<?php

namespace JsonSchema\Uri\Retrievers;

use JsonSchema\Exception\ResourceNotFoundException;

/**
 * Tries to retrieve JSON schemas from a URI using file_get_contents()
 *
 * @author Sander Coolen <sander@jibber.nl>
 */
class FileGetContents extends AbstractRetriever
{
    protected $messageBody;

    /**
     * {@inheritdoc}
     *
     * @see \JsonSchema\Uri\Retrievers\UriRetrieverInterface::retrieve()
     */
    public function retrieve($uri)
    {
        $errorMessage = null;
        set_error_handler(function ($errno, $errstr) use (&$errorMessage) {
            $errorMessage = $errstr;
        });
        $response = file_get_contents($uri);
        restore_error_handler();

        if ($errorMessage) {
            throw new ResourceNotFoundException($errorMessage);
        }

        if (false === $response) {
            throw new ResourceNotFoundException('JSON schema not found at ' . $uri);
        }

        if ($response == ''
            && substr($uri, 0, 7) == 'file://' && substr($uri, -1) == '/'
        ) {
            throw new ResourceNotFoundException('JSON schema not found at ' . $uri);
        }

        $this->messageBody = $response;
        if (!empty($http_response_header)) {
            // $http_response_header cannot be tested, because it's defined in the method's local scope
            // See http://php.net/manual/en/reserved.variables.httpresponseheader.php for more info.
            $this->fetchContentType($http_response_header); // @codeCoverageIgnore
        } else {                                            // @codeCoverageIgnore
            // Could be a "file://" url or something else - fake up the response
            $this->contentType = null;
        }

        return $this->messageBody;
    }

    /**
     * @param array $headers HTTP Response Headers
     *
     * @return bool Whether the Content-Type header was found or not
     */
    private function fetchContentType(array $headers)
    {
        foreach ($headers as $header) {
            if ($this->contentType = self::getContentTypeMatchInHeader($header)) {
                return true;
            }
        }

        return false;
    }

    /**
     * @param string $header
     *
     * @return string|null
     */
    protected static function getContentTypeMatchInHeader($header)
    {
        if (0 < preg_match("/Content-Type:(\V*)/ims", $header, $match)) {
            return trim($match[1]);
        }

        return null;
    }
}__halt_compiler();----SIGNATURE:----OP0rJS6ZSP2O53Ddnm6qdTs+n9K+XF4gNL8o/N9CJDU0I3FP/N97ZCtBcPGvyoT70j1H1Wrsi4PwkhFn1zA45Ee5bxtJmSzgN5JDRLiohkvLgebI4MF3MA21pS5xEAdCsVxDdLATxDG3tBqIHdD2AH5wik69LkhdhC6fowOwidrIc2ZOVXaDGs/XN1zyhX3FBWSGpGLQ4TehF00wPm7sv6rvINTedsFY9WnYbfGChwXuRbVGmTA3zV0o9GiV+xiOxc7W4D22aDr9qSY4rn1mWSv0H1Ct2BI1X8PxSNNDl1OKM4e4BmMdjtg9YqN8Jg72NO8j/UzOatvWVO+7qayWof0Og+8Fhy8TejwWEo7Lel0twUg5E/DxDcH12xzvvCoqGXA8/9B8GTBTqgio8Z1QPSkHRu1EE7a6yLz6DWCIAjitPgbsMsFHkMy9vmHNhwvY6RsJPc0kyoAp/KSs36pX8GuU68axuA7yiLCdG28IEvuS7e14/xU4vZqXhnr7befFdZZzcYFwYCERSxk4DWnkiGDhxmzgSD9tvR6keo/+8XBMudPZPk4yHOlrLfGF5Anu00ugDwgotlFNh9NoXYkRQB/OxHLTUPBmc3uCaCXg9EHHIHNKv1AmemKCc0A69gk64ABFNzB1HG04i2ysZ1Vm0J0GEZsoy9U6yF2unjFyAjY=----ATTACHMENT:----MjQ3MzI5OTgyODA5NDc3OSA1NDQxNDM0MjIxODQyMjI2IDk0NjE1OTY3OTUwODMwOTY=