/lenasys/trunk

<?php

	class Stats extends CI_Model {

		function __construct() {

			parent::__construct();

			$this->load->library('user_agent');

		}

		/*

		 *	This function returns an array with user stats.

		 */ 

		public function getUserStats() {

			//Dummy-array to be filled

			$userStats = array(

				'agentType' => '[unknown]',

				'agentName' => '[unknown]',

				'agentVersion' => '[unknown]',

				'agentPlatform' => '[unknown]',

				'agentString' => '[unknown]'	

			);

			//If user is using a web browser

			if($this->agent->is_browser()) {

				$userStats['agentType'] = 'Desktop';

				$userStats['agentName'] = $this->agent->browser();

				$userStats['agentVersion'] = $this->agent->version();

			}

			//If user is using a mobile browser

			elseif ($this->agent->is_mobile()) {

				$userStats['agentType'] = 'Mobile';

				$userStats['agentName'] = $this->agent->mobile();

			}

			//If user is a robot

			elseif ($this->agent->is_robot()) {

				$userStats['agentType'] = 'Robot';

				$userStats['agentName'] = $this->agent->robot();

			}

			//Common stats

			$userStats['agentPlatform'] = $this->agent->platform();

			$userStats['agentString'] = $this->agent->agent_string();

			//Return result

			return $userStats;

		}

		/*

		 *	This function returns an array with system stats.

		 */ 		

		public function getSystemStats() {

			//Dummy-array to be filled

			$systemStats = array(

				'courseAmount' => '[unknown]',

				'exampleAmount' => '[unknown]',

				'quizAmount' => '[unknown]'	

			);

			//Get amount of courses

			$systemStats['courseAmount'] = $this->db->count_all('Courses');

			//Get amount of examples

			$systemStats['exampleAmount'] = $this->db->count_all('Examples');

			//Get amount of quizzes

			$systemStats['quizAmount'] = $this->db->count_all('Quizzes');

			//Return result

			return $systemStats;

		}

		/*

		 *	This function returns an array with course stats.

		 */ 

		public function getCourseStats($courseID) {

			//Dummy-array to be filled

			$courseStats = array(

				'exampleAmount' => '[unknown]',

				'quizAmount' => '[unknown]'	

			);

			$this->db->where('courseID', $courseID);

			$this->db->from('Examples');

			$courseStats['exampleAmount'] = $this->db->count_all_results();

			$this->db->where('courseID', $courseID);

			$this->db->from('Quizzes');

			$courseStats['quizAmount'] = $this->db->count_all_results();

			//Return result

			return $courseStats;	

		}

	}

?>