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<?php
/* Copyright (C) 2016      Jean-FranÃ§ois Ferry  <hello@librethic.io>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

/**
 *       \file       /ticket/class/ticketstats.class.php
 *       \ingroup    ticket
 *       \brief      Fichier de la classe de gestion des stats des tickets
 */
require_once DOL_DOCUMENT_ROOT . '/core/class/stats.class.php';
require_once 'ticket.class.php';


/**
 * Classe permettant la gestion des stats des deplacements et notes de frais
 */
class TicketStats extends Stats
{
    /**
     * @var string Name of table without prefix where object is stored
     */
    public $table_element;

    public $socid;
    public $userid;

    public $from;
    public $field;
    public $where;

    /**
     * Constructor
     *
     * @param  DoliDB $db     Database handler
     * @param  int    $socid  Id third party
     * @param  mixed  $userid Id user for filter or array of user ids
     * @return void
     */
    public function __construct($db, $socid = 0, $userid = 0)
    {
        global $conf;

        $this->db = $db;
        $this->socid = $socid;
        $this->userid = $userid;

        $object = new Ticket($this->db);
        $this->from = MAIN_DB_PREFIX . $object->table_element;
        $this->field = 'timing';

        $this->where = " fk_statut > 0";
        $this->where .= " AND entity = " . $conf->entity;
        if ($this->socid > 0) {
            $this->where .= " AND fk_soc = " . $this->socid;
        }
        if (is_array($this->userid) && count($this->userid) > 0) {
            $this->where .= ' AND fk_user_create IN (' . join(',', $this->userid) . ')';
        } elseif ($this->userid > 0) {
            $this->where .= ' AND fk_user_create = ' . $this->userid;
        }
    }

    /**
     *     Renvoie le nombre de tickets par annee
     *
     *    @return array    Array of values
     */
    public function getNbByYear()
    {
        $sql = "SELECT YEAR(datec) as dm, count(*)";
        $sql .= " FROM " . $this->from;
        $sql .= " GROUP BY dm DESC";
        $sql .= " WHERE " . $this->where;

        return $this->_getNbByYear($sql);
    }

    /**
     *     Renvoie le nombre de facture par mois pour une annee donnee
     *
     *    @param  string $year Year to scan
     *    @return array            Array of values
     */
    public function getNbByMonth($year)
    {
        $sql = "SELECT MONTH(datec) as dm, count(*)";
        $sql .= " FROM " . $this->from;
        $sql .= " WHERE YEAR(datec) = " . $year;
        $sql .= " AND " . $this->where;
        $sql .= " GROUP BY dm";
        $sql .= $this->db->order('dm', 'DESC');

        $res = $this->_getNbByMonth($year, $sql);
        //var_dump($res);print '<br>';
        return $res;
    }

    /**
     *     Renvoie le montant de facture par mois pour une annee donnee
     *
     *    @param  int $year Year to scan
     *    @return array                Array of values
     */
    public function getAmountByMonth($year)
    {
        $sql = "SELECT date_format(datec,'%m') as dm, sum(" . $this->field . ")";
        $sql .= " FROM " . $this->from;
        $sql .= " WHERE date_format(datec,'%Y') = '" . $year . "'";
        $sql .= " AND " . $this->where;
        $sql .= " GROUP BY dm";
        $sql .= $this->db->order('dm', 'DESC');

        $res = $this->_getAmountByMonth($year, $sql);
        //var_dump($res);print '<br>';
        return $res;
    }

    /**
     *    Return average amount
     *
     *    @param  int $year Year to scan
     *    @return array                Array of values
     */
    public function getAverageByMonth($year)
    {
        $sql = "SELECT date_format(datec,'%m') as dm, avg(" . $this->field . ")";
        $sql .= " FROM " . $this->from;
        $sql .= " WHERE date_format(datec,'%Y') = '" . $year . "'";
        $sql .= " AND " . $this->where;
        $sql .= " GROUP BY dm";
        $sql .= $this->db->order('dm', 'DESC');

        return $this->_getAverageByMonth($year, $sql);
    }

    /**
     *    Return nb, total and average
     *
     *    @return array                Array of values
     */
    public function getAllByYear()
    {
        $sql = "SELECT date_format(datec,'%Y') as year, count(*) as nb, sum(" . $this->field . ") as total, avg(" . $this->field . ") as avg";
        $sql .= " FROM " . $this->from;
        $sql .= " WHERE " . $this->where;
        $sql .= " GROUP BY year";
        $sql .= $this->db->order('year', 'DESC');

        return $this->_getAllByYear($sql);
    }
}