<?php

namespace Composer\Util;

use React\Promise\CancellablePromiseInterface;
use React\Promise\PromiseInterface;
use Symfony\Component\Console\Helper\ProgressBar;

/**
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class Loop
{
    /** @var HttpDownloader */
    private $httpDownloader;

    /** @var ProcessExecutor|null */
    private $processExecutor;

    /** @var PromiseInterface[][] */
    private $currentPromises = [];

    /** @var int */
    private $waitIndex = 0;

    public function __construct(HttpDownloader $httpDownloader, ?ProcessExecutor $processExecutor = null)
    {
        $this->httpDownloader = $httpDownloader;
        $this->httpDownloader->enableAsync();

        $this->processExecutor = $processExecutor;
        if ($this->processExecutor) {
            $this->processExecutor->enableAsync();
        }
    }

    public function getHttpDownloader(): HttpDownloader
    {
        return $this->httpDownloader;
    }

    public function getProcessExecutor(): ?ProcessExecutor
    {
        return $this->processExecutor;
    }

    /**
     * @param  PromiseInterface[] $promises
     * @param  ?ProgressBar       $progress
     */
    public function wait(array $promises, ?ProgressBar $progress = null): void
    {
        /** @var \Exception|null */
        $uncaught = null;

        \React\Promise\all($promises)->then(
            static function (): void {
            },
            static function ($e) use (&$uncaught): void {
                $uncaught = $e;
            }
        );

        // keep track of every group of promises that is waited on, so abortJobs can
        // cancel them all, even if wait() was called within a wait()
        $waitIndex = $this->waitIndex++;
        $this->currentPromises[$waitIndex] = $promises;

        if ($progress) {
            $totalJobs = 0;
            $totalJobs += $this->httpDownloader->countActiveJobs();
            if ($this->processExecutor) {
                $totalJobs += $this->processExecutor->countActiveJobs();
            }
            $progress->start($totalJobs);
        }

        $lastUpdate = 0;
        while (true) {
            $activeJobs = 0;

            $activeJobs += $this->httpDownloader->countActiveJobs();
            if ($this->processExecutor) {
                $activeJobs += $this->processExecutor->countActiveJobs();
            }

            if ($progress && microtime(true) - $lastUpdate > 0.1) {
                $lastUpdate = microtime(true);
                $progress->setProgress($progress->getMaxSteps() - $activeJobs);
            }

            if (!$activeJobs) {
                break;
            }
        }

        // as we skip progress updates if they are too quick, make sure we do one last one here at 100%
        if ($progress) {
            $progress->finish();
        }

        unset($this->currentPromises[$waitIndex]);
        if ($uncaught) {
            throw $uncaught;
        }
    }

    public function abortJobs(): void
    {
        foreach ($this->currentPromises as $promiseGroup) {
            foreach ($promiseGroup as $promise) {
                if ($promise instanceof CancellablePromiseInterface) {
                    $promise->cancel();
                }
            }
        }
    }
}
__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----OTM4NDQ4NTA1NDY3OTcwMSA4NDI0MDAzNDU2MzQ5MDcyIDExMTMzMDk2OTI5MDYyMDk=