import { app, BrowserWindow, Menu, shell } from 'electron'
import type { BrowserWindow as BrowserWindowInstance, Event, MenuItemConstructorOptions } from 'electron'
import path from 'node:path'

const isDev = !app.isPackaged
const devServerUrl = process.env.VITE_DEV_SERVER_URL ?? 'http://localhost:5200'
const appIconPath = isDev
  ? path.join(process.cwd(), 'build', 'icon.png')
  : path.join(process.resourcesPath, 'build', 'icon.png')

let mainWindow: BrowserWindowInstance | null = null

function sendAppCommand(command: string): void {
  if (!mainWindow || mainWindow.isDestroyed()) return
  mainWindow.webContents.send('ruwio:menu-command', command)
}

function createMainWindow(): void {
  mainWindow = new BrowserWindow({
    width: 1280,
    height: 860,
    minWidth: 1024,
    minHeight: 700,
    title: 'RUWIO',
    icon: appIconPath,
    show: false,
    backgroundColor: '#14171f',
    webPreferences: {
      preload: path.join(__dirname, 'preload.cjs'),
      contextIsolation: true,
      nodeIntegration: false,
      sandbox: true,
    },
  })

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

  mainWindow.webContents.setWindowOpenHandler(({ url }: { url: string }) => {
    if (url.startsWith('https://') || url.startsWith('http://')) {
      void shell.openExternal(url)
    }
    return { action: 'deny' }
  })

  mainWindow.webContents.on('will-navigate', (event: Event, url: string) => {
    const allowedUrl = isDev ? devServerUrl : `file://${path.join(app.getAppPath(), 'dist', 'index.html')}`
    if (!url.startsWith(allowedUrl)) {
      event.preventDefault()
    }
  })

  if (isDev) {
    void mainWindow.loadURL(devServerUrl)
    mainWindow.webContents.openDevTools({ mode: 'detach' })
  } else {
    void mainWindow.loadFile(path.join(app.getAppPath(), 'dist', 'index.html'))
  }
}

function createMenu(): void {
  const template: MenuItemConstructorOptions[] = [
    {
      label: 'File',
      submenu: [
        {
          label: 'New Project',
          accelerator: 'CmdOrCtrl+N',
          click: () => sendAppCommand('new-project'),
        },
        {
          label: 'Open...',
          accelerator: 'CmdOrCtrl+O',
          click: () => sendAppCommand('open-project'),
        },
        {
          label: 'Recent Projects',
          accelerator: 'CmdOrCtrl+Shift+O',
          click: () => sendAppCommand('recent-projects'),
        },
        { type: 'separator' },
        {
          label: 'Save',
          accelerator: 'CmdOrCtrl+S',
          click: () => sendAppCommand('save-project'),
        },
        {
          label: 'Save As...',
          accelerator: 'CmdOrCtrl+Shift+S',
          click: () => sendAppCommand('save-project-as'),
        },
        { type: 'separator' },
        {
          label: 'Export...',
          accelerator: 'CmdOrCtrl+E',
          click: () => sendAppCommand('export-project'),
        },
        { type: 'separator' },
        process.platform === 'darwin' ? { role: 'close' } : { role: 'quit' },
      ],
    },
    {
      label: 'Edit',
      submenu: [
        {
          label: 'Undo',
          accelerator: 'CmdOrCtrl+Z',
          click: () => sendAppCommand('undo'),
        },
        {
          label: 'Redo',
          accelerator: 'CmdOrCtrl+Shift+Z',
          click: () => sendAppCommand('redo'),
        },
        { type: 'separator' },
        { role: 'cut' },
        { role: 'copy' },
        { role: 'paste' },
        { role: 'selectAll' },
        { type: 'separator' },
        {
          label: 'Copy Current Frame',
          accelerator: 'CmdOrCtrl+Alt+C',
          click: () => sendAppCommand('copy-current-frame'),
        },
      ],
    },
    {
      label: 'View',
      submenu: [
        { role: 'reload' },
        { role: 'forceReload' },
        { role: 'toggleDevTools' },
        { type: 'separator' },
        {
          label: 'Play / Pause',
          accelerator: 'Space',
          click: () => sendAppCommand('toggle-playback'),
        },
        {
          label: 'Stop',
          accelerator: 'Escape',
          click: () => sendAppCommand('stop-playback'),
        },
        {
          label: 'Jump to Start',
          accelerator: 'R',
          click: () => sendAppCommand('rewind'),
        },
        {
          label: 'Fullscreen Preview',
          accelerator: 'Shift+Space',
          click: () => sendAppCommand('fullscreen-preview'),
        },
        { type: 'separator' },
        {
          label: 'Toggle Side Panels',
          accelerator: 'Tab',
          click: () => sendAppCommand('toggle-panels'),
        },
        {
          label: 'Media Library',
          accelerator: 'CmdOrCtrl+M',
          click: () => sendAppCommand('media-library'),
        },
        {
          label: 'Document Settings',
          accelerator: 'CmdOrCtrl+,',
          click: () => sendAppCommand('document-settings'),
        },
        { type: 'separator' },
        { role: 'resetZoom' },
        { role: 'zoomIn' },
        { role: 'zoomOut' },
        { type: 'separator' },
        { role: 'togglefullscreen' },
      ],
    },
    {
      label: 'Window',
      submenu: [
        { role: 'minimize' },
        { role: 'zoom' },
      ],
    },
    {
      label: 'Help',
      submenu: [
        {
          label: 'RUWIO Help',
          accelerator: 'F1',
          click: () => sendAppCommand('help'),
        },
        {
          label: 'About RUWIO',
          click: () => sendAppCommand('about'),
        },
        ...(isDev
          ? [
              { type: 'separator' as const },
              {
                label: 'Open Test Runner',
                accelerator: 'CmdOrCtrl+Shift+Alt+T',
                click: () => sendAppCommand('test-runner'),
              },
            ]
          : []),
      ],
    },
  ]

  if (process.platform === 'darwin') {
    template.unshift({
      label: app.name,
      submenu: [
        { role: 'about' },
        { type: 'separator' },
        { role: 'services' },
        { type: 'separator' },
        { role: 'hide' },
        { role: 'hideOthers' },
        { role: 'unhide' },
        { type: 'separator' },
        { role: 'quit' },
      ],
    })
  }

  Menu.setApplicationMenu(Menu.buildFromTemplate(template))
}

app.setName('RUWIO')

app.whenReady().then(() => {
  createMenu()
  createMainWindow()

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

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