<?php
/*+***********************************************************************************
 * The contents of this file are subject to the vtiger CRM Public License Version 1.0
 * ("License"); You may not use this file except in compliance with the License
 * The Original Code is:  vtiger CRM Open Source
 * The Initial Developer of the Original Code is vtiger.
 * Portions created by vtiger are Copyright (C) vtiger.
 * All Rights Reserved.
 *************************************************************************************/

function fetch_feed_and_transform($url) {
    $reader = \Feed::load($url);
    $return = [];
    $return["channel"] = ["title" => (string)$reader->title, "link" => (string)$reader->link];
    $return["items"] = [];
    foreach ($reader->item as $item) {
        $return["items"][] = $reader->toArray($item);
    }
    return (object) $return;
}

class Rss_Record_Model extends Vtiger_Record_Model {
    
    /**
	 * Function to get the id of the Record
	 * @return <Number> - Report Id
	 */
	public function getId() {
		return $this->get('rssid');
	}

	/**
	 * Function to set the id of the Record
	 * @param <type> $value - id value
	 * @return <Object> - current instance
	 */
	public function setId($value) {
		return $this->set('rssid', $value);
	}

	/**
	 * Fuction to get the Name of the Record
	 * @return <String>
	 */
	function getName() {
		return $this->get('rsstitle');
	}
    
    /**
     * Function to get Rss fetched object
     * @return <object> - Rss Object
     */
    public function getRssObject() { 
        return $this->get('rss');
    }
    
    /**
     * Function to set Rss Object
     * @param <object> $rss - rss fetched object
     */
    public function setRssObject($rss) {
        return $this->set('rss',$rss->items);
    }
    
    /**
     * Function to set Rss values
     * @param <object> $rss - Rss fetched object
     */
    public function setRssValues($rss) {
        $this->set('rsstitle', $rss->channel["title"]);
        $this->set('url', $rss->channel["link"]);
    }

	/**
	 * Function to save the record
	 */
	public function save() {
        $url = $this->get('url');
        
        $db = PearDatabase::getInstance();
        $title = $this->getName();
        $id = $db->getUniqueID("vtiger_rss");
        
        if($title == "") {
            $title = $url;
        }
        
        $params = array($id, $url, $title);
        $sql = "INSERT INTO vtiger_rss (rssid,rssurl,rsstitle) values (?,?,?)";
        $result = $db->pquery($sql, $params);
        
        if($result) {
            $this->setId($id);
            return $id;
        } else {
            return false;
        }
	}
    
    /**
     * Function to delete a record
     */
    public function delete() {
        $db = PearDatabase::getInstance();
        $recordId = $this->getId();
        
        $sql = 'DELETE FROM vtiger_rss where rssid = ?';
        $db->pquery($sql,array($recordId));
    }
    
    /**
     * Function to make a record default for an rss record
     */
    public function makeDefault() {
        $db = PearDatabase::getInstance();
        $recordId = $this->getId();
        
        $sql = 'UPDATE vtiger_rss set starred = 0';
        $db->pquery($sql,array());
        
        $sql = 'UPDATE vtiger_rss set starred = 1 where rssid = ?';
        $db->pquery($sql,array($recordId));
    }

	/**
	 * Function to get record instance by using id and moduleName
	 * @param <Integer> $recordId
	 * @param <String> $qualifiedModuleName
	 * @return <Rss_Record_Model> RecordModel
	 */
	static public function getInstanceById($recordId, $qualifiedModuleName = null) {
		$db = PearDatabase::getInstance();
		$result = $db->pquery('SELECT * FROM vtiger_rss WHERE rssid = ?', array($recordId));

		if ($db->num_rows($result)) {
			$rowData = $db->query_result_rowdata($result, 0);

			$recordModel = new self();
			$recordModel->setData($rowData);
            $recordModel->setModule($qualifiedModuleName);
            $rss = fetch_feed_and_transform(decode_html($recordModel->get('rssurl')));
            $rss->items = $recordModel->setSenderInfo($rss->items);
            $recordModel->setRssValues($rss);
            $recordModel->setRssObject($rss);

			return $recordModel;
		}
        
		return false;
	} 
    
    /**
     * Function to set the sender address to the record
     * @param <array> $rssItems
     * @return <array> $items
     */
    public function setSenderInfo($rssItems) {
        $items = array();
        foreach($rssItems as $item) {
            $item['sender'] = $this->getName();
            $items[] = $item;
        }
        
        return $items;
    }
    
    /**
	 * Function to get clean record instance by using moduleName
	 * @param <String> $qualifiedModuleName
	 * @return <Settings_SMSNotifier_Record_Model>
	 */
	static public function getCleanInstance($qualifiedModuleName) {
		$recordModel = new self();
		return $recordModel->setModule($qualifiedModuleName);
	}
    
    /**
     * Function to validate the rss url
     * @param <string> $url
     * @return <boolean> 
     */
    public function validateRssUrl($url) {
        $rss = fetch_feed_and_transform($url);
	
		if($rss) {
            $this->setRssValues($rss);
			return true;
		} else {
			return false;
		}
    }
    
    /**
     * Function to get the default rss
     */
    public function getDefaultRss() {
        $db = PearDatabase::getInstance();
        
        $result = $db->pquery('SELECT rssid FROM vtiger_rss where starred = 1', array());
        $recordId = $db->query_result($result,'0','rssid');
        if($recordId) {
            $this->setId($recordId);
        } else {
            $result = $db->pquery('SELECT rssid FROM vtiger_rss', array());
            $recordId = $db->query_result($result,'0','rssid');
            $this->setId($recordId);
        }
    }
    
    /**
     * Function to get html contents from feed
     * @param <string> $url
     * @return <string> html contents of url
     */
    public function getHtmlFromUrl($url) {
        $html = file_get_html($url);
        return $html->innertext;
    }
}
