fix: 修复关键逻辑错误

- 修复 store 初始化的异步问题：构造函数中的异步方法现在正确等待
- 修复配置切换时删除原文件的严重 bug：使用 copyFile 替代 rename 避免文件丢失
- 简化代码实现，移除过度设计的部分

src/main/index.ts

@@ -62,12 +62,12 @@ app.on("window-all-closed", () => {
 });
 
 // IPC handlers
-ipcMain.handle("getProviders", () => {
-  return store.get("providers", {} as Record<string, Provider>);
+ipcMain.handle("getProviders", async () => {
+  return await store.get("providers", {} as Record<string, Provider>);
 });
 
-ipcMain.handle("getCurrentProvider", () => {
-  return store.get("current", "");
+ipcMain.handle("getCurrentProvider", async () => {
+  return await store.get("current", "");
 });
 
 ipcMain.handle("addProvider", async (_, provider: Provider) => {
@@ -79,7 +79,7 @@ ipcMain.handle("addProvider", async (_, provider: Provider) => {
     }
 
     // 2. 更新应用配置
-    const providers = store.get("providers", {} as Record<string, Provider>);
+    const providers = await store.get("providers", {} as Record<string, Provider>);
     providers[provider.id] = provider;
     await store.set("providers", providers);
 
@@ -92,7 +92,7 @@ ipcMain.handle("addProvider", async (_, provider: Provider) => {
 
 ipcMain.handle("deleteProvider", async (_, id: string) => {
   try {
-    const providers = store.get("providers", {} as Record<string, Provider>);
+    const providers = await store.get("providers", {} as Record<string, Provider>);
     const provider = providers[id];
 
     // 1. 删除供应商配置文件
@@ -107,7 +107,7 @@ ipcMain.handle("deleteProvider", async (_, id: string) => {
     await store.set("providers", providers);
 
     // 3. 如果删除的是当前供应商，清空当前选择
-    const currentProviderId = store.get("current", "");
+    const currentProviderId = await store.get("current", "");
     if (currentProviderId === id) {
       await store.set("current", "");
     }
@@ -121,8 +121,8 @@ ipcMain.handle("deleteProvider", async (_, id: string) => {
 
 ipcMain.handle("updateProvider", async (_, provider: Provider) => {
   try {
-    const providers = store.get("providers", {} as Record<string, Provider>);
-    const currentProviderId = store.get("current", "");
+    const providers = await store.get("providers", {} as Record<string, Provider>);
+    const currentProviderId = await store.get("current", "");
     const oldProvider = providers[provider.id];
 
     // 1. 如果名字发生变化，需要重命名配置文件
@@ -181,9 +181,9 @@ ipcMain.handle("updateProvider", async (_, provider: Provider) => {
 
 ipcMain.handle("switchProvider", async (_, providerId: string) => {
   try {
-    const providers = store.get("providers", {} as Record<string, Provider>);
+    const providers = await store.get("providers", {} as Record<string, Provider>);
     const provider = providers[providerId];
-    const currentProviderId = store.get("current", "");
+    const currentProviderId = await store.get("current", "");
 
     if (!provider) {
       console.error(`供应商不存在: ${providerId}`);
@@ -214,7 +214,7 @@ ipcMain.handle("importCurrentConfigAsDefault", async () => {
 
     if (result.success && result.provider) {
       // 将默认供应商添加到store中
-      const providers = store.get("providers", {} as Record<string, Provider>);
+      const providers = await store.get("providers", {} as Record<string, Provider>);
       providers[result.provider.id] = result.provider;
       await store.set("providers", providers);
       

src/main/services.ts

@@ -75,7 +75,7 @@ export async function fileExists(filePath: string): Promise<boolean> {
 }
 
 /**
- * 切换供应商配置（基于文件重命名）
+ * 切换供应商配置（基于文件复制）
  */
 export async function switchProvider(
   provider: Provider,
@@ -104,21 +104,14 @@ export async function switchProvider(
           currentProviderId,
           currentProvider.name
         );
-        await fs.rename(settingsPath, currentProviderPath);
+        // 使用复制而不是重命名，避免删除原文件
+        await fs.copyFile(settingsPath, currentProviderPath);
         console.log(`已备份当前供应商配置: ${currentProvider.name}`);
-      } else {
-        // 如果没有当前供应商ID，创建临时备份
-        const backupPath = path.join(
-          configDir,
-          `settings-backup-${Date.now()}.json`
-        );
-        await fs.rename(settingsPath, backupPath);
-        console.log(`已备份当前配置到: ${backupPath}`);
       }
     }
 
-    // 2. 将目标供应商配置重命名为settings.json
-    await fs.rename(newSettingsPath, settingsPath);
+    // 2. 复制新配置到settings.json（保留原文件）
+    await fs.copyFile(newSettingsPath, settingsPath);
 
     console.log(`成功切换到供应商: ${provider.name}`);
     return true;

src/main/store.ts

@@ -7,11 +7,13 @@ export class SimpleStore {
   private configPath: string
   private configDir: string
   private data: AppConfig = { providers: {}, current: '' }
+  private initPromise: Promise<void>
 
   constructor() {
     this.configDir = path.join(os.homedir(), '.cc-switch')
     this.configPath = path.join(this.configDir, 'config.json')
-    this.loadData()
+    // 立即开始加载，但不阻塞构造函数
+    this.initPromise = this.loadData()
   }
 
   private async loadData(): Promise<void> {
@@ -36,12 +38,14 @@ export class SimpleStore {
     }
   }
 
-  get<T>(key: keyof AppConfig, defaultValue?: T): T {
+  async get<T>(key: keyof AppConfig, defaultValue?: T): Promise<T> {
+    await this.initPromise // 等待初始化完成
     const value = this.data[key] as T
     return value !== undefined ? value : (defaultValue as T)
   }
 
   async set<K extends keyof AppConfig>(key: K, value: AppConfig[K]): Promise<void> {
+    await this.initPromise // 等待初始化完成
     this.data[key] = value
     await this.saveData()
   }