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

const DEV_URL = process.env.VITE_DEV_SERVER_URL || ''

function createWindow() {
  const win = new BrowserWindow({
    width: 1240,
    height: 820,
    minWidth: 940,
    minHeight: 620,
    title: '实习工作日志',
    icon: path.join(__dirname, '..', 'build', 'icon.png'),
    autoHideMenuBar: true,
    backgroundColor: '#FFFFFF',
    webPreferences: {
      contextIsolation: true,
      nodeIntegration: false,
      preload: path.join(__dirname, 'preload.cjs'),
      spellcheck: false
    }
  })
  Menu.setApplicationMenu(null)

  // 下载接管：导出的 JSON/CSV/Markdown 弹出标准保存对话框
  win.webContents.session.on('will-download', (event, item, webContents) => {
    const result = dialog.showSaveDialogSync(win, {
      title: '保存文件',
      defaultPath: path.join(app.getPath('downloads'), item.getFilename())
    })
    if (!result) {
      event.preventDefault()
      return
    }
    item.setSavePath(result)
  })

  win.webContents.setWindowOpenHandler(({ url }) => {
    if (/^https?:/i.test(url)) shell.openExternal(url)
    return { action: 'deny' }
  })
  if (DEV_URL) {
    win.loadURL(DEV_URL)
  } else {
    win.loadFile(path.join(__dirname, '..', 'dist', 'index.html'))
  }
}

// 导出文件：渲染进程请求主进程保存（标准另存为对话框 + 直接写盘）
ipcMain.handle('export-file', async (event, payload) => {
  const win = BrowserWindow.fromWebContents(event.sender)
  const result = await dialog.showSaveDialog(win, {
    title: '保存文件',
    defaultPath: path.join(app.getPath('downloads'), payload.filename)
  })
  if (result.canceled || !result.filePath) return { saved: false, path: '' }
  fs.writeFileSync(result.filePath, payload.content, 'utf-8')
  return { saved: true, path: result.filePath }
})

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

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