/**
 * OpsXShell - Main Process Entry
 * 跨平台 SSH/SFTP 终端工具 · 简洁高效 · 安全可靠
 */

import { app, BrowserWindow, Menu, shell, dialog } from 'electron'
import path from 'path'
import { createLogger } from './utils/logger'

const logger = createLogger('Main')

// Services
import { SSHService } from './services/ssh-service'
import { DatabaseService } from './services/database-service'
import { keyService } from './services/key-service'
import { ZmodemService } from './services/zmodem-service'

// IPC Handlers
import { registerAllIPCHandlers } from './ipc'

// ============== Global State ==============

let mainWindow: BrowserWindow | null = null

// Services (initialized after app ready)
let sshService: SSHService
let zmodemService: ZmodemService
let dbService: DatabaseService | null = null

// ============== Window Management ==============

function createWindow(): void {
  mainWindow = new BrowserWindow({
    width: 1400,
    height: 900,
    minWidth: 1000,
    minHeight: 600,
    titleBarStyle: 'hiddenInset',
    webPreferences: {
      preload: path.join(__dirname, 'preload.js'),
      contextIsolation: true,
      nodeIntegration: false,
      sandbox: false,
    },
    show: false,
    backgroundColor: '#0f172a',
  })

  // Load the app
  if (process.env.VITE_DEV_SERVER_URL) {
    mainWindow.loadURL(process.env.VITE_DEV_SERVER_URL)
    // DevTools 通过快捷键 Cmd+Option+I 打开，不自动调用
  } else {
    mainWindow.loadFile(path.join(__dirname, '../dist/index.html'))
  }

  // Show window when ready
  mainWindow.once('ready-to-show', () => {
    mainWindow?.show()
  })

  // Handle window closed
  mainWindow.on('closed', () => {
    mainWindow = null
  })

  // Open external links in browser
  mainWindow.webContents.setWindowOpenHandler(({ url }) => {
    shell.openExternal(url)
    return { action: 'deny' }
  })

  // Set up application menu
  createApplicationMenu()
}

// ============== Application Menu ==============

function createApplicationMenu(): void {
  const template: Electron.MenuItemConstructorOptions[] = [
    {
      label: 'OpsXShell',
      submenu: [
        {
          label: '关于 OpsXShell',
          click: () => {
            dialog.showMessageBox(mainWindow!, {
              type: 'info',
              title: '关于 OpsXShell',
              message: 'OpsXShell v1.0.0',
              detail: '跨平台 SSH/SFTP 终端工具 · 简洁高效 · 安全可靠\n\nMIT License',
            })
          },
        },
        { type: 'separator' },
        {
          label: '退出',
          accelerator: process.platform === 'darwin' ? 'Cmd+Q' : 'Ctrl+Q',
          click: () => {
            app.quit()
          },
        },
      ],
    },
    {
      label: '会话',
      submenu: [
        {
          label: '新建会话',
          accelerator: 'CmdOrCtrl+N',
          click: () => {
            mainWindow?.webContents.send('menu-new-session')
          },
        },
        {
          label: '快速连接',
          accelerator: 'CmdOrCtrl+K',
          click: () => {
            mainWindow?.webContents.send('menu-quick-connect')
          },
        },
        { type: 'separator' },
        {
          label: '导入会话',
          click: () => {
            mainWindow?.webContents.send('menu-import-sessions')
          },
        },
        {
          label: '导出会话',
          click: () => {
            mainWindow?.webContents.send('menu-export-sessions')
          },
        },
      ],
    },
    {
      label: '编辑',
      submenu: [
        { role: 'undo' },
        { role: 'redo' },
        { type: 'separator' },
        { role: 'cut' },
        { role: 'copy' },
        { role: 'paste' },
        { role: 'selectAll' },
      ],
    },
    {
      label: '视图',
      submenu: [
        {
          label: '重新加载',
          accelerator: 'CmdOrCtrl+R',
          click: () => {
            mainWindow?.webContents.reload()
          },
        },
        {
          label: '切换开发者工具',
          accelerator: process.platform === 'darwin' ? 'Alt+Cmd+I' : 'F12',
          click: () => {
            mainWindow?.webContents.toggleDevTools()
          },
        },
        { type: 'separator' },
        { role: 'resetZoom' },
        { role: 'zoomIn' },
        { role: 'zoomOut' },
        { type: 'separator' },
        { role: 'togglefullscreen' },
      ],
    },
    {
      label: '窗口',
      submenu: [
        { role: 'minimize' },
        { role: 'close' },
      ],
    },
    {
      label: '帮助',
      submenu: [
        {
          label: '文档',
          click: () => {
            shell.openExternal('https://github.com/opsxshell/docs')
          },
        },
        {
          label: '报告问题',
          click: () => {
            shell.openExternal('https://github.com/opsxshell/issues')
          },
        },
      ],
    },
  ]

  const menu = Menu.buildFromTemplate(template)
  Menu.setApplicationMenu(menu)
}

// ============== App Lifecycle ==============

app.whenReady().then(async () => {
  // Initialize encryption key first
  keyService.getMasterKey()
  logger.info('[App] Encryption key initialized')

  // Initialize services
  sshService = new SSHService()
  zmodemService = new ZmodemService()
  dbService = new DatabaseService()
  await dbService.initialize()

  // Register IPC handlers
  registerAllIPCHandlers({
    sshService,
    databaseService: dbService,
    zmodemService,
    mainWindowGetter: () => mainWindow,
  })
  logger.info('[App] IPC handlers registered')

  // Create main window
  createWindow()

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

app.on('window-all-closed', () => {
  // Close all SSH connections
  sshService?.disconnectAll()

  // Close database
  dbService?.close()

  if (process.platform !== 'darwin') {
    app.quit()
  }
})

app.on('before-quit', () => {
  sshService?.disconnectAll()
  dbService?.close()
})