#Gocha#

<?php

// This file is part of Moodle - http://moodle.org/
//
// Moodle 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.
//
// Moodle 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 Moodle.  If not, see <http://www.gnu.org/licenses/>.

/** Configurable Reports
  * A Moodle block for creating customizable reports
  * @package blocks
  * @author: Juan leyva <http://www.twitter.com/jleyvadelgado>
  * @date: 2009
  */

require_once($CFG->dirroot.'/blocks/configurable_reports/plugin.class.php');

class plugin_groups extends plugin_base{

function init(){
		$this->form = false;
		$this->unique = true;
		$this->fullname = get_string('filtergroups','block_configurable_reports');
		$this->reporttypes = array('groups','sql');
	}

function summary($data){
		return get_string('filtergroups_summary','block_configurable_reports');
	}

function execute($finalelements, $data){

$filter_groups = optional_param('filter_groups',0,PARAM_INT);
                
		if(!$filter_groups)
			return $finalelements;

if($this->report->type != 'sql'){
				return array($filter_groups);
		}
		else{
			if(preg_match("/%%FILTER_GROUPS:([^%]+)%%/i",$finalelements, $output)){
				$replace = ' AND '.$output[1].' = '.$filter_groups;
				return str_replace('%%FILTER_GROUPS:'.$output[1].'%%',$replace,$finalelements);
			}
		}
                echo $replace;
		return $finalelements;
	}

function print_filter(&$mform){
		global $remotedb, $CFG;

$filter_groups = optional_param('filter_groups',0,PARAM_INT);

$reportclassname = 'report_'.$this->report->type;
		$reportclass = new $reportclassname($this->report);
                $courseid     = optional_param('courseid', 0, PARAM_INT);
                
		if($this->report->type != 'sql'){
                        
			$components = cr_unserialize($this->report->components);
			$conditions = $components['conditions'];

$groupslist = $reportclass->elements_by_conditions($conditions);
		}
		else{
			$groupslist = array_keys($remotedb->get_records('groups'));
		}

$groupsoptions = array();
		$groupsoptions[0] = get_string('filter_all', 'block_configurable_reports');

if(!empty($groupslist)){
			list($usql, $params) = $remotedb->get_in_or_equal($groupslist);
			$groups = $remotedb->get_records_select('groups',"id $usql",$params,'name');
                        
			foreach($groups as $c){
                            if($c->courseid == $courseid){
                                $groupsoptions[$c->id] = $c->name;
                            }
			}
		}

$mform->addElement('select', 'filter_groups', 'Turma', $groupsoptions);
		$mform->setType('filter_groups', PARAM_INT);

}