import { readFileSync, writeFileSync } from 'node:fs'
import { join } from 'node:path'

import type {
  DesktopAccountInfo,
  DesktopClientReleaseCheckResponse,
  DesktopClientRotateResponse,
  DesktopRuntimeSessionSyncRequest,
} from '@geo/shared-types'
import { isAIPlatformId } from '@geo/shared-types'
import { shell } from 'electron'
import type {
  BrowserWindow as ElectronBrowserWindow,
  WebContents as ElectronWebContents,
  IpcMainInvokeEvent,
} from 'electron/main'
import { BrowserWindow, Menu, app, ipcMain, nativeTheme } from 'electron/main'

import { bindPublishAccount, openPublishAccountConsole } from './account-binder'
import { initAccountHealth } from './account-health'
import {
  applyDesktopHealthIndicatorFromSnapshot,
  createDesktopHealthIcon,
  startDesktopHealthIndicator,
  syncDesktopHealthIndicator,
} from './app-issue-indicator'
import {
  getDesktopAppSettings,
  hasShownBackgroundBalloon,
  initDesktopAppSettings,
  markBackgroundBalloonShown,
  setDesktopAppSetting,
  type DesktopAppSettingKey,
} from './app-settings'
import { getDesktopAppVersion, getDesktopReleaseChannel } from './app-version'
import {
  initDesktopBugReporter,
  submitManualDesktopBugReport,
  syncDesktopBugReporterSession,
} from './bug-reporter'
import {
  defaultDesktopUpdateChannel,
  startDesktopClientUpdate,
  type DesktopClientUpdateProgressEvent,
} from './client-updater'
import { resolveDesktopClientID, resolveDesktopDeviceInfo } from './device-id'
import {
  clearSavedLoginCredentials,
  getSavedLoginCredentials,
  saveLoginCredentials,
} from './login-credentials'
import {
  installObservedGlobalFetch,
  registerObservedRequestRendererTarget,
} from './network-observer'
import { getPlaywrightCDPPort, preparePlaywrightCDPPort, startHiddenPlaywrightReaper } from './playwright-cdp'
import { initProcessMetricsSampler } from './process-metrics'
import { registerRendererDevtoolsProxyTarget } from './renderer-devtools-proxy'
import {
  getRuntimeControllerSnapshot,
  noteRuntimeAccountBound,
  refreshRuntimeAccounts,
  releaseRuntimeSession,
  requestRuntimeAccountProbe,
  syncRuntimeSession,
  unbindRuntimeAccount,
} from './runtime-controller'
import { onRuntimeInvalidated } from './runtime-events'
import { createRuntimeAccountSnapshot, createRuntimeSnapshot } from './runtime-snapshot'
import { initScheduler } from './scheduler'
import { initSessionRegistry } from './session-registry'
import { initSingleInstance } from './single-instance'
import {
  cleanDesktopStorage,
  getDesktopStorageSnapshot,
  startStorageCleanupScheduler,
} from './storage-cleaner'
import {
  cancelDesktopTask,
  checkDesktopClientRelease,
  initTransport,
  listDesktopPublishTasks,
  resolveDesktopClientReleaseDownloadURL,
  retryDesktopPublishTask,
  rotateDesktopClient,
} from './transport/api-client'
import { initTray, showTrayBalloon } from './tray'
import { STANDARD_USER_AGENT } from './user-agent'
import { startHotViewReaper } from './view-pool'

// In dev (no packaged Info.plist / NSIS metadata) Electron falls back to the
// generic "Electron" name, so the macOS menu bar and Windows task switcher
// show "Electron". Pin the dev-time app name to the product brand. Packaged
// builds ignore this because Info.plist `CFBundleName` (driven by
// electron-builder `productName`) takes precedence.
app.setName('ShengxinPush')

// The macOS "About" panel pulls from a separate options bag — `setName` alone
// leaves it as "Electron 41.x". Set explicit copy here so the dev About dialog
// matches the brand. Packaged macOS again wins via Info.plist.
app.setAboutPanelOptions({
  applicationName: 'ShengxinPush',
  applicationVersion: app.getVersion(),
  version: app.getVersion(),
  copyright: 'Copyright © 2026 shengxintui.com',
  website: 'https://shengxintui.com',
})

app.commandLine.appendSwitch(
  'disable-features',
  'PostQuantumKyber,EncryptedClientHello,UseDnsHttpsSvcb,UseDnsHttpsSvcbAlpn',
)
app.commandLine.appendSwitch('disable-quic')
app.commandLine.appendSwitch('disable-background-networking')
// CDP is required by the hidden Playwright execution pool. Electron only reads
// this switch during early startup, so select the port before app.whenReady().
app.userAgentFallback = STANDARD_USER_AGENT

// Windows 10+ routes tray.displayBalloon through the Toast Notification API,
// which requires a registered AppUserModelID. electron-builder writes this on
// the Start Menu shortcut at install time, but we set it explicitly so dev
// runs and edge-case installs also fire the balloon reliably.
if (process.platform === 'win32') {
  app.setAppUserModelId('com.geo.rankly.desktop')
}

const isDevelopmentRuntime = !app.isPackaged
const desktopDeepLinkScheme = 'shengxintui'

function silencePackagedConsole(): void {
  if (isDevelopmentRuntime) {
    return
  }

  const noop = () => undefined
  console.log = noop
  console.info = noop
  console.warn = noop
  console.error = noop
  console.debug = noop
}

silencePackagedConsole()
initDesktopBugReporter()
if (isDevelopmentRuntime) {
  installObservedGlobalFetch()
}

console.info('[desktop-main] boot', {
  electron: process.versions.electron,
  chrome: process.versions.chrome,
  node: process.versions.node,
  ua: STANDARD_USER_AGENT,
  cdpPort: getPlaywrightCDPPort(),
})

process.on('unhandledRejection', (reason) => {
  console.error('[desktop-main] unhandled rejection', reason)
})

process.on('uncaughtException', (error) => {
  console.error('[desktop-main] uncaught exception', error)
})

let mainWindow: ElectronBrowserWindow | null = null
let loginWindow: ElectronBrowserWindow | null = null
let settingsWindow: ElectronBrowserWindow | null = null
let mainRendererContents: ElectronWebContents | null = null
let quitReleaseInFlight = false
let cdpRecoveryRelaunchInFlight = false
let quitAfterSaasLogoutPromise: Promise<void> | null = null
let mainWindowCreatePromise: Promise<ElectronBrowserWindow> | null = null
let loginWindowCreatePromise: Promise<ElectronBrowserWindow> | null = null
let settingsWindowCreatePromise: Promise<ElectronBrowserWindow> | null = null
let windowModeSwitchQueue: Promise<void> = Promise.resolve()
let clientTokenRotatePromise: Promise<DesktopClientRotateResponse> | null = null
let canHandleDesktopDeepLinks = false
const pendingDesktopDeepLinks: string[] = []
const forceCloseWindows = new WeakSet<ElectronBrowserWindow>()
const appWindowModes = new WeakMap<ElectronBrowserWindow, RendererWindowMode>()
const maxCDPRecoveryRelaunchesPerWindow = 3
const cdpRecoveryRelaunchWindowMs = 10 * 60_000
const cdpRecoveryRelaunchDelayMs = 1_500
const cdpFatalArg = '--geo-cdp-fatal'

type WindowMode = 'login' | 'main'
type RendererWindowMode = WindowMode | 'settings'
type WindowModeSource = 'auth-state' | 'login' | 'logout'

interface WindowSizePreset {
  width: number
  height: number
  minWidth: number
  minHeight: number
  resizable: boolean
}

interface WindowModeRequest {
  source?: WindowModeSource
  animate?: boolean
}

const WINDOW_READY_TIMEOUT_MS = 1200

const WINDOW_SIZES: Record<WindowMode, WindowSizePreset> = {
  login: { width: 340, height: 540, minWidth: 340, minHeight: 540, resizable: false },
  main: { width: 1420, height: 960, minWidth: 900, minHeight: 600, resizable: true },
}

const SETTINGS_WINDOW_SIZE: WindowSizePreset = {
  width: 920,
  height: 640,
  minWidth: 760,
  minHeight: 520,
  resizable: true,
}

const TITLE_BAR_OVERLAY_HEIGHT = 24

function appTitleBarStyle(): 'hidden' | 'hiddenInset' {
  return process.platform === 'darwin' ? 'hiddenInset' : 'hidden'
}

function appTitleBarOverlay(
  color: string,
): { color: string; symbolColor: string; height: number } | undefined {
  if (process.platform === 'darwin') {
    return undefined
  }
  return {
    color,
    symbolColor: nativeTheme.shouldUseDarkColors ? '#f8fafc' : '#111827',
    height: TITLE_BAR_OVERLAY_HEIGHT,
  }
}

function suppressNativeWindowMenu(window?: ElectronBrowserWindow): void {
  if (process.platform === 'darwin') {
    return
  }
  Menu.setApplicationMenu(null)
  window?.setMenu(null)
  window?.setMenuBarVisibility(false)
}

function windowModePath(): string {
  return join(app.getPath('userData'), 'window-mode.json')
}

function readPersistedWindowMode(): WindowMode {
  try {
    const raw = readFileSync(windowModePath(), 'utf8')
    const data = JSON.parse(raw) as { mode?: unknown }
    if (data?.mode === 'main' || data?.mode === 'login') {
      return data.mode
    }
  } catch {
    // First run, missing file, or corrupt — fall through to default.
  }
  return 'login'
}

function persistWindowMode(mode: WindowMode): void {
  try {
    writeFileSync(windowModePath(), JSON.stringify({ mode }), 'utf8')
  } catch (err) {
    console.warn('[desktop-main] persist window mode failed', err)
  }
}

let currentWindowMode: WindowMode = 'login'

function normalizeWindowModeRequest(input: unknown): WindowModeRequest {
  if (!input || typeof input !== 'object') {
    return {}
  }

  const candidate = input as { source?: unknown; animate?: unknown }
  return {
    source:
      candidate.source === 'login' ||
      candidate.source === 'logout' ||
      candidate.source === 'auth-state'
        ? candidate.source
        : undefined,
    animate: candidate.animate === true,
  }
}

function currentMainWindow(): ElectronBrowserWindow | null {
  if (!mainWindow) {
    return null
  }
  if (mainWindow.isDestroyed()) {
    mainWindow = null
    return null
  }
  return mainWindow
}

function currentLoginWindow(): ElectronBrowserWindow | null {
  if (!loginWindow) {
    return null
  }
  if (loginWindow.isDestroyed()) {
    loginWindow = null
    return null
  }
  return loginWindow
}

function currentSettingsWindow(): ElectronBrowserWindow | null {
  if (!settingsWindow) {
    return null
  }
  if (settingsWindow.isDestroyed()) {
    settingsWindow = null
    return null
  }
  return settingsWindow
}

function currentActiveWindow(): ElectronBrowserWindow | null {
  return currentMainWindow() ?? currentLoginWindow()
}

function rendererModeFromWindow(window: ElectronBrowserWindow): RendererWindowMode | null {
  if (window.isDestroyed()) {
    return null
  }

  const knownMode = appWindowModes.get(window)
  if (knownMode) {
    return knownMode
  }

  try {
    const url = new URL(window.webContents.getURL())
    const mode = url.searchParams.get('window')
    return mode === 'login' || mode === 'main' || mode === 'settings' ? mode : null
  } catch {
    return null
  }
}

function retireWindowAfterIpcReturn(window: ElectronBrowserWindow): void {
  if (window.isDestroyed()) {
    return
  }

  forceCloseWindows.add(window)
  if (window.isVisible()) {
    window.hide()
  }
  setTimeout(() => {
    if (!window.isDestroyed()) {
      window.destroy()
    }
  }, 50)
}

function retireInactiveAppWindows(mode: WindowMode, target: ElectronBrowserWindow): void {
  for (const candidate of BrowserWindow.getAllWindows()) {
    if (candidate === target || candidate.isDestroyed()) {
      continue
    }

    const candidateMode = rendererModeFromWindow(candidate)
    if (
      (mode === 'main' && (candidateMode === 'login' || candidateMode === 'main')) ||
      (mode === 'login' &&
        (candidateMode === 'login' || candidateMode === 'main' || candidateMode === 'settings'))
    ) {
      retireWindowAfterIpcReturn(candidate)
    }
  }
}

async function waitForWindowReady(window: ElectronBrowserWindow): Promise<void> {
  if (window.isDestroyed() || !window.webContents.isLoading()) {
    return
  }

  await new Promise<void>((resolve) => {
    let settled = false
    let timeout: ReturnType<typeof setTimeout> | null = null

    const finish = () => {
      if (settled) {
        return
      }
      settled = true
      if (timeout) {
        clearTimeout(timeout)
      }
      window.off('ready-to-show', finish)
      window.webContents.off('did-finish-load', finish)
      window.webContents.off('did-fail-load', finish)
      resolve()
    }

    timeout = setTimeout(finish, WINDOW_READY_TIMEOUT_MS)
    window.once('ready-to-show', finish)
    window.webContents.once('did-finish-load', finish)
    window.webContents.once('did-fail-load', finish)
  })
}

function captureRuntimeSnapshot() {
  const snapshot = createRuntimeSnapshot()
  applyDesktopHealthIndicatorFromSnapshot(snapshot, currentMainWindow())
  return snapshot
}

function captureRuntimeAccountSnapshot(accountId: string) {
  return createRuntimeAccountSnapshot(accountId)
}

async function clearRendererDesktopSession(window: ElectronBrowserWindow | null): Promise<void> {
  if (!window || window.isDestroyed()) {
    return
  }

  await window.webContents
    .executeJavaScript("window.localStorage.removeItem('geo.desktop.session.v1')", true)
    .catch((error) => {
      console.warn('[desktop-main] clear renderer desktop session failed', {
        message: error instanceof Error ? error.message : String(error),
      })
    })
}

async function clearRendererDesktopSessions(): Promise<void> {
  await Promise.all(
    BrowserWindow.getAllWindows().map((window) =>
      clearRendererDesktopSession(window).catch((error) => {
        console.warn('[desktop-main] clear window desktop session failed', {
          message: error instanceof Error ? error.message : String(error),
        })
      }),
    ),
  )
}

async function ensureMainWindow(): Promise<ElectronBrowserWindow> {
  const existing = currentMainWindow()
  if (existing) {
    return existing
  }
  if (!mainWindowCreatePromise) {
    mainWindowCreatePromise = createAppWindow('main')
      .then((window) => {
        mainWindow = window
        return window
      })
      .finally(() => {
        mainWindowCreatePromise = null
      })
  }
  return mainWindowCreatePromise
}

async function ensureLoginWindow(): Promise<ElectronBrowserWindow> {
  const existing = currentLoginWindow()
  if (existing) {
    return existing
  }
  if (!loginWindowCreatePromise) {
    loginWindowCreatePromise = createAppWindow('login')
      .then((window) => {
        loginWindow = window
        return window
      })
      .finally(() => {
        loginWindowCreatePromise = null
      })
  }
  return loginWindowCreatePromise
}

async function ensureSettingsWindow(): Promise<ElectronBrowserWindow> {
  const existing = currentSettingsWindow()
  if (existing) {
    return existing
  }
  if (!settingsWindowCreatePromise) {
    settingsWindowCreatePromise = createSettingsWindow()
      .then((window) => {
        settingsWindow = window
        return window
      })
      .finally(() => {
        settingsWindowCreatePromise = null
      })
  }
  return settingsWindowCreatePromise
}

async function ensureWindow(mode: WindowMode): Promise<ElectronBrowserWindow> {
  return mode === 'main' ? ensureMainWindow() : ensureLoginWindow()
}

async function revealWindow(window: ElectronBrowserWindow): Promise<void> {
  await waitForWindowReady(window)
  if (window.isMinimized()) {
    window.restore()
  }
  if (!window.isVisible()) {
    window.show()
  }
  window.focus()
  app.focus({ steal: true })
}

async function revealActiveWindow(): Promise<void> {
  const window = currentActiveWindow() ?? (await ensureWindow(currentWindowMode))
  await revealWindow(window)
}

function revealActiveWindowSafely(source: string): void {
  void revealActiveWindow().catch((error) => {
    console.error('[desktop-main] reveal active window failed', { source, error })
  })
}

function timeout(ms: number): Promise<void> {
  return new Promise((resolve) => setTimeout(resolve, ms))
}

function quitAfterClearingSaasSession(): void {
  if (quitAfterSaasLogoutPromise) {
    return
  }

  quitAfterSaasLogoutPromise = (async () => {
    currentWindowMode = 'login'
    persistWindowMode('login')

    // Only clear the Shengxintui SaaS session. Bound media/AI account browser
    // partitions are intentionally preserved so the same account can reuse them
    // after signing in again.
    await Promise.race([clearRendererDesktopSessions(), timeout(1000)])
    await Promise.race([releaseRuntimeSession(), timeout(1500)])
  })()
    .catch((error) => {
      console.warn('[desktop-main] quit after clearing saas session failed', {
        message: error instanceof Error ? error.message : String(error),
      })
    })
    .finally(() => {
      quitReleaseInFlight = true
      app.quit()
    })
}

function requestPlaywrightCDPRecoveryRelaunch(message: string): void {
  if (cdpRecoveryRelaunchInFlight) {
    return
  }

  const now = Date.now()
  const recentRelaunches = process.argv
    .filter((arg) => arg.startsWith('--geo-cdp-recovery-at='))
    .map((arg) => Number.parseInt(arg.split('=')[1] ?? '', 10))
    .filter((timestamp) => Number.isFinite(timestamp) && now - timestamp < cdpRecoveryRelaunchWindowMs)

  if (recentRelaunches.length >= maxCDPRecoveryRelaunchesPerWindow) {
    console.error('[desktop-main] playwright cdp recovery relaunch suppressed', {
      message,
      recentRelaunches: recentRelaunches.length,
    })
    showTrayBalloon(
      '浏览器自动化通道异常',
      '客户端已停止采集。请重启客户端或检查安全软件/端口占用。',
    )
    return
  }

  cdpRecoveryRelaunchInFlight = true
  console.warn('[desktop-main] scheduling playwright cdp recovery relaunch', {
    message,
    cdpPort: getPlaywrightCDPPort(),
  })
  showTrayBalloon('正在恢复浏览器自动化通道', '客户端将自动重启后台进程，登录状态会保留。')

  setTimeout(() => {
    quitReleaseInFlight = true
    app.relaunch({
      args: [
        ...process.argv.slice(1).filter((arg) => !arg.startsWith('--geo-cdp-recovery-at=')),
        ...recentRelaunches.map((timestamp) => `--geo-cdp-recovery-at=${timestamp}`),
        `--geo-cdp-recovery-at=${now}`,
        ...(recentRelaunches.length + 1 >= maxCDPRecoveryRelaunchesPerWindow ? [cdpFatalArg] : []),
      ],
    })
    app.exit(0)
  }, cdpRecoveryRelaunchDelayMs)
}

function windowFromIpcEvent(event: IpcMainInvokeEvent): ElectronBrowserWindow | null {
  const window = BrowserWindow.fromWebContents(event.sender)
  if (!window || window.isDestroyed()) {
    return null
  }
  return window
}

async function switchWindowMode(
  mode: WindowMode,
  _request: WindowModeRequest = {},
  sourceWindow: ElectronBrowserWindow | null = null,
): Promise<void> {
  currentWindowMode = mode
  persistWindowMode(mode)

  const target = await ensureWindow(mode)
  const previous =
    sourceWindow && sourceWindow !== target
      ? sourceWindow
      : mode === 'main'
        ? currentLoginWindow()
        : currentMainWindow()

  if (!target.isVisible()) {
    target.center()
  }
  await revealWindow(target)

  if (previous && previous !== target && !previous.isDestroyed()) {
    retireWindowAfterIpcReturn(previous)
  }

  const settings = currentSettingsWindow()
  if (mode === 'login' && settings) {
    retireWindowAfterIpcReturn(settings)
  }
  retireInactiveAppWindows(mode, target)
}

function queueWindowModeSwitch(
  mode: WindowMode,
  request: WindowModeRequest = {},
  sourceWindow: ElectronBrowserWindow | null = null,
): Promise<void> {
  const nextSwitch = windowModeSwitchQueue
    .catch(() => undefined)
    .then(() => switchWindowMode(mode, request, sourceWindow))
  windowModeSwitchQueue = nextSwitch.catch(() => undefined)
  return nextSwitch
}

async function openSettingsWindow(): Promise<void> {
  const window = await ensureSettingsWindow()
  const parent = settingsWindowParent()
  if (parent && window.getParentWindow() !== parent) {
    window.setParentWindow(parent)
  }
  await revealWindow(window)
}

function settingsWindowParent(): ElectronBrowserWindow | undefined {
  if (process.platform !== 'win32') {
    return undefined
  }
  return currentMainWindow() ?? undefined
}

function rendererURL(): string | null {
  return process.env.ELECTRON_RENDERER_URL ?? null
}

function preloadPath(): string {
  return join(__dirname, '../preload/bridge.cjs')
}

async function loadRenderer(
  window: ElectronBrowserWindow,
  mode: RendererWindowMode,
): Promise<void> {
  const devServerURL = rendererURL()
  if (devServerURL) {
    const url = new URL(devServerURL)
    url.searchParams.set('window', mode)
    await window.webContents.loadURL(url.toString())
    if (mode === 'main' && isDevelopmentRuntime) {
      window.webContents.openDevTools({ mode: 'detach' })
    }
    return
  }

  await window.webContents.loadFile(join(__dirname, '../renderer/index.html'), {
    query: { window: mode },
  })
}

async function mountRendererWebContents(
  window: ElectronBrowserWindow,
  mode: RendererWindowMode,
): Promise<void> {
  const contents = window.webContents

  contents.setWindowOpenHandler(() => ({ action: 'deny' }))
  if (mode === 'main') {
    if (isDevelopmentRuntime) {
      registerRendererDevtoolsProxyTarget(contents)
      registerObservedRequestRendererTarget(contents)
    }
    mainRendererContents = contents
    window.on('closed', () => {
      if (mainRendererContents === contents) {
        mainRendererContents = null
      }
    })
  }

  await loadRenderer(window, mode)
}

async function createAppWindow(mode: WindowMode): Promise<ElectronBrowserWindow> {
  const initial = WINDOW_SIZES[mode]
  const backgroundColor =
    mode === 'login' ? '#eaf2ff' : nativeTheme.shouldUseDarkColors ? '#15191a' : '#f0f2f5'
  const window = new BrowserWindow({
    width: initial.width,
    height: initial.height,
    minWidth: initial.minWidth,
    minHeight: initial.minHeight,
    show: false,
    title: '省心推',
    icon: createDesktopHealthIcon('normal'),
    titleBarStyle: appTitleBarStyle(),
    titleBarOverlay: appTitleBarOverlay('#00000000'),
    trafficLightPosition: { x: 12, y: 14 },
    resizable: initial.resizable,
    minimizable: mode !== 'login',
    maximizable: initial.resizable,
    fullscreenable: initial.resizable,
    autoHideMenuBar: true,
    backgroundColor,
    webPreferences: {
      preload: preloadPath(),
      sandbox: true,
      contextIsolation: true,
      nodeIntegration: false,
    },
  })
  appWindowModes.set(window, mode)
  suppressNativeWindowMenu(window)

  if (!initial.resizable) {
    window.setMinimumSize(initial.minWidth, initial.minHeight)
    window.setMaximumSize(initial.width, initial.height)
  }

  window.once('closed', () => {
    if (mode === 'main' && mainWindow === window) {
      mainWindow = null
    }
    if (mode === 'login' && loginWindow === window) {
      loginWindow = null
    }
  })

  window.on('close', (event) => {
    if (
      mode === 'main' &&
      !quitReleaseInFlight &&
      !forceCloseWindows.has(window) &&
      getDesktopAppSettings().keepRunningInBackground
    ) {
      event.preventDefault()
      window.hide()
      // Windows: notify users once that the app is still running in the tray.
      // displayBalloon is a no-op on macOS/Linux so the guard is in tray.ts.
      if (process.platform === 'win32' && !hasShownBackgroundBalloon()) {
        showTrayBalloon('省心推已最小化到托盘', '应用仍在后台运行，右键托盘图标可退出。')
        markBackgroundBalloonShown()
      }
    }
  })

  window.on('minimize', () => {
    console.warn('[desktop-main] main window minimize event', {
      at: new Date().toISOString(),
      stack: new Error('trace').stack,
    })
  })
  window.on('hide', () => {
    console.warn('[desktop-main] main window hide event', {
      at: new Date().toISOString(),
      stack: new Error('trace').stack,
    })
  })
  window.on('blur', () => {
    console.warn('[desktop-main] main window blur event', {
      at: new Date().toISOString(),
      visible: window.isVisible(),
      minimized: window.isMinimized(),
    })
  })

  await mountRendererWebContents(window, mode)
  return window
}

async function createSettingsWindow(): Promise<ElectronBrowserWindow> {
  const initial = SETTINGS_WINDOW_SIZE
  const backgroundColor = nativeTheme.shouldUseDarkColors ? '#15191a' : '#f2f4f7'
  const window = new BrowserWindow({
    parent: settingsWindowParent(),
    width: initial.width,
    height: initial.height,
    minWidth: initial.minWidth,
    minHeight: initial.minHeight,
    show: false,
    title: '省心推设置',
    icon: createDesktopHealthIcon('normal'),
    titleBarStyle: appTitleBarStyle(),
    titleBarOverlay: appTitleBarOverlay(backgroundColor),
    trafficLightPosition: { x: 14, y: 15 },
    resizable: initial.resizable,
    maximizable: initial.resizable,
    fullscreenable: false,
    autoHideMenuBar: true,
    backgroundColor,
    webPreferences: {
      preload: preloadPath(),
      sandbox: true,
      contextIsolation: true,
      nodeIntegration: false,
    },
  })
  appWindowModes.set(window, 'settings')
  suppressNativeWindowMenu(window)

  window.once('closed', () => {
    if (settingsWindow === window) {
      settingsWindow = null
    }
  })

  await mountRendererWebContents(window, 'settings')
  return window
}

function ipcErrorMessage(error: unknown): string {
  if (error instanceof Error) {
    return error.message || 'ipc_handler_failed'
  }
  if (typeof error === 'string') {
    return error || 'ipc_handler_failed'
  }
  if (
    error &&
    typeof error === 'object' &&
    'message' in error &&
    typeof (error as { message?: unknown }).message === 'string'
  ) {
    return (error as { message: string }).message || 'ipc_handler_failed'
  }
  return 'ipc_handler_failed'
}

function flattenError(channel: string, error: unknown): Error {
  const message = ipcErrorMessage(error)
  console.error('[desktop-main] ipc handler failed', {
    channel,
    name: error instanceof Error ? error.name : typeof error,
    message,
    stack: error instanceof Error ? error.stack : undefined,
  })

  if (error instanceof Error) {
    const copy = new Error(message)
    copy.name = error.name
    return copy
  }
  return new Error(message)
}

function safeHandle<Args extends unknown[], Result>(
  channel: string,
  handler: (...args: Args) => Promise<Result> | Result,
): void {
  ipcMain.handle(channel, async (...args) => {
    try {
      return await handler(...(args as unknown as Args))
    } catch (error) {
      throw flattenError(channel, error)
    }
  })
}

function isSafeExternalUrl(url: string): boolean {
  try {
    const parsed = new URL(url)
    return parsed.protocol === 'http:' || parsed.protocol === 'https:'
  } catch {
    return false
  }
}

function desktopReleasePlatform(): string {
  switch (process.platform) {
    case 'darwin':
      return 'darwin'
    case 'win32':
      return 'win32'
    case 'linux':
      return 'linux'
    default:
      return process.platform
  }
}

function desktopReleaseArch(): string {
  switch (process.arch) {
    case 'x64':
    case 'arm64':
    case 'ia32':
      return process.arch
    default:
      return 'universal'
  }
}

async function checkCurrentDesktopClientRelease(): Promise<DesktopClientReleaseCheckResponse> {
  const snapshot = getRuntimeControllerSnapshot()
  if (!snapshot.session?.client_token) {
    throw new Error('desktop_client_not_registered')
  }

  return checkDesktopClientRelease({
    platform: desktopReleasePlatform(),
    arch: desktopReleaseArch(),
    version: getDesktopAppVersion(),
    channel: snapshot.session.desktop_client?.channel || getDesktopReleaseChannel(),
  })
}

async function resolveCurrentDesktopClientReleaseDownloadURL(): Promise<{ download_url: string }> {
  const snapshot = getRuntimeControllerSnapshot()
  if (!snapshot.session?.client_token) {
    throw new Error('desktop_client_not_registered')
  }

  return resolveDesktopClientReleaseDownloadURL({
    platform: desktopReleasePlatform(),
    arch: desktopReleaseArch(),
    version: getDesktopAppVersion(),
    channel: snapshot.session.desktop_client?.channel || getDesktopReleaseChannel(),
  })
}

function emitClientUpdateProgress(event: DesktopClientUpdateProgressEvent): void {
  for (const window of BrowserWindow.getAllWindows()) {
    if (!window.isDestroyed()) {
      window.webContents.send('desktop:client-update-progress', event)
    }
  }
}

function registerDesktopProtocolClient(): void {
  if (app.isDefaultProtocolClient(desktopDeepLinkScheme)) {
    return
  }

  if (process.defaultApp && process.execPath) {
    app.setAsDefaultProtocolClient(desktopDeepLinkScheme, process.execPath, [process.argv[1] ?? ''])
    return
  }

  app.setAsDefaultProtocolClient(desktopDeepLinkScheme)
}

function extractDesktopDeepLink(argv: string[]): string | null {
  return argv.find((item) => item.startsWith(`${desktopDeepLinkScheme}://`)) ?? null
}

function queueDesktopDeepLink(rawUrl: string | null | undefined): void {
  if (!rawUrl) {
    return
  }
  if (!canHandleDesktopDeepLinks) {
    pendingDesktopDeepLinks.push(rawUrl)
    return
  }
  handleDesktopDeepLink(rawUrl)
}

function flushPendingDesktopDeepLinks(): void {
  canHandleDesktopDeepLinks = true
  const links = pendingDesktopDeepLinks.splice(0)
  for (const link of links) {
    handleDesktopDeepLink(link)
  }
}

function handleDesktopDeepLink(rawUrl: string): void {
  let parsed: URL
  try {
    parsed = new URL(rawUrl)
  } catch {
    return
  }
  if (parsed.protocol !== `${desktopDeepLinkScheme}:` || parsed.hostname !== 'desktop') {
    return
  }

  if (
    parsed.pathname === '/workbench' ||
    parsed.searchParams.get('action') === 'open-publish-account-console'
  ) {
    const account = {
      id: parsed.searchParams.get('account_id') ?? '',
      platform: parsed.searchParams.get('platform') ?? '',
      platformUid: parsed.searchParams.get('platform_uid') ?? '',
      displayName: parsed.searchParams.get('display_name') ?? '',
    }
    if (!account.id || !account.platform) {
      return
    }

    void openPublishAccountConsole(account).catch((error) => {
      console.warn('[desktop-deeplink] open publish account console failed', {
        accountId: account.id,
        platform: account.platform,
        message: error instanceof Error ? error.message : String(error),
      })
    })
  }
}

function registerBridgeHandlers(): void {
  ipcMain.handle('desktop:ping', () => 'pong')
  ipcMain.handle('desktop:version-info', () => ({
    version: getDesktopAppVersion(),
    channel: getDesktopReleaseChannel(),
  }))
  safeHandle('desktop:check-client-release', () => checkCurrentDesktopClientRelease())
  safeHandle('desktop:client-release-download-url', () =>
    resolveCurrentDesktopClientReleaseDownloadURL(),
  )
  safeHandle('desktop:quit-app', async () => {
    app.quit()
    return null
  })
  safeHandle('desktop:start-client-update', async () => {
    const snapshot = getRuntimeControllerSnapshot()
    if (!snapshot.session?.client_token) {
      throw new Error('desktop_client_not_registered')
    }

    return startDesktopClientUpdate({
      platform: desktopReleasePlatform(),
      arch: desktopReleaseArch(),
      channel: defaultDesktopUpdateChannel(snapshot.session.desktop_client?.channel),
      notify: emitClientUpdateProgress,
      beforeInstall: () => {
        quitReleaseInFlight = true
      },
    })
  })
  ipcMain.handle('desktop:device-info', () => resolveDesktopDeviceInfo())
  safeHandle(
    'desktop:client-id',
    (_event, scope: { tenant_id?: unknown; workspace_id?: unknown; user_id?: unknown }) =>
      resolveDesktopClientID({
        tenant_id: typeof scope?.tenant_id === 'number' ? scope.tenant_id : 0,
        workspace_id: typeof scope?.workspace_id === 'number' ? scope.workspace_id : 0,
        user_id: typeof scope?.user_id === 'number' ? scope.user_id : 0,
      }),
  )
  ipcMain.handle('desktop:runtime-snapshot', () => captureRuntimeSnapshot())
  ipcMain.handle('desktop:runtime-account-snapshot', (_event, accountId: string) =>
    captureRuntimeAccountSnapshot(accountId),
  )
  safeHandle(
    'desktop:submit-bug-report',
    async (
      _event,
      input: {
        title?: string
        description?: string
        severity?: string
      },
    ) => submitManualDesktopBugReport(input ?? {}),
  )
  safeHandle('desktop:bind-publish-account', async (_event, platformId: string) => {
    const account = (await bindPublishAccount(platformId)) as DesktopAccountInfo
    noteRuntimeAccountBound(account)
    void refreshRuntimeAccounts().catch((error) => {
      console.warn('[desktop-bind] background account refresh failed', {
        message: error instanceof Error ? error.message : String(error),
      })
    })
    return account
  })
  safeHandle('desktop:refresh-runtime-accounts', async () => {
    await refreshRuntimeAccounts()
    return null
  })
  safeHandle('desktop:probe-runtime-account', async (_event, accountId: string) => {
    await requestRuntimeAccountProbe(accountId)
    return captureRuntimeAccountSnapshot(accountId)
  })
  safeHandle(
    'desktop:open-publish-account-console',
    async (
      _event,
      account: { id: string; platform: string; platformUid: string; displayName: string },
    ) => {
      await openPublishAccountConsole(account)
      if (isAIPlatformId(account.platform)) {
        return null
      }
      void requestRuntimeAccountProbe(account.id, {
        account,
        force: true,
      }).catch((error) => {
        console.warn('[desktop-console] background account probe failed', {
          accountId: account.id,
          platform: account.platform,
          message: error instanceof Error ? error.message : String(error),
        })
      })
      return null
    },
  )
  safeHandle(
    'desktop:unbind-publish-account',
    async (_event, accountId: string, syncVersion: number) => {
      await unbindRuntimeAccount(accountId, syncVersion)
      return null
    },
  )
  safeHandle(
    'desktop:list-publish-tasks',
    async (_event, params?: { page?: number; page_size?: number; title?: string }) => {
      return listDesktopPublishTasks(params)
    },
  )
  safeHandle('desktop:retry-publish-task', async (_event, taskId: string) => {
    return retryDesktopPublishTask(taskId)
  })
  safeHandle('desktop:cancel-publish-task', async (_event, taskId: string) => {
    return cancelDesktopTask(taskId, { reason: 'user_cancelled_publish' })
  })
  safeHandle('desktop:open-external-url', async (_event, url: string) => {
    if (!isSafeExternalUrl(url)) {
      throw new Error('unsupported_external_url')
    }
    await shell.openExternal(url)
    return null
  })
  safeHandle('desktop:open-settings-window', async () => {
    await openSettingsWindow()
    return null
  })
  ipcMain.handle('desktop:get-app-settings', () => getDesktopAppSettings())
  ipcMain.handle('desktop:get-login-credentials', () => getSavedLoginCredentials())
  safeHandle(
    'desktop:save-login-credentials',
    (_event, credentials: { identifier?: unknown; password?: unknown }) =>
      saveLoginCredentials({
        identifier: typeof credentials?.identifier === 'string' ? credentials.identifier : '',
        password: typeof credentials?.password === 'string' ? credentials.password : '',
      }),
  )
  ipcMain.handle('desktop:clear-login-credentials', () => clearSavedLoginCredentials())
  safeHandle(
    'desktop:set-app-setting',
    async (_event, key: DesktopAppSettingKey, value: boolean) => {
      if (
        key !== 'openAtLogin' &&
        key !== 'keepRunningInBackground' &&
        key !== 'autoCleanStorageWeekly'
      ) {
        throw new Error('unsupported_app_setting')
      }
      return setDesktopAppSetting(key, value)
    },
  )
  safeHandle('desktop:storage-snapshot', () => getDesktopStorageSnapshot())
  safeHandle('desktop:clean-storage', () => cleanDesktopStorage())
  safeHandle(
    'desktop:runtime-session-sync',
    (_event, session: DesktopRuntimeSessionSyncRequest | null) => {
      syncRuntimeSession(session)
      syncDesktopBugReporterSession(session)
      return null
    },
  )
  safeHandle('desktop:runtime-session-rotate-client-token', async () => {
    if (!clientTokenRotatePromise) {
      clientTokenRotatePromise = rotateDesktopClient()
        .then((rotated) => {
          const currentSession = getRuntimeControllerSnapshot().session
          if (
            currentSession?.mode === 'authenticated' &&
            currentSession.desktop_client?.id === rotated.client.id
          ) {
            syncRuntimeSession({
              ...currentSession,
              client_token: rotated.client_token,
              desktop_client: rotated.client,
            })
          }
          return rotated
        })
        .finally(() => {
          clientTokenRotatePromise = null
        })
    }
    return clientTokenRotatePromise
  })
  safeHandle('desktop:runtime-session-release', async (_event, revoke?: boolean) => {
    if (revoke) {
      currentWindowMode = 'login'
      persistWindowMode('login')
      await clearRendererDesktopSessions()
    }
    await releaseRuntimeSession({ revoke: Boolean(revoke) })
    return null
  })
  safeHandle(
    'desktop:set-window-mode',
    async (event: IpcMainInvokeEvent, mode: WindowMode, request?: unknown) => {
      if (mode === 'login' || mode === 'main') {
        await queueWindowModeSwitch(
          mode,
          normalizeWindowModeRequest(request),
          windowFromIpcEvent(event),
        )
      }
      return null
    },
  )
}

const hasSingleInstanceLock = initSingleInstance((argv) => {
  revealActiveWindowSafely('single-instance')
  queueDesktopDeepLink(extractDesktopDeepLink(argv))
})

if (!hasSingleInstanceLock) {
  console.info('[desktop-main] another instance is already running; exiting')
  app.exit(0)
} else {
  preparePlaywrightCDPPort()
    .then((selectedPlaywrightCDPPort) => {
      app.commandLine.appendSwitch('remote-debugging-port', String(selectedPlaywrightCDPPort))
      return app.whenReady()
    })
    .then(async () => {
      console.info('[desktop-main] playwright cdp port selected', {
        cdpPort: getPlaywrightCDPPort(),
      })
      suppressNativeWindowMenu()
      registerDesktopProtocolClient()
      currentWindowMode = readPersistedWindowMode()
      initDesktopAppSettings()
      registerBridgeHandlers()
      await initSessionRegistry()
      initAccountHealth()
      initTransport()
      initScheduler()
      startStorageCleanupScheduler()
      initProcessMetricsSampler()
      startHotViewReaper()
      startHiddenPlaywrightReaper()
      onRuntimeInvalidated((event) => {
        syncDesktopHealthIndicator(currentMainWindow())
        if (event.reason === 'playwright-cdp-fatal') {
          showTrayBalloon(
            '浏览器自动化组件不可用',
            event.message ?? '客户端已停止采集，请重启客户端或检查安全软件/端口占用。',
          )
        }
        if (event.reason === 'playwright-cdp-recovery') {
          requestPlaywrightCDPRecoveryRelaunch(event.message ?? 'playwright_cdp_endpoint_unavailable')
        }
        if (!mainRendererContents || mainRendererContents.isDestroyed()) {
          return
        }
        mainRendererContents.send('desktop:runtime-invalidated', event)
      })
      await queueWindowModeSwitch(currentWindowMode)
      initTray(
        () => {
          revealActiveWindowSafely('tray')
        },
        () => {
          quitAfterClearingSaasSession()
        },
      )
      startDesktopHealthIndicator(() => currentMainWindow())
      queueDesktopDeepLink(extractDesktopDeepLink(process.argv))
      flushPendingDesktopDeepLinks()
    })
    .catch((error) => {
      console.error('[desktop-main] startup failed', error)
    })

  app.on('activate', () => {
    revealActiveWindowSafely('activate')
  })

  app.on('open-url', (event, url) => {
    event.preventDefault()
    revealActiveWindowSafely('deep-link')
    queueDesktopDeepLink(url)
  })

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

  app.on('before-quit', (event) => {
    if (quitReleaseInFlight) {
      return
    }

    quitReleaseInFlight = true
    event.preventDefault()

    void Promise.race([
      releaseRuntimeSession(),
      new Promise<void>((resolve) => setTimeout(resolve, 1500)),
    ]).finally(() => {
      app.quit()
    })
  })
}