<?php
    require_once(dirname(dirname(__FILE__))."/engine/engine.php");

    gatekeeper();
	action_gatekeeper();

    global $Dippler;

    $id = get_input('id');
    $title = get_input('title');
    $description = get_input('description');
    $start = get_input('start');
    $end = get_input('end');
    $applyuntil = get_input("applyuntil");
	$provider = get_input("provider");
	$identifier = get_input("identifier");
	$credits = get_input("credits");
	$permission = get_input("permission");
	$enrollment_procedure = get_input("enrollment_procedure");
    $education_level = get_input("education_level");
    $language_of_instruction = get_input("language_of_instruction");
    $attendance_mode = get_input("attendance_mode");
    $objective = get_input("objective");
    $assessment = get_input("assessment");
    $prerequisite = get_input("prerequisite");
    $course_tag = get_input("course_tag");
    $image = get_input("image");
    $image_delete = get_input("course_image_delete", false);
    $status = get_input("status");

	$course = new Course($id);
	$course->load();

    if ($course && $course->getType() == 'course' && $course->canEdit()) {	
		$input_values = array();
		$input_values['title'] = $title;
		$input_values['description'] = $description;
		$input_values['start'] = $start;
		$input_values['end'] = $end;
		$input_values['applyuntil'] = $applyuntil;
		$input_values['provider'] = $provider;
	    $input_values['identifier'] = $identifier;
		$input_values['credits'] = $credits;
		$input_values['permission'] = $permission;
		$input_values['enrollment_procedure'] = $enrollment_procedure;
    	$input_values['education_level'] = $education_level;
    	$input_values['language_of_instruction'] = $language_of_instruction;
    	$input_values['attendance_mode'] = $attendance_mode;
    	$input_values['objective'] = $objective;
    	$input_values['assessment'] = $assessment;
   	    $input_values['prerequisite'] = $prerequisite;
    	$input_values['course_tag'] = $course_tag;
    	$input_values['image'] = $image;
    	$input_values['status'] = $status;
		$_SESSION['input_values'] = $input_values;

		if (empty($title) || empty($start) || empty($end)) {
			$Dippler->add_system_message(_("At least one of the parameters is empty."), 'error');
			forward("course/info/{$id}/edit");
		} else {
			if (!check_credits($credits)) {
				$Dippler->add_system_message(_("Credits has to be a numeric value."), 'error');
				forward("course/info/{$id}/edit");
			}
			$course->title = $title;
			$course->description = $description;
			$course->start = date_into_timestamp($start);
			$course->end = date_into_timestamp($end);
			$course->applyuntil = date_into_timestamp($applyuntil);
			$course->provider = $provider;
      	    $course->identifier = $identifier;
      		$course->credits = $credits;
      		$course->permission = $permission;
      		$course->enrollment_procedure = $enrollment_procedure;
          	$course->education_level = $education_level;
          	$course->language_of_instruction = $language_of_instruction;
          	$course->attendance_mode = $attendance_mode;
          	$course->objective = $objective;
          	$course->assessment = $assessment;
         	$course->prerequisite = $prerequisite;
          	$course->course_tag = $course_tag;
          	if ($image_delete) $course->course_image_delete = 1;
          	if (isset($_FILES['course_image'])) {
          	    $course->setImageFile($_FILES['course_image']);
          	}
          	$course->status = $status;

			if (!$course->save()) {
				$Dippler->add_system_message(_("Course could not be saved."), 'error');
				forward("course/info/{$id}/edit");
			}

			$Dippler->add_system_message(_("Course saved."));

            // Clear cache
            $Dippler->clearSessionInputValues();
			forward($course->getURL("info"));
		}
	}

    // Clear cahce
    $Dippler->clearSessionInputValues();
    
    forward("");
?>