'use strict'

const fs = require('fs')
const path = require('path')
const {
  app,
  BrowserWindow,
  Menu,
  Tray,
  ipcMain,
  powerSaveBlocker,
  screen
} = require('electron')

const { loadConfig, updateConfig, resolveExecutable } = require('./config')
const { resolveDataDir, migrateLegacyData, isInside } = require('./datadir')
const { resolveUserRoot, planUserPaths, prepareUserPaths } = require('./userpaths')
const { LogBus } = require('./log-bus')
const { ServiceSupervisor, healthHost } = require('./service')
const { DisplayManager } = require('./displays')
const { fetchDisplayInstances } = require('./instances')
const { createTrayIcon } = require('./tray-icon')
const { validateAccountField, buildPasswdArgs, runPasswd } = require('./account')

// 现场只允许一个实例：两个 Console 会互相抢同一个服务端端口和同一块大屏
if (!app.requestSingleInstanceLock()) {
  app.quit()
} else {
  main()
}

function main() {
  let cfg = null
  let log = null
  let service = null
  let displays = null
  let adminWindow = null
  let serverAdminWindow = null
  let tray = null
  let powerBlockerId = null
  let displayFallbackTimer = null
  let quitting = false
  let shutdownDone = false
  let exePath = null
  // 解析后的数据目录信息（见 datadir.js），拉起服务端和 passwd 都用它
  let dataDirInfo = null
  // 解析后的用户配置/规则路径（见 userpaths.js）：console\config.json、config.yaml、rules\
  let userPaths = null
  // 大屏实例看板只在管理窗口可见时轮询，窗口隐藏即停表
  let instancesTimer = null
  let instancesLastReason = null
  // passwd 子进程同一时刻只允许一个：并发写同一个 sqlite 库没有意义，也会让输出互相串
  let accountBusy = false

  // 部署包根目录：打包后 = exe 所在目录（安装目录），开发态 = 仓库的 console\。
  // 注意别和下面数据目录用的 installDir 混用：那个取的是**服务端 exe** 所在目录，
  // 开发态两者可能不是同一个地方。
  function appDir() {
    return app.isPackaged ? path.dirname(app.getPath('exe')) : path.join(__dirname, '..')
  }

  // Console 自己的 config.json：打包后在 <用户根>\console\config.json（配置/规则已经搬出安装
  // 目录，覆盖安装不会丢），开发态仍是仓库里的 console\config.json。
  // SCOREBOARD_CONSOLE_CONFIG 优先级最高，方便本机临时换一份配置跑。
  function resolveConfigPath() {
    if (process.env.SCOREBOARD_CONSOLE_CONFIG) {
      return path.resolve(process.env.SCOREBOARD_CONSOLE_CONFIG)
    }
    return userPaths ? userPaths.consoleConfig : path.join(__dirname, '..', 'config.json')
  }

  // 开关显示以系统实际状态为准：打包后的 Windows 读登录项 enabled，其余回落配置值。
  function openAtLoginEffective() {
    const configured = cfg ? cfg.values.startup.openAtLogin === true : false
    if (!app.isPackaged || process.platform !== 'win32') return configured
    try {
      return app.getLoginItemSettings().executableWillLaunchAtLogin === true
    } catch {
      return configured
    }
  }

  function statusSnapshot() {
    const status = service ? service.status : { state: 'stopped', stateLabel: '已停止' }
    return {
      ...status,
      configPath: cfg ? cfg.path : null,
      configWarning: cfg ? cfg.warning : null,
      displays: displays ? displays.getInfo() : [],
      powerSaveBlocked: powerBlockerId !== null ? powerSaveBlocker.isStarted(powerBlockerId) : false,
      openAtLogin: openAtLoginEffective(),
      openAtLoginSupported: app.isPackaged && (process.platform === 'win32' || process.platform === 'darwin'),
      appVersion: app.getVersion()
    }
  }

  function sendToAdmin(channel, payload) {
    if (adminWindow && !adminWindow.isDestroyed()) {
      adminWindow.webContents.send(channel, payload)
    }
  }

  function broadcastStatus() {
    sendToAdmin('service:status', statusSnapshot())
  }

  function showAdmin() {
    if (!adminWindow || adminWindow.isDestroyed()) {
      createAdminWindow()
      return
    }
    if (adminWindow.isMinimized()) adminWindow.restore()
    adminWindow.show()
    adminWindow.focus()
  }

  function createAdminWindow() {
    const { width, height } = cfg.values.admin
    adminWindow = new BrowserWindow({
      width,
      height,
      minWidth: 860,
      minHeight: 600,
      title: '赛事积分榜 · 服务管理',
      backgroundColor: '#0f1420',
      show: false,
      // 标题栏由页面自绘；titleBarStyle 只是兜底，防止某些平台忽略 frame:false
      frame: false,
      titleBarStyle: 'hidden',
      webPreferences: {
        preload: path.join(__dirname, '..', 'renderer', 'preload.js'),
        contextIsolation: true,
        nodeIntegration: false,
        sandbox: true
      }
    })

    bindWindowStateEvents(adminWindow)
    adminWindow.loadFile(path.join(__dirname, '..', 'renderer', 'index.html'))
    adminWindow.once('ready-to-show', () => adminWindow.show())

    // 关窗只隐藏，服务端和守护逻辑要继续在托盘里跑
    adminWindow.on('close', (event) => {
      if (quitting) return
      event.preventDefault()
      adminWindow.hide()
      log.push('console', '管理窗口已最小化到托盘（服务端继续运行）')
    })

    // 实例看板只在窗口可见时轮询，隐藏/关闭即停表
    adminWindow.on('show', startInstancesPolling)
    adminWindow.on('hide', stopInstancesPolling)

    adminWindow.on('closed', () => {
      stopInstancesPolling()
      adminWindow = null
    })
  }

  function adminPanelUrl() {
    // 复用服务端的地址推导：host 配成 0.0.0.0/:: 时本机也要走回环
    if (service) return service.status.adminUrl
    return `http://${healthHost(cfg.values.server)}:${cfg.values.server.port}/admin`
  }

  function serverHost() {
    if (service) return service.healthHost()
    return healthHost(cfg.values.server)
  }

  // 大屏实例看板：读服务端 GET /api/display/instances 并推给管理窗口。
  // 失败只按状态变化记一次日志，避免未登录/服务未启动时刷屏。
  async function pollDisplayInstances() {
    let result
    try {
      result = await fetchDisplayInstances({ host: serverHost(), port: cfg.values.server.port })
    } catch (err) {
      result = { ok: false, reason: 'error', message: `读取大屏实例失败：${err.message}` }
    }

    if (result.ok) {
      if (instancesLastReason) {
        instancesLastReason = null
        log.push('console', `大屏实例列表恢复读取（${result.instances.length} 个实例）`)
      }
    } else if (result.reason !== instancesLastReason) {
      instancesLastReason = result.reason
      log.push('console', `读取大屏实例失败：${result.message}`)
    }

    sendToAdmin('display:instances', result)
    return result
  }

  function startInstancesPolling() {
    if (instancesTimer) return
    pollDisplayInstances()
    instancesTimer = setInterval(pollDisplayInstances, 5000)
  }

  function stopInstancesPolling() {
    if (!instancesTimer) return
    clearInterval(instancesTimer)
    instancesTimer = null
  }

  function showServerAdmin() {
    if (!serverAdminWindow || serverAdminWindow.isDestroyed()) {
      createServerAdminWindow()
      return
    }
    if (serverAdminWindow.isMinimized()) serverAdminWindow.restore()
    serverAdminWindow.show()
    serverAdminWindow.focus()
  }

  // 服务端管理面板是 Web 页面，用无边框 Electron 窗口承载，省得现场再开浏览器
  function createServerAdminWindow() {
    const { width, height } = cfg.values.admin
    serverAdminWindow = new BrowserWindow({
      width: Math.max(width, 1100),
      height,
      minWidth: 900,
      minHeight: 620,
      title: '赛事积分榜 · 服务端管理面板',
      backgroundColor: '#161616',
      show: false,
      frame: false,
      titleBarStyle: 'hidden',
      webPreferences: {
        preload: path.join(__dirname, '..', 'renderer', 'shell-preload.js'),
        contextIsolation: true,
        nodeIntegration: false,
        sandbox: true
      }
    })

    bindWindowStateEvents(serverAdminWindow)

    const url = adminPanelUrl()
    log.push('console', `打开服务端管理面板：${url}`)
    serverAdminWindow.loadURL(url).catch((err) => {
      log.push('console', `服务端管理面板加载失败：${err.message}`)
    })

    // 加载失败时 ready-to-show 不会触发，兜底把窗口显示出来，否则用户看不到任何反馈
    const reveal = () => {
      if (serverAdminWindow && !serverAdminWindow.isDestroyed()) {
        serverAdminWindow.show()
        serverAdminWindow.focus()
      }
    }
    serverAdminWindow.once('ready-to-show', reveal)
    serverAdminWindow.webContents.on('did-fail-load', (_event, _code, _desc, _url, isMainFrame) => {
      if (isMainFrame) reveal()
    })

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

  // 服务端管理面板是大屏窗口的第二个入口：页名只收 ASCII slug，
  // 其余（含空值）交给 DisplayManager 回落配置里的默认页
  function safeDisplayPage(value) {
    return typeof value === 'string' && /^[a-z0-9-]{1,32}$/.test(value) ? value : null
  }

  function findDisplay(displayId) {
    return screen.getAllDisplays().find((item) => String(item.id) === String(displayId)) || null
  }

  // 全屏窗口只允许出现在「多屏 + 非主屏」上：单屏或主屏开全屏会把用户桌面整个盖住，
  // 现场又没有键盘能退出来。所以放不放行由主进程判定，页面传什么都不作数。
  function openDisplayWindow(displayId, options) {
    if (!displays) return { ok: false, created: false, mode: null, message: '显示器管理尚未就绪' }
    // IPC 入参一律当不可信处理
    const payload = options && typeof options === 'object' ? options : {}
    const target = findDisplay(displayId)
    if (!target) return { ok: false, created: false, mode: null, message: '未找到该显示器，可能已被拔出' }

    const all = screen.getAllDisplays()
    const singleMachine = all.length <= 1
    const allowFullscreen = !singleMachine && target.id !== screen.getPrimaryDisplay().id
    const wantedFullscreen = payload.fullscreen === true
    const downgraded = wantedFullscreen && !allowFullscreen

    const result = displays.openOn(target, {
      page: safeDisplayPage(payload.page),
      single: !(wantedFullscreen && allowFullscreen)
    })
    log.push('console', `管理面板${result.created ? '创建' : '聚焦'}大屏窗口 display=${target.id}（${result.mode === 'kiosk' ? '全屏 kiosk' : '窗口化'}）`)
    if (downgraded) {
      const reason = singleMachine ? '当前只有一个显示器' : '主显示器'
      log.push('console', `管理面板请求在 display=${target.id} 上开全屏：${reason}只能窗口化，已降级`)
    }

    return {
      ok: true,
      created: result.created,
      mode: result.mode,
      message: downgraded ? `${singleMachine ? '当前只有一个显示器' : '主显示器'}只能窗口化` : undefined
    }
  }

  function closeDisplayWindow(displayId) {
    if (!displays) return { ok: false, closed: false, message: '显示器管理尚未就绪' }
    const target = findDisplay(displayId)
    // 显示器拔了但窗口还在时，也允许按原 id 直接收窗
    const closed = displays.closeDisplay(target ? target.id : Number(displayId))
    return { ok: true, closed }
  }

  // 渲染层要随时知道最大化状态，才能在「最大化/还原」之间换图标
  function bindWindowStateEvents(win) {
    const notify = () => {
      if (win.isDestroyed()) return
      win.webContents.send('window:maximize-changed', win.isMaximized())
    }
    win.on('maximize', notify)
    win.on('unmaximize', notify)
  }

  function ensureDisplays() {
    if (!displays || displays.enabled) return
    if (displayFallbackTimer) {
      clearTimeout(displayFallbackTimer)
      displayFallbackTimer = null
    }
    displays.enable()
  }

  function buildTrayMenu() {
    const status = statusSnapshot()
    const busy = status.state === 'starting' || status.state === 'running' || status.state === 'stopping'
    return Menu.buildFromTemplate([
      {
        label: `服务端：${status.stateLabel}${status.healthy ? ' · 就绪' : ''}`,
        enabled: false
      },
      { type: 'separator' },
      { label: '启动服务', enabled: !busy, click: () => service.start() },
      { label: '停止服务', enabled: busy, click: () => service.stop() },
      { label: '重启服务', enabled: busy, click: () => service.restart() },
      { type: 'separator' },
      { label: '打开管理端', click: () => showAdmin() },
      { label: '打开服务端管理面板', click: () => showServerAdmin() },
      { type: 'separator' },
      {
        label: '退出',
        click: () => {
          quitting = true
          app.quit()
        }
      }
    ])
  }

  function refreshTray() {
    if (!tray || tray.isDestroyed()) return
    const status = statusSnapshot()
    tray.setToolTip(`Scoreboard Console · ${status.stateLabel}${status.healthy ? ' · 就绪' : ''}`)
    tray.setContextMenu(buildTrayMenu())
  }

  function createTray() {
    tray = new Tray(createTrayIcon())
    tray.setToolTip('Scoreboard Console')
    tray.setContextMenu(buildTrayMenu())
    tray.on('double-click', () => showAdmin())
  }

  // 开机自启：只对打包后的程序有意义，开发态注册的是 electron 可执行文件。
  // Windows 上始终注册登录项（任务管理器「启动」里能看到），用 enabled 控制是否真的拉起：
  // 实测 {openAtLogin:true, enabled:false} → openAtLogin=true 且 executableWillLaunchAtLogin=false，
  // 即「已注册但未启用」。macOS 没有 enabled 参数，只能注册/注销。
  function applyOpenAtLogin() {
    if (!app.isPackaged || (process.platform !== 'win32' && process.platform !== 'darwin')) return
    const wanted = cfg.values.startup?.openAtLogin === true
    try {
      app.setLoginItemSettings(loginItemSettings(wanted))
      log.push('console', wanted ? '开机自启已启用' : '开机自启已注册但未启用')
    } catch (err) {
      log.push('console', `设置开机自启失败：${err.message}`)
    }
  }

  // 配置为准：把开关值落到 config.json（只动 startup.openAtLogin）
  function writeOpenAtLogin(value) {
    updateConfig(cfg.path, (raw) => {
      raw.startup = { ...(raw.startup || {}), openAtLogin: value }
    })
  }

  function loginItemSettings(enabled) {
    return process.platform === 'win32'
      ? { openAtLogin: true, enabled }
      : { openAtLogin: enabled }
  }

  // 服务管理窗口的「开机自启」开关：登录项一直保留，只切换是否真正随系统拉起。
  function setOpenAtLogin(enabled) {
    if (!cfg) return { ok: false, message: '配置尚未加载' }
    const wanted = enabled === true
    const previous = cfg.values.startup?.openAtLogin === true

    cfg.values.startup = { ...(cfg.values.startup || {}), openAtLogin: wanted }
    try {
      writeOpenAtLogin(wanted)
    } catch (err) {
      cfg.values.startup.openAtLogin = previous
      log.push('console', `写入开机自启配置失败：${err.message}`)
      return { ok: false, message: `保存配置失败：${err.message}` }
    }

    if (app.isPackaged && (process.platform === 'win32' || process.platform === 'darwin')) {
      try {
        app.setLoginItemSettings(loginItemSettings(wanted))
      } catch (err) {
        // 登录项没写成功，配置也回滚，避免界面与系统状态不一致
        cfg.values.startup.openAtLogin = previous
        try {
          writeOpenAtLogin(previous)
        } catch (rollbackErr) {
          log.push('console', `回滚开机自启配置失败：${rollbackErr.message}`)
        }
        log.push('console', `设置开机自启失败：${err.message}`)
        return { ok: false, message: `写入登录项失败：${err.message}` }
      }
    }

    log.push('console', wanted ? '开机自启已启用' : '开机自启已关闭（登录项保留，任务管理器里可见）')
    return { ok: true, openAtLogin: wanted }
  }

  // 服务端用什么配置文件，passwd 就得用同一份，否则改的是另一个 data/ 下的账号；
  // 打包态这份在用户数据目录里，Console 已经解析好了绝对路径（见 userpaths.js）
  function passwdConfigArg() {
    if (userPaths && userPaths.serverConfig) return userPaths.serverConfig
    const args = Array.isArray(cfg.values.server.args) ? cfg.values.server.args : []
    const index = args.indexOf('-config')
    if (index !== -1 && typeof args[index + 1] === 'string' && args[index + 1]) {
      return args[index + 1]
    }
    return 'config.yaml'
  }

  // 数据目录同理：不带上同一个 -data，passwd 会改到另一个库里的账号上
  function passwdDataArg() {
    return dataDirInfo && dataDirInfo.passToServer ? dataDirInfo.dir : ''
  }

  // 账号重置走同目录的 scoreboard.exe passwd 子命令：本机进程、不经 HTTP，
  // 所以不需要任何登录态，这就是面板能「免验证」的原因。
  async function resetAdminAccount(event, payload) {
    if (accountBusy) return { ok: false, error: '上一次重置还没结束，请稍候再试' }
    // IPC 入参一律当不可信处理
    if (payload === null || typeof payload !== 'object') payload = {}

    const currentUsername = typeof payload.currentUsername === 'string' ? payload.currentUsername.trim() : ''
    const newUsername = typeof payload.newUsername === 'string' ? payload.newUsername.trim() : ''
    const password = typeof payload.password === 'string' ? payload.password : ''

    const invalid =
      validateAccountField(currentUsername, '当前用户名', true) ||
      validateAccountField(newUsername, '新用户名', false) ||
      validateAccountField(password, '新密码', false)
    if (invalid) return { ok: false, error: invalid }

    const exe = exePath || resolveExecutable(cfg.values.server.exe, cfg.path, appDir()).path
    if (!exe || !fs.existsSync(exe)) {
      return { ok: false, error: `未找到服务端程序：${exe || cfg.values.server.exe}` }
    }

    const configArg = passwdConfigArg()
    const dataDirArg = passwdDataArg()
    const args = buildPasswdArgs({ configArg, dataDir: dataDirArg, currentUsername, newUsername, password })
    const sender = event.sender

    accountBusy = true
    // 日志里不能带明文密码
    log.push(
      'console',
      `重置管理员账号：${exe} passwd -config ${configArg}` +
        `${dataDirArg ? ` -data ${dataDirArg}` : ''} -user ${currentUsername}` +
        `${newUsername ? ` -new-username ${newUsername}` : ''}（密码已隐藏）`
    )

    try {
      const result = await runPasswd({
        exePath: exe,
        args,
        onOutput: (text) => {
          if (!sender.isDestroyed()) sender.send('account:output', text)
        }
      })
      const reason = result.error
        ? result.error
        : `退出码 ${result.exitCode}${result.signal ? `，信号 ${result.signal}` : ''}`
      log.push('console', `重置管理员账号${result.ok ? '完成' : '失败'}（${reason}）`)
      return result
    } finally {
      accountBusy = false
    }
  }

  function registerIpc() {
    ipcMain.handle('service:get-status', () => statusSnapshot())
    ipcMain.handle('account:reset', (event, payload) => resetAdminAccount(event, payload))
    ipcMain.handle('service:start', () => {
      service.start()
      return statusSnapshot()
    })
    ipcMain.handle('service:stop', async () => {
      await service.stop()
      return statusSnapshot()
    })
    ipcMain.handle('service:restart', async () => {
      await service.restart()
      return statusSnapshot()
    })
    ipcMain.handle('log:tail', () => (log ? log.tail() : []))
    ipcMain.handle('log:clear', () => {
      if (log) log.clear()
      return true
    })
    ipcMain.handle('display:relayout', () => {
      if (displays && displays.enabled) displays.relayout()
      return statusSnapshot()
    })
    ipcMain.handle('display:list', () => {
      if (!displays) return { single: true, displays: [] }
      return displays.listDisplays()
    })
    ipcMain.handle('display:open', (event, displayId, options) => openDisplayWindow(displayId, options))
    ipcMain.handle('display:close', (event, displayId) => closeDisplayWindow(displayId))
    ipcMain.handle('app:open-admin-window', () => {
      showAdmin()
      return true
    })
    ipcMain.handle('app:open-server-admin', () => {
      showServerAdmin()
      return true
    })
    ipcMain.handle('display:instances-get', () => pollDisplayInstances())
    ipcMain.handle('startup:set-open-at-login', (event, enabled) => setOpenAtLogin(enabled))

    // 窗口控制统一从 event.sender 反查窗口，多个窗口共用同一套通道
    ipcMain.handle('window:minimize', (event) => {
      const win = BrowserWindow.fromWebContents(event.sender)
      if (win && !win.isDestroyed()) win.minimize()
      return true
    })
    ipcMain.handle('window:maximize', (event) => {
      const win = BrowserWindow.fromWebContents(event.sender)
      if (!win || win.isDestroyed()) return false
      // 以「切换」语义实现，避免按钮在已最大化时点了没反应
      const next = !win.isMaximized()
      if (next) win.maximize()
      else win.unmaximize()
      return next
    })
    ipcMain.handle('window:close', (event) => {
      const win = BrowserWindow.fromWebContents(event.sender)
      if (win && !win.isDestroyed()) win.close()
      return true
    })
    ipcMain.handle('window:is-maximized', (event) => {
      const win = BrowserWindow.fromWebContents(event.sender)
      return Boolean(win && !win.isDestroyed() && win.isMaximized())
    })
  }

  app.whenReady().then(() => {
    const bundleDir = appDir()
    // 配置与规则跟数据目录一样搬出安装目录（见 userpaths.js）。这一步在加载配置之前做：
    // Console 自己的 config.json 也要先落到用户目录。失败只记日志，攒着等日志器建好再写。
    const setupNotes = []
    userPaths = prepareUserPaths({
      plan: planUserPaths({
        installDir: bundleDir,
        userRoot: resolveUserRoot(process.env),
        isPackaged: app.isPackaged
      }),
      log: (message) => setupNotes.push(message)
    })

    cfg = loadConfig(resolveConfigPath())
    log = new LogBus({
      maxLines: cfg.values.log.maxLines,
      // 日志固定在部署包根目录的 logs\ 下（log.file 相对它解析）：配置文件搬走了，
      // 但日志是易失的排查材料，位置保持原样，现场习惯和文档都不用改
      file: path.resolve(bundleDir, cfg.values.log.file || 'logs/console.log'),
      maxFileBytes: cfg.values.log.maxFileBytes
    })

    log.push('console', `Scoreboard Console v${app.getVersion()} 启动（配置：${cfg.path}）`)
    for (const note of setupNotes) log.push('console', note)
    if (userPaths.mode === 'user') {
      log.push('console', `用户数据目录：${userPaths.root}（Console 配置、服务端 config.yaml、rules 都在这里，覆盖安装不会丢）`)
    }
    if (cfg.warning) log.push('console', cfg.warning)

    const resolved = resolveExecutable(cfg.values.server.exe, cfg.path, bundleDir)
    exePath = resolved.path
    log.push('console', `服务端程序：${resolved.path}`)

    const installDir = path.dirname(resolved.path)
    dataDirInfo = resolveDataDir({
      values: cfg.values,
      installDir,
      env: process.env,
      isPackaged: app.isPackaged
    })

    // 老版本把数据放在安装目录里，而覆盖安装会先静默跑旧卸载器把安装目录整个删掉，
    // 所以先做一次性迁移。只在打包态做，开发态不动仓库里的 data/。
    if (app.isPackaged && dataDirInfo.passToServer) {
      migrateLegacyData({
        targetDir: dataDirInfo.dir,
        legacyDir: path.join(installDir, 'data'),
        log: (message) => log.push('console', message)
      })
    }
    log.push(
      'console',
      `数据目录：${dataDirInfo.dir}${dataDirInfo.passToServer ? '' : '（沿用服务端默认）'}`
    )
    if (dataDirInfo.passToServer && isInside(installDir, dataDirInfo.dir)) {
      log.push('console', `警告：数据目录仍在安装目录内（${dataDirInfo.dir}），覆盖安装时会被删除`)
    }

    service = new ServiceSupervisor({
      values: cfg.values,
      exePath: resolved.path,
      log,
      dataDir: dataDirInfo.passToServer ? dataDirInfo.dir : null,
      configPath: userPaths.serverConfig
    })

    displays = new DisplayManager({
      values: cfg.values,
      server: cfg.values.server,
      log
    })

    log.onLine((line) => sendToAdmin('log:line', line))

    service.on('status', (status) => {
      broadcastStatus()
      refreshTray()

      // 服务停了，大屏已无数据可显示，同步关掉扩展屏窗口；
      // 放在状态回调里，IPC 按钮和托盘菜单两条停止路径都能覆盖。
      if (status.state === 'stopped') {
        if (displayFallbackTimer) {
          clearTimeout(displayFallbackTimer)
          displayFallbackTimer = null
        }
        if (displays && displays.enabled) {
          displays.closeAll()
          log.push('console', '服务已停止，大屏窗口已关闭')
        }
        return
      }

      if (!status.healthy) return
      // 服务端恢复后必须让大屏重新加载，否则页面还停在断线兜底画面上
      if (displays.enabled) displays.relayout()
      else ensureDisplays()
    })

    createAdminWindow()
    createTray()
    registerIpc()

    // 单实例锁在 whenReady 之前就生效，但回调要用 cfg；注册放在这里，
    // 避免第二个实例在配置加载完成前触发 showAdmin() 读到 null
    app.on('second-instance', () => showAdmin())

    // 开机自启默认关闭，按 config.json 的 startup.openAtLogin 决定是否注册
    applyOpenAtLogin()

    // 防熄屏要在服务端起来之前就生效，否则开机后第一段时间屏幕仍会休眠
    try {
      powerBlockerId = powerSaveBlocker.start('prevent-display-sleep')
      log.push('console', `防熄屏已启用（powerSaveBlocker=${powerBlockerId}，生效=${powerSaveBlocker.isStarted(powerBlockerId)}）`)
    } catch (err) {
      powerBlockerId = null
      log.push('console', `防熄屏启用失败：${err.message}`)
    }

    if (cfg.values.server.autoStart) {
      service.start()
    } else {
      log.push('console', '配置为不自动启动，等待手动启动服务端')
    }

    // 服务端迟迟不健康（例如首次迁移很慢）也要把大屏开出来，别让现场只看到桌面
    const wait = Number(cfg.values.display.waitForServerMs) || 0
    if (wait > 0) {
      displayFallbackTimer = setTimeout(() => {
        displayFallbackTimer = null
        if (displays && !displays.enabled) {
          log.push('console', `等待服务端就绪超过 ${Math.round(wait / 1000)} 秒，先打开大屏窗口`)
          ensureDisplays()
        }
      }, wait)
    }
  })

  // 常驻托盘：窗口全关也不退出，服务端要继续守着
  app.on('window-all-closed', () => {})

  app.on('before-quit', (event) => {
    quitting = true
    if (shutdownDone) return
    event.preventDefault()

    const finish = () => {
      stopInstancesPolling()
      if (displays) displays.closeAll()
      if (powerBlockerId !== null) powerSaveBlocker.stop(powerBlockerId)
      if (log) log.close()
      shutdownDone = true
      app.quit()
    }

    if (service) {
      service.stop().then(finish).catch(finish)
    } else {
      finish()
    }
  })

  app.on('quit', () => {
    stopInstancesPolling()
    if (service) service.dispose()
  })
}