main.js

// Basic init
const electron = require('electron')
const path = require('path')
const Backend = require('./lib/Backend')
const R = require('ramda')
const fs = require('fs')
const {app, BrowserWindow, dialog} = electron

let config;
try {
    config = fs.readFileSync('./config.js');
} catch (err) {
    dialog.showErrorBox("Can not load configuration", "config.js can not be found in current working directory. You can always make one, by copy config.js.example, and rename it to config.js");
    process.exit(1);
}

const Config = eval(config.toString());

// Let electron reloads by itself when webpack watches changes in ./app/
if (/electron/.test(process.execPath)) {
    require('electron-reload')(path.resolve(__dirname, "app"))
}
const backend = new Backend(Config);
global.backend = backend;

// To avoid being garbage collected
let mainWindow

app.on('ready', () => {
    // BrowserWindow.addDevToolsExtension(path.resolve(__dirname, "vue-devtools.crx"));
    let mainWindow = new BrowserWindow({
        width: 1000,
        height: 600,
        minWidth: 600
    })
    mainWindow.loadURL(`file://${__dirname}/app/index.html`)

    mainWindow.on("close", () => {
        process.exit(0);
    })
    
    setInterval(() => {
        const getProgress = worker => worker.getProgress();
        const getAllProgress = R.mapObjIndexed(getProgress);
        mainWindow.webContents.send("backend-update-link", {
            downloadPool: getAllProgress(backend.downloadPool),
            needRefresh: backend.needRefresh
        });
        backend.flushState();
    }, 500);
})