index.js

const path = require('path');
const electron = require('electron');
const ffmpeg = require('fluent-ffmpeg');
const ConvTray = require('./myapp/conv_tray');
const _ = require('lodash');

const { app, BrowserWindow, ipcMain, shell, Menu } = electron;

let mainWindow;
let tray;

app.on('ready', () => {
  mainWindow = new BrowserWindow({
    height: 600,
    width: 800,
    frame: true,
    icon: `${__dirname}/src/assets/64x64.png`,
    webPreferences: { backgroundThrottling: true },
  });
  mainWindow.loadURL(`file://${__dirname}/src/index.html`);

  const mainMenu = Menu.buildFromTemplate(menuTemplate);
  Menu.setApplicationMenu(mainMenu);

  const iconName = process.platform === 'win32' ? 'windows-icon@2x.png' : 'iconTemplate.png';
  const iconPath = path.join(__dirname, `./src/assets/${iconName}`);
  tray = new ConvTray(iconPath, mainWindow);

  mainWindow.on('minimize',function(event){
    event.preventDefault();
    mainWindow.hide();
  });
  mainWindow.on('closed',  () => {
    mainWindow = null;
  });
});

const menuTemplate = [{}];

ipcMain.on('videos:added', (event, videos) => {
  const promises = _.map(videos, video => {
    return new Promise((resolve, reject) => {
      ffmpeg.ffprobe(video.path, (err, metadata) => {
        video.duration = metadata.format.duration;
        video.format = 'avi';
        resolve(video);
      });
    });
  });

  Promise.all(promises)
    .then((results) => {
      mainWindow.webContents.send('metadata:complete', results);
    });
});

ipcMain.on('conversion:start', (event, videos) => {
  _.each(videos, video => {
    const outputDirectory = video.path.split(video.name)[0];
    const outputName = video.name.split('.')[0]
    const outputPath = `${outputDirectory}${outputName}.${video.format}`;

    ffmpeg(video.path)
      .output(outputPath)
      .on('progress', ({ timemark }) =>
        mainWindow.webContents.send('conversion:progress', { video, timemark })
      )
      .on('end', () =>
        mainWindow.webContents.send('conversion:end', { video, outputPath })
      )
      .run();
  });
});

ipcMain.on('folder:open', (event, outputPath) => {
  shell.showItemInFolder(outputPath);
});