import express from 'express';
import fs from 'node:fs';
import { createProxyMiddleware } from 'http-proxy-middleware';
import path from 'node:path';
import { fileURLToPath } from 'node:url';
import {
  AUTH_COOKIE,
  clearSessionCookie,
  createAuthManager,
  parseCookies,
  sessionCookie,
} from './auth.mjs';
import { createDbPool, initSchema, isDatabaseConfigured } from './db.mjs';
import { createTkmindProxy } from './tkmind-proxy.mjs';
import {
  clearUserSessionCookie,
  createUserAuth,
  USER_COOKIE,
  userSessionCookie,
} from './user-auth.mjs';
import { createWikiAuth } from './wiki-auth.mjs';
import { PUBLISH_ROOT_DIR, resolvePublishDir } from './user-publish.mjs';
import { ensureWorkspaceHtmlThumbnail, startWorkspaceThumbnailWatcher } from './mindspace-workspace-thumbnails.mjs';
import { startWorkspaceAssetSyncWatcher } from './mindspace-workspace-sync.mjs';
import { attachRequestId, sendData, sendError } from './api-response.mjs';
import { createMindSpaceAuditWriter } from './mindspace-audit.mjs';
import { assertMindSpaceRoute, mindspaceFlags } from './mindspace-flags.mjs';
import { createMindSpaceService } from './mindspace.mjs';
import { createAssetService } from './mindspace-assets.mjs';
import { createPageService, pageInternals } from './mindspace-pages.mjs';
import { createPublicationService } from './mindspace-publications.mjs';
import { createPlazaPostService, formatPostRow, mapPlazaError } from './plaza-posts.mjs';
import { createPlazaInteractionService } from './plaza-interactions.mjs';
import {
  ensureAlgorithmConfig,
  loadAlgorithmConfig,
  recalculateHotScores,
} from './plaza-algorithm.mjs';
import { createPlazaRedis, createNoopPlazaRedis } from './plaza-redis.mjs';
import { startPlazaTasks, writebackPublications } from './plaza-tasks.mjs';
import { createPlazaSeoService } from './plaza-seo.mjs';
import { createPlazaOpsService, hasOpsRole } from './plaza-ops.mjs';
import { createCleanupService } from './mindspace-cleanup.mjs';
import { createAgentJobService } from './mindspace-agent-jobs.mjs';
import { createMindSpaceAgentRunner } from './mindspace-agent-runner.mjs';
import {
  analyzeChatMessageForSave,
  resolveStaticHtmlContent,
} from './mindspace-chat-save.mjs';
import { scanContent } from './mindspace-content-scan.mjs';
import { createRechargeService } from './billing-recharge.mjs';
import { createWechatPayClient, loadWechatPayConfig } from './wechat-pay.mjs';
import { createLlmProviderService, RELAY_BOOTSTRAP } from './llm-providers.mjs';

const __dirname = path.dirname(fileURLToPath(import.meta.url));

function loadEnvFile(filePath) {
  if (!fs.existsSync(filePath)) return;
  for (const line of fs.readFileSync(filePath, 'utf8').split('\n')) {
    const trimmed = line.trim();
    if (!trimmed || trimmed.startsWith('#')) continue;
    const eq = trimmed.indexOf('=');
    if (eq < 0) continue;
    const key = trimmed.slice(0, eq).trim();
    const value = trimmed.slice(eq + 1).trim();
    if (!process.env[key]) process.env[key] = value;
  }
}

loadEnvFile(path.join(__dirname, '../../.env.local'));
loadEnvFile(path.join(__dirname, '.env'));

const PORT = Number(process.env.H5_PORT ?? 8081);
const API_TARGET = process.env.TKMIND_API_TARGET ?? 'https://127.0.0.1:18006';
const API_SECRET = process.env.TKMIND_SERVER__SECRET_KEY ?? 'local-dev-secret';
const INTERNAL_AGENT_SECRET = process.env.MINDSPACE_INTERNAL_AGENT_SECRET ?? API_SECRET;
const ACCESS_PASSWORD = process.env.H5_ACCESS_PASSWORD;
const USERS_ROOT = process.env.H5_USERS_ROOT ?? path.join(__dirname, 'users');

const app = express();
app.set('trust proxy', 1);
const isSecureRequest = (req) =>
  req.secure || req.get('x-forwarded-proto')?.split(',')[0]?.trim() === 'https';
const msFlags = mindspaceFlags();

app.use(attachRequestId);
app.use((req, res, next) => {
  res.setHeader('X-Content-Type-Options', 'nosniff');
  res.setHeader('Referrer-Policy', 'strict-origin-when-cross-origin');
  res.setHeader('Permissions-Policy', 'camera=(), microphone=(), geolocation=()');
  res.setHeader('X-Frame-Options', 'SAMEORIGIN');
  if (isSecureRequest(req)) {
    res.setHeader('Strict-Transport-Security', 'max-age=31536000; includeSubDomains');
  }
  next();
});

function isLoopbackHostname(hostname) {
  return hostname === 'localhost' || hostname === '127.0.0.1' || hostname === '::1';
}

function csrfOriginCheck(req, res, next) {
  if (['GET', 'HEAD', 'OPTIONS'].includes(req.method)) return next();
  const host = req.get('host');
  const origin = req.get('origin');
  const referer = req.get('referer');
  if (!origin && !referer) return next();
  const requestHostname = (host ?? '').split(':')[0];
  const allowed = [origin, referer].some((value) => {
    if (!value) return false;
    try {
      const source = new URL(value);
      if (source.host === host) return true;
      return (
        isLoopbackHostname(requestHostname) && isLoopbackHostname(source.hostname)
      );
    } catch {
      return false;
    }
  });
  if (!allowed) {
    return sendError(res, req, 403, 'csrf_failed', '来源校验失败');
  }
  return next();
}

app.use('/api', csrfOriginCheck);
app.use('/auth', csrfOriginCheck);

const jsonBody = express.json({ limit: '1mb' });
const rawUploadBody = express.raw({
  type: 'application/octet-stream',
  limit: Number(process.env.MINDSPACE_MAX_FILE_BYTES ?? 2 * 1024 * 1024),
});

const wikiAuth = createWikiAuth(path.join(__dirname, PUBLISH_ROOT_DIR, 'wiki-db'));

let legacyAuth = null;
if (ACCESS_PASSWORD) {
  legacyAuth = createAuthManager({ password: ACCESS_PASSWORD });
}

let userAuth = null;
let tkmindProxy = null;
let mindSpace = null;
let mindSpaceAssets = null;
let mindSpaceAudit = null;
let mindSpacePages = null;
let mindSpacePublications = null;
let plazaPosts = null;
let plazaInteractions = null;
let plazaSeo = null;
let plazaOps = null;
let plazaRedis = createNoopPlazaRedis();
let mindSpaceCleanup = null;
let mindSpaceAgentJobs = null;
let mindSpaceAgentRunner = null;
let rechargeService = null;
let wechatPayClient = null;
let llmProviderService = null;

async function bootstrapUserAuth() {
  try {
    if (!isDatabaseConfigured()) return false;
    const pool = createDbPool();
    await initSchema(pool);
    mindSpace = createMindSpaceService(pool, {
      maxFileBytes: Number(process.env.MINDSPACE_MAX_FILE_BYTES ?? 2 * 1024 * 1024),
      aiDailyLimit: Number(process.env.MINDSPACE_FREE_AI_DAILY_LIMIT ?? 10),
      publicPageLimit: Number(process.env.MINDSPACE_FREE_PUBLIC_PAGE_LIMIT ?? 5),
      monthlyViewLimit: Number(process.env.MINDSPACE_FREE_MONTHLY_VIEW_LIMIT ?? 1000),
    });
    mindSpaceAssets = createAssetService(pool, {
      h5Root: __dirname,
      storageRoot:
        process.env.MINDSPACE_STORAGE_ROOT ?? path.join(__dirname, 'data', 'mindspace'),
      maxFileBytes: Number(process.env.MINDSPACE_MAX_FILE_BYTES ?? 2 * 1024 * 1024),
    });
    mindSpacePages = createPageService(pool, {
      h5Root: __dirname,
      storageRoot:
        process.env.MINDSPACE_STORAGE_ROOT ?? path.join(__dirname, 'data', 'mindspace'),
    });
    mindSpacePublications = createPublicationService(pool, {
      storageRoot:
        process.env.MINDSPACE_STORAGE_ROOT ?? path.join(__dirname, 'data', 'mindspace'),
      publicPageLimit: Number(process.env.MINDSPACE_FREE_PUBLIC_PAGE_LIMIT ?? 5),
    });
    await ensureAlgorithmConfig(pool);
    const plazaAlgorithmConfig = await loadAlgorithmConfig(pool);
    plazaRedis = await createPlazaRedis(process.env.PLAZA_REDIS_URL, pool);
    if (plazaRedis.enabled) {
      console.log('Plaza Redis enabled');
    }
    plazaSeo = createPlazaSeoService(pool);
    plazaInteractions = createPlazaInteractionService(pool, {
      formatPostRow,
      plazaRedis,
    });
    plazaPosts = createPlazaPostService(pool, {
      loadViewerReactions: (viewerId, postIds) =>
        plazaInteractions.loadViewerReactions(viewerId, postIds),
      plazaRedis,
      algorithmConfig: plazaAlgorithmConfig,
      onPostPublished: (postId) => plazaSeo?.notifyPostPublished(postId),
      loadFeaturedPosts: async (viewerId) => {
        if (!plazaOps) return { homepage_banner: [], trending: [], category_top: {} };
        return plazaOps.loadActiveFeaturedPosts(viewerId);
      },
    });
    plazaOps = createPlazaOpsService(pool, {
      formatPostRow,
      reviewPost: (...args) => plazaPosts.reviewPost(...args),
      invalidateFeedCaches: () => plazaRedis?.invalidateFeedCaches?.(),
    });
    startPlazaTasks({
      pool,
      plazaRedis,
      recalculateHotScores,
      writebackPublications,
    });
    mindSpaceCleanup = createCleanupService(pool, {
      storageRoot:
        process.env.MINDSPACE_STORAGE_ROOT ?? path.join(__dirname, 'data', 'mindspace'),
      h5Root: __dirname,
    });
    userAuth = createUserAuth(pool, {
      usersRoot: USERS_ROOT,
      h5Root: __dirname,
      defaultSignupBalanceCents: Number(process.env.H5_SIGNUP_BALANCE_CENTS ?? 1000),
    });
    wechatPayClient = createWechatPayClient(loadWechatPayConfig());
    rechargeService = createRechargeService(pool, {
      userAuth,
      wechatPay: wechatPayClient,
    });
    if (wechatPayClient.enabled) {
      console.log('WeChat Pay recharge enabled');
    }
    mindSpaceAgentJobs = createAgentJobService(pool, {
      pageService: mindSpacePages,
      storageRoot:
        process.env.MINDSPACE_STORAGE_ROOT ?? path.join(__dirname, 'data', 'mindspace'),
      maxOutputBytes: Number(process.env.MINDSPACE_MAX_FILE_BYTES ?? 2 * 1024 * 1024),
    });
    mindSpaceAgentRunner = createMindSpaceAgentRunner({
      apiTarget: API_TARGET,
      apiSecret: API_SECRET,
      userAuth,
      agentJobService: mindSpaceAgentJobs,
    });
    mindSpaceAudit = createMindSpaceAuditWriter(pool);
    startWorkspaceThumbnailWatcher(path.join(__dirname, PUBLISH_ROOT_DIR));
    startWorkspaceAssetSyncWatcher({
      publishRoot: path.join(__dirname, PUBLISH_ROOT_DIR),
      syncUserWorkspaceByUsername: async (username, options) => {
        const [rows] = await pool.query(`SELECT id FROM h5_users WHERE username = ? LIMIT 1`, [username]);
        const userId = rows[0]?.id;
        if (!userId) return;
        await mindSpaceAssets.syncWorkspaceAssets(userId, options);
      },
    });
    void mindSpaceAssets.expireStaleUploads().catch(() => {});
    setInterval(() => {
      void mindSpaceAssets?.expireStaleUploads().catch(() => {});
    }, 5 * 60 * 1000).unref?.();
    await userAuth.ensureAdminUser();
    llmProviderService = createLlmProviderService(pool, {
      apiTarget: API_TARGET,
      apiSecret: API_SECRET,
    });
    void llmProviderService
      .ensureBootstrapRelay()
      .then((result) => {
        if (result.created) {
          console.log(`LLM relay bootstrap created: ${RELAY_BOOTSTRAP.name}`);
        }
      })
      .catch((err) => {
        console.warn('LLM relay bootstrap skipped:', err instanceof Error ? err.message : err);
      });
    void llmProviderService.syncSelectedToGoosed().catch((err) => {
      console.warn('LLM provider boot sync skipped:', err instanceof Error ? err.message : err);
    });
    tkmindProxy = createTkmindProxy({ apiTarget: API_TARGET, apiSecret: API_SECRET, userAuth });
    console.log(`User auth enabled (MySQL), workspace root: ${USERS_ROOT}`);
    return true;
  } catch (err) {
    console.error('User auth bootstrap failed:', err);
    return false;
  }
}

const userAuthReady = bootstrapUserAuth();

function legacySessionToken(req) {
  return parseCookies(req.get('cookie'))[AUTH_COOKIE];
}

function userToken(req) {
  return parseCookies(req.get('cookie'))[USER_COOKIE];
}

async function attachUserSession(req, _res, next) {
  if (!userAuth) return next();
  const token = userToken(req);
  req.userToken = token;
  req.userSession = token ? await userAuth.verify(token) : null;
  next();
}

app.use(attachUserSession);

// ============ Legacy password auth ============

app.get('/auth/status', async (req, res) => {
  await userAuthReady;
  if (userAuth) {
    const me = await userAuth.getMe(userToken(req));
    if (!me) return res.json({ authenticated: false, mode: 'user' });
    const row = await userAuth.getUserById(me.id);
    const capabilityState = await userAuth.resolveUserCapabilities(row);
    return res.json({
      authenticated: true,
      user: me,
      mode: 'user',
      capabilities: capabilityState.capabilities,
      grantedSkills: capabilityState.grantedSkills ?? [],
      unrestricted: capabilityState.unrestricted,
    });
  }
  if (legacyAuth) {
    return res.json({
      authenticated: legacyAuth.verify(legacySessionToken(req)),
      mode: 'legacy',
    });
  }
  return res.json({ authenticated: false, mode: 'none' });
});

app.post('/auth/login', jsonBody, async (req, res) => {
  await userAuthReady;
  const secure = isSecureRequest(req);

  if (userAuth) {
    const { username, password } = req.body ?? {};
    if (!username || !password) {
      return res.status(400).json({ message: '用户名和密码不能为空' });
    }
    const result = await userAuth.login({ username, password, ip: req.ip });
    if (!result.ok) {
      if (result.retryAfterMs > 0) {
        res.set('Retry-After', String(Math.ceil(result.retryAfterMs / 1000)));
        return res.status(429).json({ message: result.message });
      }
      return res.status(401).json({ message: result.message });
    }
    res.set('Set-Cookie', userSessionCookie(result.token, secure));
    return res.json({ authenticated: true, user: result.user, mode: 'user' });
  }

  if (!legacyAuth) {
    return res.status(503).json({ message: '未配置用户数据库或访问密码' });
  }

  const password = typeof req.body?.password === 'string' ? req.body.password : '';
  const result = legacyAuth.login(password, req.ip);
  if (!result.ok) {
    if (result.retryAfterMs > 0) {
      res.set('Retry-After', String(Math.ceil(result.retryAfterMs / 1000)));
      return res.status(429).json({ message: '尝试次数过多，请稍后再试' });
    }
    return res.status(401).json({ message: '密码错误，请重试' });
  }
  res.set('Set-Cookie', sessionCookie(result.token, secure));
  return res.json({ authenticated: true, mode: 'legacy' });
});

app.post('/auth/register', jsonBody, async (req, res) => {
  await userAuthReady;
  if (!userAuth) {
    return res.status(503).json({ message: '未启用用户注册' });
  }
  const { username, password, displayName, email } = req.body ?? {};
  const result = await userAuth.register({ username, password, displayName, email });
  if (!result.ok) {
    const status = result.message.includes('已存在') ? 409 : 400;
    return res.status(status).json({ message: result.message });
  }
  if (plazaSeo && req.body?.utm_source) {
    void plazaSeo
      .recordAttribution(
        {
          event_type: 'signup',
          utm_source: req.body.utm_source,
          utm_medium: req.body.utm_medium,
          utm_campaign: req.body.utm_campaign,
          ref_id: req.body.ref ?? req.body.ref_id,
          user_id: result.user?.id ?? null,
        },
        plazaClientIp(req),
      )
      .catch(() => {});
  }
  return res.json({ ok: true, user: result.user });
});

app.post('/auth/reset-password', jsonBody, async (req, res) => {
  await userAuthReady;
  if (!userAuth) {
    return res.status(503).json({ message: '未启用用户系统' });
  }
  const { username, email, password } = req.body ?? {};
  const result = await userAuth.resetPassword({ username, email, password });
  if (!result.ok) {
    return res.status(400).json({ message: result.message });
  }
  return res.json({ ok: true });
});

app.get('/auth/me', async (req, res) => {
  await userAuthReady;
  if (!userAuth) return res.status(503).json({ message: '未启用用户系统' });
  const me = await userAuth.getMe(userToken(req));
  if (!me) return res.status(401).json({ message: '未登录' });
  const paths = await userAuth.listPathGrants(me.id);
  const capabilityState = await userAuth.resolveUserCapabilities(
    await userAuth.getUserById(me.id),
  );
  return res.json({
    user: me,
    paths,
    capabilities: capabilityState.capabilities,
    grantedSkills: capabilityState.grantedSkills ?? [],
    unrestricted: capabilityState.unrestricted,
  });
});

app.post('/auth/logout', async (req, res) => {
  await userAuthReady;
  const secure = isSecureRequest(req);
  if (userAuth) {
    await userAuth.revoke(userToken(req));
    res.set('Set-Cookie', clearUserSessionCookie(secure));
  }
  if (legacyAuth) {
    legacyAuth.revoke(legacySessionToken(req));
    res.set('Set-Cookie', clearSessionCookie(secure));
  }
  res.status(204).end();
});

// ============ Admin API ============

function requireAdmin(req, res, next) {
  if (!req.currentUser || req.currentUser.role !== 'admin') {
    res.status(403).json({ message: '需要管理员权限' });
    return;
  }
  next();
}

const adminApi = express.Router();
adminApi.use(jsonBody);

adminApi.use(async (req, res, next) => {
  await userAuthReady;
  if (!userAuth) return res.status(503).json({ message: '未启用用户系统' });
  const me = await userAuth.getMe(userToken(req));
  if (!me) return res.status(401).json({ message: '未登录' });
  req.currentUser = me;
  next();
});

adminApi.get('/users', requireAdmin, async (_req, res) => {
  const users = await userAuth.listUsers();
  res.json({ users });
});

adminApi.get('/summary', requireAdmin, async (_req, res) => {
  const summary = await userAuth.getAdminSummary();
  let llm = null;
  if (llmProviderService) {
    const keys = await llmProviderService.listKeys();
    const global = await llmProviderService.getGlobalSettings();
    const selected = keys.find((key) => key.isSelected);
    llm = {
      keyCount: keys.length,
      selectedKeyName: selected?.name ?? null,
      globalModel: global?.model ?? null,
    };
  }
  res.json({ summary: { ...summary, llm } });
});

adminApi.post('/users', requireAdmin, async (req, res) => {
  const result = await userAuth.createUser(req.body ?? {});
  if (!result.ok) return res.status(400).json({ message: result.message });
  res.status(201).json({ user: result.user });
});

adminApi.patch('/users/:userId', requireAdmin, async (req, res) => {
  const result = await userAuth.updateUser(req.params.userId, req.body ?? {});
  if (!result.ok) return res.status(400).json({ message: result.message });
  res.json({ user: result.user });
});

adminApi.post('/users/:userId/recharge', requireAdmin, async (req, res) => {
  const amountCents = Number(req.body?.amountCents);
  const note = typeof req.body?.note === 'string' ? req.body.note : '';
  const result = await userAuth.recharge(
    req.params.userId,
    amountCents,
    req.currentUser.id,
    note,
  );
  if (!result.ok) return res.status(400).json({ message: result.message });
  res.json({ user: result.user });
});

adminApi.get('/usage', requireAdmin, async (req, res) => {
  const userId = typeof req.query.userId === 'string' ? req.query.userId : null;
  const limit = Number(req.query.limit ?? 50);
  const records = await userAuth.listUsageRecords({ userId, limit });
  res.json({ records });
});

adminApi.get('/capabilities/catalog', requireAdmin, (_req, res) => {
  res.json({ catalog: userAuth.capabilityCatalog });
});

adminApi.get('/capabilities/role/:role', requireAdmin, async (req, res) => {
  const role = req.params.role === 'admin' ? 'admin' : 'user';
  if (role === 'admin') {
    return res.json({
      role,
      capabilities: Object.fromEntries(
        userAuth.capabilityCatalog.map((item) => [item.key, true]),
      ),
      unrestricted: true,
    });
  }
  res.json(await userAuth.getRoleCapabilities('user'));
});

adminApi.put('/capabilities/role/:role', requireAdmin, async (req, res) => {
  const role = req.params.role === 'admin' ? 'admin' : 'user';
  const result = await userAuth.setRoleCapabilities(role, req.body?.capabilities ?? {});
  if (!result.ok) return res.status(400).json({ message: result.message });
  res.json(result);
});

adminApi.get('/users/:userId/capabilities', requireAdmin, async (req, res) => {
  const result = await userAuth.getUserCapabilities(req.params.userId);
  if (!result.ok) return res.status(404).json({ message: result.message });
  res.json(result);
});

adminApi.put('/users/:userId/capabilities', requireAdmin, async (req, res) => {
  const result = await userAuth.setUserCapabilities(
    req.params.userId,
    req.body?.capabilities ?? {},
  );
  if (!result.ok) return res.status(400).json({ message: result.message });
  res.json(result);
});

adminApi.delete('/users/:userId/capabilities', requireAdmin, async (req, res) => {
  const result = await userAuth.clearUserCapabilityOverrides(req.params.userId);
  if (!result.ok) return res.status(404).json({ message: result.message });
  res.json(result);
});

adminApi.get('/policies/catalog', requireAdmin, (_req, res) => {
  res.json({ catalog: userAuth.policyCatalog });
});

adminApi.get('/policies/role/:role', requireAdmin, async (req, res) => {
  const role = req.params.role === 'admin' ? 'admin' : 'user';
  if (role === 'admin') {
    return res.json({ role, policies: {}, unrestricted: true });
  }
  res.json(await userAuth.getRolePolicies('user'));
});

adminApi.put('/policies/role/:role', requireAdmin, async (req, res) => {
  const role = req.params.role === 'admin' ? 'admin' : 'user';
  const result = await userAuth.setRolePolicies(role, req.body?.policies ?? {});
  if (!result.ok) return res.status(400).json({ message: result.message });
  res.json(result);
});

adminApi.get('/users/:userId/policies', requireAdmin, async (req, res) => {
  const result = await userAuth.getUserPolicies(req.params.userId);
  if (!result.ok) return res.status(404).json({ message: result.message });
  res.json(result);
});

adminApi.put('/users/:userId/policies', requireAdmin, async (req, res) => {
  const result = await userAuth.setUserPolicies(req.params.userId, req.body?.policies ?? {});
  if (!result.ok) return res.status(400).json({ message: result.message });
  res.json(result);
});

adminApi.delete('/users/:userId/policies', requireAdmin, async (req, res) => {
  const result = await userAuth.clearUserPolicyOverrides(req.params.userId);
  if (!result.ok) return res.status(404).json({ message: result.message });
  res.json(result);
});

adminApi.get('/skills/catalog', requireAdmin, (_req, res) => {
  res.json({ catalog: userAuth.skillCatalog });
});

adminApi.get('/skills/role/:role', requireAdmin, async (req, res) => {
  const role = req.params.role === 'admin' ? 'admin' : 'user';
  if (role === 'admin') {
    return res.json({
      role,
      skills: Object.fromEntries(userAuth.skillCatalog.map((item) => [item.name, true])),
    });
  }
  res.json(await userAuth.getRoleSkills('user'));
});

adminApi.put('/skills/role/:role', requireAdmin, async (req, res) => {
  const role = req.params.role === 'admin' ? 'admin' : 'user';
  const result = await userAuth.setRoleSkills(role, req.body?.skills ?? {});
  if (!result.ok) return res.status(400).json({ message: result.message });
  res.json(result);
});

adminApi.get('/users/:userId/skills', requireAdmin, async (req, res) => {
  const result = await userAuth.getUserSkills(req.params.userId);
  if (!result.ok) return res.status(404).json({ message: result.message });
  res.json(result);
});

adminApi.put('/users/:userId/skills', requireAdmin, async (req, res) => {
  const result = await userAuth.setUserSkills(req.params.userId, req.body?.skills ?? {});
  if (!result.ok) return res.status(400).json({ message: result.message });
  res.json(result);
});

adminApi.delete('/users/:userId/skills', requireAdmin, async (req, res) => {
  const result = await userAuth.clearUserSkillOverrides(req.params.userId);
  if (!result.ok) return res.status(404).json({ message: result.message });
  res.json(result);
});

adminApi.get('/ledger', requireAdmin, async (req, res) => {
  const userId = typeof req.query.userId === 'string' ? req.query.userId : null;
  const limit = Number(req.query.limit ?? 50);
  const entries = await userAuth.listBillingLedger({ userId, limit });
  res.json({ entries });
});

adminApi.get('/llm-providers/catalog', requireAdmin, (_req, res) => {
  if (!llmProviderService) return res.status(503).json({ message: '未启用 LLM 配置' });
  res.json({ catalog: llmProviderService.catalog });
});

adminApi.get('/llm-providers/keys', requireAdmin, async (_req, res) => {
  if (!llmProviderService) return res.status(503).json({ message: '未启用 LLM 配置' });
  const keys = await llmProviderService.listKeys();
  res.json({ keys });
});

adminApi.post('/llm-providers/keys', requireAdmin, async (req, res) => {
  if (!llmProviderService) return res.status(503).json({ message: '未启用 LLM 配置' });
  const result = await llmProviderService.createKey(req.body ?? {});
  if (!result.ok) return res.status(400).json({ message: result.message });
  res.status(201).json({ key: result.key });
});

adminApi.patch('/llm-providers/keys/:keyId', requireAdmin, async (req, res) => {
  if (!llmProviderService) return res.status(503).json({ message: '未启用 LLM 配置' });
  const result = await llmProviderService.updateKey(req.params.keyId, req.body ?? {});
  if (!result.ok) return res.status(400).json({ message: result.message });
  res.json({ key: result.key });
});

adminApi.post('/llm-providers/keys/:keyId/select', requireAdmin, async (req, res) => {
  if (!llmProviderService) return res.status(503).json({ message: '未启用 LLM 配置' });
  const result = await llmProviderService.selectKey(req.params.keyId);
  if (!result.ok) return res.status(400).json({ message: result.message });
  res.json({ key: result.key });
});

adminApi.delete('/llm-providers/keys/:keyId', requireAdmin, async (req, res) => {
  if (!llmProviderService) return res.status(503).json({ message: '未启用 LLM 配置' });
  const result = await llmProviderService.deleteKey(req.params.keyId);
  if (!result.ok) return res.status(400).json({ message: result.message });
  res.json({ ok: true });
});

adminApi.post('/llm-providers/sync', requireAdmin, async (_req, res) => {
  if (!llmProviderService) return res.status(503).json({ message: '未启用 LLM 配置' });
  try {
    const result = await llmProviderService.syncSelectedToGoosed();
    res.json(result);
  } catch (err) {
    res.status(500).json({
      message: err instanceof Error ? err.message : '同步失败',
    });
  }
});

adminApi.get('/llm-providers/global', requireAdmin, async (_req, res) => {
  if (!llmProviderService) return res.status(503).json({ message: '未启用 LLM 配置' });
  const global = await llmProviderService.getGlobalSettings();
  res.json({ global });
});

adminApi.put('/llm-providers/global', requireAdmin, async (req, res) => {
  if (!llmProviderService) return res.status(503).json({ message: '未启用 LLM 配置' });
  const result = await llmProviderService.setGlobalModel(req.body?.model);
  if (!result.ok) return res.status(400).json({ message: result.message });
  res.json(result);
});

adminApi.post('/llm-providers/test', requireAdmin, async (req, res) => {
  if (!llmProviderService) return res.status(503).json({ message: '未启用 LLM 配置' });
  try {
    const result = await llmProviderService.testDraft(req.body ?? {});
    res.json(result);
  } catch (err) {
    res.status(500).json({
      ok: false,
      message: err instanceof Error ? err.message : '联通测试失败',
    });
  }
});

adminApi.post('/llm-providers/keys/:keyId/test', requireAdmin, async (req, res) => {
  if (!llmProviderService) return res.status(503).json({ message: '未启用 LLM 配置' });
  try {
    const result = await llmProviderService.testKey(req.params.keyId, req.body?.model);
    res.json(result);
  } catch (err) {
    res.status(500).json({
      ok: false,
      message: err instanceof Error ? err.message : '联通测试失败',
    });
  }
});

adminApi.get('/plaza/pending', requireAdmin, async (_req, res) => {
  if (!plazaPosts) return res.status(503).json({ message: 'Plaza 未启用' });
  const posts = await plazaPosts.listPendingPosts();
  res.json({ data: { posts } });
});

adminApi.post('/plaza/posts/:id/review', requireAdmin, async (req, res) => {
  if (!plazaPosts) return res.status(503).json({ message: 'Plaza 未启用' });
  try {
    const action = String(req.body?.action ?? 'approve');
    const reason = req.body?.reason ?? null;
    const result =
      plazaOps && req.currentUser?.id
        ? await plazaOps.reviewPostAsOps(req.currentUser.id, req.params.id, action, { reason })
        : await plazaPosts.reviewPost(req.params.id, action, { reason });
    res.json({ data: result });
  } catch (error) {
    const status = mapPlazaError(error);
    res.status(status).json({
      error: { code: error?.code ?? 'review_failed', message: error.message },
    });
  }
});

app.get('/auth/usage', async (req, res) => {
  await userAuthReady;
  if (!userAuth) return res.status(503).json({ message: '未启用用户系统' });
  const me = await userAuth.getMe(userToken(req));
  if (!me) return res.status(401).json({ message: '未登录' });
  const records = await userAuth.listUsageRecords({ userId: me.id, limit: 30 });
  res.json({ records });
});

app.get('/auth/billing/config', async (req, res) => {
  await userAuthReady;
  if (!userAuth || !rechargeService) {
    return res.status(503).json({ message: '未启用计费系统' });
  }
  const me = await userAuth.getMe(userToken(req));
  if (!me) return res.status(401).json({ message: '未登录' });
  const config = await rechargeService.getBillingConfig(me.id);
  return res.json(config);
});

app.post('/auth/billing/recharge-orders', jsonBody, async (req, res) => {
  await userAuthReady;
  if (!userAuth || !rechargeService) {
    return res.status(503).json({ message: '未启用计费系统' });
  }
  const me = await userAuth.getMe(userToken(req));
  if (!me) return res.status(401).json({ message: '未登录' });
  const amountCents = Number(req.body?.amountCents);
  const payScene = req.body?.payScene === 'h5' ? 'h5' : 'native';
  const result = await rechargeService.createOrder({
    userId: me.id,
    amountCents,
    payScene,
    clientIp: req.ip,
  });
  if (!result.ok) return res.status(400).json({ message: result.message });
  return res.status(201).json({ order: result.order });
});

app.get('/auth/billing/recharge-orders/:orderId', async (req, res) => {
  await userAuthReady;
  if (!userAuth || !rechargeService) {
    return res.status(503).json({ message: '未启用计费系统' });
  }
  const me = await userAuth.getMe(userToken(req));
  if (!me) return res.status(401).json({ message: '未登录' });
  const order = await rechargeService.getOrderForUser(me.id, req.params.orderId);
  if (!order) return res.status(404).json({ message: '订单不存在' });
  let balanceCents = null;
  if (order.status === 'paid') {
    const user = await userAuth.getUserById(me.id);
    balanceCents = user ? Number(user.balance_cents ?? 0) : null;
  }
  return res.json({ order, balanceCents });
});

const wechatNotifyBody = express.raw({ type: 'application/json', limit: '64kb' });
app.post('/webhooks/wechat-pay/notify', wechatNotifyBody, async (req, res) => {
  await userAuthReady;
  if (!rechargeService || !wechatPayClient?.enabled) {
    return res.status(503).json({ code: 'FAIL', message: '支付未启用' });
  }
  try {
    const bodyText = Buffer.isBuffer(req.body) ? req.body.toString('utf8') : String(req.body ?? '');
    await rechargeService.handleWechatNotify({ headers: req.headers, body: bodyText });
    return res.json({ code: 'SUCCESS', message: '成功' });
  } catch (err) {
    console.error('WeChat notify failed:', err);
    return res.status(500).json({ code: 'FAIL', message: err instanceof Error ? err.message : '处理失败' });
  }
});

app.use('/admin-api', adminApi);

// ============ Wiki API ============

function wikiCookie(token, secure) {
  const parts = [
    `${wikiAuth.COOKIE_NAME}=${encodeURIComponent(token)}`,
    'Path=/',
    'HttpOnly',
    'SameSite=Lax',
    'Max-Age=604800',
  ];
  if (secure) parts.push('Secure');
  return parts.join('; ');
}

function clearWikiCookie(secure) {
  const parts = [`${wikiAuth.COOKIE_NAME}=`, 'Path=/', 'HttpOnly', 'SameSite=Lax', 'Max-Age=0'];
  if (secure) parts.push('Secure');
  return parts.join('; ');
}

const wikiApi = express.Router();
wikiApi.use(jsonBody);

wikiApi.post('/auth/register', (req, res) => {
  const { username, password, displayName } = req.body || {};
  if (!username || !password) {
    return res.status(400).json({ message: '用户名和密码不能为空' });
  }
  const result = wikiAuth.register(username, password, displayName);
  if (!result.ok) return res.status(409).json({ message: result.message });
  return res.json({ ok: true, user: result.user });
});

wikiApi.post('/auth/login', (req, res) => {
  const { username, password } = req.body || {};
  if (!username || !password) {
    return res.status(400).json({ message: '用户名和密码不能为空' });
  }
  const result = wikiAuth.login(username, password);
  if (!result.ok) return res.status(401).json({ message: result.message });
  const secure = isSecureRequest(req);
  res.set('Set-Cookie', wikiCookie(result.token, secure));
  return res.json({ ok: true, user: result.user });
});

wikiApi.post('/auth/logout', (req, res) => {
  const cookies = parseCookies(req.get('cookie'));
  wikiAuth.revoke(cookies[wikiAuth.COOKIE_NAME]);
  res.set('Set-Cookie', clearWikiCookie(isSecureRequest(req)));
  return res.json({ ok: true });
});

wikiApi.get('/auth/me', (req, res) => {
  const cookies = parseCookies(req.get('cookie'));
  const session = wikiAuth.verify(cookies[wikiAuth.COOKIE_NAME]);
  if (!session) return res.json({ authenticated: false, user: null });
  const user = wikiAuth.getUser(session.username);
  return res.json({ authenticated: true, user });
});

function requireWikiAuth(req, res, next) {
  const cookies = parseCookies(req.get('cookie'));
  const session = wikiAuth.verify(cookies[wikiAuth.COOKIE_NAME]);
  if (!session) return res.status(401).json({ message: '未登录' });
  req.wikiUser = session;
  next();
}

wikiApi.get('/pages', requireWikiAuth, (req, res) => {
  const { q } = req.query;
  if (q) return res.json(wikiAuth.searchPages(req.wikiUser.username, q));
  res.json(wikiAuth.listPages(req.wikiUser.username));
});

wikiApi.get('/pages/:slug', requireWikiAuth, (req, res) => {
  const page = wikiAuth.getPage(req.wikiUser.username, req.params.slug);
  if (!page) return res.status(404).json({ message: '页面不存在' });
  res.json(page);
});

wikiApi.post('/pages/:slug', requireWikiAuth, (req, res) => {
  const { title, content, tags } = req.body || {};
  const page = wikiAuth.savePage(req.wikiUser.username, req.params.slug, title, content, tags);
  res.json(page);
});

wikiApi.delete('/pages/:slug', requireWikiAuth, (req, res) => {
  wikiAuth.deletePage(req.wikiUser.username, req.params.slug);
  res.json({ ok: true });
});

app.use('/wiki-api', wikiApi);

// ============ TKMind API proxy ============

const api = express.Router();
api.use(jsonBody);

api.use(async (req, res, next) => {
  await userAuthReady;
  if (req.path === '/status') return next();
  if (req.path.startsWith('/internal/agent/')) return next();

  const plazaPublic = isPlazaPublicRead(req.path, req.method);

  if (userAuth && tkmindProxy) {
    if (req.userSession) {
      const me = await userAuth.getMe(req.userToken);
      if (me) req.currentUser = me;
    }
    if (plazaPublic) return next();
    if (!req.userSession) {
      return res.status(401).json({ message: '未授权，请重新登录' });
    }
    const me = await userAuth.getMe(req.userToken);
    if (!me) return res.status(401).json({ message: '登录已过期' });
    req.currentUser = me;
    return next();
  }

  if (legacyAuth?.verify(legacySessionToken(req))) return next();
  return res.status(401).json({ message: '未授权，请重新登录' });
});

api.get('/status', async (_req, res, next) => {
  await userAuthReady;
  if (userAuth && tkmindProxy) {
    try {
      const upstream = await tkmindProxy.apiFetch('/status', { method: 'GET' });
      const text = await upstream.text();
      return res.status(upstream.status).send(text);
    } catch (err) {
      return res.status(502).json({ message: err instanceof Error ? err.message : '代理失败' });
    }
  }
  return next();
});

api.get('/mindspace/v1/space', async (req, res) => {
  if (!mindSpace || !ensureMindSpaceEnabled(res, req)) return;
  const space = await mindSpace.getSpace(req.currentUser.id);
  if (!space) return sendError(res, req, 404, 'resource_not_found', '用户空间不存在');
  return sendData(res, req, space);
});

api.get('/mindspace/v1/space/quota', async (req, res) => {
  if (!mindSpace) return res.status(503).json({ message: 'MindSpace 未启用' });
  const quota = await mindSpace.getQuota(req.currentUser.id);
  if (!quota) return res.status(404).json({ message: '用户空间不存在' });
  return res.json({ data: quota });
});

api.get('/mindspace/v1/space/categories', async (req, res) => {
  if (!mindSpace) return res.status(503).json({ message: 'MindSpace 未启用' });
  const categories = await mindSpace.listCategories(req.currentUser.id);
  if (!categories) return res.status(404).json({ message: '用户空间不存在' });
  return res.json({ data: categories });
});

api.get('/mindspace/v1/space/cleanup', async (req, res) => {
  if (!mindSpaceCleanup || !ensureMindSpaceEnabled(res, req)) return;
  try {
    const username = req.currentUser.username ?? req.currentUser.slug;
    const items = await mindSpaceCleanup.listCandidates(req.currentUser.id, username);
    const totalBytes = items.reduce((sum, item) => sum + item.sizeBytes, 0);
    return sendData(res, req, { items, totalBytes });
  } catch (error) {
    return mindSpaceError(res, req, error);
  }
});

api.post('/mindspace/v1/space/cleanup', async (req, res) => {
  if (!mindSpaceCleanup || !ensureMindSpaceEnabled(res, req)) return;
  try {
    const username = req.currentUser.username ?? req.currentUser.slug;
    const itemIds = Array.isArray(req.body?.item_ids) ? req.body.item_ids : [];
    const result = await mindSpaceCleanup.runCleanup(req.currentUser.id, username, itemIds);
    await mindSpaceAudit?.write({
      userId: req.currentUser.id,
      action: 'space.cleanup',
      objectType: 'space',
      objectId: req.currentUser.id,
      ip: req.ip,
      detail: { removedCount: result.removedCount, freedBytes: result.freedBytes },
    });
    return sendData(res, req, result);
  } catch (error) {
    return mindSpaceError(res, req, error);
  }
});

function isPlazaPublicRead(path, method) {
  if (method !== 'GET' || !path.startsWith('/plaza/v1/')) return false;
  return (
    path === '/plaza/v1/feed' ||
    path === '/plaza/v1/categories' ||
    path === '/plaza/v1/seo/sitemap' ||
    /^\/plaza\/v1\/posts\/[^/]+$/.test(path) ||
    /^\/plaza\/v1\/posts\/[^/]+\/comments$/.test(path) ||
    /^\/plaza\/v1\/users\/[^/]+$/.test(path) ||
    /^\/plaza\/v1\/users\/[^/]+\/posts$/.test(path)
  );
}

function ensurePlazaInteractions(res, req) {
  if (!plazaInteractions) {
    sendError(res, req, 503, 'plaza_unavailable', 'Plaza 未启用');
    return false;
  }
  return true;
}

function plazaRouteError(res, req, error) {
  const status = mapPlazaError(error);
  const code = error?.code ?? 'internal_error';
  const message = error instanceof Error ? error.message : 'Plaza 请求失败';
  return sendError(res, req, status, code, message, error?.details);
}

function ensurePlazaEnabled(res, req) {
  if (!plazaPosts) {
    sendError(res, req, 503, 'plaza_unavailable', 'Plaza 未启用');
    return false;
  }
  return true;
}

function plazaClientIp(req) {
  const forwarded = req.headers['x-forwarded-for'];
  if (typeof forwarded === 'string' && forwarded.length > 0) {
    return forwarded.split(',')[0].trim();
  }
  return req.ip;
}

function makeRequireOps(minRole = 'reviewer') {
  return async (req, res, next) => {
    if (!plazaOps) return sendError(res, req, 503, 'plaza_unavailable', 'Plaza 未启用');
    if (!req.currentUser) return sendError(res, req, 401, 'unauthorized', '未授权，请重新登录');
    const role = await plazaOps.loadOperatorRole(req.currentUser.id);
    if (!hasOpsRole(role, minRole)) {
      return sendError(res, req, 403, 'OPS_PERMISSION_DENIED', '无运营权限');
    }
    req.opsRole = role;
    return next();
  };
}

const opsApi = express.Router();
opsApi.use(jsonBody);
opsApi.use(makeRequireOps('reviewer'));

opsApi.get('/review/queue', async (req, res) => {
  try {
    const queue = await plazaOps.listReviewQueue({
      status: req.query.status ?? 'pending_review',
      cursor: req.query.cursor ?? null,
      limit: req.query.limit,
      keyword: req.query.keyword ?? null,
    });
    return sendData(res, req, queue);
  } catch (error) {
    return plazaRouteError(res, req, error);
  }
});

opsApi.post('/review/posts/:id', async (req, res) => {
  try {
    const result = await plazaOps.reviewPostAsOps(req.currentUser.id, req.params.id, req.body?.action, {
      reason: req.body?.reason ?? null,
    });
    return sendData(res, req, { post: result });
  } catch (error) {
    return plazaRouteError(res, req, error);
  }
});

opsApi.post('/review/batch', makeRequireOps('editor'), async (req, res) => {
  try {
    const result = await plazaOps.batchReviewPosts(req.currentUser.id, req.body ?? {});
    return sendData(res, req, result);
  } catch (error) {
    return plazaRouteError(res, req, error);
  }
});

opsApi.get('/reports', async (req, res) => {
  try {
    return sendData(res, req, await plazaOps.listReports({ status: req.query.status ?? 'pending' }));
  } catch (error) {
    return plazaRouteError(res, req, error);
  }
});

opsApi.post('/reports/:id/process', async (req, res) => {
  try {
    const result = await plazaOps.processReport(req.currentUser.id, req.params.id, req.body ?? {});
    return sendData(res, req, { report: result });
  } catch (error) {
    return plazaRouteError(res, req, error);
  }
});

opsApi.get('/featured', makeRequireOps('editor'), async (req, res) => {
  try {
    return sendData(res, req, await plazaOps.listFeatured());
  } catch (error) {
    return plazaRouteError(res, req, error);
  }
});

opsApi.post('/featured', makeRequireOps('editor'), async (req, res) => {
  try {
    const result = await plazaOps.setFeatured(req.currentUser.id, req.body ?? {});
    return sendData(res, req, { featured: result }, 201);
  } catch (error) {
    return plazaRouteError(res, req, error);
  }
});

opsApi.delete('/featured/:id', makeRequireOps('editor'), async (req, res) => {
  try {
    const result = await plazaOps.removeFeatured(req.currentUser.id, req.params.id);
    return sendData(res, req, { featured: result });
  } catch (error) {
    return plazaRouteError(res, req, error);
  }
});

opsApi.get('/analytics/overview', makeRequireOps('ops_admin'), async (req, res) => {
  try {
    return sendData(res, req, await plazaOps.getAnalyticsOverview());
  } catch (error) {
    return plazaRouteError(res, req, error);
  }
});

opsApi.get('/creators', async (req, res) => {
  try {
    return sendData(res, req, await plazaOps.listCreators({ keyword: req.query.keyword ?? null }));
  } catch (error) {
    return plazaRouteError(res, req, error);
  }
});

opsApi.patch('/creators/:userId', async (req, res) => {
  try {
    const result = await plazaOps.updateCreator(req.currentUser.id, req.params.userId, req.body ?? {});
    return sendData(res, req, { creator: result });
  } catch (error) {
    return plazaRouteError(res, req, error);
  }
});

function mindSpaceError(res, req, error) {
  const statusByCode = {
    invalid_filename: 400,
    invalid_file_size: 400,
    category_not_uploadable: 400,
    file_size_mismatch: 409,
    invalid_upload_state: 409,
    file_too_large: 413,
    unsupported_file_type: 415,
    category_not_found: 404,
    upload_not_found: 404,
    asset_not_found: 404,
    asset_in_use: 409,
    page_not_found: 404,
    upload_expired: 410,
    quota_exceeded: 429,
    public_page_limit_exceeded: 429,
    space_unavailable: 423,
    invalid_page_input: 400,
    page_content_too_large: 413,
    source_message_not_found: 404,
    invalid_source_message: 409,
    version_conflict: 409,
    slug_conflict: 409,
    invalid_state_transition: 409,
    invalid_publish_input: 400,
    publication_not_found: 404,
    security_scan_required: 422,
    security_ack_required: 422,
    security_risk_blocked: 422,
    invalid_agent_job_input: 400,
    invalid_agent_job_output: 400,
    agent_job_not_found: 404,
    agent_job_token_invalid: 401,
    agent_job_expired: 410,
    feature_disabled: 503,
  };
  const code = error?.code ?? 'internal_error';
  const status = statusByCode[code] ?? 500;
  const message = status === 500 ? 'MindSpace 服务异常' : error.message;
  return sendError(res, req, status, code, message, error?.details);
}

function ensureMindSpaceEnabled(res, req, { upload = false, agent = false } = {}) {
  try {
    assertMindSpaceRoute(msFlags, upload ? 'upload' : agent ? 'agent' : undefined);
    return true;
  } catch (error) {
    mindSpaceError(res, req, error);
    return false;
  }
}

function bearerToken(req) {
  const header = req.get('authorization') ?? '';
  const [scheme, value] = header.split(/\s+/, 2);
  if (scheme?.toLowerCase() !== 'bearer' || !value) return null;
  return value.trim();
}

function requireInternalAgentSecret(req, res) {
  if (bearerToken(req) === INTERNAL_AGENT_SECRET) return true;
  sendError(res, req, 401, 'agent_job_token_invalid', '内部 Agent 凭据无效');
  return false;
}

api.post('/mindspace/v1/agent/jobs', async (req, res) => {
  if (!mindSpaceAgentJobs || !ensureMindSpaceEnabled(res, req, { agent: true })) return;
  try {
    const job = await mindSpaceAgentJobs.createJob(req.currentUser.id, {
      jobType: req.body?.job_type,
      instruction: req.body?.instruction,
      allowedAssetIds: req.body?.allowed_asset_ids,
      outputCategoryId: req.body?.output_category_id,
      outputType: req.body?.output_type,
      idempotencyKey: req.body?.idempotency_key,
      locale: req.body?.locale,
      timezone: req.body?.timezone,
      capabilities: req.body?.capabilities,
    });
    await mindSpaceAudit?.write({
      userId: req.currentUser.id,
      action: 'agent_access',
      objectType: 'agent_job',
      objectId: job.id,
      ip: req.ip,
      detail: {
        jobType: job.jobType,
        assetIds: job.assets.map((asset) => asset.assetId),
      },
    });
    return sendData(res, req, job, 201);
  } catch (error) {
    return mindSpaceError(res, req, error);
  }
});

api.get('/mindspace/v1/agent/jobs/:jobId', async (req, res) => {
  if (!mindSpaceAgentJobs || !ensureMindSpaceEnabled(res, req, { agent: true })) return;
  try {
    return sendData(res, req, await mindSpaceAgentJobs.getJob(req.currentUser.id, req.params.jobId));
  } catch (error) {
    return mindSpaceError(res, req, error);
  }
});

api.get('/mindspace/v1/agent/jobs', async (req, res) => {
  if (!mindSpaceAgentJobs || !ensureMindSpaceEnabled(res, req, { agent: true })) return;
  try {
    const result = await mindSpaceAgentJobs.listJobs(req.currentUser.id, {
      limit: Number(req.query.limit ?? 10),
      offset: Number(req.query.offset ?? 0),
    });
    return res.json({
      data: result.items,
      page: {
        total: result.total,
        offset: result.offset,
        limit: result.limit,
        has_more: result.hasMore,
      },
      request_id: req.requestId,
    });
  } catch (error) {
    return mindSpaceError(res, req, error);
  }
});

api.post('/mindspace/v1/agent/jobs/:jobId/cancel', async (req, res) => {
  if (!mindSpaceAgentJobs || !ensureMindSpaceEnabled(res, req, { agent: true })) return;
  try {
    return sendData(
      res,
      req,
      await mindSpaceAgentJobs.cancelJob(req.currentUser.id, req.params.jobId),
    );
  } catch (error) {
    return mindSpaceError(res, req, error);
  }
});

api.post('/mindspace/v1/agent/jobs/:jobId/retry', async (req, res) => {
  if (!mindSpaceAgentJobs || !ensureMindSpaceEnabled(res, req, { agent: true })) return;
  try {
    return sendData(
      res,
      req,
      await mindSpaceAgentJobs.retryJob(req.currentUser.id, req.params.jobId),
    );
  } catch (error) {
    return mindSpaceError(res, req, error);
  }
});

api.post('/mindspace/v1/agent/jobs/:jobId/run', async (req, res) => {
  if (
    !mindSpaceAgentJobs ||
    !mindSpaceAgentRunner ||
    !ensureMindSpaceEnabled(res, req, { agent: true })
  ) {
    return;
  }
  try {
    const job = await mindSpaceAgentJobs.getJob(req.currentUser.id, req.params.jobId);
    if (job.status !== 'queued') {
      return sendData(res, req, job);
    }
    void mindSpaceAgentRunner.runJob(req.params.jobId).catch((error) => {
      console.error('MindSpace agent job run failed:', error);
    });
    return sendData(res, req, { started: true, jobId: req.params.jobId }, 202);
  } catch (error) {
    return mindSpaceError(res, req, error);
  }
});

api.post('/internal/agent/jobs/:jobId/claim', async (req, res) => {
  if (!mindSpaceAgentJobs || !ensureMindSpaceEnabled(res, req, { agent: true })) return;
  if (!requireInternalAgentSecret(req, res)) return;
  try {
    return sendData(res, req, await mindSpaceAgentJobs.claimJob(req.params.jobId));
  } catch (error) {
    return mindSpaceError(res, req, error);
  }
});

api.get('/internal/agent/jobs/:jobId/assets/:assetId', async (req, res) => {
  if (!mindSpaceAgentJobs || !ensureMindSpaceEnabled(res, req, { agent: true })) return;
  try {
    const asset = await mindSpaceAgentJobs.getAssetForJob(
      req.params.jobId,
      bearerToken(req),
      req.params.assetId,
    );
    res.set('Content-Type', asset.mimeType);
    res.set('Content-Disposition', `inline; filename="${encodeURIComponent(asset.displayName)}"`);
    res.set('Cache-Control', 'private, no-store');
    res.setHeader('X-Request-Id', req.requestId);
    return res.send(await fs.promises.readFile(asset.path));
  } catch (error) {
    return mindSpaceError(res, req, error);
  }
});

api.post('/internal/agent/jobs/:jobId/heartbeat', async (req, res) => {
  if (!mindSpaceAgentJobs || !ensureMindSpaceEnabled(res, req, { agent: true })) return;
  try {
    return sendData(
      res,
      req,
      await mindSpaceAgentJobs.heartbeat(req.params.jobId, bearerToken(req), {
        stage: req.body?.stage,
        message: req.body?.message,
      }),
    );
  } catch (error) {
    return mindSpaceError(res, req, error);
  }
});

api.post('/internal/agent/jobs/:jobId/complete', async (req, res) => {
  if (!mindSpaceAgentJobs || !ensureMindSpaceEnabled(res, req, { agent: true })) return;
  try {
    const job = await mindSpaceAgentJobs.completeJob(req.params.jobId, bearerToken(req), {
      status: req.body?.status,
      errorCode: req.body?.error_code,
      errorMessage: req.body?.error_message,
      outputType: req.body?.output_type,
      title: req.body?.title,
      summary: req.body?.summary,
      content: req.body?.content,
      contentFormat: req.body?.content_format,
      pageType: req.body?.page_type,
      templateId: req.body?.template_id,
      sourceAssetIds: req.body?.source_asset_ids,
    });
    return sendData(res, req, job);
  } catch (error) {
    return mindSpaceError(res, req, error);
  }
});

api.post('/mindspace/v1/uploads', async (req, res) => {
  if (!mindSpaceAssets || !ensureMindSpaceEnabled(res, req, { upload: true })) return;
  try {
    const upload = await mindSpaceAssets.createUpload(req.currentUser.id, {
      categoryId: req.body?.category_id,
      filename: req.body?.filename,
      sizeBytes: req.body?.size_bytes,
      declaredMimeType: req.body?.declared_mime_type,
    });
    return sendData(res, req, upload, 201);
  } catch (error) {
    return mindSpaceError(res, req, error);
  }
});

api.put('/mindspace/v1/uploads/:uploadId/content', rawUploadBody, async (req, res) => {
  if (!mindSpaceAssets) return res.status(503).json({ message: 'MindSpace 未启用' });
  try {
    const result = await mindSpaceAssets.writeUploadContent(
      req.currentUser.id,
      req.params.uploadId,
      req.body,
    );
    return res.json({ data: result });
  } catch (error) {
    return mindSpaceError(res, req, error);
  }
});

api.post('/mindspace/v1/uploads/:uploadId/complete', async (req, res) => {
  if (!mindSpaceAssets) return res.status(503).json({ message: 'MindSpace 未启用' });
  try {
    const asset = await mindSpaceAssets.completeUpload(
      req.currentUser.id,
      req.params.uploadId,
    );
    return res.status(201).json({ data: asset });
  } catch (error) {
    return mindSpaceError(res, req, error);
  }
});

api.delete('/mindspace/v1/uploads/:uploadId', async (req, res) => {
  if (!mindSpaceAssets) return res.status(503).json({ message: 'MindSpace 未启用' });
  try {
    const result = await mindSpaceAssets.cancelUpload(
      req.currentUser.id,
      req.params.uploadId,
    );
    return res.json({ data: result });
  } catch (error) {
    return mindSpaceError(res, req, error);
  }
});

api.get('/mindspace/v1/assets', async (req, res) => {
  if (!mindSpaceAssets) return res.status(503).json({ message: 'MindSpace 未启用' });
  try {
    const assets = await mindSpaceAssets.listAssets(req.currentUser.id, {
      categoryId: typeof req.query.category_id === 'string' ? req.query.category_id : undefined,
      categoryCode:
        typeof req.query.category_code === 'string' ? req.query.category_code : undefined,
    });
    return res.json({ data: assets, page: { next_cursor: null, has_more: false } });
  } catch (error) {
    return mindSpaceError(res, req, error);
  }
});

api.get('/mindspace/v1/assets/:assetId/download', async (req, res) => {
  if (!mindSpaceAssets || !ensureMindSpaceEnabled(res, req)) return;
  try {
    const { asset, path: assetPath } = await mindSpaceAssets.readAsset(
      req.currentUser.id,
      req.params.assetId,
    );
    await mindSpaceAudit?.write({
      userId: req.currentUser.id,
      action: 'asset.download',
      objectType: 'asset',
      objectId: req.params.assetId,
      ip: req.ip,
      riskLevel: asset.riskLevel,
    });
    res.type(asset.mimeType);
    const inline =
      req.query.inline === '1' ||
      req.query.disposition === 'inline' ||
      req.get('sec-fetch-dest') === 'iframe';
    res.set(
      'Content-Disposition',
      inline
        ? `inline; filename*=UTF-8''${encodeURIComponent(asset.filename)}`
        : `attachment; filename*=UTF-8''${encodeURIComponent(asset.filename)}`,
    );
    res.setHeader('X-Request-Id', req.requestId);
    return res.sendFile(assetPath);
  } catch (error) {
    await mindSpaceAudit?.write({
      userId: req.currentUser.id,
      action: 'asset.download',
      objectType: 'asset',
      objectId: req.params.assetId,
      ip: req.ip,
      result: 'denied',
      riskLevel: error?.code === 'security_risk_blocked' ? 'high' : null,
    });
    return mindSpaceError(res, req, error);
  }
});

api.get('/mindspace/v1/assets/:assetId/thumbnail', async (req, res) => {
  if (!mindSpaceAssets || !ensureMindSpaceEnabled(res, req)) return;
  try {
    const svg = await mindSpaceAssets.renderAssetThumbnail(req.currentUser.id, req.params.assetId);
    res.set('Content-Type', 'image/svg+xml; charset=utf-8');
    res.set('Cache-Control', 'private, max-age=300');
    res.setHeader('X-Request-Id', req.requestId);
    return res.send(svg);
  } catch (error) {
    return mindSpaceError(res, req, error);
  }
});

api.get('/mindspace/v1/assets/:assetId/preview', async (req, res) => {
  if (!mindSpaceAssets || !ensureMindSpaceEnabled(res, req)) return;
  try {
    const html = await mindSpaceAssets.renderAssetPreview(req.currentUser.id, req.params.assetId);
    res.set('Content-Type', 'text/html; charset=utf-8');
    res.set('Cache-Control', 'private, no-store');
    res.setHeader('X-Request-Id', req.requestId);
    return res.send(html);
  } catch (error) {
    return mindSpaceError(res, req, error);
  }
});

api.post('/mindspace/v1/pages/from-asset', async (req, res) => {
  if (!mindSpacePages || !mindSpaceAssets) return res.status(503).json({ message: 'MindSpace 未启用' });
  try {
    const { asset, path: assetPath } = await mindSpaceAssets.readAsset(
      req.currentUser.id,
      req.body?.asset_id,
    );
    const content = await fs.promises.readFile(assetPath, 'utf8');
    const contentFormat = asset.mimeType === 'text/html' ? 'html' : 'markdown';
    const page = await mindSpacePages.createFromChat(
      req.currentUser.id,
      {
        title: req.body?.title || asset.displayName,
        summary: req.body?.summary,
        content,
        contentFormat,
        templateId: req.body?.template_id,
        categoryCode: 'draft',
      },
      {
        assetId: asset.id,
        snapshot: {
          source_asset_id: asset.id,
          source_category: asset.categoryCode,
          content_mode: contentFormat,
        },
      },
    );
    return res.status(201).json({ data: { kind: 'page', categoryCode: 'draft', page } });
  } catch (error) {
    return mindSpaceError(res, req, error);
  }
});

api.delete('/mindspace/v1/assets/:assetId', async (req, res) => {
  if (!mindSpaceAssets || !ensureMindSpaceEnabled(res, req)) return;
  try {
    const result = await mindSpaceAssets.deleteAsset(req.currentUser.id, req.params.assetId);
    await mindSpaceAudit?.write({
      userId: req.currentUser.id,
      action: 'asset.delete',
      objectType: 'asset',
      objectId: req.params.assetId,
      ip: req.ip,
    });
    return sendData(res, req, result);
  } catch (error) {
    return mindSpaceError(res, req, error);
  }
});

function messageText(message) {
  return (message?.content ?? [])
    .filter((item) => item?.type === 'text' && typeof item.text === 'string')
    .map((item) => item.text)
    .join('')
    .trim();
}

async function resolveOwnedAssistantMessage(userId, sessionId, messageId) {
  if (!sessionId || !messageId) {
    throw Object.assign(new Error('缺少来源会话或消息'), {
      code: 'invalid_page_input',
    });
  }
  if (!(await userAuth.ownsSession(userId, sessionId))) {
    throw Object.assign(new Error('来源会话不存在'), { code: 'source_message_not_found' });
  }
  const upstream = await tkmindProxy.apiFetch(`/sessions/${encodeURIComponent(sessionId)}`, {
    method: 'GET',
  });
  if (!upstream.ok) {
    throw Object.assign(new Error('无法读取来源会话'), { code: 'source_message_not_found' });
  }
  const session = await upstream.json();
  const message = (session.conversation ?? []).find((item) => item.id === messageId);
  if (!message) {
    throw Object.assign(new Error('来源消息不存在'), { code: 'source_message_not_found' });
  }
  const content = messageText(message);
  if (message.role !== 'assistant' || !message.metadata?.userVisible || !content) {
    throw Object.assign(new Error('只有可见的 AI 文本消息可以保存为页面'), {
      code: 'invalid_source_message',
    });
  }
  return { session, message, content };
}

const SAVE_TARGET_CATEGORIES = new Set(['draft', 'oa', 'private', 'public']);

function assertPrivateSaveAllowed(categoryCode, privacyScan, acknowledgedFindingIds) {
  if (categoryCode !== 'private') return;
  if (!privacyScan.allowed) {
    throw Object.assign(new Error('内容含阻断级敏感信息，不能保存到私人区'), {
      code: 'security_risk_blocked',
      details: { findings: privacyScan.findings },
    });
  }
  if (privacyScan.findings.length === 0) return;
  const acknowledged = new Set((acknowledgedFindingIds ?? []).map(String));
  const missing = privacyScan.findings.filter((finding) => !acknowledged.has(finding.id));
  if (missing.length > 0) {
    throw Object.assign(new Error('保存到私人区前需确认敏感信息提示'), {
      code: 'private_ack_required',
      details: { findings: missing },
    });
  }
}

api.post('/mindspace/v1/pages/analyze-chat-save', async (req, res) => {
  if (!mindSpacePages) return res.status(503).json({ message: 'MindSpace 未启用' });
  try {
    const source = await resolveOwnedAssistantMessage(
      req.currentUser.id,
      req.body?.session_id,
      req.body?.message_id,
    );
    const analysis = analyzeChatMessageForSave({
      content: source.content,
      username: req.currentUser.username,
      h5Root: __dirname,
      selectedLinkIndex: Number(req.body?.selected_link_index ?? 0),
    });
    let resolvedHtml = null;
    if (analysis.contentMode === 'static_html') {
      try {
        resolvedHtml = await resolveStaticHtmlContent(analysis);
      } catch {
        resolvedHtml = null;
      }
    }
    return sendData(res, req, {
      contentMode: analysis.contentMode,
      links: analysis.links,
      selectedLinkIndex: analysis.selectedLink
        ? analysis.links.findIndex((link) => link.publicUrl === analysis.selectedLink.publicUrl)
        : -1,
      suggestedTitle: resolvedHtml?.suggestedTitle ?? analysis.suggestedTitle,
      suggestedSummary: resolvedHtml?.suggestedSummary ?? analysis.suggestedSummary,
      previewUrl: analysis.previewUrl,
      relativePath: analysis.relativePath,
      filename: analysis.filename,
      hasHtmlContent: Boolean(resolvedHtml),
      privacyScan: scanContent(resolvedHtml?.content ?? source.content),
    });
  } catch (error) {
    return mindSpaceError(res, req, error);
  }
});

api.post('/mindspace/v1/pages/save-from-chat', async (req, res) => {
  if (!mindSpacePages || !mindSpaceAssets) {
    return res.status(503).json({ message: 'MindSpace 未启用' });
  }
  try {
    const categoryCode = String(req.body?.category_code ?? 'draft');
    if (!SAVE_TARGET_CATEGORIES.has(categoryCode)) {
      throw Object.assign(new Error('无效的保存目标'), { code: 'invalid_category_code' });
    }
    const source = await resolveOwnedAssistantMessage(
      req.currentUser.id,
      req.body?.session_id,
      req.body?.message_id,
    );
    const analysis = analyzeChatMessageForSave({
      content: source.content,
      username: req.currentUser.username,
      h5Root: __dirname,
      selectedLinkIndex: Number(req.body?.selected_link_index ?? 0),
    });
    const snapshot = {
      session_name: source.session.name,
      message_created: source.message.created,
      role: source.message.role,
      content_mode: analysis.contentMode,
      public_url: analysis.previewUrl,
      relative_path: analysis.relativePath,
    };

    let resolvedHtml = null;
    if (analysis.contentMode === 'static_html') {
      resolvedHtml = await resolveStaticHtmlContent(analysis).catch(() => null);
    }
    const privacyScan = scanContent(resolvedHtml?.content ?? source.content);
    assertPrivateSaveAllowed(categoryCode, privacyScan, req.body?.acknowledged_finding_ids);

    if (categoryCode !== 'draft') {
      let buffer;
      let filename;
      let displayName = req.body?.title;
      if (analysis.contentMode === 'static_html') {
        if (!resolvedHtml) {
          throw Object.assign(new Error('无法读取链接页面内容'), { code: 'static_page_not_found' });
        }
        buffer = Buffer.from(resolvedHtml.content, 'utf8');
        filename = resolvedHtml.filename;
        displayName = displayName || resolvedHtml.suggestedTitle;
      } else {
        buffer = Buffer.from(source.content, 'utf8');
        filename = `${String(displayName || 'chat-export')
          .replace(/[^\w\u4e00-\u9fff-]+/g, '-')
          .slice(0, 48) || 'chat-export'}.md`;
      }
      const asset = await mindSpaceAssets.createChatAsset(req.currentUser.id, {
        categoryCode,
        buffer,
        filename,
        displayName,
        sourceType: 'chat',
      });
      return res.status(201).json({
        data: {
          kind: 'asset',
          categoryCode,
          asset,
        },
      });
    }

    let pageInput = {
      title: req.body?.title,
      summary: req.body?.summary,
      templateId: req.body?.template_id,
      pageType: req.body?.page_type,
      categoryCode: 'draft',
    };
    if (analysis.contentMode === 'static_html') {
      if (!resolvedHtml) {
        throw Object.assign(new Error('无法读取链接页面内容'), { code: 'static_page_not_found' });
      }
      pageInput = {
        ...pageInput,
        title: req.body?.title || resolvedHtml.suggestedTitle,
        summary: req.body?.summary || resolvedHtml.suggestedSummary,
        content: resolvedHtml.content,
        contentFormat: 'html',
        pageType: 'html',
      };
    } else {
      pageInput = {
        ...pageInput,
        content: source.content,
        contentFormat: 'markdown',
      };
    }

    if (analysis.contentMode === 'static_html' && resolvedHtml?.content && analysis.relativePath) {
      const publishDir = resolvePublishDir(__dirname, req.currentUser);
      await ensureWorkspaceHtmlThumbnail(publishDir, analysis.relativePath, resolvedHtml.content, {
        title: pageInput.title,
        subtitle: pageInput.summary,
      }).catch(() => {});
    }

    const page = await mindSpacePages.createFromChat(req.currentUser.id, pageInput, {
      sessionId: req.body.session_id,
      messageId: req.body.message_id,
      snapshot,
    });
    return res.status(201).json({ data: { kind: 'page', categoryCode: 'draft', page } });
  } catch (error) {
    return mindSpaceError(res, req, error);
  }
});

api.post('/mindspace/v1/pages', async (req, res) => {
  if (!mindSpacePages) return res.status(503).json({ message: 'MindSpace 未启用' });
  try {
    const page = await mindSpacePages.createPage(req.currentUser.id, {
      title: req.body?.title,
      summary: req.body?.summary,
      content: req.body?.content,
      contentFormat: req.body?.content_format === 'html' ? 'html' : undefined,
      templateId: req.body?.template_id,
      pageType: req.body?.page_type,
      categoryCode: req.body?.category_code,
    });
    return res.status(201).json({ data: page });
  } catch (error) {
    return mindSpaceError(res, req, error);
  }
});

api.get('/mindspace/v1/pages', async (req, res) => {
  if (!mindSpacePages) return res.status(503).json({ message: 'MindSpace 未启用' });
  try {
    const pages = await mindSpacePages.listPages(req.currentUser.id, {
      status: typeof req.query.status === 'string' ? req.query.status : undefined,
    });
    return res.json({ data: pages, page: { next_cursor: null, has_more: false } });
  } catch (error) {
    return mindSpaceError(res, req, error);
  }
});

api.get('/mindspace/v1/pages/:pageId', async (req, res) => {
  if (!mindSpacePages) return res.status(503).json({ message: 'MindSpace 未启用' });
  try {
    const [page, versions, publication] = await Promise.all([
      mindSpacePages.getPage(req.currentUser.id, req.params.pageId),
      mindSpacePages.listVersions(req.currentUser.id, req.params.pageId),
      mindSpacePublications?.getCurrent(req.currentUser.id, req.params.pageId) ?? null,
    ]);
    return res.json({ data: { ...page, versions, publication } });
  } catch (error) {
    return mindSpaceError(res, req, error);
  }
});

api.delete('/mindspace/v1/pages/:pageId', async (req, res) => {
  if (!mindSpacePages || !ensureMindSpaceEnabled(res, req)) return;
  try {
    const result = await mindSpacePages.deletePage(req.currentUser.id, req.params.pageId);
    await mindSpaceAudit?.write({
      userId: req.currentUser.id,
      action: 'page.delete',
      objectType: 'page',
      objectId: req.params.pageId,
      ip: req.ip,
      detail: {
        offlinedPublicationCount: result.offlinedPublicationCount,
        deletedAssetCount: result.deletedAssetCount,
        freedBytes: result.freedBytes,
      },
    });
    return sendData(res, req, result);
  } catch (error) {
    return mindSpaceError(res, req, error);
  }
});

api.get('/mindspace/v1/pages/:pageId/delete-preview', async (req, res) => {
  if (!mindSpacePages || !ensureMindSpaceEnabled(res, req)) return;
  try {
    return sendData(res, req, await mindSpacePages.getDeletePreview(req.currentUser.id, req.params.pageId));
  } catch (error) {
    return mindSpaceError(res, req, error);
  }
});

api.put('/mindspace/v1/pages/:pageId', async (req, res) => {
  if (!mindSpacePages) return res.status(503).json({ message: 'MindSpace 未启用' });
  try {
    const page = await mindSpacePages.updatePage(req.currentUser.id, req.params.pageId, {
      expectedVersion: req.body?.expected_version,
      title: req.body?.title,
      summary: req.body?.summary,
      content: req.body?.content,
      templateId: req.body?.template_id,
      pageType: req.body?.page_type,
      changeNote: req.body?.change_note,
    });
    return res.json({ data: page });
  } catch (error) {
    return mindSpaceError(res, req, error);
  }
});

api.get('/mindspace/v1/pages/:pageId/thumbnail', async (req, res) => {
  if (!mindSpacePages) return res.status(503).json({ message: 'MindSpace 未启用' });
  try {
    const svg = await mindSpacePages.renderThumbnail(req.currentUser.id, req.params.pageId);
    res.set('Content-Type', 'image/svg+xml; charset=utf-8');
    res.set('Cache-Control', 'private, max-age=300');
    res.setHeader('X-Request-Id', req.requestId);
    return res.send(svg);
  } catch (error) {
    return mindSpaceError(res, req, error);
  }
});

api.get('/mindspace/v1/pages/:pageId/preview', async (req, res) => {
  if (!mindSpacePages) return res.status(503).json({ message: 'MindSpace 未启用' });
  try {
    const { html, contentFormat } = await mindSpacePages.renderPreview(
      req.currentUser.id,
      req.params.pageId,
    );
    res.set('Content-Type', 'text/html; charset=utf-8');
    res.set(
      'Content-Security-Policy',
      pageInternals.previewContentSecurityPolicy(contentFormat),
    );
    res.set('Cache-Control', 'private, no-store');
    res.set('X-Content-Type-Options', 'nosniff');
    return res.send(html);
  } catch (error) {
    return mindSpaceError(res, req, error);
  }
});

api.post('/mindspace/v1/pages/:pageId/publish-check', async (req, res) => {
  if (!mindSpacePublications) return res.status(503).json({ message: 'MindSpace 未启用' });
  try {
    const result = await mindSpacePublications.check(req.currentUser.id, req.params.pageId, {
      pageVersionId: req.body?.page_version_id,
      accessMode: req.body?.access_mode,
      urlSlug: req.body?.url_slug,
      password: req.body?.password,
      expiresAt: req.body?.expires_at,
    });
    return sendData(res, req, result);
  } catch (error) {
    return mindSpaceError(res, req, error);
  }
});

api.post('/mindspace/v1/pages/:pageId/redacted-copy', async (req, res) => {
  if (!mindSpacePages) return res.status(503).json({ message: 'MindSpace 未启用' });
  try {
    const result = await mindSpacePages.createRedactedCopy(req.currentUser.id, req.params.pageId, {
      pageVersionId: req.body?.page_version_id,
    });
    await mindSpaceAudit?.write({
      userId: req.currentUser.id,
      action: 'page.redacted_copy',
      objectType: 'page',
      objectId: result.page.id,
      ip: req.ip,
      riskLevel: result.originalScan.riskLevel,
    });
    return sendData(res, req, result, 201);
  } catch (error) {
    return mindSpaceError(res, req, error);
  }
});

api.post('/mindspace/v1/pages/:pageId/publish', async (req, res) => {
  if (!mindSpacePublications) return res.status(503).json({ message: 'MindSpace 未启用' });
  try {
    const publication = await mindSpacePublications.publish(
      req.currentUser.id,
      req.params.pageId,
      {
        pageVersionId: req.body?.page_version_id,
        accessMode: req.body?.access_mode,
        urlSlug: req.body?.url_slug,
        password: req.body?.password,
        expiresAt: req.body?.expires_at,
        acknowledgedFindingIds: req.body?.acknowledged_finding_ids,
      },
    );
    await mindSpaceAudit?.write({
      userId: req.currentUser.id,
      action: 'page.publish',
      objectType: 'publication',
      objectId: publication.id,
      ip: req.ip,
    });
    return sendData(res, req, publication, 201);
  } catch (error) {
    return mindSpaceError(res, req, error);
  }
});

api.post('/mindspace/v1/publications/:publicationId/offline', async (req, res) => {
  if (!mindSpacePublications) return res.status(503).json({ message: 'MindSpace 未启用' });
  try {
    const publication = await mindSpacePublications.offline(
      req.currentUser.id,
      req.params.publicationId,
    );
    await mindSpaceAudit?.write({
      userId: req.currentUser.id,
      action: 'page.offline',
      objectType: 'publication',
      objectId: req.params.publicationId,
      ip: req.ip,
    });
    return sendData(res, req, publication);
  } catch (error) {
    return mindSpaceError(res, req, error);
  }
});

api.get('/mindspace/v1/publications/:publicationId/stats', async (req, res) => {
  if (!mindSpacePublications) return res.status(503).json({ message: 'MindSpace 未启用' });
  try {
    return sendData(
      res,
      req,
      await mindSpacePublications.getStats(
        req.currentUser.id,
        req.params.publicationId,
      ),
    );
  } catch (error) {
    return mindSpaceError(res, req, error);
  }
});

api.get('/plaza/v1/categories', async (req, res) => {
  if (!ensurePlazaEnabled(res, req)) return;
  try {
    return sendData(res, req, { categories: await plazaPosts.listCategories() });
  } catch (error) {
    return plazaRouteError(res, req, error);
  }
});

api.get('/plaza/v1/seo/sitemap', async (req, res) => {
  if (!ensurePlazaEnabled(res, req)) return;
  if (!plazaSeo) return sendError(res, req, 503, 'plaza_unavailable', 'Plaza SEO 未启用');
  try {
    const data = await plazaSeo.listSitemapData({
      postLimit: req.query.post_limit,
      userLimit: req.query.user_limit,
    });
    return sendData(res, req, data);
  } catch (error) {
    return plazaRouteError(res, req, error);
  }
});

api.post('/plaza/v1/attribution/events', async (req, res) => {
  if (!plazaSeo) return sendError(res, req, 503, 'plaza_unavailable', 'Plaza 未启用');
  try {
    const result = await plazaSeo.recordAttribution(req.body ?? {}, plazaClientIp(req));
    return sendData(res, req, result, 201);
  } catch (error) {
    return plazaRouteError(res, req, error);
  }
});

api.post('/plaza/v1/posts/:id/reports', async (req, res) => {
  if (!plazaOps) return sendError(res, req, 503, 'plaza_unavailable', 'Plaza 未启用');
  if (!req.currentUser) return sendError(res, req, 401, 'unauthorized', '未授权，请重新登录');
  try {
    const report = await plazaOps.createReport(req.currentUser.id, {
      target_type: 'post',
      target_id: req.params.id,
      reason: req.body?.reason,
      detail: req.body?.detail,
    });
    return sendData(res, req, { report }, 201);
  } catch (error) {
    return plazaRouteError(res, req, error);
  }
});

api.post('/plaza/v1/comments/:id/reports', async (req, res) => {
  if (!plazaOps) return sendError(res, req, 503, 'plaza_unavailable', 'Plaza 未启用');
  if (!req.currentUser) return sendError(res, req, 401, 'unauthorized', '未授权，请重新登录');
  try {
    const report = await plazaOps.createReport(req.currentUser.id, {
      target_type: 'comment',
      target_id: req.params.id,
      reason: req.body?.reason,
      detail: req.body?.detail,
    });
    return sendData(res, req, { report }, 201);
  } catch (error) {
    return plazaRouteError(res, req, error);
  }
});

api.get('/plaza/v1/feed', async (req, res) => {
  if (!ensurePlazaEnabled(res, req)) return;
  try {
    const feed = await plazaPosts.listFeed({
      sort: req.query.sort,
      categorySlug: req.query.category ?? null,
      cursor: req.query.cursor ?? null,
      limit: req.query.limit,
      viewerId: req.currentUser?.id ?? null,
    });
    return sendData(res, req, feed);
  } catch (error) {
    return plazaRouteError(res, req, error);
  }
});

api.post('/plaza/v1/posts/:id/reactions', async (req, res) => {
  if (!ensurePlazaInteractions(res, req)) return;
  if (!req.currentUser) return sendError(res, req, 401, 'unauthorized', '未授权，请重新登录');
  try {
    const result = await plazaInteractions.addReaction(
      req.currentUser.id,
      req.params.id,
      req.body?.type,
    );
    return sendData(res, req, result);
  } catch (error) {
    return plazaRouteError(res, req, error);
  }
});

api.delete('/plaza/v1/posts/:id/reactions/:type', async (req, res) => {
  if (!ensurePlazaInteractions(res, req)) return;
  if (!req.currentUser) return sendError(res, req, 401, 'unauthorized', '未授权，请重新登录');
  try {
    const result = await plazaInteractions.removeReaction(
      req.currentUser.id,
      req.params.id,
      req.params.type,
    );
    return sendData(res, req, result);
  } catch (error) {
    return plazaRouteError(res, req, error);
  }
});

api.get('/plaza/v1/posts/:id/comments', async (req, res) => {
  if (!ensurePlazaInteractions(res, req)) return;
  try {
    const comments = await plazaInteractions.listComments(req.params.id, {
      cursor: req.query.cursor ?? null,
      limit: req.query.limit,
      parentId: req.query.parent_id ?? null,
      viewerId: req.currentUser?.id ?? null,
    });
    return sendData(res, req, comments);
  } catch (error) {
    return plazaRouteError(res, req, error);
  }
});

api.post('/plaza/v1/posts/:id/comments', async (req, res) => {
  if (!ensurePlazaInteractions(res, req)) return;
  if (!req.currentUser) return sendError(res, req, 401, 'unauthorized', '未授权，请重新登录');
  try {
    const comment = await plazaInteractions.createComment(req.currentUser.id, req.params.id, req.body ?? {});
    return sendData(res, req, { comment }, 201);
  } catch (error) {
    return plazaRouteError(res, req, error);
  }
});

api.delete('/plaza/v1/comments/:id', async (req, res) => {
  if (!ensurePlazaInteractions(res, req)) return;
  if (!req.currentUser) return sendError(res, req, 401, 'unauthorized', '未授权，请重新登录');
  try {
    const comment = await plazaInteractions.deleteComment(req.currentUser.id, req.params.id);
    return sendData(res, req, { comment });
  } catch (error) {
    return plazaRouteError(res, req, error);
  }
});

api.post('/plaza/v1/comments/:id/reactions', async (req, res) => {
  if (!ensurePlazaInteractions(res, req)) return;
  if (!req.currentUser) return sendError(res, req, 401, 'unauthorized', '未授权，请重新登录');
  try {
    const liked = req.body?.liked !== false;
    const result = await plazaInteractions.toggleCommentLike(req.currentUser.id, req.params.id, liked);
    return sendData(res, req, result);
  } catch (error) {
    return plazaRouteError(res, req, error);
  }
});

api.get('/plaza/v1/users/:slug', async (req, res) => {
  if (!ensurePlazaInteractions(res, req)) return;
  try {
    const profile = await plazaInteractions.getUserProfile(
      req.params.slug,
      req.currentUser?.id ?? null,
    );
    return sendData(res, req, profile);
  } catch (error) {
    return plazaRouteError(res, req, error);
  }
});

api.get('/plaza/v1/users/:slug/posts', async (req, res) => {
  if (!ensurePlazaInteractions(res, req)) return;
  try {
    const feed = await plazaInteractions.listUserPosts(req.params.slug, {
      cursor: req.query.cursor ?? null,
      limit: req.query.limit,
      viewerId: req.currentUser?.id ?? null,
    });
    return sendData(res, req, feed);
  } catch (error) {
    return plazaRouteError(res, req, error);
  }
});

api.post('/plaza/v1/users/:slug/follow', async (req, res) => {
  if (!ensurePlazaInteractions(res, req)) return;
  if (!req.currentUser) return sendError(res, req, 401, 'unauthorized', '未授权，请重新登录');
  try {
    const result = await plazaInteractions.followUser(req.currentUser.id, req.params.slug);
    return sendData(res, req, result);
  } catch (error) {
    return plazaRouteError(res, req, error);
  }
});

api.delete('/plaza/v1/users/:slug/follow', async (req, res) => {
  if (!ensurePlazaInteractions(res, req)) return;
  if (!req.currentUser) return sendError(res, req, 401, 'unauthorized', '未授权，请重新登录');
  try {
    const result = await plazaInteractions.unfollowUser(req.currentUser.id, req.params.slug);
    return sendData(res, req, result);
  } catch (error) {
    return plazaRouteError(res, req, error);
  }
});

api.get('/plaza/v1/posts/:id', async (req, res) => {
  if (!ensurePlazaEnabled(res, req)) return;
  try {
    const post = await plazaPosts.getPostById(req.params.id, {
      viewerId: req.currentUser?.id ?? null,
    });
    void plazaRedis.recordView(req.params.id, plazaClientIp(req)).catch(() => {});
    return sendData(res, req, { post });
  } catch (error) {
    return plazaRouteError(res, req, error);
  }
});

api.post('/plaza/v1/posts', async (req, res) => {
  if (!ensurePlazaEnabled(res, req)) return;
  if (!req.currentUser) {
    return sendError(res, req, 401, 'unauthorized', '未授权，请重新登录');
  }
  try {
    const post = await plazaPosts.createPost(req.currentUser.id, req.body ?? {});
    return sendData(res, req, { post }, 201);
  } catch (error) {
    return plazaRouteError(res, req, error);
  }
});

api.patch('/plaza/v1/posts/:id', async (req, res) => {
  if (!ensurePlazaEnabled(res, req)) return;
  if (!req.currentUser) {
    return sendError(res, req, 401, 'unauthorized', '未授权，请重新登录');
  }
  try {
    const post = await plazaPosts.updatePost(req.currentUser.id, req.params.id, req.body ?? {});
    return sendData(res, req, { post });
  } catch (error) {
    return plazaRouteError(res, req, error);
  }
});

api.delete('/plaza/v1/posts/:id', async (req, res) => {
  if (!ensurePlazaEnabled(res, req)) return;
  if (!req.currentUser) {
    return sendError(res, req, 401, 'unauthorized', '未授权，请重新登录');
  }
  try {
    const post = await plazaPosts.hidePost(req.currentUser.id, req.params.id);
    return sendData(res, req, { post });
  } catch (error) {
    return plazaRouteError(res, req, error);
  }
});

function runHandlerChain(chain, req, res, next) {
  let index = 0;
  const run = (err) => {
    if (err) return next(err);
    const layer = chain[index++];
    if (!layer) return;
    layer(req, res, (error) => run(error));
  };
  run();
}

api.post('/agent/start', async (req, res, next) => {
  await userAuthReady;
  if (!userAuth || !tkmindProxy) return next();
  return runHandlerChain(tkmindProxy.handlers['POST /agent/start'], req, res, next);
});

api.post('/agent/resume', async (req, res, next) => {
  await userAuthReady;
  if (!userAuth || !tkmindProxy) return next();
  return runHandlerChain(tkmindProxy.handlers['POST /agent/resume'], req, res, next);
});

api.get('/sessions', async (req, res, next) => {
  await userAuthReady;
  if (!userAuth || !tkmindProxy) return next();
  return runHandlerChain(tkmindProxy.handlers['GET /sessions'], req, res, next);
});

api.get('/sessions/:sessionId/events', async (req, res, next) => {
  await userAuthReady;
  if (!userAuth || !tkmindProxy) return next();
  const sessionId = req.params.sessionId;
  const owns = await userAuth.ownsSession(req.currentUser.id, sessionId);
  if (!owns) {
    return res.status(403).json({ message: '无权访问该会话' });
  }
  return tkmindProxy.proxySessionEvents(req, res, sessionId);
});

api.use(async (req, res, next) => {
  await userAuthReady;
  if (!userAuth || !tkmindProxy) return next();

  const sessionMatch = req.path.match(/^\/sessions\/([^/]+)/);
  if (sessionMatch) {
    const sessionId = sessionMatch[1];
    if (req.path.endsWith('/events') && req.method === 'GET') {
      return next();
    }
    const owns = await userAuth.ownsSession(req.currentUser.id, sessionId);
    if (!owns) {
      return res.status(403).json({ message: '无权访问该会话' });
    }
    if (req.path.endsWith('/reply') && req.method === 'POST') {
      const gate = await userAuth.canUseChat(req.currentUser.id);
      if (!gate.ok) {
        return res.status(402).json({
          message: gate.message,
          code: gate.code,
          balanceCents: gate.balanceCents,
          minRechargeCents: gate.minRechargeCents,
          suggestedTiers: gate.suggestedTiers,
        });
      }
    }
  }

  if (req.method === 'POST' && req.path === '/agent/resume' && req.body?.session_id) {
    const owns = await userAuth.ownsSession(req.currentUser.id, req.body.session_id);
    if (!owns) {
      return res.status(403).json({ message: '无权访问该会话' });
    }
  }

  if (req.body?.working_dir) {
    const allowed = await userAuth.isPathAllowed(req.currentUser.id, req.body.working_dir);
    if (!allowed) {
      return res.status(403).json({ message: '工作目录不在授权范围内' });
    }
  }

  return tkmindProxy.proxyFallback(req, res);
});

api.use('/ops/v1', opsApi);

api.use(
  createProxyMiddleware({
    target: API_TARGET,
    changeOrigin: true,
    secure: false,
    pathRewrite: { '^/api': '' },
    on: {
      proxyReq: (proxyReq) => {
        proxyReq.setHeader('X-Secret-Key', API_SECRET);
      },
    },
  }),
);

app.use('/api', api);

function publishedPageCsp(html) {
  const isFullHtml = /^\s*<!doctype html/i.test(html) || /^\s*<html[\s>]/i.test(html);
  if (isFullHtml) {
    return "default-src 'none'; style-src 'unsafe-inline' https:; img-src data: https:; font-src https: data:; base-uri 'none'; form-action 'self'; frame-ancestors 'self'; script-src 'none'";
  }
  return "default-src 'none'; style-src 'unsafe-inline'; img-src data:; font-src 'none'; base-uri 'none'; form-action 'self'; frame-ancestors 'self'";
}

function sendPublishedPage(res, result) {
  res.set('Content-Type', 'text/html; charset=utf-8');
  res.set('Content-Security-Policy', publishedPageCsp(result.html));
  res.set(
    'Cache-Control',
    result.publication.accessMode === 'public' ? 'public, max-age=60' : 'private, no-store',
  );
  return res.send(result.html);
}

function passwordGateHtml(action) {
  return `<!doctype html>
<html lang="zh-CN">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <meta http-equiv="Content-Security-Policy" content="default-src 'none'; style-src 'unsafe-inline'; form-action 'self'; base-uri 'none'">
  <title>受保护页面</title>
  <style>
    * { box-sizing: border-box; }
    body { min-height: 100vh; margin: 0; display: grid; place-items: center; padding: 24px; color: #17221d; background: radial-gradient(circle at top right, #d9e9df, transparent 42rem), #f5f0e5; font-family: ui-sans-serif, sans-serif; }
    form { width: min(420px, 100%); padding: 36px; border: 1px solid #d6d0c3; border-radius: 28px; background: #fffdf7; box-shadow: 0 24px 70px rgba(35, 48, 40, .12); }
    p { color: #68716c; line-height: 1.7; }
    input, button { width: 100%; margin-top: 14px; padding: 14px 16px; border-radius: 12px; font: inherit; }
    input { border: 1px solid #c9c6bc; }
    button { border: 0; color: white; background: #2f6f57; cursor: pointer; font-weight: 800; }
  </style>
</head>
<body>
  <form method="post" action="${action}">
    <h1>此页面受密码保护</h1>
    <p>请输入发布者提供的访问密码。密码不会写入链接或浏览器日志。</p>
    <input type="password" name="password" minlength="8" maxlength="128" required autocomplete="current-password">
    <button type="submit">访问页面</button>
  </form>
</body>
</html>`;
}

function escapePublicHtml(value) {
  return String(value ?? '')
    .replaceAll('&', '&amp;')
    .replaceAll('<', '&lt;')
    .replaceAll('>', '&gt;')
    .replaceAll('"', '&quot;')
    .replaceAll("'", '&#039;');
}

function publicHomepageHtml(data) {
  const cards = data.pages
    .map(
      (page) => `\
<a class="card" href="${escapePublicHtml(page.publicUrl)}">
  <div class="card-top">
    <span>${escapePublicHtml(page.templateId)}</span>
    <strong>${Number(page.viewCount)} 次浏览</strong>
  </div>
  <h2>${escapePublicHtml(page.title)}</h2>
  <p>${escapePublicHtml(page.summary || '暂无摘要')}</p>
  <div class="card-foot">
    <span>${new Date(page.publishedAt).toLocaleDateString('zh-CN')}</span>
    <span>打开页面</span>
  </div>
</a>`,
    )
    .join('');
  return `<!doctype html>
<html lang="zh-CN">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <meta http-equiv="Content-Security-Policy" content="default-src 'none'; style-src 'unsafe-inline'; img-src data:; font-src 'none'; base-uri 'none'; form-action 'none'; frame-ancestors 'self'">
  <title>${escapePublicHtml(data.owner.displayName)} · MindSpace</title>
  <style>
    :root { color: #17221d; background: #f5f0e5; font-family: 'Iowan Old Style', 'Palatino Linotype', serif; }
    * { box-sizing: border-box; }
    body { margin: 0; min-height: 100vh; background:
      radial-gradient(circle at top right, rgba(79, 137, 112, .18), transparent 32rem),
      linear-gradient(180deg, #f9f6ef 0%, #f1eadc 100%);
      color: #17221d;
    }
    main { width: min(1120px, calc(100% - 32px)); margin: 0 auto; padding: 48px 0 72px; }
    .hero { padding: 28px 0 32px; border-bottom: 1px solid rgba(23, 34, 29, .12); }
    .eyebrow { margin: 0 0 12px; color: #8f6b2f; font: 700 12px/1.4 ui-sans-serif, sans-serif; letter-spacing: .18em; text-transform: uppercase; }
    h1 { margin: 0; font-size: clamp(40px, 8vw, 82px); line-height: .96; letter-spacing: -.05em; }
    .lead { max-width: 760px; margin: 18px 0 0; color: #56615b; font: 18px/1.8 ui-sans-serif, sans-serif; }
    .stats { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 22px; }
    .stats span { border: 1px solid rgba(23, 34, 29, .12); border-radius: 999px; padding: 10px 14px; background: rgba(255,255,255,.6); font: 600 13px/1 ui-sans-serif, sans-serif; color: #405048; }
    .grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 18px; margin-top: 34px; }
    .card { display: flex; flex-direction: column; gap: 16px; min-height: 230px; padding: 22px; border-radius: 24px; text-decoration: none; color: inherit; background: rgba(255,253,247,.92); border: 1px solid rgba(23, 34, 29, .08); box-shadow: 0 20px 60px rgba(45, 53, 47, .08); transition: transform .18s ease, box-shadow .18s ease; }
    .card:hover { transform: translateY(-2px); box-shadow: 0 24px 70px rgba(45, 53, 47, .12); }
    .card-top, .card-foot { display: flex; align-items: center; justify-content: space-between; gap: 12px; font: 600 12px/1.4 ui-sans-serif, sans-serif; color: #6a746f; text-transform: uppercase; letter-spacing: .08em; }
    .card h2 { margin: 0; font-size: 28px; line-height: 1.08; letter-spacing: -.03em; }
    .card p { margin: 0; color: #56615b; font: 15px/1.75 ui-sans-serif, sans-serif; }
    .empty { margin-top: 32px; padding: 28px; border-radius: 24px; background: rgba(255,253,247,.76); border: 1px dashed rgba(23, 34, 29, .18); color: #56615b; font: 16px/1.7 ui-sans-serif, sans-serif; }
    @media (max-width: 640px) {
      main { width: min(100% - 24px, 1120px); padding: 24px 0 48px; }
      .hero { padding-top: 12px; }
      .grid { gap: 14px; }
      .card { min-height: 0; border-radius: 20px; }
      .card h2 { font-size: 24px; }
    }
  </style>
</head>
<body>
  <main>
    <section class="hero">
      <p class="eyebrow">MindSpace Public</p>
      <h1>${escapePublicHtml(data.owner.displayName)}</h1>
      <p class="lead">这里展示 ${escapePublicHtml(data.owner.displayName)} 当前公开发布且在线的 MindSpace 页面。</p>
      <div class="stats">
        <span>${Number(data.pageCount)} 个公开页面</span>
        <span>${Number(data.totalViews)} 次累计浏览</span>
        <span>/u/${escapePublicHtml(data.owner.slug)}</span>
      </div>
    </section>
    ${
      data.pages.length
        ? `<section class="grid">${cards}</section>`
        : '<section class="empty">这个主页还没有公开页面。稍后再来看看，或者直接访问作者分享给你的专属链接。</section>'
    }
  </main>
</body>
</html>`;
}

async function resolvePublishedRoute(req, res, password = null) {
  await userAuthReady;
  if (!mindSpacePublications) return res.status(503).send('MindSpace 未启用');
  try {
    const viewer = req.userSession && userAuth ? await userAuth.getMe(req.userToken) : null;
    const result = await mindSpacePublications.resolvePublic(
      req.params.ownerSlug,
      req.params.urlSlug,
      viewer?.id,
      password,
      {
        userAgent: req.get('user-agent'),
        referrer: req.get('referer'),
      },
    );
    return sendPublishedPage(res, result);
  } catch (error) {
    if (error?.code === 'publication_password_required') {
      return res.status(password ? 403 : 200).send(passwordGateHtml(req.originalUrl));
    }
    if (error?.code === 'publication_login_required') {
      return res.status(401).send('请先登录 TKMind 后再访问此页面');
    }
    if (error?.code === 'publication_not_found') return res.status(404).send('页面不存在或已下线');
    return res.status(500).send('页面加载失败');
  }
}

app.get('/u/:ownerSlug/pages/:urlSlug', async (req, res) => {
  return resolvePublishedRoute(req, res);
});

app.get('/u/:ownerSlug', async (req, res) => {
  await userAuthReady;
  if (!mindSpacePublications) return res.status(503).send('MindSpace 未启用');
  try {
    const data = await mindSpacePublications.getPublicHomepage(req.params.ownerSlug);
    res.set('Content-Type', 'text/html; charset=utf-8');
    res.set(
      'Content-Security-Policy',
      "default-src 'none'; style-src 'unsafe-inline'; img-src data:; font-src 'none'; base-uri 'none'; form-action 'none'; frame-ancestors 'self'",
    );
    res.set('Cache-Control', 'public, max-age=60');
    return res.send(publicHomepageHtml(data));
  } catch (error) {
    if (error?.code === 'publication_not_found') return res.status(404).send('主页不存在');
    return res.status(500).send('主页加载失败');
  }
});

app.post(
  '/u/:ownerSlug/pages/:urlSlug',
  express.urlencoded({ extended: false, limit: '2kb' }),
  async (req, res) => resolvePublishedRoute(req, res, req.body?.password),
);

app.get('/s/:token', async (req, res) => {
  await userAuthReady;
  if (!mindSpacePublications) return res.status(503).send('MindSpace 未启用');
  try {
    const viewer = req.userSession && userAuth ? await userAuth.getMe(req.userToken) : null;
    return sendPublishedPage(
      res,
      await mindSpacePublications.resolvePrivateLink(req.params.token, viewer?.id, {
        userAgent: req.get('user-agent'),
        referrer: req.get('referer'),
      }),
    );
  } catch (error) {
    if (error?.code === 'publication_not_found') return res.status(404).send('页面不存在或已下线');
    return res.status(500).send('页面加载失败');
  }
});

const USERNAME_SLUG = /^[a-z0-9_]{2,32}$/;

function serveUserPublishFile(req, res, next) {
  const parts = req.path.split('/').filter(Boolean);
  if (parts.length < 1) {
    res.status(404).json({ message: '未找到页面' });
    return;
  }

  const [username, ...rest] = parts;
  if (!USERNAME_SLUG.test(username)) {
    res.status(404).json({ message: '未找到页面' });
    return;
  }

  const targetDir = path.join(__dirname, PUBLISH_ROOT_DIR, username);
  const resolvedRoot = path.resolve(targetDir);
  const filePath = path.join(targetDir, ...rest);
  const resolvedPath = path.resolve(filePath);

  if (!resolvedPath.startsWith(`${resolvedRoot}${path.sep}`) && resolvedPath !== resolvedRoot) {
    res.status(403).json({ message: '禁止访问' });
    return;
  }

  if (!fs.existsSync(targetDir)) {
    res.status(404).json({ message: '用户不存在' });
    return;
  }

  if (!fs.existsSync(resolvedPath)) {
    res.status(404).json({ message: '文件不存在' });
    return;
  }

  if (fs.statSync(resolvedPath).isDirectory()) {
    const indexPath = path.join(resolvedPath, 'index.html');
    if (fs.existsSync(indexPath)) {
      res.sendFile(indexPath);
      return;
    }
    res.status(404).json({ message: '目录中没有 index.html' });
    return;
  }

  res.sendFile(resolvedPath, (err) => {
    if (err) res.status(404).json({ message: '文件不存在' });
  });
}

app.use(`/${PUBLISH_ROOT_DIR}`, serveUserPublishFile);

app.use('/temp', (req, res) => {
  res.redirect(301, `/${PUBLISH_ROOT_DIR}${req.url}`);
});

// Serve user public pages: /user/<username>/path/to/file
// These are public-facing pages (like travel guides) stored in user directories
// Accessed via URL like https://goo.tkmind.cn/user/john/vietnam-guide/
app.use('/user', async (req, res, next) => {
  await userAuthReady;
  // Path format: /user/<username>/<rest...>
  const parts = req.path.split('/').filter(Boolean);
  if (parts.length < 1) return next();

  const [username, ...rest] = parts;
  const targetDir = path.join(USERS_ROOT, username);

  // Security: ensure resolved path is within the user's directory
  const filePath = path.join(targetDir, ...rest);
  const resolvedRoot = path.resolve(targetDir);
  const resolvedPath = path.resolve(filePath);

  if (!resolvedPath.startsWith(resolvedRoot + path.sep) && resolvedPath !== resolvedRoot) {
    return res.status(403).json({ message: '禁止访问' });
  }

  // Check if the user directory exists
  if (!fs.existsSync(targetDir)) {
    return res.status(404).json({ message: '用户不存在' });
  }

  if (!fs.existsSync(resolvedPath)) {
    return res.status(404).json({ message: '文件不存在' });
  }

  // If it's a directory, serve index.html
  if (fs.statSync(resolvedPath).isDirectory()) {
    const indexPath = path.join(resolvedPath, 'index.html');
    if (fs.existsSync(indexPath)) {
      return res.sendFile(indexPath);
    }
    return res.status(404).json({ message: '目录中没有 index.html' });
  }

  res.sendFile(resolvedPath, (err) => {
    if (err) res.status(404).json({ message: '文件不存在' });
  });
});

app.get(`/${PUBLISH_ROOT_DIR}/wiki/{*splat}`, (_req, res) => {
  res.sendFile(path.join(__dirname, PUBLISH_ROOT_DIR, 'wiki', 'index.html'));
});

app.get('/temp/wiki/{*splat}', (req, res) => {
  res.redirect(301, `/${PUBLISH_ROOT_DIR}/wiki${req.url.slice('/temp/wiki'.length)}`);
});

app.use(express.static(path.join(__dirname, 'dist'), { index: 'index.html' }));
app.get('/{*splat}', (_req, res) => {
  res.sendFile(path.join(__dirname, 'dist', 'index.html'));
});

userAuthReady.then((enabled) => {
  app.listen(PORT, '127.0.0.1', () => {
    console.log(`TKMind H5 @ http://127.0.0.1:${PORT}`);
    console.log(`Proxy -> ${API_TARGET}`);
    console.log(`Auth  -> ${enabled ? 'multi-user (MySQL)' : legacyAuth ? 'legacy password' : 'disabled'}`);
    console.log(`Wiki  @ http://127.0.0.1:${PORT}/${PUBLISH_ROOT_DIR}/wiki`);
  });
});