<?php

namespace BRSystems\Core\Cms\cmsMailEngine\inc;

use BRSystems\Core\Library\cDb\cDb;
use BRSystems\Core\Library\cDbLog\cDbLog;

/**
 * cmsMailEngine Module
 *
 * @category cmsMailEngine Module
 * @author Mareks Keišs <mareks.keiss@brsystems.lv>
 * @since Version 2.0
 */
class cmsMailEngineModule
{
    public $db;
    public $table;

    const CRON_TIMER_INTERVAL = 2;

    /**
     * Class constructor
     */
    public function __construct() {

        $this->db = cDb::getInstance();

    }

    /**
     * Function to get module records
     *
     * @author Mareks Keišs <mareks.keiss@brsystems.lv>
     * @category cmsMailEngine Module
     * @param string $where - sql query
     * @param string $sort - sql query
     * @param int $offset - db table offset
     * @param int $limitPerPage - limit per page
     * @return array of data
     * @version 1.1
     */
    public function getModuleRecords($where, $sort, $offset = 0, $limitPerPage = 20){

        $sSql = "
                SELECT SQL_CALC_FOUND_ROWS
                    mm.*,
                    mc.cl_name
                FROM
                    {$this->table} mm
                    LEFT JOIN mod_mail_constructor mcc ON
                        mcc.id = mm.mail_template_id
                    LEFT JOIN mod_classificators mc ON
                        mc.id = mcc.mail_type
                WHERE
                    1 {$where}
                ORDER BY
                    {$sort}
                LIMIT
                    {$offset}, {$limitPerPage}
             ";

        $this->db->query($sSql);
        return $this->db->getArray();
    }


    /**
     * Function to get module records for plugin
     *
     * @author Mareks Keišs <mareks.keiss@brsystems.lv>
     * @category cmsMailEngine Module
     * @return array of data
     * @version 1.1
     */
    public function getPluginRecords(){

        $sSql = "
                SELECT
                    mm.id,
                    mm.mail_owner,
                    mm.mail_title
                FROM
                    mod_mail_outgoing mm
                    LEFT JOIN mod_mail_constructor mcc ON
                        mcc.id = mm.mail_template_id
                    /*LEFT JOIN mod_classificators mc ON
                        mc.id = mcc.mail_type*/
                WHERE
                    1
                ORDER BY
                    mm.mail_inserted DESC
                LIMIT
                    0, 150
                 ";

        $this->db->query($sSql);
        return $this->db->getArray();
    }

    /**
     * Function to delete table records form db
     *
     * @author Mareks Keišs <mareks.keiss@brsystems.lv>
     * @category cmsMailEngine Module
     * @param array $ids - record ids to delete
     * @return bool true / false
     * @version 1.1
     */
    public function deleteRecords($ids){

        $ids = implode(',', $ids);
        if(!$this->db->execute("DELETE FROM {$this->table} WHERE id IN ({$ids})")){
            return false;
        }
        return true;
    }

    /**
     * Function to change record status in db table
     *
     * @author Mareks Keišs <mareks.keiss@brsystems.lv>
     * @category cmsMailEngine Module
     * @param array $ids - record ids to affect
     * @param string $field - field to update for status ENUM
     * @return bool true / false
     * @version 1.1
     */
    public function changeRecordsStatus($ids, $field){
        if(count($ids) && $field){
            $time = time();
            $ids = implode(',', $ids);
            $status = $this->db->query("UPDATE {$this->table} mm SET {$field} = '1', mail_modified = '{$time}' WHERE {$field} = '0' AND mail_locked = '0' AND id IN ({$ids})");
            if(!$status)
                return $status;
            $status = $this->db->query("UPDATE {$this->table} mm SET {$field} = '0', mail_modified = '{$time}' WHERE {$field} = '1' AND mail_locked = '0' AND id IN ({$ids}) AND mail_modified <> '{$time}'");
            return $status;
        }
    }

    /**
     * Function to get record by id
     *
     * @author Mareks Keišs <mareks.keiss@brsystems.lv>
     * @category cmsMailEngine Module
     * @param int $id - record id
     * @return array of data
     * @version 1.1
     */
    public function getRecordById($id){

        return $this->db->_querySelectRow($this->table, false, array('id' => $id));

    }

    /**
     * Function to record data by id
     *
     * @author Mareks Keišs <mareks.keiss@brsystems.lv>
     * @category cmsMailEngine Module
     * @param int $id - record id
     * @param array $data - data to update
     * @return boot true or false
     * @version 1.1
     */
    public function saveRecordById($id, $data){

        if(count($data)){
            if($id){
                if(!$this->db->_queryUpdate($this->table, $data, array('id' => $id), true)){
                    return false;
                }
            }else{
                if(!$id = $this->db->_queryInsert($this->table, $data, false, true)){
                    return false;
                }
            }
            return $id;
        }

        return false;
    }

    /**
     * Function to get mails for cron to send
     *
     * @author Mareks Keišs <mareks.keiss@brsystems.lv>
     * @category cmsMailEngine Module
     * @param int $limit - limit to get mails in one row
     * @internal param array $rows - record id rows array
     * @return array|bool true / false
     * @version 1.1
     */
    public function getCronMAILS($limit = 20){

        // Select 20 mail with atachments and 20 without
        $sSql = "
                SELECT DISTINCT * FROM (
                    SELECT * FROM (
                        SELECT
                            *
                        FROM
                            mod_mail_outgoing
                        WHERE
                            mail_locked = '0'
                            AND mail_disabled = '0'
                            AND mail_send_atempt <= 4
                            AND LENGTH(mail_owner) > 0
                        ORDER BY
                            mail_priority, mail_send_atempt, id ASC
                        LIMIT
                            0, {$limit}
                    ) att
                    UNION ALL
                    SELECT * FROM (
                        SELECT
                            *
                        FROM
                            mod_mail_outgoing
                        WHERE
                            mail_locked = '0'
                            AND mail_disabled = '0'
                            AND mail_attachment = ''
                            AND mail_send_atempt <= 4
                            AND LENGTH(mail_owner) > 0
                        ORDER BY
                            mail_priority, mail_send_atempt, id ASC
                        LIMIT
                            0, {$limit}
                    ) natt
                 ) mtt
                 " . "";

        $this->db->query($sSql);
        return $this->db->getArray();

    }

    /**
     * Function to disable all new messages in table
     *
     * @author Mareks Keišs <mareks.keiss@brsystems.lv>
     * @category cmsMailEngine Module
     * @return bool true / false
     * @version 1.1
     */
    public function stopNewOutgoing(){

        $sSql = "UPDATE mod_mail_outgoing SET mail_disabled = '1' WHERE mail_locked = '0'";
        return $this->db->query($sSql);

    }

    /**
     * Function to enable all new messages in table
     *
     * @author Mareks Keišs <mareks.keiss@brsystems.lv>
     * @category cmsMailEngine Module
     * @return bool true / false
     * @version 1.1
     */
    public function resumeNewOutgoing(){

        $sSql = "UPDATE mod_mail_outgoing SET mail_disabled = '0' WHERE mail_disabled = '1' AND mail_locked = '0'";
        return $this->db->query($sSql);

    }

    /**
     * Function to insert mails for all newsletter users
     *
     * @author Mareks Keišs <mareks.keiss@brsystems.lv>
     * @category cmsMailEngine Module
     * @param array $data - insert query data fields with values
     * @return bool true / false
     * @version 1.1
     */
    public function createMailsForAllUserMails($data){


    }

    /**
     * Function to get time before next 5min cron call
     *
     * @author Mareks Keišs <mareks.keiss@brsystems.lv>
     * @category cmsMailEngine Module
     * @param int $time - by ref time in seconds
     * @return bool true / false
     * @version 1.1
     */
    public function getNext5MinCronCall(&$time)
    {
        $min = self::CRON_TIMER_INTERVAL;
        $sSql = "
                SELECT
                    `time`
                FROM
                    " . cDbLog::C_BASE_ACTION_TABLE . "
                WHERE 
                    `action` like '%chk_cron%'
                ORDER BY
                    id DESC
                LIMIT
                    1
                ";

        $t = 0;
        $time = 'Not active!';

        $this->db->query($sSql);
        if ($tt = $this->db->getOne()) {
            if ($tt + 60 * $min + 5 >= time()) {
                $t = $tt + 60 * $min - time();
                $time = '00:00';
                if ($t > 0) {
                    $time = date("i:s", $t);
                }
            }
        }

        return $t;
    }

    /**
     * Function to get newsletter sent count today
     *
     * @author Mareks Keišs <mareks.keiss@brsystems.lv>
     * @category cmsMailEngine Module
     * @param array $between - search between
     * @return mixed
     * @version 1.1
     */
    public function getNewsletterSentCount($between = array()){

        $count = false;

        if(!!$between){
            $sSql = "
                    SELECT
                        COUNT(ms.id)
                    FROM
                        mod_mail_sent ms
                    WHERE
                        ms.mail_marker = 'newsletter'
                        AND ms.mail_sent BETWEEN {$between['from']} AND {$between['till']}
                    ";

            $this->db->query($sSql);
            $count = $this->db->getOne();
        }

        return $count;
    }

    /**
     * Function to enable newsletter outgoing mail count
     *
     * @author Mareks Keišs <mareks.keiss@brsystems.lv>
     * @category cmsMailEngine Module
     * @param int $enable - item count to enable
     * @return mixed
     * @version 1.1
     */
    public function enableOutgoingNewsletterCount($enable = 0){

        if($enable > 0){

            $sSql = "
                        CREATE TEMPORARY TABLE _temp_outgoing_mail_upd
                        SELECT
                            mm.id
                        FROM
                            mod_mail_outgoing mm
                        WHERE
                            mm.mail_disabled = '1'
                            AND mm.mail_locked = '0'
                            AND mm.mail_marker = 'newsletter'
                        ORDER BY
                            mm.mail_priority, mm.mail_send_atempt, mm.mail_disabled, mm.id ASC
                        LIMIT
                            0, {$enable};
                    ";

            $this->db->query("DROP TABLE IF EXISTS _temp_outgoing_mail_upd");
            $this->db->query($sSql);
            $this->db->query("UPDATE mod_mail_outgoing SET mail_disabled = '0' WHERE id IN (SELECT id FROM _temp_outgoing_mail_upd)");
            $this->db->query("DROP TABLE IF EXISTS _temp_outgoing_mail_upd");

            return true;
        }

        return false;
    }

    /**
     * Function to enable newsletter outgoing mail count
     *
     * @author Mareks Keišs <mareks.keiss@brsystems.lv>
     * @category cmsMailEngine Module
     * @return mixed
     * @version 1.1
     */
    public function getMailTemplateDataByLanguage(){


        $sSql = "
                SELECT 
                    mcc.id,
                    mcc.mail_type,
                    mccd.mail_title,
                    mccd.mail_data,
                    mccd.mail_lang_id as lang_id
                FROM
                    mod_mail_constructor mcc
                    LEFT JOIN mod_mail_constructor_data mccd ON
                        mcc.id = mccd.mail_id
                WHERE 
                    mcc.mail_disabled = '0'
                 ";

        $this->db->query($sSql);
        return $this->db->getFieldBasedArrayFieldsAdv(array('mail_type', 'lang_id'), array('mail_title', 'mail_data', 'lang'));

    }

    /**
     * Function to gather all newsletter subscription emails
     *
     * @author Aivars Žukovskis <info@brsystems.lv>
     * @category cmsMailEngine Module
     * @return mixed
     * @version 1.1
     */
    public function gatherAllNewsletterSubscriptionEmails(){

        $this->db->_querySelect('mod_users_subscription_mails', array('email'), array('email_sub' => 1), false, false, false);
        return $this->db->getKeyValBasedArray('email', 'email');

    }

    /**
     * Function to gather all system users emails + additional data
     *
     * @author Aivars Žukovskis <info@brsystems.lv>
     * @category cmsMailEngine Module
     * @return mixed
     * @version 1.1
     */
    public function gatherAllSystemUsersEmails(){

        return $this->db->_querySelect('mod_users', array('user_name', 'user_surname', 'user_email', 'user_lang_id'), array('user_blocked' => 0, 'user_deleted' => 0));

    }
}