<?php
/**
 * Created by PhpStorm.
 * User: bathan
 * Date: 4/11/16
 * Time: 3:32 PM
 *
 * FTP
 * v1f9wS)4^fGa9)g
 * marketrealist@totisoft.com.ar
 *
 */

class MR_Feed_Monitor
{

    private $_notify_email_address = 'miguel@marketrealist.com';
    private $_send_email = false;

    /**
     * Feeds class instance property
     *
     * @var array
     */
    var $feeds = array();

    /**
     * Default feeds
     *
     * @var array
     */
    private $_default_feeds = [
        'yahoo-finance' => [
            'url'=>'http://marketrealist.com/feed-yahoo-finance/', //-- Very Important to have slashes both at beggining and end
            'username'=>'yahoofinancefeed',
            'password'=>'ED7XaJBiy4HKPMKQqKFPWfW'
        ]
    ];

    /**
     * @param array $feeds
     */
    public function __construct( $feeds = array() )
    {
        if(empty($feeds)) {
            $feeds = $this->_default_feeds;
        }
        $this->feeds = $feeds;
    }

    public function set_notify_email($e) {
        $this->_notify_email_address = $e;
    }
    public function set_send_emails($s) {
        $this->_send_email = $s;
    }

    /**
     * Set class instance feeds
     *
     * @param $feeds
     */
    public function set_feeds( $feeds )
    {
        $this->feeds = $feeds;
    }

    /**
     *
     * Runs the Checks for the feeds
     */
    public function run_check()
    {
        foreach ($this->feeds as $feed_name=>$feed) {
            $feed_url = $feed['url'];
            $feed_username = $feed['username'];
            $feed_password = $feed['password'];

            $feed_contents = $this->get_feed_contents($feed_url,$feed_username,$feed_password);

            libxml_use_internal_errors(true);

            $doc = simplexml_load_string($feed_contents);

            $error_array = [];
            if (!$doc) {
                $errors = libxml_get_errors();

                foreach ($errors as $error) {
                    $error_array[] = json_encode($error,JSON_PRETTY_PRINT);
                }

                libxml_clear_errors();

                //-- Ok Something is wrong, we need to send an email notification.
                if($this->_send_email) {
                    $this->send_alert_email($this->_notify_email_address,$feed_name,$feed_url, $error_array);
                }
            }
        }

    }

    public function get_feed_contents($feedUrl,$feed_username,$feed_password)
    {

        $feed_content = null;

        try {
            $process = curl_init($feedUrl);

            curl_setopt($process, CURLOPT_HTTPHEADER, array('Content-Type: application/xml'));
            //curl_setopt($process, CURLOPT_HEADER, 1);
            curl_setopt($process, CURLOPT_USERPWD, $feed_username . ":" . $feed_password);
            curl_setopt($process, CURLOPT_TIMEOUT, 300);
            curl_setopt($process, CURLOPT_RETURNTRANSFER, TRUE);
            $feed_content = curl_exec($process);

        } catch (Exception $e) {
            throw $e;
        }

        return $feed_content;
    }

    private function send_alert_email($email,$feed_name,$feed_url,$errors) {

        $subject = $feed_name.' feed in trouble';
        $body = "<h2> Problem with ".$feed_name."</h2><h3>$feed_url</h3><pre>".print_r($errors,true)."</pre>";

        $headers  = "From: MR Feeds Monitor <mrfm@marketrealist.com>\r\n";
        $headers .= "X-Mailer: TotiEmailer\n";
        $headers .= 'MIME-Version: 1.0' . "\n";
        $headers .= 'Content-type: text/html; charset=iso-8859-1' . "\r\n";

        $email_sent = mail($email,$subject, $body, $headers);

        echo $body ;

        return $email_sent;
    }
}

$send_emails = isset($_GET['send_email']);

$x = new MR_Feed_Monitor();

$x->set_send_emails($send_emails);

if(isset($_GET['notify_email_address'])) {
    $x->set_notify_email($_GET['notify_email_address']);
}

$get_parameters = ['feed_name','feed_url','feed_username','feed_password'];

$use_get_params = true;
foreach($get_parameters as $param) {
    if(!isset($_GET[$param])) {
        $use_get_params = false;
    }
}

if($use_get_params) {
    $feed_name = $_GET['feed_name'];
    $feed_url = $_GET['feed_url'];
    $feed_username = $_GET['feed_username'];
    $feed_password = $_GET['feed_password'];

    $default_feeds = [
        $feed_name => [
            'url'=>$feed_url, //-- Very Important to have slashes both at beggining and end
            'username'=>$feed_username,
            'password'=>$feed_password
        ]
    ];

    $x->set_feeds($default_feeds);
}


$x->run_check();