<?php
// PHPDOM -
// post - http://stackoverflow.com/questions/28395/passing-post-values-with-curl
// OCR  - https://github.com/thiagoalessio/tesseract-ocr-for-php
require_once './vendor/autoload.php';

use PHPHtmlParser\Dom;

class AlphabayBot {
    public $website_url = '';
    public $proxy_port = '9050';
    public $proxy_address = '127.0.0.1';

    // contain curl connection
    private $ch = null;
    // contain DOM class
    private $dom = null;
    // contain page out put (HTML)
    private $page_output;
    // users txt file
    private $users;

    function __construct($website_url, $proxy_port, $proxy_address) {
        // set wensite url
        $this->website_url = $website_url;
        // set proxy port
        $this->proxy_port = $proxy_port;
        // set proxy address
        $this->proxy_address = $proxy_address;

        // create new curl instance
        $this->ch = curl_init();
        // new Dom instance
        $this->dom = new Dom;
        // set page output as null
        $this->page_output = null;
        // load users txt file (contain all registered users)
        $this->users = 'users.txt';
    }

    function set_random_user_agent() {
        $agents = array(
        'Mozilla/5.0 (Macintosh; Intel Mac OS X 10.7; rv:7.0.1) Gecko/20100101 Firefox/7.0.1',
        'Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.9) Gecko/20100508 SeaMonkey/2.0.4',
        'Mozilla/5.0 (Windows; U; MSIE 7.0; Windows NT 6.0; en-US)',
        'Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_7; da-dk) AppleWebKit/533.21.1 (KHTML, like Gecko) Version/5.0.5 Safari/533.21.1'
        );
        curl_setopt($this->ch,CURLOPT_USERAGENT,$agents[array_rand($agents)]);
    }

    function get_login_page_content() {
        // taken from here - http://stackoverflow.com/questions/23155543/sending-post-get-with-php-to-tor
        curl_setopt ($this->ch, CURLOPT_URL, $this->website_url);
        curl_setopt ($this->ch, CURLOPT_HEADER, 0);
        curl_setopt ($this->ch, CURLOPT_PROXYTYPE, 7 );

        curl_setopt ($this->ch, CURLOPT_PROXY,
            $this->proxy_address.':'.$this->proxy_port );

        curl_setopt($this->ch, CURLOPT_FOLLOWLOCATION, TRUE);
        ob_start();
        curl_exec ($this->ch);
        $result = ob_get_contents();
        ob_end_clean();
        $this->page_output = $result;
        // load html content to DOM class.
        $this->dom->load($this->page_output);
    }

    function decoding_captcha() {
        // captcha full url
        $get_captcha_img = $this->dom->find('#captcha')['0'];

        // if captcha exists for alpha home page login
        if( !empty($get_captcha_img) ) {
            // get captcha image url
            $captcha_full_url = $this->website_url . $get_captcha_img->src;
            // save image to server
            // save file with curl - http://stackoverflow.com/questions/724391/saving-image-from-php-url
            // create image temporary name with time()
            $image_tmp_name = time() . '.png';
            // create temp image file
            $fp = fopen('./tmp/' . $image_tmp_name, 'wb');
            curl_setopt($this->ch, CURLOPT_TIMEOUT, 50);
            // write curl response to file
            curl_setopt ($this->ch, CURLOPT_URL, $captcha_full_url);
            curl_setopt($this->ch, CURLOPT_FILE, $fp);
            fclose($fp);
        }

        curl_setopt($this->ch, CURLOPT_FOLLOWLOCATION, true);
        // get curl response
        curl_exec($this->ch);
    }

    /*
     * post_login_credentials - send uer and password credentials and login forum
     */
    function post_login_credentials() {
        // get inputs by id
        $login_email = $this->dom->find('#ctrl_pageLogin_login')['0'];
        $login_password = $this->dom->find('#ctrl_pageLogin_password')['0'];

        if( ! empty($login_email) || ! empty($login_password) ) {
            echo "\n\n";
            echo 'found input names: ' . "\n\n";
            echo $login_email->name . "\n\n";
            echo $login_password->name . "\n\n";

            $user = $this->return_registered_user();
            echo "\n\n";
            echo 'this user selected: ' . $user['login'] . "\n";
            echo 'this password selected: ' . $user['password'] . "\n";

            $this->make_login(
                $login_email->name,
                $login_password->name,
                $user['login'],
                $user['password']
            );

            curl_setopt($this->ch, CURLOPT_FOLLOWLOCATION, true);
            $url_redirect = curl_getinfo($this->ch , CURLINFO_EFFECTIVE_URL);
            echo "\n\n";
            echo 'url after redirect:';
            echo "\n";
            print_r( $this->bot_debug() );
            return true;
        }
        else {
            echo 'login user/email and password inputs not found.';
            return false;
        }

    }

    function bot_debug() {
        curl_setopt($this->ch, CURLINFO_HEADER_OUT, true);
        return curl_getinfo($this->ch);
    }

    function make_login($login_input, $password_input,$login, $password) {
        $data = array(
            $login_input    => $login,
            $password_input => $password
        );

        curl_setopt($this->ch, CURLOPT_POST, true);
        curl_setopt($this->ch, CURLOPT_POSTFIELDS, $data);
        print_r( $this->bot_debug() );
        curl_setopt($this->ch, CURLOPT_FOLLOWLOCATION, true);
        // check where do i redirect
        echo 'logged in with this user and password:' . "\n";
        echo 'user: ' . $login . "\n";
        echo 'password: ' . $password . "\n";
        echo "\n\n\n";
        echo '--- url redirection to login ---';
        echo "\n\n\n";
        $url_redirect = curl_getinfo($this->ch , CURLINFO_EFFECTIVE_URL);
        ob_start();
        curl_exec($this->ch);
        ob_get_contents();
        ob_end_clean();
        echo "\n";
        echo 'url redirect: ';
        echo "\n";
        print_r($url_redirect);
        echo "\n";
    }

    function return_registered_user($user_number=null) {
        $lines_num = count( file( $this->users ) ) - 1;
        // if ! $user_number then select user from file randomly
        $users_file = file( $this->users );
        if( ! $user_number ) {
            $line = $users_file[rand(0, $lines_num - 1)];
        }
        else {
            // select by $user_number
            $line = $users_file[$user_number];
        }
        // explode user and password from the line
        $user = explode("   ", $line);
        // load user from users.txt
        return array(
            'login' => $user[0],
            'password' => $user[1]
        );
    }

    // return array of new users
    function find_new_users() {

    }

    function send_private_message($msg, $user) {

    }

    function close() {
        curl_close($this->ch);
    }
}

echo '<pre>';
// PROXY AND
$proxy_address = "127.0.0.1";
$proxy_port = "9050";
// AlphaBay login url
$website_url = "https://xenforo.com/community/";

$a_bot = new AlphabayBot($website_url, $proxy_port, $proxy_address);
// set random user agent
$a_bot->set_random_user_agent();
// get captcha url
$a_bot->get_login_page_content();

// decoding captcha
// $a_bot->decoding_captcha(); - not necessary now

// login with user and password
$a_bot->post_login_credentials();
// close curl connection
$a_bot->close();
echo "\n";
echo '</pre>';