import { BrowserWindow, Menu, Tray, app, ipcMain } from 'electron';
import * as path from 'path';
import * as url from 'url';
import * as fs from 'fs';

let mainWindow: BrowserWindow;

async function createWindow(): Promise<void> {
  // Create the browser window.
  mainWindow = new BrowserWindow({
    fullscreen: false,
    width: 1000,
    height: 800,
    icon: path.join(__dirname, '/cic-staff-client/assets/icons/manifest-icon-512.png'),
    // Allows IPC and other APIs
    webPreferences: {
      nodeIntegration: true,
      enableRemoteModule: true,
      nodeIntegrationInWorker: true,
    }
  });
  // load the dist folder from Angular
  await mainWindow.loadURL(
    url.format({
      pathname: path.join(__dirname, '/cic-staff-client/index.html'),
      protocol: 'file',
      slashes: true
    })
  );

  // Open the DevTools.
  // mainWindow.webContents.openDevTools();

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

async function openModal(): Promise<void> {
  const modal = new BrowserWindow({
    parent: mainWindow,
    modal: true,
    show: false,
  });
  await modal.loadURL('https://dashboard.sarafu.network/');
  modal.once('ready-to-show', () => {
    modal.show();
  });
}

function isRoot(): boolean {
  return path.parse(process.cwd()).root === process.cwd();
}

function getImages(): void {
  const cwd = process.cwd();
  fs.readdir('.', { withFileTypes: true }, ((err, files) => {
    if (!err) {
      const re = /(?:\.([^.]+))?$/;
      const images = files.filter(file => file.isFile() && ['jpg', 'png'].includes(re.exec(file.name)[1])).map(file => `file://${cwd}/${file.name}`);
      mainWindow.webContents.send('getImagesResponse', images);
    }
  }));
}

function getDirectory(): void {
  fs.readdir('.', { withFileTypes: true }, (err, files) => {
    if (!err) {
      const directories = files.filter(file =>  file.isDirectory()).map(file => file.name);
      if (!isRoot()) {
        directories.unshift('..');
      }
      mainWindow.webContents.send('getDirectoryResponse', directories);
    }
  });
}

// This method will be called when Electron has finished
// initialization and is ready to create browser windows.
// Some APIs can only be used after this event occurs.
app.on('ready', async () => {
  let tray = null;
  tray = new Tray(path.join(__dirname, '/cic-staff-client/assets/icons/manifest-icon-512.png'));
  const contextMenu = Menu.buildFromTemplate([
    { label: 'Item1', type: 'radio' },
    { label: 'Item2', type: 'radio' },
    { label: 'Item3', type: 'radio', checked: true },
    { label: 'Exit', type: 'normal', click: () => { app.quit(); } },
  ]);
  tray.setToolTip('CIC Administration Dashboard.');
  // Overrides 'right-click' event.
  tray.setContextMenu(contextMenu);
  tray.on('click', (event, arg) => {
    console.log('Systray was left-clicked.', event, arg);
  });
  tray.on('double-click', (event, arg) => {
    console.log('Systray was double-clicked.', event, arg);
  });
  await createWindow();
});

app.on('activate', async () => {
  // On macOS it's common to re-create a window in the app when the
  // dock icon is clicked and there are no other windows open.
  if (BrowserWindow.getAllWindows().length === 0) {
    await createWindow();
  }
});

// Quit when all windows are closed, except on macOS. There, it's common
// for applications and their menu bar to stay active until the user quits
// explicitly with Cmd + Q.
app.on('window-all-closed', () => {
  if (process.platform !== 'darwin') {
    app.quit();
  }
});

ipcMain.on('my-custom-signal', (event, arg) => {
  console.log('Print to the main process terminal (STDOUT) when signal received from renderer process.');
  console.log(event);
  console.log(arg);
  mainWindow.webContents.send('other-custom-signal', 'message from the backend process');
});

ipcMain.on('navigateDirectory', (event, arg) => {
  process.chdir(arg);
  getImages();
  getDirectory();
});

ipcMain.on('getFiles', (event, arg) => {
  const files = fs.readdirSync(__dirname);
  mainWindow.webContents.send('getFilesResponse', files);
});

ipcMain.on('openModal', async (event, arg) => {
  await openModal();
});