<?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:----ODU5MTc4ODY3MzE5ODU4MCA1OTU2OTI5NzM0NTkzOTE3IDEzMTM0MjM3MzUwNTU2MjM=