<?php
/* Copyright (C) 2007-2012 Laurent Destailleur  <eldy@users.sourceforge.net>
 * Copyright (C) 2014	   Juanjo Menent		<jmenent@2byte.es>
 * Copyright (C) 2015      Ion Agorria          <ion@agorria.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 <https://www.gnu.org/licenses/>.
 */

/**
 *	\file       htdocs/product/dynamic_price/class/price_expression.class.php
 *	\ingroup    product
 *  \brief      Class for accessing price expression table
 */


/**
 *	Class for accesing price expression table
 */
class PriceExpression
{
	/**
	 * @var DoliDB Database handler.
	 */
	public $db;

	/**
	 * @var string Error code (or message)
	 */
	public $error = '';

	/**
	 * @var string[] Error codes (or messages)
	 */
	public $errors = array();

	/**
	 * @var int ID
	 */
	public $id;

	public $title;
	public $expression;

	/**
	 * @var string Name of table without prefix where object is stored
	 */
	public $table_element = "c_price_expression";

	/**
	 *  Constructor
	 *
	 *  @param	DoliDb		$db      Database handler
	 */
	public function __construct($db)
	{
		$this->db = $db;
	}


	/**
	 *  Create object into database
	 *
	 *  @param	User	$user        User that creates
	 *  @param  int		$notrigger   0=launch triggers after, 1=disable triggers
	 *  @return int      		   	 <0 if KO, Id of created object if OK
	 */
	public function create($user, $notrigger = 0)
	{
		$error = 0;

		// Clean parameters
		if (isset($this->title)) {
			$this->title = trim($this->title);
		}
		if (isset($this->expression)) {
			$this->expression = trim($this->expression);
		}

		// Insert request
		$sql = "INSERT INTO ".$this->db->prefix().$this->table_element." (";
		$sql .= "title, expression";
		$sql .= ") VALUES (";
		$sql .= " ".(isset($this->title) ? "'".$this->db->escape($this->title)."'" : "''").",";
		$sql .= " ".(isset($this->expression) ? "'".$this->db->escape($this->expression)."'" : "''");
		$sql .= ")";

		$this->db->begin();

		dol_syslog(__METHOD__, LOG_DEBUG);
		$resql = $this->db->query($sql);
		if (!$resql) {
			$error++; $this->errors[] = "Error ".$this->db->lasterror();
		}

		if (!$error) {
			$this->id = $this->db->last_insert_id($this->db->prefix().$this->table_element);
		}

		// Commit or rollback
		if ($error) {
			foreach ($this->errors as $errmsg) {
				dol_syslog(__METHOD__." ".$errmsg, LOG_ERR);
				$this->error .= ($this->error ? ', '.$errmsg : $errmsg);
			}
			$this->db->rollback();
			return -1 * $error;
		} else {
			$this->db->commit();
			return $this->id;
		}
	}


	/**
	 *  Load object in memory from the database
	 *
	 *  @param		int		$id    	Id object
	 *  @return		int			    < 0 if KO, 0 if OK but not found, > 0 if OK
	 */
	public function fetch($id)
	{
		// Check parameters
		if (empty($id)) {
			$this->error = 'ErrorWrongParameters';
			return -1;
		}

		$sql = "SELECT title, expression";
		$sql .= " FROM ".$this->db->prefix().$this->table_element;
		$sql .= " WHERE rowid = ".((int) $id);

		dol_syslog(__METHOD__);
		$resql = $this->db->query($sql);
		if ($resql) {
			$obj = $this->db->fetch_object($resql);
			if ($obj) {
				$this->id = $id;
				$this->title = $obj->title;
				$this->expression = $obj->expression;
				return 1;
			} else {
				return 0;
			}
		} else {
			  $this->error = "Error ".$this->db->lasterror();
			return -1;
		}
	}

	// phpcs:disable PEAR.NamingConventions.ValidFunctionName.ScopeNotCamelCaps
	/**
	 *    List all price expressions
	 *
	 *    @return	array|int				Array of price expressions, <0 if ko
	 */
	public function list_price_expression()
	{
		// phpcs:enable
		$sql = "SELECT rowid, title, expression";
		$sql .= " FROM ".$this->db->prefix().$this->table_element;
		$sql .= " ORDER BY title";

		dol_syslog(__METHOD__, LOG_DEBUG);
		$resql = $this->db->query($sql);
		if ($resql) {
			$retarray = array();

			while ($record = $this->db->fetch_array($resql)) {
				$price_expression_obj = new PriceExpression($this->db);
				$price_expression_obj->id = $record["rowid"];
				$price_expression_obj->title = $record["title"];
				$price_expression_obj->expression = $record["expression"];
				$retarray[] = $price_expression_obj;
			}

			$this->db->free($resql);
			return $retarray;
		} else {
			$this->error = $this->db->error();
			return -1;
		}
	}


	// phpcs:disable PEAR.NamingConventions.ValidFunctionName.ScopeNotCamelCaps
	/**
	 *  Returns any existing rowid with specified title
	 *
	 *  @param		String	$title  Title of expression
	 *  @return		int			    < 0 if KO, 0 if OK but not found, > 0 rowid
	 */
	public function find_title($title)
	{
		// phpcs:enable
		$sql = "SELECT rowid";
		$sql .= " FROM ".$this->db->prefix().$this->table_element;
		$sql .= " WHERE title = '".$this->db->escape($title)."'";

		dol_syslog(__METHOD__, LOG_DEBUG);
		$resql = $this->db->query($sql);
		if ($resql) {
			$obj = $this->db->fetch_object($resql);
			if ($obj) {
				return (int) $obj->rowid;
			} else {
				return 0;
			}
		} else {
			  $this->error = "Error ".$this->db->lasterror();
			return -1;
		}
	}


	/**
	 *  Update object into database
	 *
	 *  @param	User	$user        User that modifies
	 *  @param  int		$notrigger	 0=launch triggers after, 1=disable triggers
	 *  @return int     		   	 <0 if KO, >0 if OK
	 */
	public function update($user = 0, $notrigger = 0)
	{
		$error = 0;

		// Clean parameters
		if (isset($this->title)) {
			$this->title = trim($this->title);
		}
		if (isset($this->expression)) {
			$this->expression = trim($this->expression);
		}

		// Update request
		$sql = "UPDATE ".$this->db->prefix().$this->table_element." SET";
		$sql .= " title = ".(isset($this->title) ? "'".$this->db->escape($this->title)."'" : "''").",";
		$sql .= " expression = ".(isset($this->expression) ? "'".$this->db->escape($this->expression)."'" : "''");
		$sql .= " WHERE rowid = ".((int) $this->id);

		$this->db->begin();

		dol_syslog(__METHOD__);
		$resql = $this->db->query($sql);
		if (!$resql) {
			$error++; $this->errors[] = "Error ".$this->db->lasterror();
		}

		// Commit or rollback
		if ($error) {
			foreach ($this->errors as $errmsg) {
				dol_syslog(__METHOD__." ".$errmsg, LOG_ERR);
				$this->error .= ($this->error ? ', '.$errmsg : $errmsg);
			}
			$this->db->rollback();
			return -1 * $error;
		} else {
			$this->db->commit();
			return 1;
		}
	}


	 /**
	  *  Delete object in database
	  *
	  *	@param  User	$user        User that deletes
	  *  @param  int		$notrigger	 0=launch triggers after, 1=disable triggers
	  *  @return	int					 <0 if KO, >0 if OK
	  */
	public function delete(User $user, $notrigger = 0)
	{
		$error = 0;

		$rowid = $this->id;

		$this->db->begin();

		if (!$error) {
			$sql = "DELETE FROM ".$this->db->prefix().$this->table_element;
			$sql .= " WHERE rowid = ".((int) $rowid);

			dol_syslog(__METHOD__);
			$resql = $this->db->query($sql);
			if (!$resql) {
				$error++; $this->errors[] = "Error ".$this->db->lasterror();
			}
		}

		// Commit or rollback
		if ($error) {
			foreach ($this->errors as $errmsg) {
				dol_syslog(__METHOD__." ".$errmsg, LOG_ERR);
				$this->error .= ($this->error ? ', '.$errmsg : $errmsg);
			}
			$this->db->rollback();
			return -1 * $error;
		} else {
			$this->db->commit();
			return 1;
		}
	}

	/**
	 *  Initialise object with example values
	 *  Id must be 0 if object instance is a specimen
	 *
	 *  @return	void
	 */
	public function initAsSpecimen()
	{
		$this->id = 0;
		$this->expression = '';
	}
}
