<?php

namespace CodeJetter\core\utility;

/**
 * Class HTTPUtility.
 */
class HTTPUtility
{
    /**
     * Check to see if the url exists
     * Example: checkURL('www.YOUR_DOMAIN.com', array('timeout' => 5)).
     *
     * @param  $url
     * @param array $options
     *
     * @throws \Exception
     *
     * @return array|bool
     */
    public static function checkURL($url, array $options = [])
    {
        if (empty($url)) {
            throw new \Exception('URL is empty');
        }

        // list of HTTP status codes
        $httpStatusCodes = [
            100 => 'Continue',
            101 => 'Switching Protocols',
            102 => 'Processing',
            200 => 'OK',
            201 => 'Created',
            202 => 'Accepted',
            203 => 'Non-Authoritative Information',
            204 => 'No Content',
            205 => 'Reset Content',
            206 => 'Partial Content',
            207 => 'Multi-Status',
            208 => 'Already Reported',
            226 => 'IM Used',
            300 => 'Multiple Choices',
            301 => 'Moved Permanently',
            302 => 'Found',
            303 => 'See Other',
            304 => 'Not Modified',
            305 => 'Use Proxy',
            306 => 'Switch Proxy',
            307 => 'Temporary Redirect',
            308 => 'Permanent Redirect',
            400 => 'Bad Request',
            401 => 'Unauthorized',
            402 => 'Payment Required',
            403 => 'Forbidden',
            404 => 'Not Found',
            405 => 'Method Not Allowed',
            406 => 'Not Acceptable',
            407 => 'Proxy Authentication Required',
            408 => 'Request Timeout',
            409 => 'Conflict',
            410 => 'Gone',
            411 => 'Length Required',
            412 => 'Precondition Failed',
            413 => 'Payload Too Large',
            414 => 'Request-URI Too Long',
            415 => 'Unsupported Media Type',
            416 => 'Requested Range Not Satisfiable',
            417 => 'Expectation Failed',
            418 => 'I\'m a teapot',
            422 => 'Unprocessable Entity',
            423 => 'Locked',
            424 => 'Failed Dependency',
            425 => 'Unordered Collection',
            426 => 'Upgrade Required',
            428 => 'Precondition Required',
            429 => 'Too Many Requests',
            431 => 'Request Header Fields Too Large',
            449 => 'Retry With',
            450 => 'Blocked by Windows Parental Controls',
            500 => 'Internal Server Error',
            501 => 'Not Implemented',
            502 => 'Bad Gateway',
            503 => 'Service Unavailable',
            504 => 'Gateway Timeout',
            505 => 'HTTP Version Not Supported',
            506 => 'Variant Also Negotiates',
            507 => 'Insufficient Storage',
            508 => 'Loop Detected',
            509 => 'Bandwidth Limit Exceeded',
            510 => 'Not Extended',
            511 => 'Network Authentication Required',
            599 => 'Network Connect Timeout Error',
        ];

        $ch = curl_init($url);
        curl_setopt($ch, CURLOPT_NOBODY, true);
        curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);

        if (isset($options['timeout'])) {
            $timeout = (int) $options['timeout'];
            curl_setopt($ch, CURLOPT_TIMEOUT, $timeout);
        }

        curl_exec($ch);
        $returnedStatusCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
        curl_close($ch);

        if (array_key_exists($returnedStatusCode, $httpStatusCodes)) {
            return [
                'code'       => $returnedStatusCode,
                'definition' => $httpStatusCodes[$returnedStatusCode],
            ];
        } else {
            return false;
        }
    }
}
