some test

package.json

@@ -68,11 +68,13 @@
     "node-ssdp": "^4.0.1",
     "pouchdb-adapter-leveldb": "^7.3.0",
     "pouchdb-node": "^7.3.0",
+    "pouchdb-upsert": "^2.2.0",
     "qrcode": "^1.5.0",
     "react": "^18.0.0",
     "react-dom": "^18.0.0",
     "run-script-os": "^1.1.6",
     "source-map-support": "^0.5.21",
+    "ts-md5": "^1.2.11",
     "v8-compile-cache": "^2.3.0",
     "wallpaper": "5.0.1",
     "ws": "^8.5.0",

src/main/base/browserwindow.ts

@@ -1185,6 +1185,8 @@ export class BrowserWindow {
 
 
         ipcMain.handle("scanLibrary", async (event, folders) => {
+            const oldmetadatalist = await LocalFiles.sendOldLibrary()
+            BrowserWindow.win.webContents.send('getUpdatedLocalList', oldmetadatalist);
             const metadatalist = await LocalFiles.scanLibrary()
             BrowserWindow.win.webContents.send('getUpdatedLocalList', metadatalist);
         })

src/main/providers/local/db/index.ts

@@ -1,8 +1,12 @@
 import * as PouchDB from 'pouchdb-node';
-
+import {join} from 'path';
+import {app} from "electron";
+PouchDB.plugin(require('pouchdb-upsert'));
 export class ProviderDB {
     public static db: any = null
-    static async init() {
-        // ProviderDB.db = new PouchDB('tracks')
+    static init() {
+        if (ProviderDB.db == null){
+            ProviderDB.db = new PouchDB(join(app.getPath('userData'), 'tracksdb'))
+        }
     }
 }

src/main/providers/local/index.ts

@@ -1,16 +1,26 @@
-// import { ProviderDB } from "./db";
+import { ProviderDB } from "./db";
 import * as path from 'path';
 const { readdir } = require('fs').promises;
 import { utils } from '../../base/utils';
 import * as mm from 'music-metadata';
+import {Md5} from 'ts-md5/dist/md5';
 
 export class LocalFiles {
     static localSongs: any = [];
     static localSongsArts: any = [];
-    // public static DB = ProviderDB.db;
-
+    public static DB = ProviderDB.db;
 
+    static async sendOldLibrary() {
+        ProviderDB.init()
+        let u = (await ProviderDB.db.allDocs({include_docs: true,
+            attachments: true})).rows.map((item: any)=>{return item.doc})
+        this.localSongs = u; 
+        console.log('sdadad', u.length)  
+        return u;
+    }
+    
     static async scanLibrary() {
+        ProviderDB.init()
         let folders = utils.getStoreValue("libraryPrefs.localPaths")
         if (folders == null || folders.length == null || folders.length == 0) folders = ["D:\\Music"]
         console.log('folders', folders)
@@ -30,16 +40,18 @@ export class LocalFiles {
         for (var audio of audiofiles) {
             try {
                 const metadata = await mm.parseFile(audio);
+                let lochash = Md5.hashStr(audio) ?? numid;
                 if (metadata != null) {
                     let form = {
-                        "id": "ciderlocal" + numid,
+                        "id": "ciderlocal" + lochash,
+                        "_id": "ciderlocal" + lochash,
                         "type": "podcast-episodes",
                         "href": audio,
                         "attributes": {
                             "artwork": {
                                 "width": 3000,
                                 "height": 3000,
-                                "url": "/ciderlocalart/" + "ciderlocal" + numid,
+                                "url": "/ciderlocalart/" + "ciderlocal" + lochash,
                             },
                             "topics": [],
                             "url": "",
@@ -74,10 +86,11 @@ export class LocalFiles {
                         }
                     };
                     metadatalistart.push({
-                        id: "ciderlocal" + numid,
+                        id: "ciderlocal" + lochash,
                         url: metadata.common.picture != undefined ? metadata.common.picture[0].data.toString('base64') : "",
                     })
                     numid += 1;
+                    ProviderDB.db.putIfNotExists(form)
                     metadatalist.push(form)
                 }
             } catch (e) { }