<?php

/**
 * @copyright (C) 2013 iJoomla, Inc. - All rights reserved.
 * @license GNU General Public License, version 2 (http://www.gnu.org/licenses/gpl-2.0.html)
 * @author iJoomla.com <webmaster@ijoomla.com>
 * @url https://www.jomsocial.com/license-agreement
 * The PHP code portions are distributed under the GPL license. If not otherwise stated, all images, manuals, cascading style sheets, and included JavaScript *are NOT GPL, and are released under the IJOOMLA Proprietary Use License v1.0
 * More info at https://www.jomsocial.com/license-agreement
 */

use Joomla\CMS\Factory;
use Joomla\CMS\Table\Table;

defined('_JEXEC') or die('Restricted access');

jimport('joomla.application.component.model');
require_once( JPATH_ROOT . '/components/com_community/models/models.php' );

class CommunityModelBlock extends JCCModel {

    /**
     * Check for valid user ids to do block
     * @param type $userId
     * @param type $blockUserId
     * @return boolean
     */
    private function _isValidBlocking($userId, $blockUserId) {
        /* Guest have no permission to block anyone and can't block guest to */
        if ($userId == 0 || $blockUserId == 0) {
            return false;
        }
        /* You can block yourself */
        if ($userId == $blockUserId) {
            return false;
        }
        return true;
    }

    /**
     * Check blocking status between $userId & $blockUserId
     * @param type $userId
     * @param type $blockUserId
     * @param type $type
     * @return object|boolean
     */
    public function getBlockStatus($userId, $blockUserId, $type = false) {
        if (!$this->_isValidBlocking($userId, $blockUserId))
            return false;

        $table = Table::getInstance('Blocklist', 'CTable');
        if ($table) {
            if($type){
                //return the type of block
                $table->load(array('userid' => $userId,
                    'blocked_userid' => $blockUserId,
                        'type'=>$type)
                );
                if($table->id){
                    return $table;
                }else{
                    return false;
                }
            }
            return $table->getBlocked($userId, $blockUserId);
        }
        return false;
    }

    /**
     * Do block user
     * @param type $myId
     * @param type $userId
     * @param type $type
     * @return boolean
     */
    public function blockUser($userId, $blockUserId, $type = 'block') {

        if ($this->_isValidBlocking($userId, $blockUserId)) {
            $table = Table::getInstance('Blocklist', 'CTable');
            $table->load(array('userid'=>$userId, 'blocked_userid'=>$blockUserId));
            $table->userid = $userId;
            $table->blocked_userid = $blockUserId;
            $table->type = $type;
            return $table->store();
        }

        return false;
    }

    /**
     *
     * @param type $myId
     * @param type $userId
     * @return boolean
     */
    public function removeBlockedUser($myId, $userId) {
        $db = $this->getDBO();

        $query = 'DELETE FROM ' . $db->quoteName('#__community_blocklist')
                . ' WHERE ' . $db->quoteName('blocked_userid') . '=' . $db->Quote($userId)
                . ' AND ' . $db->quoteName('userid') . '=' . $db->Quote($myId);

        $db->setQuery($query);

        try {
            $db->execute();
        } catch (Exception $e) {
            Factory::getApplication()->enqueueMessage($e->getMessage(), 'error');
        }

        return true;
    }

    /**
     * Get blocked users
     * @param type $myId
     * @param type $type
     * @return array
     */
    public function getBlockedList($myId, $type = null) {
        static $list = array();
        $id = md5(json_encode(func_get_args()));
        /* We do not re-query for same request */
        if (!isset($list[$id])) {
            $db = $this->getDBO();

            $query = "SELECT m.*,n.".$db->quoteName('name')." FROM ".$db->quoteName('#__community_blocklist')." m "
                    . "LEFT JOIN ".$db->quoteName('#__users')." n ON m.".$db->quoteName('blocked_userid')."=n.".$db->quoteName('id')." "
                    . "WHERE m.".$db->quoteName('userid')."=" . $db->Quote($myId) . " "
                    . "AND m.".$db->quoteName('blocked_userid')."!=0";
            /* Get blocked by type */
            if ($type !== null)
                $query .= " AND m.".$db->quoteName('type')." = " . $db->quote($type);

            $db->setQuery($query);
            $list[$id] = $db->loadObjectList();
        }

        return $list[$id];
    }

}