<?php
/* Copyright (C) 2018      Alexandre Spangaro   <aspangaro@zendsi.com>
 * Copyright (c) 2018      Fidesio              <contact@fidesio.com>
 *
 * 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/compta/salaries/class/salariesstats.class.php
 *  \ingroup    salaries
 *  \brief      Fichier de la classe de gestion des stats des salaires
 */
include_once DOL_DOCUMENT_ROOT . '/core/class/stats.class.php';
include_once DOL_DOCUMENT_ROOT . '/compta/salaries/class/paymentsalary.class.php';

/**
 *	Classe permettant la gestion des stats des salaires
 */
class SalariesStats extends Stats
{
	/**
	 * @var string Name of table without prefix where object is stored
	 */
	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
	 * @param   mixed       $userid    Id user for filter or array of user ids
	 * @return  void
	 */
	function __construct($db, $socid=0, $userid=0)
	{
		global $conf;

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

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

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


	/**
	 *  Return the number of salary by year
	 *
	 *	@return		array	Array of values
	 */
	function getNbByYear()
	{
		$sql = "SELECT YEAR(datep) as dm, count(*)";
		$sql.= " FROM ".$this->from;
		$sql.= " GROUP BY dm DESC";
		$sql.= " WHERE ".$this->where;

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


	/**
	 *  Return the number of salary by month, for a given year
	 *
	 *	@param	string	$year		Year to scan
	 *	@param	int		$format		0=Label of absiss is a translated text, 1=Label of absiss is month number, 2=Label of absiss is first letter of month
	 *	@return	array				Array of values
	 */
	function getNbByMonth($year, $format=0)
	{
		$sql = "SELECT MONTH(datep) as dm, count(*)";
		$sql.= " FROM ".$this->from;
		$sql.= " WHERE YEAR(datep) = ".$year;
		$sql.= " AND ".$this->where;
		$sql.= " GROUP BY dm";
		$sql.= $this->db->order('dm','DESC');

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


	/**
	 * 	Return amount of salaries by month for a given year
	 *
	 *	@param	int		$year		Year to scan
	*	@param	int		$format		0=Label of absiss is a translated text, 1=Label of absiss is month number, 2=Label of absiss is first letter of month
	 *	@return	array				Array of values
	 */
	function getAmountByMonth($year, $format=0)
	{
		$sql = "SELECT date_format(datep,'%m') as dm, sum(".$this->field.")";
		$sql.= " FROM ".$this->from;
		$sql.= " WHERE date_format(datep,'%Y') = '".$year."'";
		$sql.= " AND ".$this->where;
		$sql.= " GROUP BY dm";
		$sql.= $this->db->order('dm','DESC');

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

	/**
	 *	Return average amount
	 *
	 *	@param	int		$year		Year to scan
	 *	@return	array				Array of values
	 */
	function getAverageByMonth($year)
	{
		$sql = "SELECT date_format(datep,'%m') as dm, avg(".$this->field.")";
		$sql.= " FROM ".$this->from;
		$sql.= " WHERE date_format(datep,'%Y') = '".$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
	 */
	function getAllByYear()
	{
		$sql = "SELECT date_format(datep,'%Y') as year, count(*) as nb, sum(".$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);
	}
}