<?php
namespace Clumsy\Utils\Library;

use Illuminate\Support\Facades\Config;
use Illuminate\Support\Facades\Queue;
use Illuminate\Support\Facades\Request;

class HTTP
{
    public function async($url)
    {
        $cmd = "curl -X GET '" . $url . "'";
        $cmd .= " > /dev/null 2>&1 &";
        exec($cmd, $output, $exit);
        return $exit == 0;
    }

    public function get($url, $charset = 'UTF-8')
    {
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($ch, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V4);
        curl_setopt($ch, CURLOPT_ENCODING, $charset);
        curl_setopt($ch, CURLOPT_USERAGENT, 'cURL');
        $html = curl_exec($ch);
        $http_status = curl_getinfo($ch, CURLINFO_HTTP_CODE);
        curl_close($ch);

        $response = array(
            'html'      => $html,
            'status'    => $http_status,
        );

        \Illuminate\Support\Facades\Log::info("(GET) URL: $url -- Response: " . print_r($response, true));

        return $response;
    }

    public function getJSON($url, $charset = 'UTF-8')
    {
        $response = $this->get($url, $charset);

        $response['json'] = json_decode($response['html']);

        $response['raw'] = $response['html'];
        unset($response['html']);

        return $response;
    }

    public function getXML($url, $charset = 'UTF-8')
    {
        $response = $this->get($url, $charset);

        $xml = simplexml_load_string($response['html']);
        $xml = json_decode(json_encode($xml), true);
        $response['xml'] = $xml;

        $response['raw'] = $response['html'];
        unset($response['html']);

        return $response;
    }

    public function queueGet($url)
    {
        Queue::push('\Clumsy\Utils\Library\HTTP', array('url' => $url, 'method' => 'get'));
    }

    public function post($url, $data, $charset = 'UTF-8')
    {
        foreach ($data as $key => $value) {
            $data[$key] = rawurlencode($key) . '=' . rawurlencode($value);
        }

        $data = implode('&', preg_replace('/%20/', '+', $data));
        $headers = array(
            'Content-Type: application/x-www-form-urlencoded',
        );

        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($ch, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V4);
        curl_setopt($ch, CURLOPT_ENCODING, $charset);
        curl_setopt($ch, CURLOPT_USERAGENT, 'cURL');
        curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'POST');
        curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
        $html = curl_exec($ch);
        $http_status = curl_getinfo($ch, CURLINFO_HTTP_CODE);
        curl_close($ch);

        $response = array(
            'html'      => $html,
            'status'    => $http_status,
        );

        \Illuminate\Support\Facades\Log::info("(POST) URL: $url -- Response: " . print_r($response, true));

        return $response;
    }

    public function fire($job, $data)
    {
        $method = $data['method'];

        $this->$method($data['url']);

        $job->delete();
    }

    public function buildQuery($query, $allow = array())
    {
        $map = array(
            '@' => '%40',
            '/' => '%2F',
            ':' => '%3A',
        );

        $replace = array_intersect_key($map, array_fill_keys($allow, ''));

        return str_replace(array_values($replace), array_keys($replace), http_build_query($query));
    }

    public function queryStringAdd($url, $key, $value = '')
    {
        $url = preg_replace('/(.*)(\?|&)' . $key . '=[^&]+?(&)(.*)/i', '$1$2$4', $url . '&');
        $url = substr($url, 0, -1);

        $value = $value ? "=".urlencode($value) : '';

        if (strpos($url, '?') === false) {
            return ($url . '?' . $key . $value);
        } else {
            return ($url . '&' . $key . $value);
        }
    }

    public function queryStringRemove($url, $keys)
    {
        foreach ((array)$keys as $key) {
            $parts = parse_url($url);
            $qs = isset($parts['query']) ? $parts['query'] : '';
            $base = $qs ? mb_substr($url, 0, mb_strpos($url, '?')) : $url; // all of URL except QS

            parse_str($qs, $qsParts);
            unset($qsParts[$key]);
            $newQs = rtrim(http_build_query($qsParts), '=');

            if ($newQs) {
                $url = $base.'?'.$newQs;
            } else {
                $url = $base;
            }
        }
        return $url;
    }

    public function isCrawler()
    {
        $crawlers = implode('|', array(
            'facebookexternalhit',
            'XML Sitemaps Generator',
            'Bloglines subscriber',
            'Dumbot',
            'Sosoimagespider',
            'QihooBot',
            'FAST-WebCrawler',
            'Superdownloads Spiderman',
            'LinkWalker',
            'msnbot',
            'ASPSeek',
            'WebAlta Crawler',
            'Lycos',
            'FeedFetcher-Google',
            'Yahoo',
            'YoudaoBot',
            'AdsBot-Google',
            'Googlebot',
            'Scooter',
            'Gigabot',
            'Charlotte',
            'eStyle',
            'AcioRobot',
            'GeonaBot',
            'msnbot-media',
            'Baidu',
            'CocoCrawler',
            'Google',
            'Charlotte t',
            'Yahoo! Slurp China',
            'Sogou web spider',
            'YodaoBot',
            'MSRBOT',
            'AbachoBOT',
            'Sogou head spider',
            'AltaVista',
            'IDBot',
            'Sosospider',
            'Yahoo! Slurp',
            'Java VM',
            'DotBot',
            'LiteFinder',
            'Yeti',
            'Rambler',
            'Scrubby',
            'Baiduspider',
            'accoona',
        ));

        return preg_match("/$crawlers/i", Request::header('user-agent'));
    }
}