<?php

class Curl
{
    protected static $userAgent = 'Mozilla/5.0 (Linux; Android 6.0.1; SM-G532F Build/MMB29T) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.103 YaBrowser/18.7.1.575.00 Mobile Safari/537.36';
    protected static $arrParams = [
        'error' => false,
        'headers' => false,
        'user_agent' => null,
    ];

    public function __construct ($arrParams = [])
    {
        $this->params = (object) array_merge(self::$arrParams, $arrParams);

        if (empty ($this->params->user_agent)) $this->params->user_agent = self::$userAgent;
    }

    public static function get($url = null, $headers = false, $info = false)
    {
        $response = false;

        if (!empty ($url))
        {

            if (!$this->params->cookie_file)
            {
            $cookieFile = parse_url($url)['host'].'.txt';
            }
            else
            {
                $cookieFile = $this->params->cookie_file;
            }

            $ch = curl_init($url);

            curl_setopt($ch, CURLOPT_COOKIEFILE, $cookieFile);
            curl_setopt($ch, CURLOPT_COOKIEJAR, $cookieFile);

            curl_setopt($ch, CURLOPT_AUTOREFERER, true);
            curl_setopt($ch, CURLOPT_USERAGENT, $this->params->user_agent);
            curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
            curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
            curl_setopt($ch, CURLOPT_ENCODING, "");
            curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
            curl_setopt($ch, CURLOPT_HEADER, $this->params->headers);

            $request = curl_exec($ch);

            if (!$info && !$this->params->error && $request !== false)
            {
                $response = $request;
            }
            elseif ($request === false && $this->params->error)
            {
                $response = [
                    'error' => curl_getinfo($ch),
                    'html' => '<h1 style="color: red;">?????? cURL</h1>'
                ];
            }
            elseif ($info)
            {
                $response = [
                    'html' => $request,
                    'info' => curl_getinfo($ch)
                ];
            }
        }
        return $response;
    }

    public static function post($url = null, $arrData = [], $headers = false, $info = false)
    {
        $response = false;

        if (!empty ($url) && !empty ($arrData))
        {
            if (empty($this->params['cookie_file']))
            {
                $cookieFile = parse_url($url)['host'].'.txt';
            }
            else
            {
                $cookieFile = $this->params->cookie_file;
            }

            $ch = curl_init($url);

            curl_setopt($ch, CURLOPT_POST, 1);
            curl_setopt($ch, CURLOPT_POSTFIELDS, is_array($arrData) ? http_build_query($arrData, '', '&') : $arrData);

            curl_setopt($ch, CURLOPT_COOKIEFILE, $cookieFile);
            curl_setopt($ch, CURLOPT_COOKIEJAR, $cookieFile);

            curl_setopt($ch, CURLOPT_AUTOREFERER, true);
            curl_setopt($ch, CURLOPT_USERAGENT, $this->params->user_agent);
            curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
            curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
            curl_setopt($ch, CURLOPT_ENCODING, "");
            curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
            curl_setopt($ch, CURLOPT_HEADER, $this->params->headers);

            $request = curl_exec($ch);

            if (!$info && !$this->params->error && $request !== false)
            {
                $response = $request;
            }
            elseif ($request === false && $this->params->error)
            {
                $response = [
                    'error' => curl_getinfo($ch),
                    'html' => '<h1 style="color: red;">?????? cURL</h1>'
                ];
            }
            elseif ($info)
            {
                $response = [
                    'html' => $request,
                    'info' => curl_getinfo($ch)
                ];
            }
        }
        return $response;
    }

    public function design($url = null, $html = null)
    {
        $response = false;

        if (!empty($html) && !empty($url))
        {
            $response = preg_replace('/src="(.+)"/', 'src="http://'.parse_url($url)['host'].'$1"', $html);
            $response = preg_replace('/rel="(.+)" href="(.+)"/', 'rel="$1" href="http://'.parse_url($url)['host'].'$2"', $response);
        }
        return $response;
    }

}