/**
 * HoloLake Desktop · Electron 主进程
 *
 * 职责：
 * 1. 创建应用窗口
 * 2. 启动知识库后端服务器（Express + Git 引擎）
 * 3. 管理应用生命周期
 *
 * 架构：
 *   Electron Main Process
 *   ├── 启动 Express 服务器（Git 引擎层，端口 3890）
 *   ├── 创建 BrowserWindow（加载 Vite 前端或打包后的 dist）
 *   └── 数据存储：~/Library/Application Support/HoloLake Era/data/
 */

import { app, BrowserWindow, shell, dialog, ipcMain, safeStorage } from 'electron';
import path from 'path';
import { spawn, ChildProcess } from 'child_process';
import fs from 'fs';
import { importKnowledgeFolder } from './folder-import.js';
import { evaluateDomainAccess } from '../../guanghu-knowledge-base/server/domain-access.js';

// ─── 配置 ───

const isDev = !app.isPackaged;
const SERVER_PORT = 3890;
const CLIENT_PORT = 5180;

// 数据目录：macOS 标准位置
const DATA_DIR = path.join(app.getPath('userData'), 'data');
const KB_REPO_PATH = path.join(DATA_DIR, 'knowledge-base');
const MODEL_CONFIG_PATH = path.join(app.getPath('userData'), 'model-config.json');
const SERVER_AUTH_PATH = path.join(app.getPath('userData'), 'server-auth.json');
const SERVER_PROFILES_PATH = path.join(app.getPath('userData'), 'server-profiles.json');
const AGENT_STATE_PATH = path.join(app.getPath('userData'), 'agent-conversations.json');
const GIT_ASKPASS_PATH = path.join(app.getPath('userData'), 'hololake-git-askpass.sh');
interface ServerProfileDefinition {
  id: string;
  physicalNodeId: string;
  name: string;
  purpose: 'personal-fifth-domain' | 'enterprise-lighthouse';
  sshAlias: string;
  tunnelPort: number;
  remoteForgejoPort: number;
  lighthouseTunnelPort?: number;
  remoteLighthousePort?: number;
  channelTitle?: string;
  channelSubtitle?: string;
}

const PUBLIC_SERVER_PROFILES: Record<string, ServerProfileDefinition> = {
  'AW-GZ-001': {
    id: 'AW-GZ-001',
    physicalNodeId: 'GH-CVM-MAIN-PROD-01',
    name: '企业灯塔服务器',
    purpose: 'enterprise-lighthouse',
    sshAlias: 'gh-enterprise-main',
    tunnelPort: 13341,
    remoteForgejoPort: 3341,
    lighthouseTunnelPort: 18031,
    remoteLighthousePort: 8031,
  },
};

function readServerProfiles(): Record<string, ServerProfileDefinition> {
  const profiles = { ...PUBLIC_SERVER_PROFILES };
  try {
    const localProfiles = JSON.parse(fs.readFileSync(SERVER_PROFILES_PATH, 'utf8')) as ServerProfileDefinition[];
    if (!Array.isArray(localProfiles)) return profiles;
    for (const profile of localProfiles) {
      if (
        !profile || typeof profile.id !== 'string' || typeof profile.physicalNodeId !== 'string'
        || typeof profile.name !== 'string' || profile.purpose !== 'personal-fifth-domain'
        || typeof profile.sshAlias !== 'string' || !Number.isInteger(profile.tunnelPort)
        || !Number.isInteger(profile.remoteForgejoPort)
      ) continue;
      profiles[profile.id] = profile;
    }
  } catch {
    // 新安装默认只知道企业公共灯塔；个人节点由本机私有配置登记，不进入安装包。
  }
  return profiles;
}

function getServerProfile(nodeId: string): ServerProfileDefinition {
  const profile = readServerProfiles()[nodeId];
  if (!profile) throw new Error('未登记的服务器节点');
  return profile;
}

function defaultPersonalServerId(): string | undefined {
  return Object.values(readServerProfiles()).find(profile => profile.purpose === 'personal-fifth-domain')?.id;
}

function forgejoBaseUrl(profile: ServerProfileDefinition): string {
  return `http://127.0.0.1:${profile.tunnelPort}`;
}

function lighthouseBaseUrl(profile: ServerProfileDefinition): string {
  if (!profile.lighthouseTunnelPort) throw new Error('该节点未登记灯塔服务');
  return `http://127.0.0.1:${profile.lighthouseTunnelPort}`;
}

interface ModelConfigFile {
  baseUrl: string;
  model: string;
  encryptedKey?: string;
  verifiedAt?: string;
}

interface ServerAuthFile {
  nodeId: string;
  username: string;
  encryptedToken: string;
}

function writeGitAskPass(): void {
  const content = `#!/bin/sh
case "$1" in
  *Username*) printf '%s\\n' "$HOLOLAKE_FORGEJO_USERNAME" ;;
  *) printf '%s\\n' "$HOLOLAKE_FORGEJO_TOKEN" ;;
esac
`;
  fs.mkdirSync(path.dirname(GIT_ASKPASS_PATH), { recursive: true });
  fs.writeFileSync(GIT_ASKPASS_PATH, content, { mode: 0o700 });
}

function clearGitCredentialEnvironment(): void {
  delete process.env.HOLOLAKE_FORGEJO_USERNAME;
  delete process.env.HOLOLAKE_FORGEJO_TOKEN;
  delete process.env.GIT_ASKPASS;
  delete process.env.GIT_TERMINAL_PROMPT;
}

function applyStoredServerAuth(): { nodeId: string; username: string; token: string } | null {
  try {
    if (!safeStorage.isEncryptionAvailable()) return null;
    const stored = JSON.parse(fs.readFileSync(SERVER_AUTH_PATH, 'utf8')) as ServerAuthFile;
    getServerProfile(stored.nodeId);
    if (!stored.encryptedToken) return null;
    const token = safeStorage.decryptString(Buffer.from(stored.encryptedToken, 'base64'));
    writeGitAskPass();
    process.env.HOLOLAKE_FORGEJO_USERNAME = stored.username;
    process.env.HOLOLAKE_FORGEJO_TOKEN = token;
    process.env.GIT_ASKPASS = GIT_ASKPASS_PATH;
    process.env.GIT_TERMINAL_PROMPT = '0';
    return { nodeId: stored.nodeId, username: stored.username, token };
  } catch {
    clearGitCredentialEnvironment();
    return null;
  }
}

function saveServerAuth(nodeId: string, username: string, token: string): void {
  if (!safeStorage.isEncryptionAvailable()) throw new Error('macOS 加密存储当前不可用');
  fs.mkdirSync(path.dirname(SERVER_AUTH_PATH), { recursive: true });
  const encryptedToken = safeStorage.encryptString(token).toString('base64');
  fs.writeFileSync(
    SERVER_AUTH_PATH,
    JSON.stringify({ nodeId, username, encryptedToken } satisfies ServerAuthFile),
    { mode: 0o600 },
  );
  applyStoredServerAuth();
}

function readModelConfig(): ModelConfigFile {
  try {
    return JSON.parse(fs.readFileSync(MODEL_CONFIG_PATH, 'utf8')) as ModelConfigFile;
  } catch {
    return { baseUrl: 'https://api.openai.com/v1', model: 'gpt-4o' };
  }
}

function applyModelConfig(): ModelConfigFile {
  const config = readModelConfig();
  process.env.HOLOLAKE_LLM_BASE = config.baseUrl;
  process.env.HOLOLAKE_LLM_MODEL = config.model;
  if (config.encryptedKey && safeStorage.isEncryptionAvailable()) {
    process.env.HOLOLAKE_LLM_KEY = safeStorage.decryptString(Buffer.from(config.encryptedKey, 'base64'));
  } else {
    delete process.env.HOLOLAKE_LLM_KEY;
  }
  process.env.HOLOLAKE_LLM_VERIFIED = config.verifiedAt ? '1' : '0';
  return config;
}

async function verifyModelConfig(): Promise<{ verifiedAt: string }> {
  const config = readModelConfig();
  if (!config.encryptedKey || !safeStorage.isEncryptionAvailable()) throw new Error('请先保存模型密钥');
  const apiKey = safeStorage.decryptString(Buffer.from(config.encryptedKey, 'base64'));
  const response = await fetch(`${config.baseUrl}/chat/completions`, {
    method: 'POST',
    headers: { 'Content-Type': 'application/json', Authorization: `Bearer ${apiKey}` },
    body: JSON.stringify({
      model: config.model,
      messages: [
        { role: 'system', content: 'This is a HoloLake model connectivity check. Reply with OK.' },
        { role: 'user', content: 'ping' },
      ],
      max_tokens: 8,
      temperature: 0,
    }),
    signal: AbortSignal.timeout(20000),
  });
  const data = await response.json().catch(() => null) as any;
  if (!response.ok) throw new Error(data?.error?.message || `模型服务返回 HTTP ${response.status}`);
  if (!data?.choices?.[0]?.message) throw new Error('模型服务没有返回兼容的响应');
  const verifiedAt = new Date().toISOString();
  fs.writeFileSync(MODEL_CONFIG_PATH, JSON.stringify({ ...config, verifiedAt }), { mode: 0o600 });
  applyModelConfig();
  return { verifiedAt };
}

// ─── 后端服务器 ───

let serverProcess: ChildProcess | null = null;
const serverTunnels = new Map<string, ChildProcess>();

async function isServerTunnelReady(profile: ServerProfileDefinition): Promise<boolean> {
  try {
    const checks: Promise<Response>[] = [
      fetch(`${forgejoBaseUrl(profile)}/user/login`, { signal: AbortSignal.timeout(1200) }),
    ];
    if (profile.lighthouseTunnelPort) {
      checks.push(fetch(`${lighthouseBaseUrl(profile)}/health`, { signal: AbortSignal.timeout(1200) }));
    }
    const responses = await Promise.all(checks);
    return responses.every(response => response.status === 200);
  } catch {
    return false;
  }
}

async function ensureServerTunnel(profile: ServerProfileDefinition): Promise<void> {
  if (await isServerTunnelReady(profile)) return;
  const currentTunnel = serverTunnels.get(profile.id);
  if (currentTunnel && currentTunnel.exitCode === null) {
    throw new Error(`${profile.name}连接正在建立，请稍后重试`);
  }

  const forwards = [
    '-L', `127.0.0.1:${profile.tunnelPort}:127.0.0.1:${profile.remoteForgejoPort}`,
  ];
  if (profile.lighthouseTunnelPort && profile.remoteLighthousePort) {
    forwards.push('-L', `127.0.0.1:${profile.lighthouseTunnelPort}:127.0.0.1:${profile.remoteLighthousePort}`);
  }
  const tunnel = spawn('/usr/bin/ssh', [
    '-N',
    ...forwards,
    '-o', 'BatchMode=yes',
    '-o', 'ExitOnForwardFailure=yes',
    '-o', 'ServerAliveInterval=30',
    '-o', 'ServerAliveCountMax=3',
    profile.sshAlias,
  ], {
    stdio: 'ignore',
  });

  serverTunnels.set(profile.id, tunnel);
  tunnel.once('exit', () => {
    serverTunnels.delete(profile.id);
  });

  for (let attempt = 0; attempt < 20; attempt += 1) {
    if (await isServerTunnelReady(profile)) return;
    if (tunnel.exitCode !== null) break;
    await new Promise(resolve => setTimeout(resolve, 250));
  }
  tunnel.kill('SIGTERM');
  serverTunnels.delete(profile.id);
  throw new Error(`无法通过本机登记密钥连接${profile.name}`);
}

function stopServerTunnels(): void {
  for (const tunnel of serverTunnels.values()) tunnel.kill('SIGTERM');
  serverTunnels.clear();
}

async function detachKnowledgeRemote(): Promise<void> {
  try {
    await fetch(`http://127.0.0.1:${SERVER_PORT}/api/forgejo/remote`, { method: 'DELETE' });
  } catch {
    // 本地知识库服务不可用时不阻断账号退出；下次登录仍会重新校验仓库权限。
  }
}

async function forgejoRequest(
  nodeId: string,
  route: string,
  init: RequestInit = {},
  auth?: { username?: string; password?: string; token?: string },
): Promise<{ response: Response; data: any }> {
  const profile = getServerProfile(nodeId);
  await ensureServerTunnel(profile);
  const headers = new Headers(init.headers);
  headers.set('Accept', 'application/json');
  if (init.body) headers.set('Content-Type', 'application/json');
  if (auth?.token) headers.set('Authorization', `token ${auth.token}`);
  if (auth?.username && auth.password) {
    headers.set('Authorization', `Basic ${Buffer.from(`${auth.username}:${auth.password}`).toString('base64')}`);
  }
  const response = await fetch(`${forgejoBaseUrl(profile)}${route}`, {
    ...init,
    headers,
    signal: AbortSignal.timeout(10000),
  });
  const text = await response.text();
  let data: any = null;
  if (text) {
    try { data = JSON.parse(text); } catch { data = { message: text }; }
  }
  return { response, data };
}

function startServer(): Promise<void> {
  return new Promise((resolve, reject) => {
    if (isDev) {
      // 开发模式：用 spawn 启动外部 tsx
      const serverScript = path.resolve(__dirname, '../../guanghu-knowledge-base/server/index.ts');
      serverProcess = spawn('npx', ['tsx', serverScript], {
        env: {
          ...process.env,
          KB_PORT: String(SERVER_PORT),
          KB_REPO_PATH,
          HOLOLAKE_AGENT_STATE_PATH: AGENT_STATE_PATH,
          NODE_ENV: 'development',
        },
        cwd: path.resolve(__dirname, '../..'),
        stdio: ['pipe', 'pipe', 'pipe'],
      });

      serverProcess.stdout?.on('data', (data: Buffer) => {
        const msg = data.toString().trim();
        console.log(`[KB Server] ${msg}`);
        if (msg.includes('已启动')) resolve();
      });

      serverProcess.stderr?.on('data', (data: Buffer) => {
        console.error(`[KB Server Error] ${data.toString().trim()}`);
      });

      serverProcess.on('error', (err: Error) => {
        console.error('服务器启动失败:', err);
        reject(err);
      });

      serverProcess.on('exit', (code: number | null) => {
        console.log(`[KB Server] 退出，code=${code}`);
        serverProcess = null;
      });

      setTimeout(() => resolve(), 5000);
    } else {
      // 生产模式：直接在主进程内加载 server-bundle
      try {
        process.env.KB_PORT = String(SERVER_PORT);
        process.env.KB_REPO_PATH = KB_REPO_PATH;
        process.env.HOLOLAKE_AGENT_STATE_PATH = AGENT_STATE_PATH;
        const serverBundle = path.join(__dirname, 'server-bundle.cjs');
        require(serverBundle);
        console.log(`[KB Server] 内嵌启动，端口 ${SERVER_PORT}`);
        resolve();
      } catch (err) {
        console.error('服务器内嵌启动失败:', err);
        reject(err);
      }
    }
  });
}

function stopServer(): void {
  if (serverProcess) {
    serverProcess.kill('SIGTERM');
    serverProcess = null;
  }
}

async function waitForServerReady(): Promise<void> {
  for (let attempt = 0; attempt < 40; attempt += 1) {
    try {
      const response = await fetch(`http://127.0.0.1:${SERVER_PORT}/api/health`, {
        signal: AbortSignal.timeout(800),
      });
      if (response.ok) return;
    } catch {
      // 服务仍在启动，继续读取真实健康端点，不提前打开一个离线界面。
    }
    await new Promise(resolve => setTimeout(resolve, 250));
  }
  throw new Error('HoloLake 本地服务未在规定时间内就绪');
}

// ─── 窗口 ───

let mainWindow: BrowserWindow | null = null;

function createWindow(): void {
  mainWindow = new BrowserWindow({
    width: 1280,
    height: 860,
    minWidth: 800,
    minHeight: 600,
    titleBarStyle: 'hiddenInset',
    trafficLightPosition: { x: 16, y: 16 },
    backgroundColor: '#07111d',
    webPreferences: {
      preload: path.join(__dirname, 'preload.cjs'),
      contextIsolation: true,
      nodeIntegration: false,
    },
  });

  if (isDev) {
    mainWindow.loadURL(`http://localhost:${CLIENT_PORT}`);
    mainWindow.webContents.openDevTools({ mode: 'detach' });
  } else {
    mainWindow.loadFile(path.join(__dirname, '../dist/index.html'));
  }

  // 外部链接用系统浏览器打开
  mainWindow.webContents.setWindowOpenHandler(({ url }) => {
    if (url.startsWith('http')) shell.openExternal(url);
    return { action: 'deny' };
  });

  mainWindow.on('closed', () => {
    mainWindow = null;
  });
}

ipcMain.handle('get-data-path', () => DATA_DIR);
ipcMain.handle('knowledge:import-folder', async () => {
  const options: Electron.OpenDialogOptions = {
    title: '导入本地知识文件夹',
    buttonLabel: '导入到 HoloLake',
    properties: ['openDirectory'],
  };
  const selection = mainWindow
    ? await dialog.showOpenDialog(mainWindow, options)
    : await dialog.showOpenDialog(options);
  if (selection.canceled || !selection.filePaths[0]) {
    return { cancelled: true, imported: 0, assets: 0, skipped: 0, failed: [] };
  }
  return importKnowledgeFolder(selection.filePaths[0], KB_REPO_PATH);
});
ipcMain.handle('agent:get-config', () => {
  const config = readModelConfig();
  return {
    baseUrl: config.baseUrl,
    model: config.model,
    configured: Boolean(config.encryptedKey && safeStorage.isEncryptionAvailable()),
    operational: Boolean(config.encryptedKey && config.verifiedAt && safeStorage.isEncryptionAvailable()),
    verifiedAt: config.verifiedAt,
  };
});
ipcMain.handle('agent:save-config', (_event, input: { baseUrl: string; model: string; apiKey?: string }) => {
  const baseUrl = String(input.baseUrl || '').trim().replace(/\/$/, '');
  const model = String(input.model || '').trim();
  if (!/^https:\/\//i.test(baseUrl)) throw new Error('模型服务地址必须使用 HTTPS');
  if (!model) throw new Error('模型名称不能为空');
  if (!safeStorage.isEncryptionAvailable()) throw new Error('macOS 加密存储当前不可用');
  const previous = readModelConfig();
  const encryptedKey = input.apiKey
    ? safeStorage.encryptString(String(input.apiKey)).toString('base64')
    : previous.encryptedKey;
  if (!encryptedKey) throw new Error('请填写模型密钥');
  const verificationStillValid = !input.apiKey && previous.baseUrl === baseUrl && previous.model === model;
  fs.mkdirSync(path.dirname(MODEL_CONFIG_PATH), { recursive: true });
  fs.writeFileSync(MODEL_CONFIG_PATH, JSON.stringify({
    baseUrl,
    model,
    encryptedKey,
    verifiedAt: verificationStillValid ? previous.verifiedAt : undefined,
  }), { mode: 0o600 });
  applyModelConfig();
  return { baseUrl, model, configured: true, operational: verificationStillValid && Boolean(previous.verifiedAt) };
});
ipcMain.handle('agent:test-config', () => verifyModelConfig());
ipcMain.handle('server:list', async () => {
  return Promise.all(Object.values(readServerProfiles()).map(async profile => ({
    id: profile.id,
    physicalNodeId: profile.physicalNodeId,
    name: profile.name,
    purpose: profile.purpose,
    channelTitle: profile.channelTitle,
    channelSubtitle: profile.channelSubtitle,
    connected: await isServerTunnelReady(profile),
    verified: true,
  })));
});
ipcMain.handle('server:connect', async (_event, nodeId: string) => {
  const profile = getServerProfile(nodeId);
  await ensureServerTunnel(profile);
  return {
    id: profile.id,
    physicalNodeId: profile.physicalNodeId,
    name: profile.name,
    purpose: profile.purpose,
    channelTitle: profile.channelTitle,
    channelSubtitle: profile.channelSubtitle,
    connected: true,
    verified: true,
  };
});
ipcMain.handle('server:domain-registry', async () => {
  const profile = getServerProfile('AW-GZ-001');
  try {
    await ensureServerTunnel(profile);
  } catch {
    // 公共灯塔不可达时返回真实离线状态，界面仍可浏览已登记的四域结构。
  }
  const connected = await isServerTunnelReady(profile);
  let lighthouseStatus: any = null;
  let lighthouseHealth: any = null;
  if (connected) {
    const [statusResponse, healthResponse] = await Promise.all([
      fetch(`${lighthouseBaseUrl(profile)}/v1/status`, { signal: AbortSignal.timeout(3000) }),
      fetch(`${lighthouseBaseUrl(profile)}/health`, { signal: AbortSignal.timeout(3000) }),
    ]);
    if (statusResponse.ok) lighthouseStatus = await statusResponse.json();
    if (healthResponse.ok) lighthouseHealth = await healthResponse.json();
  }
  const liveDomains = new Map((lighthouseStatus?.domains || []).map((domain: any) => [domain.id, domain]));
  const domain = (serverId: string, fallback: Record<string, unknown>) => ({
    ...fallback,
    serverId,
    live: liveDomains.get(serverId) || null,
  });
  return {
    nodeId: profile.id,
    physicalNodeId: profile.physicalNodeId,
    connected,
    verified: Boolean(lighthouseStatus && lighthouseHealth),
    codeChannel: connected ? 'reachable' : 'not-connected',
    lighthouse: lighthouseHealth ? {
      mode: lighthouseHealth.mode,
      mapHash: lighthouseHealth.map_hash,
      execution: lighthouseHealth.execution,
      hostState: lighthouseStatus?.host_state,
      observedAt: lighthouseStatus?.observed_at,
    } : null,
    domains: [
      domain('DOMAIN-MAIN', { id: 'main', number: 'HLDP-DOMAIN-MAIN-001', name: '光湖主域', responsibility: '公共定义、版本发布、广播与模块生态状态', repository: 'domain-main' }),
      domain('DOMAIN-SUB', { id: 'sub', number: 'HLDP-DOMAIN-SUB-001', name: '光湖分域', responsibility: '行业入口、模块目录与初始化频道路由', repository: 'domain-sub' }),
      domain('DOMAIN-ZERO', { id: 'zero', number: 'HLDP-DOMAIN-ZERO-001', name: '光湖零域', responsibility: '模块试装、实验、质量验证与可回滚预览', repository: 'domain-zero' }),
      domain('DOMAIN-ZS', { id: 'zero-sense', number: 'HLDP-DOMAIN-ZEROSENSE-001', name: '光湖零感域', responsibility: '团队身份、责任、权限、审计与个人节点发现', repository: 'domain-zero-sense' }),
    ],
  };
});
ipcMain.handle('server:session', async (_event, requestedNodeId?: string) => {
  const stored = applyStoredServerAuth();
  const profiles = readServerProfiles();
  const nodeId = requestedNodeId && profiles[requestedNodeId]
    ? requestedNodeId
    : stored?.nodeId || defaultPersonalServerId() || '';
  if (!stored || stored.nodeId !== nodeId) return { authenticated: false, nodeId };
  try {
    const { response, data } = await forgejoRequest(nodeId, '/api/v1/user', {}, { token: stored.token });
    if (!response.ok) {
      fs.rmSync(SERVER_AUTH_PATH, { force: true });
      clearGitCredentialEnvironment();
      return { authenticated: false, nodeId };
    }
    return { authenticated: true, nodeId, username: data.login };
  } catch {
    return { authenticated: false, nodeId };
  }
});
ipcMain.handle('server:domain-access', async (_event, domainId = 'DOM-FIFTH-0001') => {
  const stored = applyStoredServerAuth();
  let accountVerified = false;
  if (stored) {
    try {
      const { response } = await forgejoRequest(stored.nodeId, '/api/v1/user', {}, { token: stored.token });
      accountVerified = response.ok;
    } catch {
      accountVerified = false;
    }
  }
  // Forgejo identity is only the first proof. A signed manifest, scoped capability and
  // matching online receipt must arrive from the lighthouse/domain before runtime entry.
  return evaluateDomainAccess({
    accountVerified,
    domainId: String(domainId),
    nodeId: stored?.nodeId || defaultPersonalServerId() || '',
  });
});
ipcMain.handle('server:login', async (_event, input: { nodeId: string; username: string; password: string }) => {
  const username = String(input.username || '').trim();
  const password = String(input.password || '');
  getServerProfile(input.nodeId);
  if (!username || !password) throw new Error('请输入账号和密码');

  const basicAuth = { username, password };
  const identity = await forgejoRequest(input.nodeId, '/api/v1/user', {}, basicAuth);
  if (!identity.response.ok) throw new Error('账号或密码不正确');

  const tokenName = 'hololake-desktop';
  const existing = await forgejoRequest(input.nodeId, `/api/v1/users/${encodeURIComponent(username)}/tokens`, {}, basicAuth);
  if (existing.response.ok && Array.isArray(existing.data)) {
    for (const token of existing.data) {
      if (token?.name === tokenName && token?.id) {
        await forgejoRequest(
          input.nodeId,
          `/api/v1/users/${encodeURIComponent(username)}/tokens/${token.id}`,
          { method: 'DELETE' },
          basicAuth,
        );
      }
    }
  }
  const created = await forgejoRequest(
    input.nodeId,
    `/api/v1/users/${encodeURIComponent(username)}/tokens`,
    { method: 'POST', body: JSON.stringify({ name: tokenName, scopes: ['all'] }) },
    basicAuth,
  );
  if (created.response.status !== 201 || !created.data?.sha1) {
    throw new Error(created.data?.message || '无法建立 HoloLake 登录令牌');
  }
  const previous = applyStoredServerAuth();
  if (!previous || previous.nodeId !== input.nodeId || previous.username !== identity.data.login) {
    await detachKnowledgeRemote();
  }
  saveServerAuth(input.nodeId, username, created.data.sha1);
  return { authenticated: true, nodeId: input.nodeId, username: identity.data.login };
});
ipcMain.handle('server:logout', async () => {
  const stored = applyStoredServerAuth();
  await detachKnowledgeRemote();
  fs.rmSync(SERVER_AUTH_PATH, { force: true });
  clearGitCredentialEnvironment();
  return { authenticated: false, nodeId: stored?.nodeId || defaultPersonalServerId() || '' };
});
ipcMain.handle('server:repositories', async () => {
  const stored = applyStoredServerAuth();
  if (!stored) throw new Error('请先登录服务器');
  const { response, data } = await forgejoRequest(stored.nodeId, '/api/v1/user/repos?limit=100', {}, { token: stored.token });
  if (!response.ok || !Array.isArray(data)) throw new Error(data?.message || '读取服务器仓库失败');
  return data.map(repo => ({
    name: repo.name,
    fullName: repo.full_name,
    private: repo.private,
    defaultBranch: repo.default_branch || 'main',
  }));
});
ipcMain.handle('server:create-repository', async (_event, input: { name: string; description?: string }) => {
  const stored = applyStoredServerAuth();
  if (!stored) throw new Error('请先登录服务器');
  const name = String(input.name || '').trim();
  if (!/^[A-Za-z0-9._-]{1,100}$/.test(name)) throw new Error('仓库名称只能使用字母、数字、点、短横线或下划线');
  const { response, data } = await forgejoRequest(stored.nodeId, '/api/v1/user/repos', {
    method: 'POST',
    body: JSON.stringify({
      name,
      description: String(input.description || ''),
      private: true,
      auto_init: true,
      default_branch: 'main',
    }),
  }, { token: stored.token });
  if (response.status !== 201) throw new Error(data?.message || '创建仓库失败');
  return {
    name: data.name,
    fullName: data.full_name,
    private: data.private,
    defaultBranch: data.default_branch || 'main',
  };
});
ipcMain.handle('server:git-remote', async (_event, fullName: string) => {
  if (!/^[A-Za-z0-9._-]+\/[A-Za-z0-9._-]+$/.test(String(fullName || ''))) {
    throw new Error('仓库路径无效');
  }
  const stored = applyStoredServerAuth();
  if (!stored) throw new Error('请先登录服务器');
  const [owner, repository] = String(fullName).split('/');
  const access = await forgejoRequest(
    stored.nodeId,
    `/api/v1/repos/${encodeURIComponent(owner)}/${encodeURIComponent(repository)}`,
    {},
    { token: stored.token },
  );
  if (!access.response.ok || access.data?.full_name !== fullName) {
    throw new Error('当前账号无权访问该仓库');
  }
  return `${forgejoBaseUrl(getServerProfile(stored.nodeId))}/${fullName}.git`;
});

// ─── 应用生命周期 ───

app.whenReady().then(async () => {
  try {
    applyModelConfig();
    await startServer();
    await waitForServerReady();
    createWindow();
  } catch (err) {
    dialog.showErrorBox('启动失败', `知识库引擎启动失败：${err}`);
    app.quit();
  }

  app.on('activate', () => {
    if (BrowserWindow.getAllWindows().length === 0) createWindow();
  });
});

app.on('window-all-closed', () => {
  stopServer();
  if (process.platform !== 'darwin') app.quit();
});

app.on('before-quit', () => {
  stopServer();
  stopServerTunnels();
});