const { app, BrowserWindow, ipcMain, dialog } = require('electron')
const path = require('path')
const fs = require('fs')

console.log('main.js loaded')
console.log('app.getPath("home"):', app.getPath('home'))

const SETTINGS_FILE = path.join(app.getPath('home'), '.iflow', 'settings.json')
console.log('SETTINGS_FILE:', SETTINGS_FILE)

let mainWindow

const isDev = process.argv.includes('--dev')

function createWindow() {
  console.log('Creating window...')

  mainWindow = new BrowserWindow({
    width: 1100,
    height: 750,
    minWidth: 900,
    minHeight: 600,
    backgroundColor: '#f3f3f3',
    frame: false,
    show: false,
    webPreferences: {
      devTools: true,
      preload: path.join(__dirname, 'preload.js'),
      contextIsolation: true,
      nodeIntegration: false,
      webSecurity: false,
    },
  })

  console.log('Loading index.html...')
  if (isDev) {
    mainWindow.loadURL('http://localhost:5173')
  } else {
    mainWindow.loadFile(path.join(__dirname, 'dist', 'index.html'))
  }
  console.log('index.html loading initiated')

  mainWindow.webContents.on('did-fail-load', (event, errorCode, errorDescription) => {
    console.error('Failed to load:', errorCode, errorDescription)
  })

  mainWindow.webContents.on('console-message', (event, level, message, line, sourceId) => {
    console.log('Console [' + level + ']:', message)
  })

  mainWindow.once('ready-to-show', () => {
    console.log('Window ready to show')
    mainWindow.show()
  })

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

app.whenReady().then(createWindow)

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

app.on('activate', () => {
  if (mainWindow === null) {
    createWindow()
  }
})

// Window controls
ipcMain.on('window-minimize', () => mainWindow.minimize())
ipcMain.on('window-maximize', () => {
  if (mainWindow.isMaximized()) {
    mainWindow.unmaximize()
  } else {
    mainWindow.maximize()
  }
})
ipcMain.on('window-close', () => mainWindow.close())

ipcMain.handle('is-maximized', () => mainWindow.isMaximized())

// API 配置相关的字段
const API_FIELDS = ['selectedAuthType', 'apiKey', 'baseUrl', 'modelName', 'searchApiKey', 'cna']

// 读取设置文件
function readSettings() {
  if (!fs.existsSync(SETTINGS_FILE)) {
    return null
  }
  const data = fs.readFileSync(SETTINGS_FILE, 'utf-8')
  return JSON.parse(data)
}

// 写入设置文件
function writeSettings(data) {
  if (fs.existsSync(SETTINGS_FILE)) {
    const backupPath = SETTINGS_FILE + '.bak'
    fs.copyFileSync(SETTINGS_FILE, backupPath)
  }
  fs.writeFileSync(SETTINGS_FILE, JSON.stringify(data, null, 2), 'utf-8')
}

// 获取 API 配置列表
ipcMain.handle('list-api-profiles', async () => {
  try {
    const settings = readSettings()
    if (!settings) {
      return { success: false, error: '配置文件不存在', profiles: [], currentProfile: '' }
    }
    
    const profiles = settings.apiProfiles || {}
    const profileList = Object.keys(profiles).map(name => ({
      name,
      isDefault: name === 'default'
    }))
    
    return { 
      success: true, 
      profiles: profileList, 
      currentProfile: settings.currentApiProfile || 'default'
    }
  } catch (error) {
    return { success: false, error: error.message, profiles: [], currentProfile: '' }
  }
})

// 切换 API 配置
ipcMain.handle('switch-api-profile', async (event, profileName) => {
  try {
    const settings = readSettings()
    if (!settings) {
      return { success: false, error: '配置文件不存在' }
    }
    
    const profiles = settings.apiProfiles || {}
    if (!profiles[profileName]) {
      return { success: false, error: `配置 "${profileName}" 不存在` }
    }
    
    // 保存当前配置到 apiProfiles（如果当前配置存在）
    const currentProfile = settings.currentApiProfile || 'default'
    if (profiles[currentProfile]) {
      const currentConfig = {}
      for (const field of API_FIELDS) {
        if (settings[field] !== undefined) {
          currentConfig[field] = settings[field]
        }
      }
      profiles[currentProfile] = currentConfig
    }
    
    // 从 apiProfiles 加载新配置到主字段
    const newConfig = profiles[profileName]
    for (const field of API_FIELDS) {
      if (newConfig[field] !== undefined) {
        settings[field] = newConfig[field]
      }
    }
    
    settings.currentApiProfile = profileName
    settings.apiProfiles = profiles
    
    writeSettings(settings)
    
    return { success: true, data: settings }
  } catch (error) {
    return { success: false, error: error.message }
  }
})

// 创建新的 API 配置
ipcMain.handle('create-api-profile', async (event, name) => {
  try {
    const settings = readSettings()
    if (!settings) {
      return { success: false, error: '配置文件不存在' }
    }
    
    if (!settings.apiProfiles) {
      settings.apiProfiles = { default: {} }
      // 初始化 default 配置
      for (const field of API_FIELDS) {
        if (settings[field] !== undefined) {
          settings.apiProfiles.default[field] = settings[field]
        }
      }
    }
    
    if (settings.apiProfiles[name]) {
      return { success: false, error: `配置 "${name}" 已存在` }
    }
    
    // 复制当前配置到新配置
    const newConfig = {}
    for (const field of API_FIELDS) {
      if (settings[field] !== undefined) {
        newConfig[field] = settings[field]
      }
    }
    settings.apiProfiles[name] = newConfig
    
    writeSettings(settings)
    
    return { success: true }
  } catch (error) {
    return { success: false, error: error.message }
  }
})

// 删除 API 配置
ipcMain.handle('delete-api-profile', async (event, name) => {
  try {
    const settings = readSettings()
    if (!settings) {
      return { success: false, error: '配置文件不存在' }
    }
    
    if (name === 'default') {
      return { success: false, error: '不能删除默认配置' }
    }
    
    const profiles = settings.apiProfiles || {}
    if (!profiles[name]) {
      return { success: false, error: `配置 "${name}" 不存在` }
    }
    
    delete profiles[name]
    settings.apiProfiles = profiles
    
    // 如果删除的是当前配置，切换到 default
    if (settings.currentApiProfile === name) {
      settings.currentApiProfile = 'default'
      if (profiles.default) {
        for (const field of API_FIELDS) {
          if (profiles.default[field] !== undefined) {
            settings[field] = profiles.default[field]
          }
        }
      }
    }
    
    writeSettings(settings)
    
    return { success: true, data: settings }
  } catch (error) {
    return { success: false, error: error.message }
  }
})

// 重命名 API 配置
ipcMain.handle('rename-api-profile', async (event, oldName, newName) => {
  try {
    const settings = readSettings()
    if (!settings) {
      return { success: false, error: '配置文件不存在' }
    }
    
    if (oldName === 'default') {
      return { success: false, error: '不能重命名默认配置' }
    }
    
    const profiles = settings.apiProfiles || {}
    if (!profiles[oldName]) {
      return { success: false, error: `配置 "${oldName}" 不存在` }
    }
    
    if (profiles[newName]) {
      return { success: false, error: `配置 "${newName}" 已存在` }
    }
    
    profiles[newName] = profiles[oldName]
    delete profiles[oldName]
    settings.apiProfiles = profiles
    
    if (settings.currentApiProfile === oldName) {
      settings.currentApiProfile = newName
    }
    
    writeSettings(settings)
    
    return { success: true }
  } catch (error) {
    return { success: false, error: error.message }
  }
})

// IPC Handlers
ipcMain.handle('load-settings', async () => {
  try {
    if (!fs.existsSync(SETTINGS_FILE)) {
      return { success: false, error: 'File not found', data: null }
    }
    const data = fs.readFileSync(SETTINGS_FILE, 'utf-8')
    const json = JSON.parse(data)
    return { success: true, data: json }
  } catch (error) {
    return { success: false, error: error.message, data: null }
  }
})

ipcMain.handle('save-settings', async (event, data) => {
  try {
    // 保存时同步更新 apiProfiles 中的当前配置
    const currentProfile = data.currentApiProfile || 'default'
    if (!data.apiProfiles) {
      data.apiProfiles = {}
    }
    
    // 更新当前配置到 apiProfiles
    const currentConfig = {}
    for (const field of API_FIELDS) {
      if (data[field] !== undefined) {
        currentConfig[field] = data[field]
      }
    }
    data.apiProfiles[currentProfile] = currentConfig
    
    writeSettings(data)
    return { success: true }
  } catch (error) {
    return { success: false, error: error.message }
  }
})

ipcMain.handle('show-message', async (event, { type, title, message }) => {
  return dialog.showMessageBox(mainWindow, { type, title, message })
})