Preview of async php api for mcxnow.com

FundsCommand.php

<?php

namespace App;

use CryptoBot;
use CryptoBot\McxNow\Currency;
use Nette;
use React;
use React\Promise\When;
use Symfony;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;


class FundsCommand extends Symfony\Component\Console\Command\Command
{

	protected function configure()
    {
  		$this->setName('funds');
	}


	protected function execute(InputInterface $input, OutputInterface $output)
	{
		/** @var \Nette\DI\Container $container */
		$container = $this->getHelper('dic');
		/** @var \App\ClientFactory $clientFactory */
		$clientFactory = $container->getByType('App\ClientFactory');

		$loop = React\EventLoop\Factory::create();
		$client = $clientFactory->createClient($loop);

		$printInfo = function ($data) use ($loop, $output) {
			$book = [];
			$btcBalance = 0;
			$btcOrderAmount = 0;
			$format = function ($value) {
				return number_format($value, 8, '.', '');
			};
			foreach (Currency::traded() as $i => $currency) {
				$orderAmount = 0;
				foreach ($data[$i]['orders'] as $record) {
					if ($record['buy']) {
						$btcOrderAmount += $record['amount'];
					} else {
						$orderAmount += $record['amount'];
					}
				}
				$book[(string) $currency] = [
					'balance' => $data[$i]['currency_balance'],
					'last_trade_id' => $data[$i]['last_trade_id'],
					'orders' => $data[$i]['orders'],
					'orders_amount' => $orderAmount,
					'orders_btc_amount' => $btcOrderAmount,
				];
				$btcBalance = $data[$i]['base_balance'];
			}
			foreach (Currency::traded() as $currency) {
				$record = $book[(string) $currency];
				$output->writeln((string) $currency . ' ' . $format($record['balance']) . ' (balance) + ' . $format($record['orders_amount']) . ' (' . count($record['orders']) . ' orders) = ' . $format(($record['balance'] + $record['orders_amount'])));
			}
			$output->writeln('BTC ' . $format($btcBalance) . ' + ' . $format($btcOrderAmount) . ' in orders.');
			$output->writeln('Completed in ' . round(Nette\Diagnostics\Debugger::timer('test') * 1000, 4) . 'ms');
		};
		$main = function () use ($client, $printInfo) {
			When::all(array_map($client->info, Currency::traded()))->then($printInfo);
		};

		// TODO add cookie storage
		$client->checkAuthentication()->then(function ($authenticated) use ($client, $output, $main) {
			if ($authenticated) {
				$output->writeln("<comment>Already authenticated</comment>");
				$main();
			} else {
				$output->writeln("<comment>Authenticating</comment>");
				$client->authenticate()->then($main);
			}
		});

		$loop->run();
	}

}