#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
  */

class report_timeline extends report_base{
	
	function init(){
		$this->components = array('timeline','columns','filters','template','permissions','calcs','plot');
	}

function get_all_elements(){
		$elements = array();
		
		$components = cr_unserialize($this->config->components);
		
		$config = (isset($components['timeline']['config']))? $components['timeline']['config'] : new stdclass();
				
		if(isset($config->timemode)){
			
			$daysecs = 60 * 60 * 24;
		
			if($config->timemode == 'previous'){
				$config->starttime = gmmktime() - $config->previousstart * $daysecs;				
				$config->endtime = gmmktime() - $config->previousend * $daysecs;
				if(isset($config->forcemidnight)){
					$config->starttime = usergetmidnight($config->starttime);
					$config->endtime = usergetmidnight($config->endtime) + ($daysecs - 1);
				}				
			}

$filter_starttime = optional_param('filter_starttime',0,PARAM_RAW);
			$filter_endtime = optional_param('filter_endtime',0,PARAM_RAW);
	
			if($filter_starttime and $filter_endtime){
				$filter_starttime = make_timestamp($filter_starttime['year'],$filter_starttime['month'],$filter_starttime['day']);
				$filter_endtime = make_timestamp($filter_endtime['year'],$filter_endtime['month'],$filter_endtime['day']);
				
				$config->starttime = usergetmidnight($filter_starttime);
				$config->endtime = usergetmidnight($filter_endtime) + 24*60*60;
			
			}
					
			
			for($i=$config->starttime; $i<$config->endtime; $i += $config->interval * $daysecs){
				$row = new stdclass();
				$row->id = $i;
				$row->starttime = $i;
				$row->endtime = $row->starttime + ($config->interval * $daysecs -1);
				if($row->endtime > $config->endtime)
					$row->endtime = $config->endtime;
				$this->timeline[$row->starttime] = $row;
				$elements[] = $row->starttime;
			}
			
			if($config->ordering == 'desc')				
				rsort($elements);			
		}
				
		return $elements;
	}
	
	function get_rows($elements, $sqlorder = ''){
		global $DB, $CFG;		
				
		if(!empty($elements)){
			$finaltimeline = array();
			foreach($elements as $e){
				$finaltimeline[] = $this->timeline[$e];
			}			
			return $finaltimeline;
		}	
		else{
			return array();
		}
	}
	
}