import { app, BrowserWindow, ipcMain } from 'electron'
import { existsSync } from 'fs'
import { join } from 'path'
import { IPC } from '../shared/ipc-channels'
import { getShortcutManager, getSnapshotService, registerIpc } from './ipc/register'
import { closeAllBookDbs } from './db/connection'

if (process.env.BILIN_E2E === '1' && process.env.BILIN_E2E_USER_DATA) {
  app.setPath('userData', process.env.BILIN_E2E_USER_DATA)
}

let mainWindow: BrowserWindow | null = null

function preloadPath(): string {
  const dir = join(__dirname, '../preload')
  const mjs = join(dir, 'index.mjs')
  if (existsSync(mjs)) return mjs
  return join(dir, 'index.js')
}

function createWindow(): void {  mainWindow = new BrowserWindow({
    width: 1280,
    height: 800,
    minWidth: 960,
    minHeight: 600,
    frame: false,
    titleBarStyle: 'hidden',
    webPreferences: {
      preload: preloadPath(),
      contextIsolation: true,
      nodeIntegration: false
    }
  })

  if (process.env.ELECTRON_RENDERER_URL) {
    mainWindow.loadURL(process.env.ELECTRON_RENDERER_URL)
  } else {
    mainWindow.loadFile(join(__dirname, '../renderer/index.html'))
  }

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

  getShortcutManager()?.setWindow(mainWindow)
}

app.whenReady().then(() => {
  registerIpc()

  ipcMain.handle(IPC.WINDOW_MINIMIZE, (event) => {
    BrowserWindow.fromWebContents(event.sender)?.minimize()
  })
  ipcMain.handle(IPC.WINDOW_MAXIMIZE, (event) => {
    const win = BrowserWindow.fromWebContents(event.sender)
    if (!win) return
    if (win.isMaximized()) win.unmaximize()
    else win.maximize()
  })
  ipcMain.handle(IPC.WINDOW_CLOSE, (event) => {
    BrowserWindow.fromWebContents(event.sender)?.close()
  })

  createWindow()
})

app.on('window-all-closed', () => {
  getShortcutManager()?.unregisterAll()
  getSnapshotService()?.stopAll()
  closeAllBookDbs()
  if (process.platform !== 'darwin') app.quit()
})

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

app.on('before-quit', () => {
  getSnapshotService()?.stopAll()
})

app.on('will-quit', () => {
  getShortcutManager()?.unregisterAll()
})