<?php
/*------------------------------------------------------------------------------
  $Id$

  AbanteCart, Ideal OpenSource Ecommerce Solution
  http://www.AbanteCart.com

  Copyright © 2011-2014 Belavier Commerce LLC

  This source file is subject to Open Software License (OSL 3.0)
  License details is bundled with this package in the file LICENSE.txt.
  It is also available at this URL:
  <http://www.opensource.org/licenses/OSL-3.0>

 UPGRADE NOTE:
   Do not edit or add to this file if you wish to upgrade AbanteCart to newer
   versions in the future. If you wish to customize AbanteCart for your
   needs please refer to http://www.AbanteCart.com for more information.
------------------------------------------------------------------------------*/
if (!defined('DIR_CORE')) {
	header('Location: static_pages/');
}

/**
 * Class AMessage
 */
final class AMessage {
	/**
	 * @var ADB
	 */
	private $db;
	/**
	 * @var ASession
	 */
	private $session;
	/**
	 * @var AHtml
	 */
	private $html;
	/**
	 * @var Registry
	 */
	private $registry;

	/**
	 *
	 */
	public function __construct() {
		$this->registry = Registry::getInstance();
		$this->db = $this->registry->get('db');
		$this->html = $this->registry->get('html');
		$this->session = $this->registry->get('session');
	}

	/**
	 * save notice
	 *
	 * @param  $title - string - message title
	 * @param  $message - string - message body
	 * @param bool $repetition_group - sign to group repetitions of message based on same title of message
	 * @void
	 */
	public function saveNotice($title, $message, $repetition_group = true) {
		$this->_saveMessage($title, $message, 'N', $repetition_group);
	}

	/**
	 * save warning
	 *
	 * @param  $title - string - message title
	 * @param  $message - string - message body
	 * @param bool $repetition_group - sign to group repetitions of message based on same title of message
	 * @void
	 */
	public function saveWarning($title, $message, $repetition_group = true) {
		$this->_saveMessage($title, $message, 'W', $repetition_group);
	}

	/**
	 * save Error
	 *
	 * @param  $title - string - message title
	 * @param  $message - string - message body
	 * @param bool $repetition_group - sign to group repetitions of message based on same title of message
	 * @void
	 */
	public function saveError($title, $message, $repetition_group = true) {
		$this->_saveMessage($title, $message, 'E', $repetition_group);
	}

	/**
	 * save notice
	 *
	 * @param  $title - string - message title
	 * @param  $message - string - message body
	 * @param  $status - message status ( N - notice, W - warning, E - error )
	 * @param bool $repetition_group - sign to group repetitions of message based on same title of message
	 * @void
	 */
	private function _saveMessage($title, $message, $status, $repetition_group = true) {
		$last_message = $this->getLikeMessage($title);
		// if last message equal new - update it's repeated field
		if ($last_message['title'] == $title && $repetition_group) {
			$this->db->query("UPDATE " . $this->db->table("messages") . " SET `repeated` = `repeated` + 1, viewed='0' WHERE msg_id = '" . $last_message['msg_id'] . "'");
		} else {

			$this->db->query("INSERT INTO " . $this->db->table("messages") . " 
						    SET `title` = '" . $this->db->escape($title) . "',
						    `message` = '" . $this->db->escape($message) . "',
						    `status` = '" . $this->db->escape($status) . "',						    
						    `date_added` = NOW()");
		}
	}

	/**
	 * @param int $msg_id
	 */
	public function deleteMessage($msg_id) {
		$this->db->query("DELETE FROM " . $this->db->table("messages") . " WHERE `msg_id` = " . (int)$msg_id);
	}

	/**
	 * @param int $msg_id
	 * @return array
	 */
	public function getMessage($msg_id) {
		$this->markAsRead($msg_id);
		$query = $this->db->query("SELECT * FROM " . $this->db->table("messages") . " WHERE msg_id = " . (int)$msg_id);
		$row = $query->row;
		if ($row) {
			// replace html-links in message
			$row['message'] = $this->html->convertLinks($row['message'], 'message');
		}
		return $row;
	}

	/**
	 * @param int $start
	 * @param int $limit
	 * @param string $sort
	 * @param string $order
	 * @return array
	 */
	public function getMessages($start = 0, $limit = 0, $sort = '', $order = 'DESC') {
		$sort = !$sort ? 'viewed' : $this->db->escape($sort);
		$limit_str = '';
		if ($limit > 0) {
			$limit_str = "LIMIT " . (int)$start . ", " . (int)$limit;
		}
		$sql = "SELECT * FROM " . $this->db->table("messages") . " ORDER BY " . $sort . " " . $order . ", date_modified DESC, msg_id DESC " . $limit_str;
		$query = $this->db->query($sql);
		return $query->rows;
	}

	/**
	 * @param string $title
	 * @return array
	 */
	public function getLikeMessage($title) {
		$query = $this->db->query("SELECT * FROM " . $this->db->table("messages") . " WHERE title='" . $this->db->escape($title) . "'");
		return $query->row;
	}

	/**
	 * @return int
	 */
	public function getTotalMessages() {
		$query = $this->db->query("SELECT COUNT(*) AS total FROM " . $this->db->table("messages") . " ");
		return (int)$query->row['total'];
	}

	/**
	 * @param int $msg_id
	 * @return bool
	 */
	public function markAsRead($msg_id) {
		$this->db->query("UPDATE " . $this->db->table("messages") . " SET viewed = viewed + 1 WHERE `msg_id` = '" . $this->db->escape($msg_id) . "'");
		return true;
	}

	/**
	 * @param int $msg_id
	 * @return bool
	 */
	public function markAsUnRead($msg_id) {
		$msg_info = $this->getMessage($msg_id);
		if ($msg_info['viewed']) {
			$this->db->query("UPDATE " . $this->db->table("messages") . " SET viewed = 0 WHERE `msg_id` = '" . $this->db->escape($msg_id) . "'");
			return true;
		} else {
			return false;
		}
	}

	/**
	 * @param string $title
	 * @param string $message
	 * @param string $status
	 */
	public function saveForDisplay($title, $message, $status) {
		$this->session->data['ac_messages'][] = array($title, $message, $status);
	}

	/**
	 * @return array
	 */
	public function getForDisplay() {
		$messages = array();
		if (!empty($this->session->data['ac_messages'])) {
			$messages = $this->session->data['ac_messages'];
			unset($this->session->data['ac_messages']);
		}
		return $messages;
	}

	/**
	 * @param array $no_delete
	 * @return bool
	 */
	public function purgeANTMessages($no_delete = array()) {
		if (!$no_delete || !is_array($no_delete)) return false;
		$ids = array();
		foreach ($no_delete as $id) {
			$ids[] = $this->db->escape($id);
		}
		$ids = "'" . implode("', '", $ids) . "'";
		$sql = "DELETE FROM " . $this->db->table("ant_messages") . " WHERE id NOT IN (" . $ids . ")";
		$this->db->query($sql);
		return true;
	}

	/**
	 * @param array $data
	 */
	public function saveANTMessage($data = array()) {
		if (!$data || !$data['message_id']) {
			return null;
		}

		// need to find message with same id and language. If language not set - find for all
		// if lanuguage_code is empty it mean that banner shows for all insterface languages
		$sql = "SELECT *
		         FROM " . $this->db->table("ant_messages") . " 
		         WHERE id = '" . $this->db->escape($data['message_id']) . "'
		         " . ($data['language_code'] ? "AND language_code = '" . $this->db->escape($data['language_code']) . "'" : "") . "
		         ORDER BY viewed_date ASC";
		$result = $this->db->query($sql);

		$exists = array();
		$viewed = 0;
		if ($result->num_rows) {
			foreach ($result->rows as $row) {
				$exists[] = "'" . $row['id'] . "'";
				$viewed += $row['viewed'];
				$last_view = $row['viewed_date'];
			}
			$this->db->query("DELETE FROM " . $this->db->table("ant_messages") . " WHERE id IN (" . implode(",", $exists) . ")");
		}
		$data['end_date'] = !$data['end_date'] || $data['end_date'] == '0000-00-00 00:00:00' ? '2030-01-01' : $data['end_date'];
		$data['priority'] = !(int)$data['priority'] ? 1 : (int)$data['priority'];
		$sql = "INSERT INTO " . $this->db->table("ant_messages") . " (`id`,
															`priority`,
															`start_date`,
															`end_date`,
															`viewed_date`,
															`viewed`,
															`title`,
															`description`,
															`html`,
															`url`,
															`language_code`)
				VALUES ('" . $this->db->escape($data['message_id']) . "',
						'" . $this->db->escape($data['priority']) . "',
						'" . $this->db->escape($data['start_date']) . "',
						'" . $this->db->escape($data['end_date']) . "',
						'" . $last_view . "',
						'" . $viewed . "',
						'" . $this->db->escape($data['title']) . "',
						'" . $this->db->escape($data['description']) . "',
						'" . $this->db->escape($data['html']) . "',
						'" . $this->db->escape($data['url']) . "',
						'" . $this->db->escape($data['language_code']) . "')";
		$this->db->query($sql);
	}

	/**
	 * @return string
	 */
	public function getANTMessage() {

		// delete expired banners first
		$this->db->query("DELETE FROM " . $this->db->table("ant_messages") . " 
		                   WHERE end_date < CURRENT_TIMESTAMP");

		$sql = "SELECT *
		         FROM " . $this->db->table("ant_messages") . " 
		         WHERE start_date< CURRENT_TIMESTAMP and end_date > CURRENT_TIMESTAMP
		            AND ( language_code = '" . $this->registry->get('config')->get('admin_language') . "'
		                      OR COALESCE(language_code,'*') = '*' OR language_code = '*' )
		         ORDER BY viewed_date ASC, priority DESC, COALESCE(language_code,'') DESC, COALESCE(url,'') DESC";

		$result = $this->db->query($sql);
		if ($result->num_rows) {
			$output = $result->row['html'] ? $result->row['html'] : $result->row['description'];
			//$this->markViewedANT($result->row['id'],$result->row['language_code']);
		}
		return array('id' => $result->row['id'], 'viewed' => $result->row['viewed'], 'html' => $output);
	}

	/**
	 * @return string
	 */
	public function markViewedANT($message_id, $language_code) {
		if (!has_value($message_id) || !has_value($language_code)) {
			return null;
		}
		$sql = "UPDATE  " . $this->db->table("ant_messages") . " 
				SET viewed = viewed+1 , viewed_date = NOW() 
				WHERE id = '" . $this->db->escape($message_id) . "'
					AND language_code = '" . $this->db->escape($language_code) . "'";
		$this->db->query($sql);
		return $message_id;
	}

	/**
	 * @return array
	 */
	public function getShortList() {

		$output = array();
		$result = $this->db->query("SELECT UPPER(status) as status, COUNT(msg_id) as count
									FROM " . $this->db->table("messages") . " 
									WHERE viewed<'1'
									GROUP BY status");
		foreach ($result->rows as $row) {
			$output['count'][$row['status']] = ( int )$row['count'];
			$total += ( int )$row['count'];
		}

		$output['total'] = $total;

		//let last couple of messages for each type
		$result = $this->db->query(
				"(SELECT msg_id, title, message, status, viewed, date_modified
				FROM " . $this->db->table('messages') . "
					WHERE UPPER(status)='E'
					ORDER BY date_modified DESC
					LIMIT 0,3)
				UNION
					(SELECT msg_id, title, message, status, viewed, date_modified
					FROM " . $this->db->table('messages') . "
					WHERE UPPER(status)='W'
					ORDER BY date_modified DESC
					LIMIT 0,3)
				UNION
					(SELECT msg_id, title, message, status, viewed, date_modified
					FROM " . $this->db->table('messages') . "
					WHERE UPPER(status)='N'
					ORDER BY date_modified DESC
					LIMIT 0,3)");
		$output['shortlist'] = $result->rows;

		return $output;
	}

}