/**
 * MetonaAI Desktop — Electron 主进程入口
 *
 * 启动流程（按架构规范强制顺序）：
 * 1. 初始化日志系统 + 加载 .env 环境变量（P0-4: 应用内配置优先，env 作为回退）
 * 2. 选择/创建工作空间 → 校验必需文件（缺失自动创建）
 * 3. 连接 SQLite → 执行 schema 迁移 → 加载配置
 * 4. 初始化 Provider Adapter（P2-10: AgentEngineManager 管理每会话独立引擎）
 * 5. 加载磁盘文件 → 构建 System Prompt
 * 6. 注册内置工具 + 连接 MCP Servers（P1-11: 等待连接完成再广播就绪）
 * 7. 启动 React UI → Agent 就绪
 *
 * @see docs/MetonaAI-Desktop 架构与交互设计.html — 启动流程
 * @see docs/MetonaAI-Desktop UI UX 设计集成方案.html — 窗口管理
 */

import 'dotenv/config';
import { app, shell, Menu, BrowserWindow, dialog } from 'electron';
import { join } from 'path';
import { existsSync, readFileSync, writeFileSync } from 'fs';
import { electronApp, optimizer } from '@electron-toolkit/utils';
import log from 'electron-log';
import { DatabaseService } from './services/database.service';
import { SessionService } from './services/session.service';
import { ConfigService } from './services/config.service';
import { GlobalConfigService } from './services/global-config.service';
import { WorkspaceService } from './services/workspace.service';
import { AuditService } from './services/audit.service';
import { SessionRecorder } from './services/session-recorder.service';
import { TrayManager } from './services/tray-manager.service';
import { WindowManager } from './services/window-manager.service';
import { MCPManager } from './services/mcp-manager.service';
import { SessionSummaryService } from './services/session-summary.service';
import { AgentEngineManager } from './services/agent-engine-manager.service';
import { ContextBuilder } from './harness/prompts/context-builder';
import { MemoryManager } from './harness/memory/manager';
import { MemoryConsolidator } from './harness/memory/consolidator';
import { registerAllIPCHandlers } from './ipc';
import type { ToolsReadyRef } from './ipc';
import { ToolRegistry } from './harness/tools/registry';
import { DeepSeekAdapter } from './harness/adapters/deepseek.adapter';
import { AgnesAdapter } from './harness/adapters/agnes-ai.adapter';
import { MimoAdapter } from './harness/adapters/mimo.adapter';
import { OllamaAdapter } from './harness/adapters/ollama.adapter';
import { OpenAIAdapter } from './harness/adapters/openai.adapter';
import { AnthropicAdapter } from './harness/adapters/anthropic.adapter';
import type { IMetonaProviderAdapter } from './harness/types/metona-adapter';
import {
  ReadFileTool,
  WriteFileTool,
  ListDirectoryTool,
  SearchFilesTool,
  WebSearchTool,
  WebFetchTool,
  MemoryStoreTool,
  MemorySearchTool,
  RunCommandTool,
  WebBrowserTool,
  cleanupBrowser,
  DelegateTaskTool,
  FileEditorTool,
  CodeSearchTool,
  TaskManagerTool,
  DiffViewerTool,
  GitStatusTool,
  GitDiffTool,
  GitLogTool,
  GitCommitTool,
  LintCodeTool,
  RunTestsTool,
  ProjectInfoTool,
  HttpRequestTool,
  ThinkTool,
  ViewImageTool,
  DeleteFileTool,
  FileMoveTool,
  FileInfoTool,
} from './harness/tools/built-in';
import {
  AuditLogHook,
  MemoryTriggerHook,
  PermissionCheckHook,
  RateLimitHook,
  SecurityScanHook,
} from './harness/hooks';
import { ConfirmationHook } from './harness/hooks/confirmation-hook';
import { PolicyEngine } from './harness/sandbox/permissions';
import { SandboxManager } from './harness/sandbox/sandbox';
import { PromptInjectionDefender } from './harness/security/prompt-injection-defense';
import { OutputValidator } from './harness/verification/output-validator';
import { TaskOrchestrator } from './harness/orchestration/orchestrator';
import { HealthChecker, SLOMonitor } from './utils/slo';

// ===== 步骤 1: 初始化日志系统（SYS 层）=====
log.transports.file.level = 'info';
log.transports.console.level = 'debug';

// ===== 工作空间路径独立存储（解决 DB 在 workspace 内的鸡生蛋问题）=====
const WORKSPACE_CONFIG_FILE = join(app.getPath('userData'), 'workspace-config.json');

function readWorkspacePathFromFile(): string | null {
  try {
    if (existsSync(WORKSPACE_CONFIG_FILE)) {
      const data = JSON.parse(readFileSync(WORKSPACE_CONFIG_FILE, 'utf-8'));
      return data.workspacePath ?? null;
    }
  } catch {
    // 忽略读取错误
  }
  return null;
}

function writeWorkspacePathToFile(workspacePath: string): void {
  try {
    writeFileSync(WORKSPACE_CONFIG_FILE, JSON.stringify({ workspacePath }, null, 2), 'utf-8');
  } catch (err) {
    log.error('Failed to write workspace config file:', err);
  }
}

export { readWorkspacePathFromFile, writeWorkspacePathToFile };

let databaseService: DatabaseService | null = null;
let trayManager: TrayManager | null = null;
let windowManager: WindowManager | null = null;

/**
 * P0-4: 环境变量回退映射（应用内配置优先，.env 值作为未配置时的默认）
 * 与 .env.example 保持一致。
 */
const ENV_FALLBACK: Record<string, { apiKey?: string; baseURL?: string }> = {
  deepseek: { apiKey: 'DEEPSEEK_API_KEY', baseURL: 'DEEPSEEK_BASE_URL' },
  agnes: { apiKey: 'AGNES_API_KEY', baseURL: 'AGNES_BASE_URL' },
  mimo: { apiKey: 'MIMO_API_KEY', baseURL: 'MIMO_BASE_URL' },
  ollama: { baseURL: 'OLLAMA_BASE_URL' },
  openai: { apiKey: 'OPENAI_API_KEY', baseURL: 'OPENAI_BASE_URL' },
  anthropic: { apiKey: 'ANTHROPIC_API_KEY', baseURL: 'ANTHROPIC_BASE_URL' },
};

/**
 * F-7 修复: 已知 Provider 白名单
 * 此前 createAdapter 的 switch default 静默落入 DeepSeekAdapter —— provider 配置
 * 拼写错误（如 "deepsek"）不报错，而是以空配置静默失败。显式校验后未知值
 * 走"配置不完整"路径，用户可在设置中看到明确提示。
 */
const KNOWN_PROVIDERS = new Set(['deepseek', 'agnes', 'mimo', 'ollama', 'openai', 'anthropic']);

async function initialize(): Promise<void> {
  log.info('MetonaAI Desktop starting...');
  electronApp.setAppUserModelId('com.metona.ai-desktop');

  // 移除原生菜单栏
  Menu.setApplicationMenu(null);

  app.on('browser-window-created', (_, window) => {
    optimizer.watchWindowShortcuts(window);
  });

  // ===== 步骤 2: 工作空间（优先从独立配置文件读取路径）=====
  const savedWorkspacePath = readWorkspacePathFromFile();
  const workspaceService = new WorkspaceService(savedWorkspacePath ?? undefined);
  const workspaceInfo = workspaceService.initialize();
  // 持久化工作空间路径（供下次启动读取）
  if (savedWorkspacePath !== workspaceInfo.path) {
    writeWorkspacePathToFile(workspaceInfo.path);
  }
  log.info(
    `Workspace: ${workspaceInfo.path} (missing: ${workspaceInfo.missingFiles.join(', ') || 'none'})`,
  );

  // ===== 步骤 3: SQLite =====
  databaseService = new DatabaseService(workspaceInfo.path);
  databaseService.initialize();
  const db = databaseService.getDB();

  // v0.3.17: 初始化全局配置层（跨工作空间共享 LLM/Agent/onboarding 等机器级配置）
  const globalConfigService = new GlobalConfigService();
  globalConfigService.initialize();

  const sessionService = new SessionService(() => db);
  const configService = new ConfigService(() => db);
  // 注入全局配置层：读取时回退到全局 JSON，写入时双写
  configService.setGlobalConfig(globalConfigService);

  // v0.3.17 迁移: 首次启用全局配置层时，把工作空间 DB 中的全局配置同步到全局 JSON
  // 幂等设计：migrateFromWorkspaceDB 仅写入全局层不存在的 key
  const configRows = db.prepare('SELECT key, value FROM app_config').all() as Array<{
    key: string;
    value: string;
  }>;
  const workspaceConfig: Record<string, unknown> = {};
  for (const row of configRows) {
    try {
      workspaceConfig[row.key] = JSON.parse(row.value);
    } catch {
      workspaceConfig[row.key] = row.value;
    }
  }
  const migratedCount = globalConfigService.migrateFromWorkspaceDB(workspaceConfig);
  if (migratedCount > 0) {
    log.info(
      `[MIGRATION] Migrated ${migratedCount} global config keys from workspace DB to global layer`,
    );
  }

  // ===== 日志服务 =====
  const auditService = new AuditService(() => db);
  const sessionRecorder = new SessionRecorder(workspaceInfo.path);

  // ===== 记忆系统 =====
  const memoryManager = new MemoryManager(() => db);
  memoryManager.initialize();

  // ===== 步骤 4: Provider Adapter 工厂（P2-10: 每引擎独立实例） =====
  // P0-4: 配置缺失时回退读取 .env 环境变量（应用内配置优先）
  const createAdapter = (): IMetonaProviderAdapter | null => {
    const provider = configService.get<string>('llm.provider') ?? '';
    const model = configService.get<string>('llm.model') ?? '';
    const env = ENV_FALLBACK[provider] ?? {};
    const apiKey =
      configService.get<string>('llm.apiKey') || (env.apiKey ? process.env[env.apiKey] : '') || '';
    const baseURL =
      configService.get<string>('llm.baseURL') ||
      (env.baseURL ? process.env[env.baseURL] : '') ||
      '';

    // 配置不完整时返回 null（不抛异常，让应用能启动到 Onboarding）
    if (!provider || !baseURL || !model) {
      log.warn('LLM not fully configured. Please set provider, baseURL, and model in Settings.');
      return null;
    }

    // F-7 修复: 未知 Provider 显式拒绝（此前 switch default 静默落入 DeepSeekAdapter）
    if (!KNOWN_PROVIDERS.has(provider)) {
      log.warn(
        `Unknown LLM provider "${provider}". Supported: ${[...KNOWN_PROVIDERS].join(', ')}.`,
      );
      return null;
    }

    if (!apiKey && provider !== 'ollama') {
      log.warn(`API key is required for provider "${provider}". Please set it in Settings.`);
      return null;
    }

    // 读取 Provider 对应的 contextWindow 配置（Ollama 不使用此字段）
    const contextWindow =
      provider !== 'ollama'
        ? (configService.get<number>(`${provider}.contextWindow`) ?? undefined)
        : undefined;

    const adapterConfig = { provider, baseURL, apiKey, defaultModel: model, contextWindow };
    switch (provider) {
      case 'agnes':
        return new AgnesAdapter(adapterConfig);
      case 'mimo':
        return new MimoAdapter(adapterConfig);
      case 'ollama':
        return new OllamaAdapter(adapterConfig);
      case 'openai':
        return new OpenAIAdapter(adapterConfig);
      case 'anthropic':
        return new AnthropicAdapter(adapterConfig);
      default:
        return new DeepSeekAdapter(adapterConfig);
    }
  };

  // 配置未就绪时的 fallback adapter — getContextWindow 返回安全值，send/sendStream 会报错但前端可见
  const FALLBACK_ADAPTER = new DeepSeekAdapter({
    provider: '',
    baseURL: '',
    apiKey: '',
    defaultModel: '',
    contextWindow: 4096,
  });

  // ===== 步骤 5: 工作空间文件 + System Prompt =====
  const contextBuilder = new ContextBuilder();

  // ===== F-8 接通: 此前为死配置的安全/日志开关真实消费 =====
  // fail-secure: 仅显式 false 才关闭 —— 配置值异常（空串/null/类型错误）时保持默认开启
  const promptInjectionEnabled =
    configService.get<boolean>('security.promptInjectionDefense') !== false;
  const auditEnabled = configService.get<boolean>('logging.auditEnabled') !== false;
  const traceEnabled = configService.get<boolean>('logging.traceEnabled') !== false;
  // SessionRecorder 录制总开关（false 时不写 TRACE JSONL 文件）
  sessionRecorder.setEnabled(traceEnabled);

  // ===== v0.2.0: 安全模块（必须在工具注册之前） =====
  const policyEngine = new PolicyEngine();
  const sandboxManager = new SandboxManager({
    allowedPaths: [workspaceInfo.path],
    networkPolicy: 'allowlist',
  });
  const promptDefender = new PromptInjectionDefender();
  const outputValidator = new OutputValidator();

  // v0.2.0: ConfirmationHook（提前创建，mainWindow 创建后再注入）
  const confirmationHook = new ConfirmationHook(null, configService);

  // ===== 步骤 6: 注册内置工具 =====
  const toolRegistry = new ToolRegistry();
  toolRegistry.registerBuiltin(new ReadFileTool());
  toolRegistry.registerBuiltin(new WriteFileTool());
  toolRegistry.registerBuiltin(new ListDirectoryTool());
  toolRegistry.registerBuiltin(new SearchFilesTool());
  toolRegistry.registerBuiltin(new DeleteFileTool());
  toolRegistry.registerBuiltin(new FileMoveTool());
  toolRegistry.registerBuiltin(new FileInfoTool());
  toolRegistry.registerBuiltin(new FileEditorTool());
  toolRegistry.registerBuiltin(new CodeSearchTool());
  toolRegistry.registerBuiltin(new DiffViewerTool());

  // WebFetchTool 先于 WebSearchTool 构造，注入为依赖
  const webFetchTool = new WebFetchTool();
  toolRegistry.registerBuiltin(webFetchTool);
  toolRegistry.registerBuiltin(new WebSearchTool(configService, webFetchTool));

  toolRegistry.registerBuiltin(new MemoryStoreTool(memoryManager));
  toolRegistry.registerBuiltin(new MemorySearchTool(memoryManager));

  // v0.2.0: RunCommandTool 注入 SandboxManager
  const runCommandTool = new RunCommandTool();
  runCommandTool.setSandboxManager(sandboxManager);
  toolRegistry.registerBuiltin(runCommandTool);

  // P2（v0.3.13）: 注入 onTaskChanged 回调，工具写入后广播 IPC 事件给所有窗口
  toolRegistry.registerBuiltin(
    new TaskManagerTool(
      () => db,
      (sessionId) => {
        for (const win of BrowserWindow.getAllWindows()) {
          win.webContents.send('task:changed', sessionId);
        }
      },
    ),
  );

  toolRegistry.registerBuiltin(new WebBrowserTool());

  // v0.3.1: Git 工具集（4 个）+ 开发工具集（3 个）+ 独立工具（3 个）
  toolRegistry.registerBuiltin(new GitStatusTool());
  toolRegistry.registerBuiltin(new GitDiffTool());
  toolRegistry.registerBuiltin(new GitLogTool());
  toolRegistry.registerBuiltin(new GitCommitTool());
  toolRegistry.registerBuiltin(new LintCodeTool());
  toolRegistry.registerBuiltin(new RunTestsTool());
  toolRegistry.registerBuiltin(new ProjectInfoTool());
  toolRegistry.registerBuiltin(new HttpRequestTool());
  toolRegistry.registerBuiltin(new ThinkTool());
  toolRegistry.registerBuiltin(new ViewImageTool());

  // ===== MCP Manager =====
  const mcpManager = new MCPManager(() => db, toolRegistry);

  // ===== Hooks（P0-2: SecurityScanHook 前置，对工具结果做间接注入防护） =====
  // F-8 接通: SecurityScanHook / AuditLogHook 按 security.promptInjectionDefense
  // 与 logging.auditEnabled 配置构建（此前两配置为死配置，hook 无条件挂载）
  const preToolHooks = [
    new PermissionCheckHook(policyEngine),
    new RateLimitHook(20),
    confirmationHook,
  ];
  const postToolHooks = [
    ...(promptInjectionEnabled ? [new SecurityScanHook(promptDefender)] : []),
    ...(auditEnabled ? [new AuditLogHook(auditService)] : []),
    new MemoryTriggerHook(memoryManager),
  ];
  if (!promptInjectionEnabled) {
    log.warn('[Security] promptInjectionDefense disabled by config — injection scanning off');
  }
  if (!auditEnabled) {
    log.warn('[Logging] auditEnabled disabled by config — tool audit logging off');
  }

  // ===== P2-10: Agent Engine Manager（每会话独立引擎，替代全局单引擎） =====
  const buildAdapter = (): IMetonaProviderAdapter => createAdapter() ?? FALLBACK_ADAPTER;
  const ollamaNumCtx = configService.get<number>('ollama.numCtx');
  const agentEngineManager = new AgentEngineManager({
    buildAdapter,
    baseConfig: {
      maxIterations: configService.get<number>('agent.maxIterations') ?? 20,
      totalTimeoutMs: configService.get<number>('agent.totalTimeoutMs') ?? 600_000,
      contextLength: ollamaNumCtx ?? undefined,
      contextWindow: buildAdapter().getContextWindow(),
      thinkingEnabled: configService.get<boolean>('agent.enableThinking') ?? true,
      thinkingEffort:
        (configService.get<string>('agent.thinkingEffort') as
          | 'low'
          | 'medium'
          | 'high'
          | 'max'
          | null) ?? 'high',
      toolExecutionTimeoutMs: configService.get<number>('agent.toolExecutionTimeoutMs') ?? 120_000,
      // F-8 接通: llm.temperature / llm.maxTokens 此前为死配置（引擎硬编码 0.0/63488）
      temperature: configService.get<number>('llm.temperature') ?? 0.0,
      maxTokens: configService.get<number>('llm.maxTokens') ?? 63488,
    },
    toolRegistry,
    preToolHooks,
    postToolHooks,
  });
  agentEngineManager.setWorkspacePath(workspaceInfo.path);

  // ===== P1: 故障转移 Provider（主 Provider 不可用时切换） =====
  const buildFallbackAdapter = (): IMetonaProviderAdapter | null => {
    const provider = configService.get<string>('llm.fallbackProvider');
    const model = configService.get<string>('llm.fallbackModel');
    if (!provider || !model) return null;
    const env = ENV_FALLBACK[provider] ?? {};
    const apiKey =
      configService.get<string>('llm.fallbackApiKey') ||
      (env.apiKey ? process.env[env.apiKey] : '') ||
      '';
    const baseURL =
      configService.get<string>('llm.fallbackBaseURL') ||
      (env.baseURL ? process.env[env.baseURL] : '') ||
      '';
    if (!baseURL) return null;
    if (!apiKey && provider !== 'ollama') return null;
    // F-7 修复: 故障转移 Provider 同样做白名单校验（未知值禁用故障转移而非静默降级）
    if (!KNOWN_PROVIDERS.has(provider)) {
      log.warn(
        `[Fallback] Unknown provider "${provider}". Supported: ${[...KNOWN_PROVIDERS].join(', ')}. Failover disabled.`,
      );
      return null;
    }
    const contextWindow =
      provider !== 'ollama'
        ? (configService.get<number>(`${provider}.contextWindow`) ?? undefined)
        : undefined;
    const cfg = { provider, baseURL, apiKey, defaultModel: model, contextWindow };
    switch (provider) {
      case 'agnes':
        return new AgnesAdapter(cfg);
      case 'mimo':
        return new MimoAdapter(cfg);
      case 'ollama':
        return new OllamaAdapter(cfg);
      case 'openai':
        return new OpenAIAdapter(cfg);
      case 'anthropic':
        return new AnthropicAdapter(cfg);
      default:
        return new DeepSeekAdapter(cfg);
    }
  };
  agentEngineManager.setFallbackAdapter(buildFallbackAdapter());

  // ===== P1-11: MCP 初始化等待所有连接完成后再广播 tools:ready（修复工具未注册即广播的窗口） =====
  // v0.3.18: toolsReadyRef 供 tools:isReady 查询（解决事件竞态）
  // v0.5.3: MCP 工具集合运行中变更（添加/断开/启停 server）→ 同步所有已存在引擎。
  // 此前仅启动期 setToolsAll；运行中增删后已打开会话的引擎拿不到新工具
  // （或持有失效定义，调用报 Unknown tool）。懒创建引擎由 createEngine
  // 实时拉取（v0.5.2），此回调覆盖既有引擎。
  mcpManager.setOnToolsChanged(() => {
    agentEngineManager.setToolsAll(toolRegistry.listTools());
  });
  const toolsReadyRef: ToolsReadyRef = { ready: false, toolCount: 0 };
  mcpManager
    .initialize()
    .then(() => {
      agentEngineManager.setToolsAll(toolRegistry.listTools());
      log.info('[MCP] Tools registered and synced to all engines');
      toolsReadyRef.ready = true;
      toolsReadyRef.toolCount = toolRegistry.size;
      // 广播工具就绪事件给所有窗口
      for (const win of BrowserWindow.getAllWindows()) {
        win.webContents.send('tools:ready', { toolCount: toolRegistry.size });
      }
    })
    .catch((err) => {
      log.warn('MCP Manager initialization error:', err);
      // 即使 MCP 失败，内置工具已就绪，仍广播 ready 让前端启用发送
      toolsReadyRef.ready = true;
      toolsReadyRef.toolCount = toolRegistry.size;
      for (const win of BrowserWindow.getAllWindows()) {
        win.webContents.send('tools:ready', { toolCount: toolRegistry.size });
      }
    });

  // ===== Memory Consolidator（会话结束 AI 提取重要记忆到 MEMORY.md） =====
  const memoryConsolidator = new MemoryConsolidator(buildAdapter(), workspaceService);
  // v0.3.18: 注入 MemoryManager，实现 DB 记忆与 MEMORY.md 双轨交叉
  memoryConsolidator.setMemoryManager(memoryManager);

  // ===== P2-11: 会话摘要分层上下文服务 =====
  const sessionSummaryService = new SessionSummaryService(
    () => db,
    sessionService,
    () => buildAdapter(),
  );

  // ===== Task Orchestrator（子任务委派，P2-10: 适配 EngineProvider） =====
  const orchestrator = new TaskOrchestrator(
    agentEngineManager,
    toolRegistry,
    preToolHooks,
    postToolHooks,
    {
      thinkingEnabled: configService.get<boolean>('agent.enableThinking') ?? true,
      thinkingEffort:
        (configService.get<string>('agent.thinkingEffort') as
          | 'low'
          | 'medium'
          | 'high'
          | 'max'
          | null) ?? 'high',
      contextLength: ollamaNumCtx ?? undefined,
      contextWindow: buildAdapter().getContextWindow(),
    },
  );
  toolRegistry.registerBuiltin(new DelegateTaskTool(orchestrator));
  // 重新设置工具列表，包含新注册的 delegate_task
  agentEngineManager.setToolsAll(toolRegistry.listTools());
  // 在所有工具（包括 DelegateTaskTool）注册完成后，刷新 ConfirmationHook 的工具定义缓存
  confirmationHook.setToolDefs(toolRegistry.listAllTools());
  log.info(`Registered ${toolRegistry.size} built-in tools`);

  // ===== 热重载 Adapter 回调（设置变更时触发） =====
  let lastProvider = configService.get<string>('llm.provider') ?? '';
  // v0.3.1 + P1: configSig 覆盖主/备 Provider 全部 LLM 字段
  const buildConfigSig = () => {
    const provider = configService.get<string>('llm.provider') ?? '';
    return JSON.stringify({
      provider,
      model: configService.get<string>('llm.model') ?? '',
      apiKey: configService.get<string>('llm.apiKey') ?? '',
      baseURL: configService.get<string>('llm.baseURL') ?? '',
      fallbackProvider: configService.get<string>('llm.fallbackProvider') ?? '',
      fallbackModel: configService.get<string>('llm.fallbackModel') ?? '',
      fallbackApiKey: configService.get<string>('llm.fallbackApiKey') ?? '',
      fallbackBaseURL: configService.get<string>('llm.fallbackBaseURL') ?? '',
      contextWindow:
        provider === 'ollama'
          ? configService.get<number>('ollama.numCtx')
          : configService.get<number>(`${provider}.contextWindow`),
    });
  };
  let lastConfigSig = buildConfigSig();
  const reloadAdapter = (): boolean => {
    try {
      const currentSig = buildConfigSig();

      // 配置未变化 — 幂等返回成功，不重建 adapter，不发通知
      if (currentSig === lastConfigSig) {
        return true;
      }

      // 配置变化 — 校验新配置可构建 adapter
      const probe = createAdapter();
      if (!probe) {
        log.warn(
          '[CONFIG] Cannot create adapter: LLM config incomplete (provider/apiKey/baseURL/model)',
        );
        const wins = BrowserWindow.getAllWindows();
        for (const win of wins) {
          win.webContents.send('toast:show', {
            type: 'warning',
            message: 'LLM 配置不完整，请在设置中补全 Provider、API Key、Base URL 和 Model',
          });
        }
        return false;
      }

      // P2-10: 重建所有引擎的 adapter（工厂闭包读取最新配置）
      agentEngineManager.refreshAdapters();
      agentEngineManager.setFallbackAdapter(buildFallbackAdapter());
      memoryConsolidator.setAdapter(agentEngineManager.getAdapter());

      // Provider 切换时同步 contextLength 和 contextWindow
      const provider = configService.get<string>('llm.provider') ?? '';
      if (provider === 'ollama') {
        const numCtx = configService.get<number>('ollama.numCtx');
        agentEngineManager.updateConfigAll({
          contextLength: numCtx ?? undefined,
          contextWindow: agentEngineManager.getAdapter().getContextWindow(),
        });
      } else {
        agentEngineManager.updateConfigAll({
          contextLength: undefined,
          contextWindow: agentEngineManager.getAdapter().getContextWindow(),
        });
      }
      log.info(`[CONFIG] Adapter reloaded: provider=${provider}`);
      // 仅在 Provider 真正变化时通知渲染进程
      if (lastProvider && lastProvider !== provider) {
        for (const win of BrowserWindow.getAllWindows()) {
          win.webContents.send('agent:providerSwitched', {
            from: lastProvider,
            to: provider,
            reason: 'config_changed',
            sessionId: '',
          });
          win.webContents.send('toast:show', {
            type: 'success',
            message: `Provider 已切换: ${lastProvider} → ${provider}`,
          });
        }
      }
      lastProvider = provider;
      lastConfigSig = currentSig;
      return true;
    } catch (err) {
      log.error(`[CONFIG] Failed to reload adapter: ${(err as Error).message}`);
      for (const win of BrowserWindow.getAllWindows()) {
        win.webContents.send('toast:show', {
          type: 'error',
          message: `Provider 切换失败: ${(err as Error).message}`,
        });
      }
      return false;
    }
  };

  // ===== 窗口管理 =====
  windowManager = new WindowManager();
  // 局部 const 捕获：闭包内 TS 无法对模块级可空变量做流收窄
  const wm = windowManager;
  // F-4 修复: 窗口创建收敛为单一入口 —— macOS activate / 托盘重建窗口此前不走
  // beforeLoad，导致 confirmationHook 仍指向已销毁的旧窗口，所有需确认工具被
  // "no main window available" 永久阻断。此闭包保证任何重建路径都完成
  // setMainWindow + IPC 注册（registerAllIPCHandlers 有防重入标志，重复调用安全）。
  const createMainWindow = (): BrowserWindow =>
    wm.createWindow({
      id: 'main',
      workspacePath: workspaceInfo.path,
      title: 'MetonaAI Desktop',
      // P2-11 修复: 在 loadURL 之前注册 IPC handler，消除渲染进程加载与 IPC 注册的时序窗口
      beforeLoad: (win) => {
        confirmationHook.setMainWindow(win);
        registerAllIPCHandlers({
          mainWindow: win,
          sessionService,
          configService,
          workspaceService,
          contextBuilder,
          agentEngineManager,
          toolRegistry,
          auditService,
          sessionRecorder,
          memoryManager,
          mcpManager,
          reloadAdapter,
          promptInjectionDefender: promptDefender,
          outputValidator,
          confirmationHook,
          memoryConsolidator,
          orchestrator,
          sessionSummaryService,
          toolsReadyRef,
        });
      },
    });
  const mainWindow = createMainWindow();

  // ===== 系统托盘 =====
  const resourcesPath = join(__dirname, '../../assets');
  trayManager = new TrayManager(resourcesPath);
  trayManager.initialize(mainWindow);

  // ===== 全局快捷键 =====
  windowManager.registerGlobalShortcuts();

  // ===== Agent 状态同步到托盘（P2-10: 监听 manager 聚合事件） =====
  agentEngineManager.on(
    'stateChange',
    (data: { previous?: string; current?: string; state?: string }) => {
      const statusMap: Record<string, 'idle' | 'thinking' | 'executing' | 'error'> = {
        INIT: 'idle',
        THINKING: 'thinking',
        PARSING: 'thinking',
        EXECUTING: 'executing',
        OBSERVING: 'thinking',
        REFLECTING: 'thinking',
        COMPRESSING: 'thinking',
        TERMINATED: 'idle',
      };
      const stateValue = (data.current || data.state) ?? '';
      trayManager?.setStatus(statusMap[stateValue] ?? 'idle');
    },
  );

  // ===== Agent 完成时发送系统通知 =====
  agentEngineManager.on('complete', (data: { sessionId: string; durationMs: number }) => {
    trayManager?.sendNotification(
      'MetonaAI — 任务完成',
      `Agent 已完成任务 (${(data.durationMs / 1000).toFixed(1)}s)`,
      () => windowManager?.focusWindow(),
    );
  });

  // ===== P1-12: SLO 健康监控接入（原为死代码，现真实运行） =====
  const healthChecker = new HealthChecker(
    () => db,
    join(workspaceInfo.path, '.metona', 'agent.db'),
  );
  const sloMonitor = new SLOMonitor();
  agentEngineManager.on('complete', (data: { durationMs: number; terminationReason?: string }) => {
    sloMonitor.recordRequest(data.durationMs, data.terminationReason === 'completed');
  });
  const healthTimer = setInterval(async () => {
    try {
      const report = await healthChecker.check();
      if (!report.healthy) {
        const failed = report.checks
          .filter((c) => !c.healthy)
          .map((c) => c.name)
          .join(', ');
        log.warn(`[Health] Unhealthy checks: ${failed}`);
        trayManager?.setStatus('error');
      } else {
        // 恢复 idle（运行中状态会被后续 stateChange 覆盖）
        trayManager?.setStatus('idle');
      }
      const slo = sloMonitor.getStatus();
      if (slo.violated) {
        log.warn(
          `[SLO] Burn rate ${slo.burnRate.toFixed(2)} exceeds budget (errorRate=${(slo.errorRate * 100).toFixed(1)}%, ` +
            `P95=${slo.percentiles['P95'] ?? 0}ms, ${slo.totalRequests} requests)`,
        );
      }
    } catch (err) {
      log.warn('[Health] Check failed:', err);
    }
  }, 60_000);
  healthTimer.unref?.();

  // ===== 应用生命周期 =====
  app.on('window-all-closed', () => {
    // macOS: 保持应用运行（托盘模式）
  });

  app.on('activate', () => {
    if (windowManager && windowManager.count === 0) {
      // F-4 修复: 重建窗口走统一入口（beforeLoad 补 confirmationHook/IPC），
      // 并把托盘引用重新绑定到新窗口（否则托盘点击指向已销毁窗口）
      const win = createMainWindow();
      trayManager?.rebindWindow(win);
    } else {
      windowManager?.focusWindow();
    }
  });

  // M-13 修复: before-quit 回调改为同步 + event.preventDefault() 确保异步清理完成
  app.on('before-quit', (event) => {
    // 标记为正在退出，允许窗口关闭
    (global as Record<string, unknown>).isQuitting = true;
    TrayManager.markQuitting();
    clearInterval(healthTimer);
    windowManager?.unregisterGlobalShortcuts();
    trayManager?.destroy();
    windowManager?.closeAll();

    // 防止重复触发（macOS before-quit 可能触发多次）
    if ((global as Record<string, unknown>).shutdownInProgress === true) {
      return;
    }
    (global as Record<string, unknown>).shutdownInProgress = true;

    event.preventDefault();
    // v0.3.18 修复: 超时从 5 秒延长到 40 秒，以容纳 consolidate 的 35 秒等待
    const shutdownTimeout = setTimeout(() => {
      log.warn('[Shutdown] Timeout reached, forcing exit');
      if (databaseService) {
        databaseService.close();
        databaseService = null;
      }
      app.exit(0);
    }, 40_000);

    (async () => {
      try {
        await mcpManager.shutdown();
      } catch (err) {
        log.error('[Shutdown] MCP shutdown failed:', err);
      }
      cleanupBrowser();

      // v0.3.18 修复: 等待进行中的记忆固化任务完成，避免应用退出导致记忆丢失
      if (memoryConsolidator.isRunning()) {
        log.info('[Shutdown] Waiting for memory consolidation to complete...');
        const completed = await memoryConsolidator.waitForCompletion(35_000);
        if (!completed) {
          log.warn('[Shutdown] Memory consolidation timed out, proceeding with exit');
        } else {
          log.info('[Shutdown] Memory consolidation completed');
        }
      }

      if (databaseService) {
        databaseService.close();
        databaseService = null;
      }
      clearTimeout(shutdownTimeout);
      app.exit(0);
    })().catch((err) => {
      log.error('[Shutdown] Async cleanup failed:', err);
      clearTimeout(shutdownTimeout);
      if (databaseService) {
        try {
          databaseService.close();
        } catch {
          /* ignore */
        }
        databaseService = null;
      }
      app.exit(1);
    });
  });

  // ===== 应用日志级别配置 =====
  const logLevel = configService.get<string>('logging.level') as
    | 'error'
    | 'warn'
    | 'info'
    | 'debug'
    | 'verbose'
    | 'silly'
    | null;
  if (logLevel) {
    log.transports.file.level = logLevel;
    log.transports.console.level = logLevel;
    log.info(`Log level applied: ${logLevel}`);
  }

  // ===== 恢复工具启用/禁用状态 =====
  for (const toolDef of toolRegistry.listAllTools()) {
    const stored = configService.get<boolean>(`tools.${toolDef.name}.enabled`);
    if (stored === false) {
      toolRegistry.setToolEnabled(toolDef.name, false);
      log.info(`Tool restored as disabled: ${toolDef.name}`);
    }
  }

  log.info(
    `MetonaAI Desktop initialized [Provider: ${configService.get<string>('llm.provider') ?? 'none'}, Model: ${configService.get<string>('llm.model') ?? 'none'}, Tools: ${toolRegistry.size}]`,
  );
}

// v0.5.0: 启动链路异常兜底 — DB 损坏/工作空间不可写等初始化失败时，
// 原实现会静默挂起（渲染进程白屏且无任何用户可见错误）。
// 兜底策略：记录日志 + 弹出系统错误对话框 + 退出（exit 1）
app
  .whenReady()
  .then(initialize)
  .catch((err) => {
    log.error('[Startup] Initialization failed:', err);
    try {
      dialog.showErrorBox(
        'MetonaAI Desktop 启动失败',
        `初始化过程中发生错误，应用即将退出。\n\n${(err as Error)?.message ?? String(err)}\n\n` +
          '可能原因：工作空间目录不可写、数据库文件损坏。\n' +
          '可尝试在设置中切换工作空间路径后重新启动。',
      );
    } catch {
      // showErrorBox 失败（极端环境）时仅保留日志
    }
    app.exit(1);
  });

app.on('web-contents-created', (_, contents) => {
  // C-8 修复: 全局 web-contents 监听器也校验 URL 协议
  contents.setWindowOpenHandler(({ url }) => {
    try {
      const parsed = new URL(url);
      if (parsed.protocol === 'http:' || parsed.protocol === 'https:') {
        shell.openExternal(url);
      } else {
        log.warn(`[Main] Blocked window.open with unsafe protocol: ${parsed.protocol}`);
      }
    } catch {
      log.warn(`[Main] Blocked window.open with invalid URL: ${url.slice(0, 100)}`);
    }
    return { action: 'deny' };
  });
});