feat: initialize database in app startup and enhance DbService

- Added an init method to DbService for database initialization, ensuring it is called before migrations.
- Updated the migrateDb and migrateSeed methods to check if the database is initialized, improving error handling.
- Called dbService.init() in the app's whenReady event to ensure proper database setup during startup.

src/main/data/db/DbService.ts

@@ -45,7 +45,6 @@ class DbService {
         connection: { url: pathToFileURL(path.join(app.getPath('userData'), DB_NAME)).href },
         casing: 'snake_case'
       })
-      this.isInitialized = true
       logger.info('Database connection initialized', {
         dbPath: path.join(app.getPath('userData'), DB_NAME)
       })
@@ -68,6 +67,26 @@ class DbService {
     return DbService.instance
   }
 
+  /**
+   * Initialize the database
+   * @throws {Error} If database initialization fails
+   */
+  public async init(): Promise<void> {
+    if (this.isInitialized) {
+      logger.warn('Database already initialized, do not need initialize again!')
+      return
+    }
+
+    try {
+      // Configure WAL mode on first database operation
+      await this.configureWAL()
+      this.isInitialized = true
+    } catch (error) {
+      logger.error('Database initialization failed', error as Error)
+      throw error
+    }
+  }
+
   /**
    * Configure WAL mode for better concurrency performance
    * Called once during the first database operation
@@ -93,10 +112,11 @@ class DbService {
    * @throws {Error} If migration fails
    */
   public async migrateDb(): Promise<void> {
-    try {
-      // Configure WAL mode on first database operation
-      await this.configureWAL()
+    if (!this.isInitialized) {
+      throw new Error('Database is not initialized, please call init() first!')
+    }
 
+    try {
       const migrationsFolder = this.getMigrationsFolder()
       await migrate(this.db, { migrationsFolder })
 
@@ -113,7 +133,7 @@ class DbService {
    */
   public getDb(): DbType {
     if (!this.isInitialized) {
-      throw new Error('Database is not initialized')
+      throw new Error('Database is not initialized, please call init() first!')
     }
     return this.db
   }
@@ -131,6 +151,10 @@ class DbService {
    * @throws {Error} If seed migration fails
    */
   public async migrateSeed(seedName: keyof typeof Seeding): Promise<void> {
+    if (!this.isInitialized) {
+      throw new Error('Database is not initialized, please call init() first!')
+    }
+
     try {
       const Seed = Seeding[seedName]
       if (!Seed) {

src/main/data/migration/v2/core/MigrationEngine.ts

@@ -59,6 +59,7 @@ export class MigrationEngine {
   /**
    * Check if migration is needed
    */
+  //TODO 不能仅仅判断数据库，如果是全新安装，而不是升级上来的用户，其实并不需要迁移，但是按现在的逻辑，还是会进行迁移，这不正确
   async needsMigration(): Promise<boolean> {
     const db = dbService.getDb()
     const status = await db.select().from(appStateTable).where(eq(appStateTable.key, MIGRATION_V2_STATUS)).get()

src/main/index.ts

@@ -132,6 +132,7 @@ if (!app.requestSingleInstanceLock()) {
   // Some APIs can only be used after this event occurs.
   app.whenReady().then(async () => {
     // First of all, init & migrate the database
+    await dbService.init()
     await dbService.migrateDb()
     await dbService.migrateSeed('preference')