const electron = require('electron');
// Module to control application life.
const app = electron.app;
// Module to create native browser window.
const BrowserWindow = electron.BrowserWindow;

const path = require('path');
const url = require('url');

// Keep a global reference of the window object, if you don't, the window will
// be closed automatically when the JavaScript object is garbage collected.
let mainWindow;

const createWindow = () => {
	// Create the browser window.
	mainWindow = new BrowserWindow({
		height: 600,
		width: 800,
	});

	// load the index.html of the app.
	const startUrl = process.env.ELECTRON_START_URL || url.format({
		pathname: path.join(__dirname, '/../../build/index.html'),
		protocol: 'file:',
		slashes: true,
	});
	mainWindow.loadURL(startUrl);
	// Open the DevTools.
	mainWindow.webContents.openDevTools();

	// Emitted when the window is closed.
	mainWindow.on('closed', () => {
		// Dereference the window object, usually you would store windows
		// in an array if your app supports multi windows, this is the time
		// when you should delete the corresponding element.
		mainWindow = null;
	});
};

// 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', createWindow);

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

app.on('activate', () => {
	// On OS X 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 (mainWindow === null) {
		createWindow();
	}
});

// In this file you can include the rest of your app's specific main process
// code. You can also put them in separate files and require them here.