolves({
-      delimiter: '|',
-      data: {
-        columns: ['col1', 'col2'],
-        values: [
-          [1, 'foo'],
-          [2, 'bar']
-        ]
-      },
-      hasErrors: false,
-      messages: []
-    })
-
-    const schema = {}
-    const newDb = {
-      createDb: sinon.stub().resolves(schema),
-      createProgressCounter: sinon.stub().returns(1),
-      deleteProgressCounter: sinon.stub(),
-      shutDown: sinon.stub()
-    }
-    sinon.stub(database, 'getNewDatabase').returns(newDb)
-
-    await wrapper.find('.drop-area').trigger('click')
-    await csv.parse.returnValues[0]
-    await wrapper.vm.animationPromise
-    await wrapper.vm.$nextTick()
-
-    await wrapper.find('#csv-import').trigger('click')
-    await csv.parse.returnValues[1]
-    await wrapper.vm.$nextTick()
-
-    await wrapper.find('#csv-cancel').trigger('click')
-
-    expect(mutations.setDb.called).to.equal(false)
-    expect(mutations.saveSchema.called).to.equal(false)
-    expect(actions.addTab.called).to.equal(false)
-    expect(mutations.setCurrentTabId.called).to.equal(false)
-    expect($router.push.called).to.equal(false)
-    expect(newDb.shutDown.calledOnce).to.equal(true)
-    expect(wrapper.find('[data-modal="parse"]').exists()).to.equal(false)
+    await CsvImport.$emit('cancel')
+    expect(wrapper.vm.newDb).to.equal(null)
   })
 })

tests/components/LoadingIndicator.spec.js

@@ -1,6 +1,6 @@
 import { expect } from 'chai'
 import { shallowMount } from '@vue/test-utils'
-import LoadingIndicator from '@/components/LoadingIndicator.vue'
+import LoadingIndicator from '@/components/LoadingIndicator'
 
 describe('LoadingIndicator.vue', () => {
   it('Calculates animation class', async () => {

tests/components/Logs.spec.js

@@ -1,6 +1,6 @@
 import { expect } from 'chai'
 import { shallowMount } from '@vue/test-utils'
-import Logs from '@/components/Logs.vue'
+import Logs from '@/components/Logs'
 
 let place
 describe('Logs.vue', () => {

tests/components/Schema.spec.js

@@ -1,115 +0,0 @@
-import { expect } from 'chai'
-import sinon from 'sinon'
-import { mount, createLocalVue } from '@vue/test-utils'
-import Vuex from 'vuex'
-import Schema from '@/components/Schema.vue'
-import TableDescription from '@/components/TableDescription.vue'
-
-const localVue = createLocalVue()
-localVue.use(Vuex)
-
-describe('Schema.vue', () => {
-  afterEach(() => {
-    sinon.restore()
-  })
-
-  it('Renders DB name on initial', () => {
-    // mock store state
-    const state = {
-      dbName: 'fooDB'
-    }
-    const store = new Vuex.Store({ state })
-
-    // mout the component
-    const wrapper = mount(Schema, { store, localVue })
-
-    // check DB name and schema visibility
-    expect(wrapper.find('.db-name').text()).to.equal('fooDB')
-    expect(wrapper.find('.schema').isVisible()).to.equal(true)
-  })
-
-  it('Schema visibility is toggled when click on DB name', async () => {
-    // mock store state
-    const state = {
-      dbName: 'fooDB'
-    }
-    const store = new Vuex.Store({ state })
-
-    // mout the component
-    const wrapper = mount(Schema, { store, localVue })
-
-    // click and check visibility
-    await wrapper.find('.db-name').trigger('click')
-    expect(wrapper.find('.schema').isVisible()).to.equal(false)
-    await wrapper.find('.db-name').trigger('click')
-    expect(wrapper.find('.schema').isVisible()).to.equal(true)
-  })
-
-  it('Schema filter', async () => {
-    // mock store state
-    const state = {
-      dbName: 'fooDB',
-      schema: [
-        {
-          name: 'foo',
-          columns: [
-            { name: 'id', type: 'INTEGER' },
-            { name: 'title', type: 'NVARCHAR(24)' }
-          ]
-        },
-        {
-          name: 'bar',
-          columns: [
-            { name: 'id', type: 'INTEGER' },
-            { name: 'price', type: 'INTEGER' }
-          ]
-        },
-        {
-          name: 'foobar',
-          columns: [
-            { name: 'id', type: 'INTEGER' },
-            { name: 'price', type: 'INTEGER' }
-          ]
-        }
-      ]
-    }
-    const store = new Vuex.Store({ state })
-
-    // mount the component
-    const wrapper = mount(Schema, { store, localVue })
-
-    // apply filters and check the list of tables
-    await wrapper.find('#schema-filter input').setValue('foo')
-    let tables = wrapper.findAllComponents(TableDescription)
-    expect(tables).to.have.lengthOf(2)
-    expect(tables.at(0).vm.name).to.equal('foo')
-    expect(tables.at(1).vm.name).to.equal('foobar')
-
-    await wrapper.find('#schema-filter input').setValue('bar')
-    tables = wrapper.findAllComponents(TableDescription)
-    expect(tables).to.have.lengthOf(2)
-    expect(tables.at(0).vm.name).to.equal('bar')
-    expect(tables.at(1).vm.name).to.equal('foobar')
-
-    await wrapper.find('#schema-filter input').setValue('')
-    tables = wrapper.findAllComponents(TableDescription)
-    expect(tables).to.have.lengthOf(3)
-    expect(tables.at(0).vm.name).to.equal('foo')
-    expect(tables.at(1).vm.name).to.equal('bar')
-    expect(tables.at(2).vm.name).to.equal('foobar')
-  })
-
-  it('exports db', async () => {
-    const state = {
-      dbName: 'fooDB',
-      db: {
-        export: sinon.stub().resolves()
-      }
-    }
-    const store = new Vuex.Store({ state })
-    const wrapper = mount(Schema, { store, localVue })
-
-    await wrapper.findComponent({ name: 'export-icon' }).trigger('click')
-    expect(state.db.export.calledOnceWith('fooDB'))
-  })
-})

tests/components/Splitpanes/Splitpanes.spec.js

@@ -1,6 +1,6 @@
 import { expect } from 'chai'
 import { shallowMount } from '@vue/test-utils'
-import Splitpanes from '@/components/Splitpanes.vue'
+import Splitpanes from '@/components/Splitpanes'
 
 describe('Splitpanes.vue', () => {
   it('renders correctly - vertical', () => {

tests/components/Splitpanes/splitter.spec.js

@@ -1,6 +1,6 @@
 import { expect } from 'chai'
 import sinon from 'sinon'
-import splitter from '@/splitter'
+import splitter from '@/components/Splitpanes/splitter'
 
 describe('splitter.js', () => {
   afterEach(() => {

tests/components/SqlTable/Pager.spec.js

@@ -1,7 +1,7 @@
 import { expect } from 'chai'
 import sinon from 'sinon'
 import { mount } from '@vue/test-utils'
-import Pager from '@/components/Pager.vue'
+import Pager from '@/components/SqlTable/Pager'
 
 describe('Pager.vue', () => {
   afterEach(() => {

tests/db.utils.spec.js

@@ -1,34 +0,0 @@
-import { expect } from 'chai'
-import dbUtils from '@/db.utils'
-
-describe('db.utils.js', () => {
-  it('generateChunks', () => {
-    const arr = ['1', '2', '3', '4', '5']
-    const size = 2
-    const chunks = dbUtils.generateChunks(arr, size)
-    const output = []
-    for (const chunk of chunks) {
-      output.push(chunk)
-    }
-    expect(output[0]).to.eql(['1', '2'])
-    expect(output[1]).to.eql(['3', '4'])
-    expect(output[2]).to.eql(['5'])
-  })
-
-  it('getInsertStmt', () => {
-    const columns = ['id', 'name']
-    expect(dbUtils.getInsertStmt(columns))
-      .to.equal('INSERT INTO csv_import ("id", "name") VALUES (?, ?);')
-  })
-
-  it('getCreateStatement', () => {
-    const columns = ['id', 'name', 'isAdmin', 'startDate']
-    const values = [
-      [1, 'foo', true, new Date()],
-      [2, 'bar', false, new Date()]
-    ]
-    expect(dbUtils.getCreateStatement(columns, values)).to.equal(
-      'CREATE table csv_import("id" REAL, "name" TEXT, "isAdmin" INTEGER, "startDate" TEXT);'
-    )
-  })
-})

tests/lib/database/_sql.spec.js

@@ -2,14 +2,14 @@ import chai from 'chai'
 import sinon from 'sinon'
 import chaiAsPromised from 'chai-as-promised'
 import initSqlJs from 'sql.js'
-import Sql from '@/sql'
+import Sql from '@/lib/database/_sql'
 chai.use(chaiAsPromised)
 const expect = chai.expect
 chai.should()
 
 const getSQL = initSqlJs()
 
-describe('sql.js', () => {
+describe('_sql.js', () => {
   afterEach(() => {
     sinon.restore()
   })
@@ -74,8 +74,8 @@ describe('sql.js', () => {
     const progressCallback = sinon.stub()
     const progressCounterId = 1
     const sql = await Sql.build()
-    sql.import(data.columns, data.values, progressCounterId, progressCallback, 2)
-    const result = sql.exec('SELECT * from csv_import')
+    sql.import('foo', data.columns, data.values, progressCounterId, progressCallback, 2)
+    const result = sql.exec('SELECT * from foo')
     expect(result).to.have.lengthOf(1)
     expect(result[0].columns).to.eql(['id', 'name'])
     expect(result[0].values).to.have.lengthOf(4)
@@ -135,7 +135,7 @@ describe('sql.js', () => {
     expect(sql.db.db).to.equal(null)
   })
 
-  it('overwrites', async () => {
+  it('adds', async () => {
     const sql = await Sql.build()
     sql.exec(`
       CREATE TABLE test (
@@ -160,12 +160,11 @@ describe('sql.js', () => {
         [4, 'Ron Weasley']
       ]
     }
-    // rewrite the database by import
-    sql.import(data.columns, data.values, 1, sinon.stub(), 2)
-    result = sql.exec('SELECT * from csv_import')
+    // import adds table
+    sql.import('foo', data.columns, data.values, 1, sinon.stub(), 2)
+    result = sql.exec('SELECT * from foo')
     expect(result[0].values).to.have.lengthOf(4)
-
-    // test table oesn't exists anymore: the db was overwritten
-    expect(() => { sql.exec('SELECT * from test') }).to.throw('no such table: test')
+    result = sql.exec('SELECT * from test')
+    expect(result[0].values).to.have.lengthOf(2)
   })
 })

tests/lib/database/_statements.spec.js

@@ -0,0 +1,62 @@
+import { expect } from 'chai'
+import stmts from '@/lib/database/_statements'
+
+describe('_statements.js', () => {
+  it('generateChunks', () => {
+    const arr = ['1', '2', '3', '4', '5']
+    const size = 2
+    const chunks = stmts.generateChunks(arr, size)
+    const output = []
+    for (const chunk of chunks) {
+      output.push(chunk)
+    }
+    expect(output[0]).to.eql(['1', '2'])
+    expect(output[1]).to.eql(['3', '4'])
+    expect(output[2]).to.eql(['5'])
+  })
+
+  it('getInsertStmt', () => {
+    const columns = ['id', 'name']
+    expect(stmts.getInsertStmt('foo', columns))
+      .to.equal('INSERT INTO "foo" ("id", "name") VALUES (?, ?);')
+  })
+
+  it('getCreateStatement', () => {
+    const columns = ['id', 'name', 'isAdmin', 'startDate']
+    const values = [
+      [1, 'foo', true, new Date()],
+      [2, 'bar', false, new Date()]
+    ]
+    expect(stmts.getCreateStatement('foo', columns, values)).to.equal(
+      'CREATE table "foo"("id" REAL, "name" TEXT, "isAdmin" INTEGER, "startDate" TEXT);'
+    )
+  })
+
+  it('getColumns', () => {
+    const sql = `CREATE TABLE test (
+      col1,
+      col2 integer,
+      col3 decimal(5,2),
+      col4 varchar(30)
+    )`
+    expect(stmts.getColumns(sql)).to.eql([
+      { name: 'col1', type: 'N/A' },
+      { name: 'col2', type: 'integer' },
+      { name: 'col3', type: 'decimal(5, 2)' },
+      { name: 'col4', type: 'varchar(30)' }
+    ])
+  })
+
+  it('getColumns with virtual table', async () => {
+    const sql = `
+      CREATE VIRTUAL TABLE test_virtual USING fts4(
+        col1, col2,
+        notindexed=col1, notindexed=col2,
+        tokenize=unicode61 "tokenchars=.+#")
+    `
+    expect(stmts.getColumns(sql)).to.eql([
+      { name: 'col1', type: 'N/A' },
+      { name: 'col2', type: 'N/A' }
+    ])
+  })
+})

tests/lib/database/database.spec.js

@@ -2,8 +2,8 @@ import chai from 'chai'
 import sinon from 'sinon'
 import chaiAsPromised from 'chai-as-promised'
 import initSqlJs from 'sql.js'
-import database from '@/database'
-import fu from '@/file.utils'
+import database from '@/lib/database'
+import fu from '@/lib/utils/fileIo'
 
 chai.use(chaiAsPromised)
 const expect = chai.expect
@@ -27,58 +27,39 @@ describe('database.js', () => {
     const tempDb = new SQL.Database()
     tempDb.run(`CREATE TABLE test (
       col1,
-      col2 integer,
-      col3 decimal(5,2),
-      col4 varchar(30)
+      col2 integer
     )`)
 
     const data = tempDb.export()
     const buffer = new Blob([data])
     buffer.name = 'foo.sqlite'
 
-    const { schema, dbName } = await db.loadDb(buffer)
-    expect(dbName).to.equal('foo')
+    sinon.spy(db, 'refreshSchema')
+
+    await db.loadDb(buffer)
+    await db.refreshSchema.returnValues[0]
+    const schema = db.schema
+    expect(db.dbName).to.equal('foo')
     expect(schema).to.have.lengthOf(1)
     expect(schema[0].name).to.equal('test')
+
     expect(schema[0].columns[0].name).to.equal('col1')
     expect(schema[0].columns[0].type).to.equal('N/A')
+
     expect(schema[0].columns[1].name).to.equal('col2')
     expect(schema[0].columns[1].type).to.equal('integer')
-    expect(schema[0].columns[2].name).to.equal('col3')
-    expect(schema[0].columns[2].type).to.equal('decimal(5, 2)')
-    expect(schema[0].columns[3].name).to.equal('col4')
-    expect(schema[0].columns[3].type).to.equal('varchar(30)')
   })
 
-  it('creates schema with virtual table', async () => {
-    const SQL = await getSQL
-    const tempDb = new SQL.Database()
-    tempDb.run(`
-      CREATE VIRTUAL TABLE test_virtual USING fts4(
-        col1, col2,
-        notindexed=col1, notindexed=col2,
-        tokenize=unicode61 "tokenchars=.+#")
-    `)
+  it('creates empty db with name database', async () => {
+    sinon.spy(db, 'refreshSchema')
 
-    const data = tempDb.export()
-    const buffer = new Blob([data])
-    buffer.name = 'foo.sqlite'
-
-    const { schema } = await db.loadDb(buffer)
-    expect(schema[0].name).to.equal('test_virtual')
-    expect(schema[0].columns[0].name).to.equal('col1')
-    expect(schema[0].columns[0].type).to.equal('N/A')
-    expect(schema[0].columns[1].name).to.equal('col2')
-    expect(schema[0].columns[1].type).to.equal('N/A')
+    await db.loadDb()
+    await db.refreshSchema.returnValues[0]
+    expect(db.dbName).to.equal('database')
   })
 
   it('loadDb throws errors', async () => {
-    const SQL = await getSQL
-    const tempDb = new SQL.Database()
-    tempDb.run('CREATE TABLE test (col1, col2)')
-
-    const data = tempDb.export()
-    const buffer = new Blob([data])
+    const buffer = new Blob([])
     buffer.name = 'foo.sqlite'
 
     sinon.stub(db.pw, 'postMessage').resolves({ error: new Error('foo') })
@@ -136,7 +117,7 @@ describe('database.js', () => {
     await expect(db.execute('SELECT * from foo')).to.be.rejectedWith(/^no such table: foo$/)
   })
 
-  it('creates db', async () => {
+  it('adds table from csv', async () => {
     const data = {
       columns: ['id', 'name', 'faculty'],
       values: [
@@ -146,16 +127,19 @@ describe('database.js', () => {
     }
     const progressHandler = sinon.spy()
     const progressCounterId = db.createProgressCounter(progressHandler)
-    const { dbName, schema } = await db.createDb('foo', data, progressCounterId)
-    expect(dbName).to.equal('foo')
-    expect(schema).to.have.lengthOf(1)
-    expect(schema[0].name).to.equal('csv_import')
-    expect(schema[0].columns).to.have.lengthOf(3)
-    expect(schema[0].columns[0]).to.eql({ name: 'id', type: 'real' })
-    expect(schema[0].columns[1]).to.eql({ name: 'name', type: 'text' })
-    expect(schema[0].columns[2]).to.eql({ name: 'faculty', type: 'text' })
+    sinon.spy(db, 'refreshSchema')
 
-    const result = await db.execute('SELECT * from csv_import')
+    await db.addTableFromCsv('foo', data, progressCounterId)
+    await db.refreshSchema.returnValues[0]
+    expect(db.dbName).to.equal('database')
+    expect(db.schema).to.have.lengthOf(1)
+    expect(db.schema[0].name).to.equal('foo')
+    expect(db.schema[0].columns).to.have.lengthOf(3)
+    expect(db.schema[0].columns[0]).to.eql({ name: 'id', type: 'real' })
+    expect(db.schema[0].columns[1]).to.eql({ name: 'name', type: 'text' })
+    expect(db.schema[0].columns[2]).to.eql({ name: 'faculty', type: 'text' })
+
+    const result = await db.execute('SELECT * from foo')
     expect(result.columns).to.eql(data.columns)
     expect(result.values).to.eql(data.values)
 
@@ -164,7 +148,7 @@ describe('database.js', () => {
     expect(progressHandler.secondCall.calledWith(100)).to.equal(true)
   })
 
-  it('createDb throws errors', async () => {
+  it('addTableFromCsv throws errors', async () => {
     const data = {
       columns: ['id', 'name'],
       values: [
@@ -174,7 +158,7 @@ describe('database.js', () => {
     }
     const progressHandler = sinon.stub()
     const progressCounterId = db.createProgressCounter(progressHandler)
-    await expect(db.createDb('foo', data, progressCounterId))
+    await expect(db.addTableFromCsv('foo', data, progressCounterId))
       .to.be.rejectedWith('column index out of range')
   })
 
@@ -242,4 +226,23 @@ describe('database.js', () => {
     expect(result.values).to.have.lengthOf(1)
     expect(result.values[0]).to.eql([1, 'Harry Potter'])
   })
+
+  it('sanitizeTableName', () => {
+    let name = 'foo[]bar'
+    expect(db.sanitizeTableName(name)).to.equal('foo_bar')
+
+    name = '1 foo(01.05.2020)'
+    expect(db.sanitizeTableName(name)).to.equal('_1_foo_01_05_2020_')
+  })
+
+  it('validateTableName', async () => {
+    await db.execute('CREATE TABLE foo(id)')
+    await expect(db.validateTableName('foo')).to.be.rejectedWith('table "foo" already exists')
+    await expect(db.validateTableName('1foo'))
+      .to.be.rejectedWith("Table name can't start with a digit")
+    await expect(db.validateTableName('foo(05.08.2020)'))
+      .to.be.rejectedWith('Table name can contain only letters, digits and underscores')
+    await expect(db.validateTableName('sqlite_foo'))
+      .to.be.rejectedWith("Table name can't start with sqlite_")
+  })
 })

tests/lib/database/sqliteExtensions.spec.js

@@ -0,0 +1,238 @@
+import chai from 'chai'
+import database from '@/lib/database'
+
+const expect = chai.expect
+
+describe('SQLite extensions', function () {
+  let db
+
+  beforeEach(() => {
+    db = database.getNewDatabase()
+  })
+
+  afterEach(() => {
+    db.shutDown()
+  })
+
+  it('supports contrib trigonometric functions', async function () {
+    const actual = await db.execute(`
+      SELECT
+        abs(3.1415926 - pi())       < 0.000001,
+        abs(1 - cos(2 * pi()))      < 0.000001,
+        abs(0 - sin(pi()))          < 0.000001,
+        abs(0 - tan(0))             < 0.000001,
+        abs(0 - cot(pi() / 2))      < 0.000001,
+        abs(1 - acos(cos(1)))       < 0.000001,
+        abs(1 - asin(sin(1)))       < 0.000001,
+        abs(1 - atan(tan(1)))       < 0.000001,
+        abs(1 - cosh(0))            < 0.000001,
+        abs(0 - sinh(0))            < 0.000001,
+        abs(tanh(1) + tanh(-1))     < 0.000001,
+        abs(coth(1) + coth(-1))     < 0.000001,
+        abs(1 - acosh(cosh(1)))     < 0.000001,
+        abs(1 - asinh(sinh(1)))     < 0.000001,
+        abs(1 - atanh(tanh(1)))     < 0.000001,
+        abs(180 - degrees(pi()))    < 0.000001,
+        abs(pi() - radians(180))    < 0.000001,
+        abs(pi() / 2 - atan2(1, 0)) < 0.000001
+    `)
+    expect(actual.values).to.eql([[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]])
+  })
+
+  it('supports contrib math functions', async function () {
+    const actual = await db.execute(`
+      SELECT
+        exp(0),
+        log(exp(1)),
+        log10(10000),
+        power(2, 3),
+        sign(-10) + sign(20),
+        sqrt(square(16)),
+        ceil(-1.95) + ceil(1.95),
+        floor(-1.95) + floor(1.95)
+    `)
+    expect(actual.values).to.eql([[1, 1, 4, 8, 0, 16, 1, -1]])
+  })
+
+  it('supports contrib string functions', async function () {
+    const actual = await db.execute(`
+      SELECT
+        replicate('ab', 4),
+        charindex('ab', 'foobarabbarfoo'),
+        charindex('ab', 'foobarabbarfoo', 8),
+        leftstr('foobar', 2),
+        rightstr('foobar', 2),
+        reverse('foobar'),
+        proper('fooBar'),
+        padl('foo', 5),
+        padr('foo', 5),
+        padc('foo', 5),
+        strfilter('abcba', 'bc')
+    `)
+    expect(actual.values).to.eql([
+      ['abababab', 7, 0, 'fo', 'ar', 'raboof', 'Foobar', '  foo', 'foo  ', ' foo ', 'bcb']
+    ])
+  })
+
+  it('supports contrib aggregate functions', async function () {
+    const actual = await db.execute(`
+      WITH RECURSIVE series(x) AS (
+          SELECT 1
+        UNION ALL
+          SELECT x + 1
+          FROM series
+          WHERE x + 1 <= 12
+      )
+      SELECT
+        abs( 3.77406806 - stdev(x))    < 0.000001,
+        abs(14.24358974 - variance(x)) < 0.000001,
+        mode(x),
+        median(x),
+        lower_quartile(x),
+        upper_quartile(x)
+      FROM (
+        SELECT x
+        FROM series
+        UNION ALL
+        VALUES (1)
+      )
+    `)
+    expect(actual.values).to.eql([[1, 1, 1, 6, 3, 9]])
+  })
+
+  it('supports generate_series', async function () {
+    const actual = await db.execute(`
+      SELECT value
+      FROM generate_series(5, 20, 5)
+    `)
+    expect(actual.values).to.eql([[5], [10], [15], [20]])
+  })
+
+  it('supports transitive_closure', async function () {
+    const actual = await db.execute(`
+      CREATE TABLE node(
+      node_id   INTEGER NOT NULL PRIMARY KEY,
+      parent_id INTEGER,
+      name      VARCHAR(127),
+      FOREIGN KEY (parent_id) REFERENCES node(node_id)
+    );
+    CREATE INDEX node_parent_id_idx ON node(parent_id);
+
+    CREATE VIRTUAL TABLE node_closure USING transitive_closure(
+        tablename    = "node",
+        idcolumn     = "node_id",
+        parentcolumn = "parent_id"
+      );
+
+    INSERT INTO node VALUES
+      (1,  NULL, 'tests'),
+      (2,  1,    'lib'),
+      (3,  2,    'database'),
+      (4,  2,    'utils'),
+      (5,  2,    'storedQueries.spec.js'),
+      (6,  3,    '_sql.spec.js'),
+      (7,  3,    '_statements.spec.js'),
+      (8,  3,    'database.spec.js'),
+      (9,  3,    'sqliteExtensions.spec.js'),
+      (10, 4,    'fileIo.spec.js'),
+      (11, 4,    'time.spec.js');
+
+      SELECT name
+      FROM node
+      WHERE node_id IN (
+        SELECT nc.id
+        FROM node_closure AS nc
+        WHERE nc.root = 2 AND nc.depth = 2
+      );
+    `)
+    expect(actual.values).to.eql([
+      ['_sql.spec.js'],
+      ['_statements.spec.js'],
+      ['database.spec.js'],
+      ['sqliteExtensions.spec.js'],
+      ['fileIo.spec.js'],
+      ['time.spec.js']
+    ])
+  })
+
+  it('supports UUID functions', async function () {
+    const actual = await db.execute(`
+      SELECT
+        length(uuid()),
+        uuid_str(uuid_blob('26a8349c8a7f4cbeb519bf792c3d7ac6'))
+    `)
+    expect(actual.values).to.eql([[36, '26a8349c-8a7f-4cbe-b519-bf792c3d7ac6']])
+  })
+
+  it('supports regexp', async function () {
+    const actual = await db.execute(`
+      SELECT
+        regexp('=\\s?\\d+',  'const foo = 123; const bar = "bar"'),
+        regexpi('=\\s?\\d+', 'const foo = 123; const bar = "bar"'),
+        'const foo = 123; const bar = "bar"' REGEXP '=\\s?\\d+'
+    `)
+    expect(actual.values).to.eql([[1, 1, 1]])
+  })
+
+  it('supports pivot virtual table', async function () {
+    const actual = await db.execute(`
+      CREATE TABLE point(x REAL, y REAL, z REAL);
+      INSERT INTO point VALUES
+        (5,3,3.2),  (5,6,4.3),  (5,9,5.4),
+        (10,3,4),   (10,6,3.8), (10,9,3.6),
+        (15,3,4.8), (15,6,4),   (15,9,3.5);
+
+      CREATE VIRTUAL TABLE pivot USING pivot_vtab(
+        (SELECT y FROM point GROUP BY y),
+        (SELECT x, x FROM point GROUP BY x),
+        (SELECT z FROM point WHERE y = :y AND x = :x)
+      );
+
+      CREATE TEMPORARY TABLE surface AS
+      SELECT xt.x, p.*
+      FROM (
+        SELECT row_number() OVER () rownum, *
+        FROM pivot
+      ) p
+      JOIN (
+        SELECT row_number() OVER () rownum, x
+        FROM point
+        GROUP BY x
+      ) xt USING(rownum);
+      ALTER TABLE surface DROP COLUMN rownum;
+      SELECT * FROM surface;
+    `)
+    expect(actual.columns).to.eql(['x', 'y', '5.0', '10.0', '15.0'])
+    expect(actual.values).to.eql([
+      [5, 3, 3.2, 4, 4.8],
+      [10, 6, 4.3, 3.8, 4],
+      [15, 9, 5.4, 3.6, 3.5]
+    ])
+  })
+
+  it('supports FTS5', async function () {
+    const actual = await db.execute(`
+      CREATE VIRTUAL TABLE email USING fts5(sender, title, body, tokenize = 'porter ascii');
+
+      INSERT INTO email VALUES
+        (
+          'foo@localhost',
+          'fts3/4',
+          'FTS3 and FTS4 are SQLite virtual table modules that allows users to perform '
+          || 'full-text searches on a set of documents.'
+        ),
+        (
+          'bar@localhost',
+          'fts4',
+          'FTS5 is an SQLite virtual table module that provides full-text search '
+          || 'functionality to database applications.'
+        );
+
+      SELECT sender
+      FROM email
+      WHERE body MATCH '"full-text" NOT document'
+      ORDER BY rank;
+    `)
+    expect(actual.values).to.eql([['bar@localhost']])
+  })
+})

tests/lib/storedQueries.spec.js

@@ -1,7 +1,7 @@
 import { expect } from 'chai'
 import sinon from 'sinon'
-import storedQueries from '@/storedQueries.js'
-import fu from '@/file.utils'
+import storedQueries from '@/lib/storedQueries'
+import fu from '@/lib/utils/fileIo'
 
 describe('storedQueries.js', () => {
   beforeEach(() => {

tests/lib/utils/fileIo.spec.js

@@ -1,8 +1,8 @@
 import { expect } from 'chai'
-import fu from '@/file.utils'
+import fIo from '@/lib/utils/fileIo'
 import sinon from 'sinon'
 
-describe('file.utils.js', () => {
+describe('fileIo.js', () => {
   afterEach(() => {
     sinon.restore()
   })
@@ -15,7 +15,7 @@ describe('file.utils.js', () => {
     sinon.spy(URL, 'revokeObjectURL')
     sinon.spy(window, 'Blob')
 
-    fu.exportToFile('foo', 'foo.txt')
+    fIo.exportToFile('foo', 'foo.txt')
 
     expect(document.createElement.calledOnceWith('a')).to.equal(true)
 
@@ -40,7 +40,7 @@ describe('file.utils.js', () => {
     sinon.spy(URL, 'revokeObjectURL')
     sinon.spy(window, 'Blob')
 
-    fu.exportToFile('foo', 'foo.html', 'text/html')
+    fIo.exportToFile('foo', 'foo.html', 'text/html')
 
     expect(document.createElement.calledOnceWith('a')).to.equal(true)
 
@@ -71,7 +71,7 @@ describe('file.utils.js', () => {
 
     setTimeout(() => { spyInput.dispatchEvent(new Event('change')) })
 
-    const data = await fu.importFile()
+    const data = await fIo.importFile()
     expect(data).to.equal('foo')
     expect(document.createElement.calledOnceWith('input')).to.equal(true)
     expect(spyInput.type).to.equal('file')
@@ -82,13 +82,13 @@ describe('file.utils.js', () => {
   it('readFile', () => {
     sinon.spy(window, 'fetch')
 
-    fu.readFile('./foo.bar')
+    fIo.readFile('./foo.bar')
     expect(window.fetch.calledOnceWith('./foo.bar')).to.equal(true)
   })
 
   it('readAsArrayBuffer resolves', async () => {
     const blob = new Blob(['foo'])
-    const buffer = await fu.readAsArrayBuffer(blob)
+    const buffer = await fIo.readAsArrayBuffer(blob)
 
     const uint8Array = new Uint8Array(buffer)
     const text = new TextDecoder().decode(uint8Array)
@@ -103,6 +103,34 @@ describe('file.utils.js', () => {
     sinon.stub(window, 'FileReader').returns(r)
 
     const blob = new Blob(['foo'])
-    await expect(fu.readAsArrayBuffer(blob)).to.be.rejectedWith('Problem parsing input file.')
+    await expect(fIo.readAsArrayBuffer(blob)).to.be.rejectedWith('Problem parsing input file.')
+  })
+
+  it('isDatabase', () => {
+    let file = { type: 'application/vnd.sqlite3' }
+    expect(fIo.isDatabase(file)).to.equal(true)
+
+    file = { type: 'application/x-sqlite3' }
+    expect(fIo.isDatabase(file)).to.equal(true)
+
+    file = { type: '', name: 'test.db' }
+    expect(fIo.isDatabase(file)).to.equal(true)
+
+    file = { type: '', name: 'test.sqlite' }
+    expect(fIo.isDatabase(file)).to.equal(true)
+
+    file = { type: '', name: 'test.sqlite3' }
+    expect(fIo.isDatabase(file)).to.equal(true)
+
+    file = { type: '', name: 'test.csv' }
+    expect(fIo.isDatabase(file)).to.equal(false)
+
+    file = { type: 'text', name: 'test.db' }
+    expect(fIo.isDatabase(file)).to.equal(false)
+  })
+
+  it('getFileName', () => {
+    expect(fIo.getFileName({ name: 'foo.csv' })).to.equal('foo')
+    expect(fIo.getFileName({ name: 'foo.bar.db' })).to.equal('foo.bar')
   })
 })