refactor MainMenu methods

src/queryTab.js

@@ -0,0 +1,58 @@
+import { nanoid } from 'nanoid'
+import store from '@/store'
+
+export default {
+  newBlankTab () {
+    return {
+      id: nanoid(),
+      name: null,
+      tempName: store.state.untitledLastIndex
+        ? `Untitled ${store.state.untitledLastIndex}`
+        : 'Untitled',
+      isUnsaved: true
+    }
+  },
+
+  isTabNeedName (queryTab) {
+    const isFromScratch = !queryTab.initName
+    return isFromScratch || queryTab.isPredefined
+  },
+
+  getDataToSave (queryTab, newName) {
+    return {
+      id: queryTab.isPredefined ? nanoid() : queryTab.id,
+      query: queryTab.query,
+      chart: queryTab.getChartSatateForSave(),
+      name: newName || queryTab.initName
+    }
+  },
+
+  save (queryTab, newName) {
+    const value = this.getDataToSave(queryTab, newName)
+    const isNeedName = this.isTabNeedName(queryTab)
+
+    // Get queries from local storage
+    let myQueries = JSON.parse(localStorage.getItem('myQueries'))
+
+    // Set createdAt
+    if (isNeedName) {
+      value.createdAt = new Date()
+    } else {
+      var queryIndex = myQueries.findIndex(oldQuery => oldQuery.id === queryTab.id)
+      value.createdAt = myQueries[queryIndex].createdAt
+    }
+
+    // Insert in queries list
+    if (!myQueries) {
+      myQueries = [value]
+    } else if (isNeedName) {
+      myQueries.push(value)
+    } else {
+      myQueries[queryIndex] = value
+    }
+
+    // Save to local storage
+    localStorage.setItem('myQueries', JSON.stringify(myQueries))
+    return value
+  }
+}