<?php
/* Copyright (C) 2003      Rodolphe Quiedeville <rodolphe@quiedeville.org>
 * Copyright (c) 2005-2013 Laurent Destailleur  <eldy@users.sourceforge.net>
 * Copyright (C) 2005-2009 Regis Houssin        <regis.houssin@capnetworks.com>
 * Copyright (C) 2011      Juanjo Menent		<jmenent@2byte.es>
 *
 * 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       htdocs/expedition/class/expeditionstats.class.php
 *  \ingroup    expedition
 *  \brief      File of class fo tmanage shipment statistics
 */

include_once DOL_DOCUMENT_ROOT . '/core/class/stats.class.php';
include_once DOL_DOCUMENT_ROOT . '/expedition/class/expedition.class.php';
include_once DOL_DOCUMENT_ROOT . '/core/lib/date.lib.php';


/**
 *		Class to manage shipment statistics
 */
class ExpeditionStats extends Stats
{
	public $table_element;

	var $socid;
    var $userid;

    var $from;
	var $field;
    var $where;
    

    /**
     * Constructor
     *
     * @param	DoliDB	$db      	Database handler
	 * @param 	int		$socid	   	Id third party for filter
	 * @param 	string	$mode	   	Option (not used)
	 * @param   int		$userid    	Id user for filter (creation user)
     */
    function __construct($db, $socid, $mode, $userid=0)
    {
		global $user, $conf;
    	
		$this->db = $db;
        
		$this->socid = ($socid > 0 ? $socid : 0);
        $this->userid = $userid;
		$this->cachefilesuffix = $mode; 
        
        $object=new Expedition($this->db);
		$this->from = MAIN_DB_PREFIX.$object->table_element." as c";
		//$this->from.= ", ".MAIN_DB_PREFIX."societe as s";
		$this->field='weight';	// Warning, unit of weight is NOT USED AND MUST BE
		$this->where.= " c.fk_statut > 0";    // Not draft and not cancelled

		//$this->where.= " AND c.fk_soc = s.rowid AND c.entity = ".$conf->entity;
		$this->where.= " AND c.entity = ".$conf->entity;
		if (!$user->rights->societe->client->voir && !$this->socid) $this->where .= " AND c.fk_soc = sc.fk_soc AND sc.fk_user = " .$user->id;
		if ($this->socid)
		{
			$this->where.=" AND c.fk_soc = ".$this->socid;
		}
        if ($this->userid > 0) $this->where.=' AND c.fk_user_author = '.$this->userid;
    }

    /**
     * Return shipment number by month for a year
     *
	 * @param	int		$year		Year to scan
	 * @return	array				Array with number by month
     */
    function getNbByMonth($year)
    {
        global $user;

        $sql = "SELECT date_format(c.date_valid,'%m') as dm, COUNT(*) as nb";
		$sql.= " FROM ".$this->from;
		if (!$user->rights->societe->client->voir && !$this->socid) $sql .= ", ".MAIN_DB_PREFIX."societe_commerciaux as sc";
		$sql.= " WHERE c.date_valid BETWEEN '".$this->db->idate(dol_get_first_day($year))."' AND '".$this->db->idate(dol_get_last_day($year))."'";
		$sql.= " AND ".$this->where;
		$sql.= " GROUP BY dm";
        $sql.= $this->db->order('dm','DESC');

		$res=$this->_getNbByMonth($year, $sql);
		return $res;
    }

	/**
	 * Return shipments number per year
	 *
	 * @return	array	Array with number by year
	 *
	 */
	function getNbByYear()
	{
		global $user;

		$sql = "SELECT date_format(c.date_valid,'%Y') as dm, COUNT(*) as nb, SUM(c.".$this->field.")";
		$sql.= " FROM ".$this->from;
		if (!$user->rights->societe->client->voir && !$this->socid) $sql .= ", ".MAIN_DB_PREFIX."societe_commerciaux as sc";
		$sql.= " WHERE ".$this->where;
		$sql.= " GROUP BY dm";
        $sql.= $this->db->order('dm','DESC');

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

	/**
	 *	Return nb, total and average
	 *
	 *	@return	array	Array of values
	 */
	function getAllByYear()
	{
		global $user;

		$sql = "SELECT date_format(c.date_valid,'%Y') as year, COUNT(*) as nb, SUM(c.".$this->field.") as total, AVG(".$this->field.") as avg";
		$sql.= " FROM ".$this->from;
		if (!$user->rights->societe->client->voir && !$this->socid) $sql .= ", ".MAIN_DB_PREFIX."societe_commerciaux as sc";
		$sql.= " WHERE ".$this->where;
		$sql.= " GROUP BY year";
        $sql.= $this->db->order('year','DESC');

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