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

    gatekeeper();
	action_gatekeeper();

    global $Dippler;

    $course_id = get_input('course_id');
    $group_id = get_input('group_id');
	$group_title = get_input('group_title');
	$group_desc = get_input('group_desc');
	$group_workspace = get_input('group_workspace');
	$group_members = get_input('group_members');
	
    $input_values['group_title'] = $group_title;
    $input_values['group_desc'] = $group_desc;
	$input_values['group_workspace'] = $group_workspace;
	$input_values['group_members'] = $group_members ? is_array($group_members) ? $group_members : array($group_members) : array();
    $_SESSION['input_values'] = $input_values;

	$group = new Coursegroup($group_id);
	$group->load();

	if ($group && $group->getType() == 'coursegroup') {
		if ($group->canEdit()) {
			$good_url = empty($group_workspace) ? true : check_url_exists($group_workspace);
		    if (!empty($group_title) && $good_url) {
    			$group->title = $group_title;
    			$group->description = $group_desc;
				$group->workspace = $group_workspace;
    			if (isset($group_members) && !empty($group_members)) {
    			    if (!is_array($group_members)) $group_members = array($group_members);
    			} else {
    			    $group_members = array();
    			}
    			$group->members = $group_members;
        		if (!$group->save()) {
        		    $Dippler->add_system_message(_("Group could not be saved."), 'error');
        			forward("course/groups/{$course_id}/group/{$group_id}/edit");
        		}
		    } else {
				if (!$good_url) $Dippler->add_system_message(_("Provided Workspace URL is not a working address."), 'error');
		        $Dippler->add_system_message(_("At least one of the parameters is empty."), 'error');
		        forward("course/groups/{$course_id}/group/{$group_id}/edit");
		    }
		} else {
		    $Dippler->add_system_message(_("Group could not be edited."), 'error');
		}

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

		// Clear cache
        $Dippler->clearSessionInputValues();
		forward($group->getURL());
	}

    forward();
?>