<?php
/*+**********************************************************************************
 * The contents of this file are subject to the vtiger CRM Public License Version 1.0
 * ("License"); You may not use this file except in compliance with the License
 * The Original Code is:  vtiger CRM Open Source
 * The Initial Developer of the Original Code is vtiger.
 * Portions created by vtiger are Copyright (C) vtiger.
 * All Rights Reserved.
 ************************************************************************************/
include_once('vtlib/Vtiger/Utils.php');
include_once('vtlib/Vtiger/Version.php');

/**
 * Provides API to work with vtiger CRM Custom View (Filter)
 * @package vtlib
 */
class Vtiger_Filter {
	/** ID of this filter instance */
	var $id;
	var $name;
	var $isdefault;

	var $status    = false; // 5.1.0 onwards
	var $inmetrics = false;
	var $entitytype= false;

	var $module;

	/**
	 * Constructor
	 */
	function __construct() {
	}

	/**
	 * Get unique id for this instance
	 * @access private
	 */
	function __getUniqueId() {
		global $adb;
		return $adb->getUniqueID('vtiger_customview');
	}

	/**
	 * Initialize this filter instance
	 * @param Vtiger_Module Instance of the module to which this filter is associated.
	 * @access private
	 */
	function initialize($valuemap, $moduleInstance=false) {
		$this->id = $valuemap['cvid'];
		$this->name= $valuemap['viewname'];
		$this->module = $moduleInstance ? $moduleInstance : Vtiger_Module::getInstance($valuemap['tabid']);
	}

	/**
	 * Create this instance
	 * @param Vtiger_Module Instance of the module to which this filter should be associated with
	 * @access private
	 */
	function __create($moduleInstance) {
		global $adb;
		$this->module = $moduleInstance;

		$this->id = $this->__getUniqueId();
		$this->isdefault = ($this->isdefault===true||$this->isdefault=='true')?1:0;
		$this->inmetrics = ($this->inmetrics===true||$this->inmetrics=='true')?1:0;

		$adb->pquery("INSERT INTO vtiger_customview(cvid,viewname,setdefault,setmetrics,entitytype) VALUES(?,?,?,?,?)", 
			Array($this->id, $this->name, $this->isdefault, $this->inmetrics, $this->module->name));

		self::log("Creating Filter $this->name ... DONE");

		// Filters are role based from 5.1.0 onwards
		if(!$this->status) {
			if(strtoupper(trim($this->name)) == 'ALL') $this->status = '0'; // Default
			else $this->status = '3'; // Public
			$adb->pquery("UPDATE vtiger_customview SET status=? WHERE cvid=?", Array($this->status, $this->id));

			self::log("Setting Filter $this->name to status [$this->status] ... DONE");
		}
		// END
		
	}

	/**
	 * Update this instance
	 * @access private
	 * @internal TODO
	 */
	function __update() {
		self::log("Updating Filter $this->name ... DONE");
	}

	/**
	 * Delete this instance
	 * @access private
	 */
	function __delete() {
		global $adb;
		$adb->pquery("DELETE FROM vtiger_cvadvfilter WHERE cvid=?", Array($this->id));
		$adb->pquery("DELETE FROM vtiger_cvcolumnlist WHERE cvid=?", Array($this->id));
		$adb->pquery("DELETE FROM vtiger_customview WHERE cvid=?", Array($this->id));
	}

	/**
	 * Save this instance
	 * @param Vtiger_Module Instance of the module to use
	 */
	function save($moduleInstance=false) {
		if($this->id) $this->__update();
		else $this->__create($moduleInstance);
		return $this->id;
	}

	/**
	 * Delete this instance
	 * @access private
	 */
	function delete() {
		$this->__delete();
	}

	/**
	 * Get the column value to use in custom view tables.
	 * @param Vtiger_Field Instance of the field
	 * @access private
	 */
	function __getColumnValue($fieldInstance) {
		$tod = explode('~', $fieldInstance->typeofdata);
		$displayinfo = $fieldInstance->getModuleName().'_'.str_replace(' ','_',$fieldInstance->label).':'.$tod[0];
		$cvcolvalue = "$fieldInstance->table:$fieldInstance->column:$fieldInstance->name:$displayinfo";
		return $cvcolvalue;
	}

	/**
	 * Add the field to this filer instance
	 * @param Vtiger_Field Instance of the field
	 * @param Integer Index count to use
	 */
	function addField($fieldInstance, $index=0) {
		global $adb;

		$cvcolvalue = $this->__getColumnValue($fieldInstance);

		$adb->pquery("UPDATE vtiger_cvcolumnlist SET columnindex=columnindex+1 WHERE cvid=? AND columnindex>=? ORDER BY columnindex DESC", 
			Array($this->id, $index));
		$adb->pquery("INSERT INTO vtiger_cvcolumnlist(cvid,columnindex,columnname) VALUES(?,?,?)", Array($this->id, $index, $cvcolvalue));

		$this->log("Adding $fieldInstance->name to $this->name filter ... DONE");
		return $this;
	}

	/**
	 * Add rule to this filter instance
	 * @param Vtiger_Field Instance of the field
	 * @param String One of [EQUALS, NOT_EQUALS, STARTS_WITH, ENDS_WITH, CONTAINS, DOES_NOT_CONTAINS, LESS_THAN, 
	 *                       GREATER_THAN, LESS_OR_EQUAL, GREATER_OR_EQUAL]
	 * @param String Value to use for comparision
	 * @param Integer Index count to use
	 */
	function addRule($fieldInstance, $comparator, $comparevalue, $index=0, $group=1, $condition='and') {
		global $adb;

		if(empty($comparator)) return $this;

		$comparator = self::translateComparator($comparator);
		$cvcolvalue = $this->__getColumnValue($fieldInstance);

		$adb->pquery("UPDATE vtiger_cvadvfilter set columnindex=columnindex+1 WHERE cvid=? AND columnindex>=? ORDER BY columnindex DESC",
			Array($this->id, $index));		
		$adb->pquery("INSERT INTO vtiger_cvadvfilter(cvid, columnindex, columnname, comparator, value, groupid, column_condition) VALUES(?,?,?,?,?,?,?)",
			Array($this->id, $index, $cvcolvalue, $comparator, $comparevalue, $group, $condition));

		Vtiger_Utils::Log("Adding Condition " . self::translateComparator($comparator,true) ." on $fieldInstance->name of $this->name filter ... DONE");
		
		return $this;
	}

	/**
	 * Translate comparator (condition) to long or short form.
	 * @access private
	 * @internal Used from Vtiger_PackageExport also
	 */
	static function translateComparator($value, $tolongform=false) {
		$comparator = false;
		if($tolongform) {
			$comparator = strtolower($value);
			if($comparator == 'e') $comparator = 'EQUALS';
			else if($comparator == 'n') $comparator = 'NOT_EQUALS';
			else if($comparator == 's') $comparator = 'STARTS_WITH';
			else if($comparator == 'ew') $comparator = 'ENDS_WITH';
			else if($comparator == 'c') $comparator = 'CONTAINS';
			else if($comparator == 'k') $comparator = 'DOES_NOT_CONTAINS';
			else if($comparator == 'l') $comparator = 'LESS_THAN';
			else if($comparator == 'g') $comparator = 'GREATER_THAN';
			else if($comparator == 'm') $comparator = 'LESS_OR_EQUAL';
			else if($comparator == 'h') $comparator = 'GREATER_OR_EQUAL';
		} else {
			$comparator = strtoupper($value);
			if($comparator == 'EQUALS') $comparator = 'e';
			else if($comparator == 'NOT_EQUALS') $comparator = 'n';
			else if($comparator == 'STARTS_WITH') $comparator = 's';
			else if($comparator == 'ENDS_WITH') $comparator = 'ew';
			else if($comparator == 'CONTAINS') $comparator = 'c';
			else if($comparator == 'DOES_NOT_CONTAINS') $comparator = 'k';
			else if($comparator == 'LESS_THAN') $comparator = 'l';
			else if($comparator == 'GREATER_THAN') $comparator = 'g';
			else if($comparator == 'LESS_OR_EQUAL') $comparator = 'm';
			else if($comparator == 'GREATER_OR_EQUAL') $comparator = 'h';
		}
		return $comparator;
	}

	/**
	 * Helper function to log messages
	 * @param String Message to log
	 * @param Boolean true appends linebreak, false to avoid it
	 * @access private
	 */
	static function log($message, $delim=true) {
		Vtiger_Utils::Log($message, $delim);
	}

	/**
	 * Get instance by filterid or filtername
	 * @param mixed filterid or filtername
	 * @param Vtiger_Module Instance of the module to use when filtername is used
	 */
	static function getInstance($value, $moduleInstance=false) {
		global $adb;
		$instance = false;

		$query = false;
		$queryParams = false;
		if(Vtiger_Utils::isNumber($value)) {
			$query = "SELECT * FROM vtiger_customview WHERE cvid=?";
			$queryParams = Array($value);
		} else {
			$query = "SELECT * FROM vtiger_customview WHERE viewname=? AND entitytype=?";
			$queryParams = Array($value, $moduleInstance->name);
		}
		$result = $adb->pquery($query, $queryParams);
		if($adb->num_rows($result)) {
			$instance = new self();
			$instance->initialize($adb->fetch_array($result), $moduleInstance);
		}
		return $instance;
	}

	/**
	 * Get all instances of filter for the module
	 * @param Vtiger_Module Instance of module
	 */
	static function getAllForModule($moduleInstance) {
		global $adb;
		$instances = false;

		$query = "SELECT * FROM vtiger_customview WHERE entitytype=?";
		$queryParams = Array($moduleInstance->name);
		
		$result = $adb->pquery($query, $queryParams);
		for($index = 0; $index < $adb->num_rows($result); ++$index) {
			$instance = new self();
			$instance->initialize($adb->fetch_array($result), $moduleInstance);
			$instances[] = $instance;
		}
		return $instances;
	}

	/**
	 * Delete filter associated for module
	 * @param Vtiger_Module Instance of module
	 */
	static function deleteForModule($moduleInstance) {
		global $adb;

		$cvidres = $adb->pquery("SELECT cvid FROM vtiger_customview WHERE entitytype=?", Array($moduleInstance->name));
		if($adb->num_rows($cvidres)) {
			$cvids = Array();
			for($index = 0; $index < $adb->num_rows($cvidres); ++$index) {
				$cvids[] = $adb->query_result($cvidres, $index, 'cvid');
			}
			if(!empty($cvids)) {
				$adb->pquery("DELETE FROM vtiger_cvadvfilter WHERE cvid  IN (" . implode(',', $cvids) . ")", array());
				$adb->pquery("DELETE FROM vtiger_cvcolumnlist WHERE cvid IN (" . implode(',', $cvids) . ")", array());
				$adb->pquery("DELETE FROM vtiger_customview WHERE cvid   IN (" . implode(',', $cvids) . ")", array());
			}
		}
	}
}
