#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_pie extends plugin_base{

function init(){
		$this->fullname = get_string('pie','block_configurable_reports');
		$this->form = true;
		$this->ordering = true;
		$this->reporttypes = array('courses','sql','users','timeline', 'categories');
	}

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

// data -> Plugin configuration data
	function execute($id, $data, $finalreport){
		global $DB, $CFG;

$series = array();
		if($finalreport){
			foreach($finalreport as $r){
				if($data->areaname == $data->areavalue){
					$hash = md5(strtolower($r[$data->areaname]));
					if(isset($series[0][$hash])){
						$series[1][$hash] += 1;
					}
					else{
						$series[0][$hash] = str_replace(',','',$r[$data->areaname]);
						$series[1][$hash] = 1;
					}

}else if(!isset($data->group) || ! $data->group){
					$series[0][] = str_replace(',','',$r[$data->areaname]);
					$series[1][] = (isset($r[$data->areavalue]) && is_numeric($r[$data->areavalue]))? $r[$data->areavalue] : 0;
				}else{
					$hash = md5(strtolower($r[$data->areaname]));
					if(isset($series[0][$hash])){
						$series[1][$hash] += (isset($r[$data->areavalue]) && is_numeric($r[$data->areavalue]))? $r[$data->areavalue] : 0;
					}
					else{
						$series[0][$hash] = str_replace(',','',$r[$data->areaname]);
						$series[1][$hash] = (isset($r[$data->areavalue]) && is_numeric($r[$data->areavalue]))? $r[$data->areavalue] : 0;
					}
				}
			}
		}

$serie0 = base64_encode(strip_tags(implode(',',$series[0])));
		$serie1 = base64_encode(implode(',',$series[1]));

return $CFG->wwwroot.'/blocks/configurable_reports/components/plot/pie/graph.php?reportid='.$this->report->id.'&id='.$id.'&serie0='.$serie0.'&serie1='.$serie1;
	}

function get_series($data){
		$serie0 = required_param('serie0',PARAM_RAW);
		$serie1 = required_param('serie1',PARAM_RAW);

return array(explode(',',base64_decode($serie0)),explode(',',base64_decode($serie1)));
	}

}