chamilo-lms/main/mySpace/coaches.php

<?php

/*
 * Created on 18 October 2006 by Elixir Interactive http://www.elixir-interactive.com
 */

ob_start(); 

// name of the language file that needs to be included 
$language_file = array ('registration', 'index', 'tracking', 'admin');
$cidReset = true;
require '../inc/global.inc.php';

$this_section = "session_my_space";

$nameTools = get_lang('Tutors');

api_block_anonymous_users();
$interbreadcrumb[] = array ("url" => "index.php", "name" => get_lang('MySpace'));

if(isset($_GET["id_student"])){
	$interbreadcrumb[] = array ("url" => "student.php", "name" => get_lang('Students'));
}

Display :: display_header($nameTools);

api_display_tool_title($nameTools);

// Database Table Definitions
$tbl_course 						= Database :: get_main_table(TABLE_MAIN_COURSE);
$tbl_course_user 					= Database :: get_main_table(TABLE_MAIN_COURSE_USER);
$tbl_user 							= Database :: get_main_table(TABLE_MAIN_USER);
$tbl_session 						= Database :: get_main_table(TABLE_MAIN_SESSION);
$tbl_session_rel_course 			= Database :: get_main_table(TABLE_MAIN_SESSION_COURSE);
$tbl_session_rel_course_rel_user 	= Database :: get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
$tbl_session_rel_user 				= Database :: get_main_table(TABLE_MAIN_SESSION_USER);
$tbl_track_login 					= Database :: get_statistic_table(TABLE_STATISTIC_TRACK_E_LOGIN);


/*
 ===============================================================================
 	FUNCTION
 ===============================================================================  
 */
 
function exportCsv($a_header, $a_data) {
	global $archiveDirName;

	$fileName = 'coaches.csv';
	$archivePath = api_get_path(SYS_ARCHIVE_PATH);
	$archiveURL = api_get_path(WEB_CODE_PATH).'course_info/download.php?archive=';

	if (!$open = fopen($archivePath.$fileName, 'w+')) {
		$message = get_lang('noOpen');
	} else {
		$info = '';

		foreach ($a_header as $header) {
			$info .= $header.';';
		}
		$info .= "\r\n";

		foreach ($a_data as $data) {
			foreach ($data as $infos) {
				$info .= $infos.';';
			}
			$info .= "\r\n";
		}

		fwrite($open, $info);
		fclose($open);
		$perm = api_get_setting('permissions_for_new_files');
		$perm = octdec(!empty($perm) ? $perm : '0660');
		chmod($fileName, $perm);

		header("Location:".$archiveURL.$fileName);
	}
	return $message;
}
 
function calculHours($seconds) {
	//combien d'heures ?
	$hours = floor($seconds / 3600);

	//combien de minutes ?
	$min = floor(($seconds - ($hours * 3600)) / 60);
	if ($min < 10) {
		$min = "0".$min;
	}

	//combien de secondes
	$sec = $seconds - ($hours * 3600) - ($min * 60);
	if ($sec < 10) {
		$sec = "0".$sec;
	}

	//echo $hours."h".$min."m".$sec."s";
	return $hours."h".$min."m".$sec."s" ;
}

function is_coach() {
  	global $tbl_session_course;
	$sql = "SELECT course_code FROM $tbl_session_course WHERE id_coach='".$_SESSION["_uid"]."'";
	$result = Database::query($sql, __FILE__, __LINE__);
	if (Database::num_rows($result) > 0) {
		return true;	    
	}	else {
		return false;
	}
}


/**
 * MAIN PART
 */

if (isset($_POST['export'])) {
	$order_clause = api_is_western_name_order(PERSON_NAME_DATA_EXPORT) ? ' ORDER BY firstname, lastname' : ' ORDER BY lastname, firstname';
} else {
	$order_clause = api_sort_by_first_name() ? ' ORDER BY firstname, lastname' : ' ORDER BY lastname, firstname';
}
if (isset($_GET["id_student"])) {
	$i_id_student=$_GET["id_student"];
	$sqlCoachs = "SELECT DISTINCT src.id_coach " .
		"FROM $tbl_session_rel_course as src, $tbl_session_rel_course_rel_user as srcru " .
		"WHERE src.id_coach<>'0' AND src.course_code=srcru.course_code AND srcru.id_user='$i_id_student' AND srcru.id_session=src.id_session";
} else {
	if (api_is_platform_admin()) {
		$sqlCoachs = "SELECT DISTINCT id_coach, user_id, lastname, firstname
			FROM $tbl_user, $tbl_session_rel_course
			WHERE id_coach=user_id".$order_clause;
	} else {
		$sqlCoachs = "SELECT DISTINCT id_coach, $tbl_user.user_id, lastname, firstname
			FROM $tbl_user as user, $tbl_session_rel_course as session_rel_course, $tbl_course_user as course_rel_user  
			WHERE course_rel_user.course_code=session_rel_course.course_code AND course_rel_user.status='1' AND course_rel_user.user_id='".$_SESSION["_uid"]."' 
			AND session_rel_course.id_coach=user.user_id".$order_clause;
	}
}
$resultCoachs = Database::query($sqlCoachs, __FILE__, __LINE__);

if (api_is_western_name_order()) {
	echo '<table class="data_table"><tr><th>'.get_lang('FirstName').'</th><th>'.get_lang('LastName').'</th><th>'.get_lang('ConnectionTime').'</th><th>'.get_lang('AdminCourses').'</th><th>'.get_lang('Students').'</th></tr>';
} else {
	echo '<table class="data_table"><tr><th>'.get_lang('LastName').'</th><th>'.get_lang('FirstName').'</th><th>'.get_lang('ConnectionTime').'</th><th>'.get_lang('AdminCourses').'</th><th>'.get_lang('Students').'</th></tr>';
}

if (api_is_western_name_order(PERSON_NAME_DATA_EXPORT)) {
	$a_header[] = get_lang('FirstName');
	$a_header[] = get_lang('LastName');
	$a_header[] = get_lang('ConnectionTime');
} else {
	$a_header[] = get_lang('LastName');
	$a_header[] = get_lang('FirstName');
	$a_header[] = get_lang('ConnectionTime');
}

if (Database::num_rows($resultCoachs) > 0) {
	while ($a_coachs = Database::fetch_array($resultCoachs)) {
		$i_id_coach=$a_coachs["id_coach"];

		if (isset($_GET["id_student"])) {
			$sql_infos_coach = "SELECT lastname, firstname FROM $tbl_user WHERE user_id='$i_id_coach'";
			$resultCoachsInfos = Database::query($sql_infos_coach, __FILE__, __LINE__);
			$s_lastname = Database::result($resultCoachsInfos, 0, "lastname");
			$s_firstname = Database::result($resultCoachsInfos, 0, "firstname");
		} else {
			$s_lastname = $a_coachs["lastname"];
			$s_firstname = $a_coachs["firstname"];
		}

		$s_sql_connection_time = "SELECT login_date, logout_date FROM $tbl_track_login WHERE login_user_id ='$i_id_coach' AND logout_date <> 'null'";
		$q_result_connection_time = Database::query($s_sql_connection_time, __FILE__, __LINE__);

		$i_nb_seconds = 0;
		while($a_connections = Database::fetch_array($q_result_connection_time)) {
			$s_login_date = $a_connections["login_date"];
			$s_logout_date = $a_connections["logout_date"];
			$i_timestamp_login_date = strtotime($s_login_date);
			$i_timestamp_logout_date = strtotime($s_logout_date);
			$i_nb_seconds += ($i_timestamp_logout_date - $i_timestamp_login_date);
		}

		$s_connection_time = calculHours($i_nb_seconds);
		if ($s_connection_time == "0h00m00s") {
			$s_connection_time = "";
		}

		if ($i%2 == 0) {
			$s_css_class = "row_odd";
			if ($i%20 == 0 && $i != 0) {
				if (api_is_western_name_order()) {
					echo '<tr><th>'.get_lang('FirstName').'</th><th>'.get_lang('LastName').'</th><th>'.get_lang('ConnectionTime').'</th><th>'.get_lang('AdminCourses').'</th><th>'.get_lang('Students').'</th></tr>';
				} else {
					echo '<tr><th>'.get_lang('LastName').'</th><th>'.get_lang('FirstName').'</th><th>'.get_lang('ConnectionTime').'</th><th>'.get_lang('AdminCourses').'</th><th>'.get_lang('Students').'</th></tr>';
				}
			}
		} else {
			$s_css_class = "row_even";
		}

		$i++;

		if (api_is_western_name_order()) {
			echo '<tr class="'.$s_css_class.'"><td>'.$s_firstname.'</td><td>'.$s_lastname.'</td><td>'.$s_connection_time.'</td><td><a href="course.php?type=coach&user_id='.$i_id_coach.'"><img src="'.api_get_path(WEB_IMG_PATH).'2rightarrow.gif" border="0" /></a></td><td><a href="student.php?type=coach&user_id='.$i_id_coach.'"><img src="'.api_get_path(WEB_IMG_PATH).'2rightarrow.gif" border="0" /></a></td></tr>';
		} else {
			echo '<tr class="'.$s_css_class.'"><td>'.$s_lastname.'</td><td>'.$s_firstname.'</td><td>'.$s_connection_time.'</td><td><a href="course.php?type=coach&user_id='.$i_id_coach.'"><img src="'.api_get_path(WEB_IMG_PATH).'2rightarrow.gif" border="0" /></a></td><td><a href="student.php?type=coach&user_id='.$i_id_coach.'"><img src="'.api_get_path(WEB_IMG_PATH).'2rightarrow.gif" border="0" /></a></td></tr>';
		}

		if (api_is_western_name_order(PERSON_NAME_DATA_EXPORT)) {
			$a_data[$i_id_coach]["firstname"] = $s_firstname;
			$a_data[$i_id_coach]["lastname"] = $s_lastname;
			$a_data[$i_id_coach]["connection_time"] = $s_connection_time;
		} else {
			$a_data[$i_id_coach]["lastname"] = $s_lastname;
			$a_data[$i_id_coach]["firstname"] = $s_firstname;
			$a_data[$i_id_coach]["connection_time"] = $s_connection_time;
		}
	}
}

//No results
else {	
	echo '<tr><td colspan="5" "align=center">'.get_lang("NoResult").'</td></tr>';
}
echo '</table>';

if (isset($_POST['export'])){
	exportCsv($a_header, $a_data);
}

echo "<br /><br />";
echo "<form method='post' action='coaches.php'><button type='submit' class='save' name='export' value='".get_lang('exportExcel')."'>".get_lang('exportExcel')."</button><form>";

/*
==============================================================================
	FOOTER
==============================================================================
*/

Display::display_footer();