// src/main/bootstrap.ts — 초기화 시퀀스

import { app, dialog, globalShortcut, ipcMain as ipcMainRef } from 'electron'
import { initLoggerService, getLogger } from './services/LoggerService'
import { initConfigService, configGet, configSet } from './services/ConfigService'
import { getHotkeyService } from './services/HotkeyService'
import { getVoiceModeService } from './services/VoiceModeService'
import { startLocalLLMAvailability } from './services/LocalLLMService'
import { getHistoryService } from './services/HistoryService'
import { persistCompletedVoiceSessionSafe } from './voice-session-persist'
import { getTextInsertService } from './services/TextInsertService'
import { getCustomInstructionService } from './services/CustomInstructionService'
import { getVoiceCommandService } from './services/VoiceCommandService'
import { getSoundEffectService } from './services/SoundEffectService'
import { getAutoLaunchService } from './services/AutoLaunchService'
import { getAudioCaptureService } from './services/AudioCaptureService'
import { initLicenseService } from './services/LicenseService'
import { openLocal } from './db'
import {
  createMainWindow,
  getMainWindow,
  preloadPopupWindows,
  showHistoryPopup,
  hideHistoryPopup,
  sendKeyToHistoryPopup,
  isHistoryPopupVisible,
  showCommandPopup,
  hideCommandPopup,
  sendKeyToCommandPopup,
  isCommandPopupVisible,
  hideRecordingTip,
  updateRecordingTipState,
} from './windows/WindowManager'
import { createTray } from './windows/TrayManager'
import { registerAllIpcHandlers } from './ipc'
import { IPC_CHANNELS } from '@d3ro/core/ipc-channels'
import type { IPCChannel } from '@d3ro/core/ipc-channels'

const logger = getLogger('bootstrap')

interface BootstrapStep {
  name: string
  critical: boolean
  fn: () => Promise<void>
}

export async function bootstrap(): Promise<void> {
  const steps: BootstrapStep[] = [
    { name: 'logger', critical: false, fn: initLogger },
    { name: 'config', critical: false, fn: initConfig },
    // 빅뱅 Phase 1.5: 앱 시작 시 익명 로컬 DB를 먼저 연다.
    // 무료 로컬 모드가 사용자 entry point — 회원가입 없이 바로 킬러 피처 사용 가능.
    // CloudSyncService._onAuthenticated()에서 로그인 시점에 user DB로 스위치한다.
    { name: 'database', critical: true, fn: initLocalDatabase },
    { name: 'license', critical: false, fn: initLicense },
    { name: 'create-windows', critical: true, fn: createWindows },
    { name: 'tray', critical: false, fn: initTray },
    { name: 'ipc-handlers', critical: true, fn: initIpcHandlers },
    { name: 'custom-instructions', critical: false, fn: initCustomInstructions },
    { name: 'voice-commands', critical: false, fn: initVoiceCommands },
    { name: 'sound-effects', critical: false, fn: initSoundEffects },
    { name: 'auto-launch', critical: false, fn: initAutoLaunch },
    { name: 'popup-preload', critical: false, fn: initPopupWindows },
    { name: 'hotkey', critical: false, fn: initHotkey },
    { name: 'voice-mode', critical: false, fn: initVoiceMode },
    { name: 'stt-warmup', critical: false, fn: initSTTWarmup },
    { name: 'llm-polling', critical: false, fn: initLLMPolling },
    { name: 'meeting-summary-wiring', critical: false, fn: initMeetingSummaryWiring },
    { name: 'meeting-mode', critical: false, fn: initMeetingMode },
    // cloud-sync는 가장 마지막에 — 세션 복원 성공 시 DB를 열고 auth-changed emit.
    { name: 'cloud-sync', critical: false, fn: initCloudSync },
    { name: 'auto-update', critical: false, fn: initAutoUpdate },
  ]

  for (const step of steps) {
    try {
      await step.fn()
      logger.info(`[bootstrap] ${step.name} initialized`)
    } catch (error) {
      logger.error(`[bootstrap] ${step.name} failed:`, error)
      if (step.critical) {
        dialog.showErrorBox(
          'D3RO-VOICE 초기화 실패',
          `${step.name}: ${error instanceof Error ? error.message : String(error)}`
        )
        app.quit()
        return
      }
    }
  }
}

async function initLogger(): Promise<void> {
  initLoggerService()
}

async function initConfig(): Promise<void> {
  initConfigService()
}

async function initLocalDatabase(): Promise<void> {
  const { created, dbPath } = openLocal()
  logger.info(`[bootstrap] local database opened: ${dbPath} (created=${created})`)
}

async function initLicense(): Promise<void> {
  initLicenseService()
}

async function createWindows(): Promise<void> {
  createMainWindow()
}

async function initTray(): Promise<void> {
  createTray()
}

async function initIpcHandlers(): Promise<void> {
  registerAllIpcHandlers()
}

async function initHotkey(): Promise<void> {
  const hotkey = getHotkeyService()
  hotkey.loadFromConfig()
  hotkey.start()
}

async function initCustomInstructions(): Promise<void> {
  getCustomInstructionService().initialize()
}

async function initVoiceCommands(): Promise<void> {
  const svc = getVoiceCommandService()
  svc.initialize()
  svc.initDefaultKeywords()
}

async function initSoundEffects(): Promise<void> {
  getSoundEffectService().initialize()
}

async function initAutoLaunch(): Promise<void> {
  getAutoLaunchService().syncWithConfig()
}

async function initAutoUpdate(): Promise<void> {
  const { getUpdateService } = await import('./services/UpdateService')
  getUpdateService().initialize()
}

async function initPopupWindows(): Promise<void> {
  preloadPopupWindows()
  setupHistoryPopupIPC()

  // 오디오 디바이스 미리 캐싱 (Settings 열 때 즉시 반환)
  getAudioCaptureService().getDevices().catch(() => { /* 실패해도 무시 */ })

  // Ctrl+Shift+V → 히스토리 팝업 토글
  globalShortcut.register('Ctrl+Shift+V', () => {
    if (isHistoryPopupVisible()) {
      hideHistoryPopup()
      unregisterPopupNavKeys()
    } else {
      const entries = getHistoryService().list({ page: 0, pageSize: 10 }).entries
      showHistoryPopup(entries as unknown as Array<Record<string, unknown>>)
      registerPopupNavKeys()
    }
  })

  // Ctrl+Shift+C → 커맨드 선택 팝업 토글
  globalShortcut.register('Ctrl+Shift+C', () => {
    if (isCommandPopupVisible()) {
      hideCommandPopup()
      unregisterPopupNavKeys()
    } else {
      const instructions = getCustomInstructionService().getAll()
      const activeId = configGet('activeInstructionId') as string | null
      showCommandPopup(instructions as unknown as Array<Record<string, unknown>>, activeId || null)
      registerPopupNavKeys('command')
    }
  })

  setupCommandPopupIPC()
}

// 히스토리 팝업 키 네비게이션 등록/해제
const POPUP_NAV_KEYS: Array<{ accel: string; key: string }> = [
  { accel: 'Up', key: 'ArrowUp' },
  { accel: 'Down', key: 'ArrowDown' },
  { accel: 'Return', key: 'Enter' },
  { accel: 'Escape', key: 'Escape' },
  { accel: '1', key: '1' }, { accel: '2', key: '2' }, { accel: '3', key: '3' },
  { accel: '4', key: '4' }, { accel: '5', key: '5' }, { accel: '6', key: '6' },
  { accel: '7', key: '7' }, { accel: '8', key: '8' }, { accel: '9', key: '9' },
]

function registerPopupNavKeys(target: 'history' | 'command' = 'history'): void {
  for (const { accel, key } of POPUP_NAV_KEYS) {
    try {
      globalShortcut.register(accel, () => {
        if (target === 'history' && isHistoryPopupVisible()) {
          sendKeyToHistoryPopup(key)
        } else if (target === 'command' && isCommandPopupVisible()) {
          sendKeyToCommandPopup(key)
        }
      })
    } catch {
      // 일부 키는 globalShortcut으로 등록 불가할 수 있음
    }
  }
}

function unregisterPopupNavKeys(): void {
  for (const { accel } of POPUP_NAV_KEYS) {
    try {
      globalShortcut.unregister(accel)
    } catch {
      // 이미 해제된 경우 무시
    }
  }
}

async function initVoiceMode(): Promise<void> {
  const voiceMode = getVoiceModeService()
  voiceMode.connectHotkey()

  const soundEffect = getSoundEffectService()

  // 효과음 연동 (팝업 제어는 VoiceModeService 내부에서 처리)
  voiceMode.on('session-started', () => {
    soundEffect.play('recording-start')
  })

  voiceMode.on('session-completed', ({ session, finalText }) => {
    soundEffect.play('recording-stop')

    persistCompletedVoiceSessionSafe(
      (error, failedSession) => {
        voiceMode.emit('error', { error, session: failedSession })
      },
      session,
      finalText,
    )

    notifyRenderer(IPC_CHANNELS.APP.DATA_CHANGED, { type: 'session-completed' })
  })

  voiceMode.on('session-cancelled', ({ reason }) => {
    if (reason !== 'too-short') {
      soundEffect.play('cancel')
    }
    hideRecordingTip()
  })

  voiceMode.on('error', ({ error }) => {
    soundEffect.play('error')
    updateRecordingTipState('error', { errorMessage: error.message })
    setTimeout(() => hideRecordingTip(), 3000)
  })
}

/** 메인 윈도우 렌더러에 UI 갱신 이벤트 전송 */
function notifyRenderer(channel: IPCChannel, data?: Record<string, unknown>): void {
  const win = getMainWindow()
  if (win && !win.isDestroyed()) {
    win.webContents.send(channel, data ?? {})
  }
}

async function initLLMPolling(): Promise<void> {
  await startLocalLLMAvailability()
}

/**
 * 로컬 STT(sidecar + Whisper 모델)를 앱 시작 시 백그라운드로 미리 데운다.
 * 첫 받아쓰기에서 모델 로딩(수초)을 기다리는 체감 지연을 없앤다.
 * bootstrap을 막지 않도록 await하지 않는다 — 실패는 warmUpLocal이 흡수한다.
 */
async function initSTTWarmup(): Promise<void> {
  try {
    const { getSTTManager } = await import('./services/stt/STTManager')
    void getSTTManager().warmUpLocal()
  } catch (err) {
    logger.warn('STT warmup scheduling failed:', err)
  }
}

async function initCloudSync(): Promise<void> {
  const { getCloudSyncService } = await import('./services/CloudSyncService')
  const sync = getCloudSyncService()
  await sync.init()
}

async function initMeetingSummaryWiring(): Promise<void> {
  try {
    const { getCaptionService } = await import('./services/CaptionService')
    const { getMeetingSummaryService } = await import('./services/MeetingSummaryService')
    const captionService = getCaptionService()
    const summaryService = getMeetingSummaryService()

    captionService.on('session-saved', (summary: { sessionId: string }) => {
      // 회의 모드가 CaptionService를 사용 중이면 MeetingSummary 자동 생성 건너뛰기
      import('./services/MeetingModeService').then(({ getMeetingModeService }) => {
        if (getMeetingModeService().isMeetingModeActive()) {
          logger.info('Skipping auto meeting summary: meeting mode active')
          return
        }
        summaryService.onCaptionSessionSaved(summary).catch((err) => {
          logger.warn('Auto meeting summary failed:', err)
        })
      }).catch(() => {
        // MeetingModeService 로드 실패 시 기본 동작 수행
        summaryService.onCaptionSessionSaved(summary).catch((err) => {
          logger.warn('Auto meeting summary failed:', err)
        })
      })
    })
  } catch (err) {
    logger.warn('Meeting summary wiring failed:', err)
  }
}

async function initMeetingMode(): Promise<void> {
  // MeetingModeService 싱글톤 초기화 (첫 접근 시 인스턴스 생성)
  const { getMeetingModeService } = await import('./services/MeetingModeService')
  getMeetingModeService()
  // MeetingDocTemplateService 싱글톤 초기화 (빌트인 템플릿 보장)
  const { getMeetingDocTemplateService } = await import('./services/MeetingDocTemplateService')
  getMeetingDocTemplateService()
}

// ── HistoryPopup IPC 연동 ────────────────────────────

function setupHistoryPopupIPC(): void {
  // 히스토리 팝업 열기 (핫키에서 호출)
  ipcMainRef.on(IPC_CHANNELS.POPUP_HISTORY.SHOW_POPUP, () => {
    const entries = getHistoryService().list({ page: 0, pageSize: 10 }).entries
    showHistoryPopup(entries as unknown as Array<Record<string, unknown>>)
  })

  // 아이템 선택 → 텍스트 삽입
  ipcMainRef.on(IPC_CHANNELS.POPUP_HISTORY.ITEM_SELECTED, (_event: Electron.IpcMainEvent, data: { text: string }) => {
    hideHistoryPopup()
    unregisterPopupNavKeys()
    setTimeout(async () => {
      try {
        await getTextInsertService().insertText(data.text)
      } catch (error) {
        logger.warn(`History popup insert failed: ${error instanceof Error ? error.message : String(error)}`)
      }
    }, 200)
  })

  // 팝업 닫기
  ipcMainRef.on(IPC_CHANNELS.POPUP_HISTORY.POPUP_DISMISSED, () => {
    hideHistoryPopup()
    unregisterPopupNavKeys()
  })
}

// ── CommandPopup IPC 연동 ────────────────────────────

function setupCommandPopupIPC(): void {
  // 명령어 선택 → 활성 명령어로 설정
  ipcMainRef.on(IPC_CHANNELS.POPUP_COMMAND.SELECTED, (_event: Electron.IpcMainEvent, data: { id: string; name: string }) => {
    hideCommandPopup()
    unregisterPopupNavKeys()

    if (data.id) {
      // 명령어 선택 → 활성 명령어로 설정
      configSet('activeInstructionId', data.id)
      configSet('defaultLLMAction', 'custom')
      logger.info(`Active command set: ${data.name} (${data.id})`)
    } else {
      // 선택 해제 → 명령어 없음 (원본 삽입)
      configSet('activeInstructionId', '')
      configSet('defaultLLMAction', 'none')
      logger.info('Active command cleared (none)')
    }

    // CMD 페이지 UI 갱신 알림
    notifyRenderer(IPC_CHANNELS.APP.DATA_CHANGED, { type: 'command-changed', activeId: data.id })
  })

  // 팝업 닫기
  ipcMainRef.on(IPC_CHANNELS.POPUP_COMMAND.DISMISSED, () => {
    hideCommandPopup()
    unregisterPopupNavKeys()
  })
}