feat: 将 OpenCode 服务管理抽取为独立模块

- 创建 electron/services/opencodeService.ts 独立服务模块
- 支持健康检测(每10秒)、自动重启(最多3次)
- 随软件生命周期自动启动/停止

electron/services/opencodeService.ts

@@ -0,0 +1,176 @@
+import { spawn, ChildProcess } from 'child_process';
+import log from 'electron-log';
+
+const OPENCODE_PORT = 4096;
+const HEALTH_CHECK_INTERVAL = 10000;
+const MAX_RESTART_ATTEMPTS = 3;
+const HEALTH_CHECK_TIMEOUT = 2000;
+
+class OpenCodeService {
+  private process: ChildProcess | null = null;
+  private healthCheckTimer: NodeJS.Timeout | null = null;
+  private restartAttempts = 0;
+  private _isRunning = false;
+
+  get port(): number {
+    return OPENCODE_PORT;
+  }
+
+  isRunning(): boolean {
+    return this._isRunning;
+  }
+
+  getStatus(): { running: boolean; port: number; restartAttempts: number } {
+    return {
+      running: this._isRunning,
+      port: this.port,
+      restartAttempts: this.restartAttempts,
+    };
+  }
+
+  private getAuthHeaders(): Record<string, string> {
+    const password = 'xc_opencode_password';
+    const encoded = Buffer.from(`:${password}`).toString('base64');
+    return {
+      'Authorization': `Basic ${encoded}`,
+    };
+  }
+
+  private async checkHealth(): Promise<boolean> {
+    try {
+      const response = await fetch(`http://127.0.0.1:${this.port}/session`, {
+        method: 'GET',
+        headers: this.getAuthHeaders(),
+        signal: AbortSignal.timeout(HEALTH_CHECK_TIMEOUT),
+      });
+      return response.ok;
+    } catch (error) {
+      log.warn('[OpenCodeService] Health check failed:', error);
+      return false;
+    }
+  }
+
+  private async restart(): Promise<void> {
+    if (this.restartAttempts >= MAX_RESTART_ATTEMPTS) {
+      log.error('[OpenCodeService] Max restart attempts reached, giving up');
+      this._isRunning = false;
+      return;
+    }
+
+    this.restartAttempts++;
+    log.info(`[OpenCodeService] Attempting restart (${this.restartAttempts}/${MAX_RESTART_ATTEMPTS})...`);
+
+    await this.stop();
+    await this.start();
+  }
+
+  private startHealthCheck(): void {
+    if (this.healthCheckTimer) {
+      clearInterval(this.healthCheckTimer);
+    }
+
+    this.healthCheckTimer = setInterval(async () => {
+      const isHealthy = await this.checkHealth();
+      if (!isHealthy && this._isRunning) {
+        log.warn('[OpenCodeService] Health check failed, attempting restart...');
+        await this.restart();
+      }
+    }, HEALTH_CHECK_INTERVAL);
+  }
+
+  async start(): Promise<{ success: boolean; error?: string }> {
+    if (this._isRunning && this.process) {
+      log.info('[OpenCodeService] Already running');
+      return { success: true };
+    }
+
+    try {
+      log.info('[OpenCodeService] Starting OpenCode server...');
+
+      this.process = spawn('opencode', ['serve'], {
+        stdio: 'pipe',
+        shell: true,
+        detached: false,
+      });
+
+      this.process.stdout?.on('data', (data) => {
+        log.info(`[OpenCode] ${data}`);
+      });
+
+      this.process.stderr?.on('data', (data) => {
+        log.error(`[OpenCode error] ${data}`);
+      });
+
+      this.process.on('error', (err) => {
+        log.error('[OpenCodeService] Process error:', err);
+        this._isRunning = false;
+        this.process = null;
+      });
+
+      this.process.on('exit', (code) => {
+        log.info(`[OpenCodeService] Process exited with code ${code}`);
+        this._isRunning = false;
+        this.process = null;
+      });
+
+      await new Promise<void>((resolve) => {
+        setTimeout(resolve, 2000);
+      });
+
+      const isHealthy = await this.checkHealth();
+      if (!isHealthy) {
+        log.warn('[OpenCodeService] Server started but health check failed, waiting longer...');
+        await new Promise<void>((resolve) => setTimeout(resolve, 3000));
+      }
+
+      this._isRunning = true;
+      this.restartAttempts = 0;
+      this.startHealthCheck();
+
+      log.info(`[OpenCodeService] Started successfully on port ${this.port}`);
+      return { success: true };
+    } catch (error: any) {
+      log.error('[OpenCodeService] Failed to start:', error);
+      this._isRunning = false;
+      return { success: false, error: error.message };
+    }
+  }
+
+  async stop(): Promise<{ success: boolean; error?: string }> {
+    if (this.healthCheckTimer) {
+      clearInterval(this.healthCheckTimer);
+      this.healthCheckTimer = null;
+    }
+
+    if (!this.process) {
+      log.info('[OpenCodeService] Not running');
+      return { success: true };
+    }
+
+    try {
+      log.info('[OpenCodeService] Stopping...');
+
+      this.process.kill('SIGTERM');
+      
+      await new Promise<void>((resolve) => {
+        setTimeout(resolve, 1000);
+      });
+
+      if (this.process && !this.process.killed) {
+        this.process.kill('SIGKILL');
+      }
+
+      this.process = null;
+      this._isRunning = false;
+      this.restartAttempts = 0;
+
+      log.info('[OpenCodeService] Stopped');
+      return { success: true };
+    } catch (error: any) {
+      log.error('[OpenCodeService] Failed to stop:', error);
+      return { success: false, error: error.message };
+    }
+  }
+}
+
+export const opencodeService = new OpenCodeService();