feat(core): new async global state storage impl (#11794)

packages/frontend/core/src/modules/storage/impls/storage.ts

@@ -1,8 +1,10 @@
-import type { Memento } from '@toeverything/infra';
+import type { AsyncMemento, Memento } from '@toeverything/infra';
 import EventEmitter2 from 'eventemitter2';
+import { type IDBPDatabase, openDB } from 'idb';
 import { Observable } from 'rxjs';
 
 import type {
+  CacheStorage,
   GlobalCache,
   GlobalSessionState,
   GlobalState,
@@ -99,3 +101,131 @@ export class SessionStorageGlobalSessionState
     super(sessionStorage, 'global-session-state:');
   }
 }
+
+export class AsyncStorageMemento implements AsyncMemento {
+  // eventEmitter is used for same tab event
+  private readonly eventEmitter = new EventEmitter2();
+  // channel is used for cross-tab event
+  private readonly channel = new BroadcastChannel(this.dbName);
+  constructor(
+    private readonly dbName: string,
+    private readonly table: string
+  ) {}
+
+  private _db: IDBPDatabase<any> | null = null;
+
+  private async getDB() {
+    const { dbName, table } = this;
+    if (!this._db) {
+      this._db = await openDB(dbName, 1, {
+        upgrade(db) {
+          if (!db.objectStoreNames.contains(table)) {
+            db.createObjectStore(table, { keyPath: 'key' });
+          }
+        },
+      });
+    }
+    return this._db;
+  }
+
+  async get<T>(key: string): Promise<T | undefined> {
+    const db = await this.getDB();
+    const tx = db.transaction(this.table, 'readonly');
+    const store = tx.objectStore(this.table);
+    const result = await store.get(key);
+    return result?.value;
+  }
+
+  watch<T>(key: string): Observable<T | undefined> {
+    return new Observable<T | undefined>(subscriber => {
+      // Get initial value
+      this.get<T>(key).then(
+        value => {
+          subscriber.next(value);
+        },
+        error => {
+          console.error('Error getting initial value:', error);
+          subscriber.next(undefined);
+        }
+      );
+
+      // Listen for same tab events
+      const eventEmitterCb = (value: T) => {
+        subscriber.next(value);
+      };
+      this.eventEmitter.on(key, eventEmitterCb);
+
+      // Listen for cross-tab events
+      // eslint-disable-next-line sonarjs/no-identical-functions
+      const channelCb = (event: MessageEvent) => {
+        if (event.data.key === key) {
+          subscriber.next(event.data.value);
+        }
+      };
+      this.channel.addEventListener('message', channelCb);
+
+      return () => {
+        this.eventEmitter.off(key, eventEmitterCb);
+        this.channel.removeEventListener('message', channelCb);
+      };
+    });
+  }
+
+  async set<T>(key: string, value: T | undefined): Promise<void> {
+    const db = await this.getDB();
+    const tx = db.transaction(this.table, 'readwrite');
+    const store = tx.objectStore(this.table);
+
+    if (value === undefined) {
+      await store.delete(key);
+    } else {
+      await store.put({ key, value });
+    }
+
+    // Emit events
+    this.eventEmitter.emit(key, value);
+    this.channel.postMessage({ key, value });
+  }
+
+  async del(key: string): Promise<void> {
+    const db = await this.getDB();
+    const tx = db.transaction(this.table, 'readwrite');
+    const store = tx.objectStore(this.table);
+    await store.delete(key);
+
+    // Emit events
+    this.eventEmitter.emit(key, undefined);
+    this.channel.postMessage({ key, value: undefined });
+  }
+
+  async clear(): Promise<void> {
+    const keys = await this.keys();
+    const db = await this.getDB();
+    const tx = db.transaction(this.table, 'readwrite');
+    const store = tx.objectStore(this.table);
+    await store.clear();
+
+    // Notify observers about each deleted key
+    for (const key of keys) {
+      this.eventEmitter.emit(key, undefined);
+      this.channel.postMessage({ key, value: undefined });
+    }
+  }
+
+  async keys(): Promise<string[]> {
+    const db = await this.getDB();
+    const tx = db.transaction(this.table, 'readonly');
+    const store = tx.objectStore(this.table);
+    const allObjects = await store.getAll();
+    return allObjects.map(obj => obj.key);
+  }
+}
+
+export class IDBGlobalState
+  extends AsyncStorageMemento
+  implements CacheStorage
+{
+  constructor() {
+    super('global-storage', 'global-state');
+  }
+}

packages/frontend/core/src/modules/storage/index.ts

@@ -16,11 +16,13 @@ import { type Framework } from '@toeverything/infra';
 import { DesktopApiService } from '../desktop-api';
 import { ElectronGlobalCache, ElectronGlobalState } from './impls/electron';
 import {
+  IDBGlobalState,
   LocalStorageGlobalCache,
   LocalStorageGlobalState,
   SessionStorageGlobalSessionState,
 } from './impls/storage';
 import {
+  CacheStorage,
   GlobalCache,
   GlobalSessionState,
   GlobalState,
@@ -43,11 +45,13 @@ export const configureStorageModule = (framework: Framework) => {
 export function configureLocalStorageStateStorageImpls(framework: Framework) {
   framework.impl(GlobalCache, LocalStorageGlobalCache);
   framework.impl(GlobalState, LocalStorageGlobalState);
+  framework.impl(CacheStorage, IDBGlobalState);
 }
 
 export function configureElectronStateStorageImpls(framework: Framework) {
   framework.impl(GlobalCache, ElectronGlobalCache, [DesktopApiService]);
   framework.impl(GlobalState, ElectronGlobalState, [DesktopApiService]);
+  framework.impl(CacheStorage, IDBGlobalState);
 }
 
 export function configureCommonGlobalStorageImpls(framework: Framework) {

packages/frontend/core/src/modules/storage/providers/global.ts

@@ -1,4 +1,8 @@
-import { createIdentifier, type Memento } from '@toeverything/infra';
+import {
+  type AsyncMemento,
+  createIdentifier,
+  type Memento,
+} from '@toeverything/infra';
 
 /**
  * A memento object that stores the entire application state.
@@ -25,3 +29,7 @@ export const GlobalCache = createIdentifier<GlobalCache>('GlobalCache');
 export interface GlobalSessionState extends Memento {}
 export const GlobalSessionState =
   createIdentifier<GlobalSessionState>('GlobalSessionState');
+
+export interface CacheStorage extends AsyncMemento {}
+
+export const CacheStorage = createIdentifier<CacheStorage>('CacheStorage');