<?php
/* For licensing terms, see /license.txt */
/**
 * Implements the edition of course-session settings
 * @package chamilo.admin
 */
// name of the language file that needs to be included
$language_file = 'admin';
$cidReset = true;

require_once '../inc/global.inc.php';

$id_session = intval($_GET['id_session']);
SessionManager::protect_session_edit($id_session);
$course_code = $_GET['course_code'];

$formSent=0;
$errorMsg='';

// Database Table Definitions
$tbl_user			= Database::get_main_table(TABLE_MAIN_USER);
$tbl_course			= Database::get_main_table(TABLE_MAIN_COURSE);
$tbl_session		= Database::get_main_table(TABLE_MAIN_SESSION);
$tbl_session_course	= Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
$tbl_session_rel_course_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);

$course_info = api_get_course_info($_REQUEST['course_code']);
$tool_name = $course_info['name'];

$result = Database::query("SELECT s.name, c.title FROM $tbl_session_course sc,$tbl_session s,$tbl_course c
WHERE sc.id_session=s.id AND sc.course_code=c.code AND sc
.id_session='$id_session' AND sc.course_code='".Database::escape_string($course_code)."'");

if (!list($session_name,$course_title)=Database::fetch_row($result)) {
	header('Location: session_course_list.php?id_session='.$id_session);
	exit();
}

$interbreadcrumb[]=array('url' => 'index.php',"name" => get_lang('PlatformAdmin'));
$interbreadcrumb[]=array('url' => "session_list.php","name" => get_lang("SessionList"));
$interbreadcrumb[]=array('url' => "resume_session.php?id_session=".$id_session,"name" => get_lang('SessionOverview'));
$interbreadcrumb[]=array('url' => "session_course_list.php?id_session=$id_session","name" =>api_htmlentities($session_name,ENT_QUOTES,$charset));

$arr_infos = array();
if (isset($_POST['formSent']) && $_POST['formSent']) {
	$formSent=1;

	// get all tutor by course_code in the session
	$sql = "SELECT id_user FROM $tbl_session_rel_course_rel_user
	        WHERE id_session = '$id_session' AND course_code = '".Database::escape_string($course_code)."' AND status = 2";
	$rs_coachs = Database::query($sql);

	$coachs_course_session = array();
	if (Database::num_rows($rs_coachs) > 0){
		while ($row_coachs = Database::fetch_row($rs_coachs)) {
			$coachs_course_session[] = $row_coachs[0];
		}
	}

	$id_coachs= $_POST['id_coach'];

	if (is_array($id_coachs) && count($id_coachs) > 0) {

		foreach ($id_coachs as $id_coach) {
			$id_coach = intval($id_coach);
			$rs1 = SessionManager::set_coach_to_course_session($id_coach, $id_session, $course_code);
		}

		// set status to 0 other tutors from multiple list
		$array_intersect = array_diff($coachs_course_session,$id_coachs);

		foreach ($array_intersect as $nocoach_user_id) {
			$rs2 = SessionManager::set_coach_to_course_session(
				$nocoach_user_id,
				$id_session,
				$course_code,
				true
			);
		}

		header('Location: '.Security::remove_XSS($_GET['page']).'?id_session='.$id_session);
		exit();

	}
} else {
	$sql = "SELECT id_user FROM $tbl_session_rel_course_rel_user
	        WHERE id_session = '$id_session' AND course_code = '".Database::escape_string($course_code)."' AND status = 2 ";
	$rs = Database::query($sql);

	if (Database::num_rows($rs) > 0) {
		while ($infos = Database::fetch_array($rs)) {
			$arr_infos[] = $infos['id_user'];
		}
	}
}

$order_clause = api_sort_by_first_name() ? ' ORDER BY firstname, lastname, username' : ' ORDER BY lastname, firstname, username';
global $_configuration;
if ($_configuration['multiple_access_urls']) {
    $tbl_access_rel_user= Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_USER);
    $access_url_id = api_get_current_access_url_id();
    $sql="SELECT u.user_id,lastname,firstname,username
        FROM $tbl_user u LEFT JOIN $tbl_access_rel_user  a ON(u.user_id= a.user_id)
        WHERE status='1' AND active = 1 AND access_url_id = $access_url_id ".$order_clause;
} else {
    $sql="SELECT user_id,lastname,firstname,username
    FROM $tbl_user
    WHERE status='1' AND active = 1 ".$order_clause;
}

$result = Database::query($sql);
$coaches = Database::store_result($result);
Display::display_header($tool_name);

$tool_name = get_lang('ModifySessionCourse');
api_display_tool_title($tool_name);
?>
<form method="post" action="<?php echo api_get_self(); ?>?id_session=<?php echo $id_session; ?>&course_code=<?php echo urlencode($course_code); ?>&page=<?php echo Security::remove_XSS($_GET['page']) ?>" style="margin:0px;">
<input type="hidden" name="formSent" value="1">
<table border="0" cellpadding="5" cellspacing="0" width="600px">
<?php
if(!empty($errorMsg)) {
?>
<tr>
  <td colspan="2">
<?php
	Display::display_normal_message($errorMsg);
?>
  </td>
</tr>
<?php
}
?>

<tr>
  <td width="25%" valign = "top"><?php echo get_lang("CoachName") ?>&nbsp;&nbsp;</td>
  <td width="70%">
    <select name="id_coach[]" style="width:450px;" multiple="multiple" size="7">
	    <option value="0">----- <?php echo get_lang("Choose") ?> -----</option>
	    <option value="0" <?php if(count($arr_infos) == 0) echo 'selected="selected"'; ?>>
            <?php echo get_lang('None') ?>
        </option>
<?php
foreach($coaches as $enreg) {
?>
<option value="<?php echo $enreg['user_id']; ?>" <?php if(((is_array($arr_infos) && in_array($enreg['user_id'], $arr_infos)))) echo 'selected="selected"'; ?>>
    <?php echo api_get_person_name($enreg['firstname'], $enreg['lastname']).' ('.$enreg['username'].')'; ?>
</option>
<?php
}
unset($coaches);
?>
  </select>
    </td>
</tr>
<tr>
  <td>&nbsp;</td>
  <td>
      <button class="save" type="submit" name="name" value="<?php echo get_lang('AssignCoach') ?>">
          <?php echo get_lang('AssignCoach') ?>
      </button>
</td>
</tr>
</table>
</form>
<?php
Display::display_footer();