change code structure

src/lib/storedQueries.js

@@ -0,0 +1,96 @@
+import { nanoid } from 'nanoid'
+import fu from '@/lib/utils/fileIo'
+
+export default {
+  getStoredQueries () {
+    return JSON.parse(localStorage.getItem('myQueries')) || []
+  },
+
+  duplicateQuery (baseQuery) {
+    const newQuery = JSON.parse(JSON.stringify(baseQuery))
+    newQuery.name = newQuery.name + ' Copy'
+    newQuery.id = nanoid()
+    newQuery.createdAt = new Date()
+    delete newQuery.isPredefined
+
+    return newQuery
+  },
+
+  isTabNeedName (queryTab) {
+    const isFromScratch = !queryTab.initName
+    return queryTab.isPredefined || isFromScratch
+  },
+
+  save (queryTab, newName) {
+    const value = {
+      id: queryTab.isPredefined ? nanoid() : queryTab.id,
+      query: queryTab.query,
+      chart: queryTab.$refs.chart.getChartStateForSave(),
+      name: newName || queryTab.initName
+    }
+
+    // Get queries from local storage
+    const myQueries = this.getStoredQueries()
+
+    // Set createdAt
+    if (newName) {
+      value.createdAt = new Date()
+    } else {
+      var queryIndex = myQueries.findIndex(oldQuery => oldQuery.id === queryTab.id)
+      value.createdAt = myQueries[queryIndex].createdAt
+    }
+
+    // Insert in queries list
+    if (newName) {
+      myQueries.push(value)
+    } else {
+      myQueries[queryIndex] = value
+    }
+
+    // Save to local storage
+    this.updateStorage(myQueries)
+    return value
+  },
+
+  updateStorage (value) {
+    localStorage.setItem('myQueries', JSON.stringify(value))
+  },
+
+  serialiseQueries (queryList) {
+    const preparedData = JSON.parse(JSON.stringify(queryList))
+    preparedData.forEach(query => delete query.isPredefined)
+    return JSON.stringify(preparedData, null, 4)
+  },
+
+  deserialiseQueries (str) {
+    let queryList = JSON.parse(str)
+    // Turn data into array if they are not
+    if (!Array.isArray(queryList)) {
+      queryList = [queryList]
+    }
+
+    // Generate new ids if they are the same as existing queries
+    queryList.forEach(query => {
+      const allQueriesIds = this.getStoredQueries().map(query => query.id)
+      if (allQueriesIds.includes(query.id)) {
+        query.id = nanoid()
+      }
+    })
+
+    return queryList
+  },
+
+  importQueries () {
+    return fu.importFile()
+      .then(data => {
+        return this.deserialiseQueries(data)
+      })
+  },
+
+  readPredefinedQueries () {
+    return fu.readFile('./queries.json')
+      .then(resp => {
+        return resp.json()
+      })
+  }
+}