launch

#!/usr/bin/env node

const http = require('http');
const { join } = require('path');
const { spawn } = require('child_process');
const { platform } = require('os');
const { env, versions } = require('process');
const PORT = require('./../ports.json').qunit;

if(parseInt(versions.node.split('.')[0]) < 6) {
    throw 'Node version is too low';
}

execRunner();

function execRunner () {
    spawn(
        'dotnet',
        [ join(__dirname, 'runner/bin/runner.dll') ],
        { stdio: 'inherit', shell: true }
    );

    waitForRunner();
}

function waitForRunner() {
    const timestamp = Date.now();

    http
        .request({ port: PORT }, openBrowser)
        .on('error', () => setTimeout(
            () => {
                console.log('waiting...');
                waitForRunner();
            },
            Math.max(0, 300 - Date.now() + timestamp)
        ))
        .end();
}

function openBrowser() {
    spawn(
        getBrowserCommand(),
        [ 'http://localhost:' + PORT ],
        { shell: true, detached: true }
    );
}

function getBrowserCommand() {
    switch(platform()) {
        case 'win32':
            return 'start';

        case 'darwin':
            return 'open';

        case 'linux':
            return 'xdg-open';
    }

    throw 'Not implemented';
}