Use lokijs instead of nedb for marker database

package.json

@@ -87,6 +87,7 @@
     "emoji-mart-vue": "^2.6.6",
     "i18next": "^21.3.3",
     "lodash": "^4.17.21",
+    "lokijs": "^1.5.12",
     "megalodon": "3.6.7",
     "minimist": "^1.2.5",
     "moment": "^2.29.1",
@@ -125,6 +126,7 @@
     "@types/i18next": "^13.0.0",
     "@types/jest": "27.0.2",
     "@types/lodash": "^4.14.176",
+    "@types/lokijs": "^1.5.7",
     "@types/nedb": "^1.8.12",
     "@types/node": "^16.11.6",
     "@types/parse-link-header": "^1.0.0",

src/main/database.ts

@@ -0,0 +1,22 @@
+import Loki from 'lokijs'
+
+const newDB = (file: string): Promise<Loki> => {
+  return new Promise(resolve => {
+    const databaseInitializer = () => {
+      let markers = db.getCollection('markers')
+      if (markers === null) {
+        markers = db.addCollection('markers')
+      }
+      resolve(db)
+    }
+
+    const db = new Loki(file, {
+      autoload: true,
+      autosave: true,
+      autosaveInterval: 4000,
+      autoloadCallback: databaseInitializer
+    })
+  })
+}
+
+export default newDB

src/main/index.ts

@@ -55,6 +55,7 @@ import { EnabledTimelines } from '~/src/types/enabledTimelines'
 import { Menu as MenuPreferences } from '~/src/types/preference'
 import { LocalMarker } from '~/src/types/localMarker'
 import Marker from './marker'
+import newDB from './database'
 
 /**
  * Context menu
@@ -141,12 +142,9 @@ unreadNotification.initialize().catch((err: Error) => log.error(err))
 
 const preferencesDBPath = process.env.NODE_ENV === 'production' ? userData + './db/preferences.json' : 'preferences.json'
 
-const markerDBPath = process.env.NODE_ENV === 'production' ? userData + '/db/marker.db' : 'marker.db'
+const lokiDatabasePath = process.env.NODE_ENV === 'production' ? userData + '/db/lokiDatabase.db' : 'lokiDatabase.db'
-const markerDB = new Datastore({
+
-  filename: markerDBPath,
+let markerRepo: Marker | null = null
-  autoload: true
-})
-const markerRepo = new Marker(markerDB)
 
 /**
  * Cache path
@@ -257,6 +255,11 @@ const updateDockMenu = async (accountsChange: Array<MenuItemConstructorOptions>)
 }
 
 async function createWindow() {
+  /**
+     DB
+  */
+  const lokiDB = await newDB(lokiDatabasePath)
+  markerRepo = new Marker(lokiDB)
   /**
    * List accounts
    */
@@ -1160,11 +1163,17 @@ ipcMain.handle('update-spellchecker-languages', async (_: IpcMainInvokeEvent, la
 
 // marker
 ipcMain.handle('get-home-marker', async (_: IpcMainInvokeEvent, ownerID: string) => {
+  if (markerRepo === null) {
+    return null
+  }
   const marker = await markerRepo.get(ownerID, 'home')
   return marker
 })
 
 ipcMain.handle('get-notifications-marker', async (_: IpcMainInvokeEvent, ownerID: string) => {
+  if (markerRepo === null) {
+    return null
+  }
   const marker = await markerRepo.get(ownerID, 'notifications')
   return marker
 })
@@ -1175,6 +1184,9 @@ ipcMain.on(
     if (marker.owner_id === null || marker.owner_id === undefined || marker.owner_id === '') {
       return null
     }
+    if (markerRepo === null) {
+      return null
+    }
     const res = await markerRepo.save(marker)
     return res
   }

src/main/marker.ts

@@ -1,21 +1,22 @@
 import { isEmpty } from 'lodash'
-import Datastore from 'nedb'
+import Loki, { Collection } from 'lokijs'
 import { LocalMarker } from '~/src/types/localMarker'
 
 export default class Marker {
-  private db: Datastore
+  private markers: Collection<any>
 
-  constructor(db: Datastore) {
+  constructor(db: Loki) {
-    this.db = db
+    this.markers = db.getCollection('markers')
-    this.db.persistence.setAutocompactionInterval(60000) // milliseconds
   }
 
   private insert(marker: LocalMarker): Promise<LocalMarker> {
     return new Promise((resolve, reject) => {
-      this.db.insert(marker, (err, doc) => {
+      try {
-        if (err) return reject(err)
+        const doc: LocalMarker = this.markers.insert(marker)
         resolve(doc)
-      })
+      } catch (err) {
+        reject(err)
+      }
     })
   }
 
@@ -23,18 +24,20 @@ export default class Marker {
     // @ts-ignore
     return new Promise((resolve, reject) => {
       // eslint-disable-line no-unused-vars
-      this.db.update(
+      try {
+        this.markers.findAndUpdate(
           {
-          owner_id: marker.owner_id,
+            owner_id: { $eq: marker.owner_id },
-          timeline: marker.timeline
+            timeline: { $eq: marker.timeline }
           },
-        { $set: marker },
+          (item: LocalMarker) => {
-        { multi: false },
+            item.last_read_id = marker.last_read_id
-        err => {
-          if (err) return reject(err)
-          return this.get(marker.owner_id, marker.timeline)
           }
         )
+        return this.get(marker.owner_id, marker.timeline)
+      } catch (err) {
+        reject(err)
+      }
     })
   }
 
@@ -47,21 +50,28 @@ export default class Marker {
 
   public async get(owner_id: string, timeline: 'home' | 'notifications'): Promise<LocalMarker | null> {
     return new Promise((resolve, reject) => {
-      this.db.findOne<LocalMarker>({ owner_id: owner_id, timeline: timeline }, (err, doc) => {
+      try {
-        if (err) return reject(err)
+        const doc: LocalMarker | null = this.markers.findOne({
-        resolve(doc)
+          owner_id: { $eq: owner_id },
+          timeline: { $eq: timeline }
         })
+        resolve(doc)
+      } catch (err) {
+        reject(err)
+      }
     })
   }
 
   public async list(owner_id: string): Promise<Array<LocalMarker>> {
     return new Promise((resolve, reject) => {
-      this.db
+      try {
-        .find<LocalMarker>({ owner_id: owner_id })
+        const docs: Array<LocalMarker> = this.markers.find({
-        .exec((err, docs) => {
+          owner_id: { $eq: owner_id }
-          if (err) return reject(err)
+        })
         resolve(docs)
-        })
+      } catch (err) {
+        reject(err)
+      }
     })
   }
 }

yarn.lock

@@ -1592,6 +1592,11 @@
   resolved "https://registry.yarnpkg.com/@types/lodash/-/lodash-4.14.176.tgz#641150fc1cda36fbfa329de603bbb175d7ee20c0"
   integrity sha512-xZmuPTa3rlZoIbtDUyJKZQimJV3bxCmzMIO2c9Pz9afyDro6kr7R79GwcB6mRhuoPmV2p1Vb66WOJH7F886WKQ==
 
+"@types/lokijs@^1.5.7":
+  version "1.5.7"
+  resolved "https://registry.yarnpkg.com/@types/lokijs/-/lokijs-1.5.7.tgz#5eb4b189149681a89acad6dc8adb088f6025feb3"
+  integrity sha512-WEFQLgO3u2Wa7yFybqkTZYumqF1GcHvUwx8Tv2SUHy2qpnIainMMoLmEUGdjhPNp/v5pyC9e91fSMC3mkxBIDw==
+
 "@types/minimatch@*":
   version "3.0.3"
   resolved "https://registry.yarnpkg.com/@types/minimatch/-/minimatch-3.0.3.tgz#3dca0e3f33b200fc7d1139c0cd96c1268cadfd9d"
@@ -7920,6 +7925,11 @@ loglevel@^1.6.8:
   resolved "https://registry.yarnpkg.com/loglevel/-/loglevel-1.7.1.tgz#005fde2f5e6e47068f935ff28573e125ef72f197"
   integrity sha512-Hesni4s5UkWkwCGJMQGAh71PaLUmKFM60dHvq0zi/vDhhrzuk+4GgNbTXJ12YYQJn6ZKBDNIjYcuQGKudvqrIw==
 
+lokijs@^1.5.12:
+  version "1.5.12"
+  resolved "https://registry.yarnpkg.com/lokijs/-/lokijs-1.5.12.tgz#cb55b37009bdf09ee7952a6adddd555b893653a0"
+  integrity sha512-Q5ALD6JiS6xAUWCwX3taQmgwxyveCtIIuL08+ml0nHwT3k0S/GIFJN+Hd38b1qYIMaE5X++iqsqWVksz7SYW+Q==
+
 longest@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/longest/-/longest-1.0.1.tgz#30a0b2da38f73770e8294a0d22e6625ed77d0097"