/**
  * Display the main page of the permission settings
  */
 public function index()
 {
     $permissionGroups = Permission::getAllGroupByPlugin();
     $example = isset($this->roleId) ? array('roleId' => $this->roleId) : array();
     $data = RolePermission::getListByExample(new DBExample($example));
     $values = array();
     foreach ($data as $value) {
         $values[$value->permissionId][$value->roleId] = $value->value;
     }
     $roles = isset($this->roleId) ? array(Role::getById($this->roleId)) : Role::getAll(null, array(), array(), true);
     $param = array('id' => 'permissions-form', 'fieldsets' => array('form' => array(), '_submits' => array(new SubmitInput(array('name' => 'valid', 'value' => Lang::get('main.valid-button'))))));
     foreach ($roles as $role) {
         foreach ($permissionGroups as $group => $permissions) {
             if (Plugin::get($group)) {
                 foreach ($permissions as $permission) {
                     if ($role->id == Role::ADMIN_ROLE_ID) {
                         $default = 1;
                     } elseif (isset($values[$permission->id][$role->id])) {
                         $default = $values[$permission->id][$role->id];
                     } else {
                         $default = 0;
                     }
                     $param['fieldsets']['form'][] = new CheckboxInput(array('name' => "permission-{$permission->id}-{$role->id}", 'disabled' => $role->id == Role::ADMIN_ROLE_ID || $role->id == Role::GUEST_ROLE_ID && !$permission->availableForGuests, 'default' => $default, 'class' => $permission->id == Permission::ALL_PRIVILEGES_ID ? 'select-all' : '', 'nl' => false));
                 }
             }
         }
     }
     $form = new Form($param);
     if (!$form->submitted()) {
         $page = View::make(Plugin::current()->getView("permissions.tpl"), array('permissions' => $permissionGroups, 'fields' => $form->inputs, 'roles' => $roles));
         return NoSidebarTab::make(array('icon' => 'unlock-alt', 'title' => Lang::get('permissions.page-title'), 'page' => $form->wrap($page)));
     } else {
         try {
             foreach ($form->inputs as $name => $field) {
                 if (preg_match('/^permission\\-(\\d+)\\-(\\d+)$/', $name, $match)) {
                     $permissionId = $match[1];
                     $roleId = $match[2];
                     $value = App::request()->getBody($name) ? 1 : 0;
                     if ($roleId != Role::ADMIN_ROLE_ID && !($roleId == Role::GUEST_ROLE_ID && !$permission->availableForGuests)) {
                         $permission = new RolePermission();
                         $permission->set(array('roleId' => $roleId, 'permissionId' => $permissionId, 'value' => $value));
                         $permission->save();
                     }
                 }
             }
             App::logger()->info('Permissions were succesfully updated');
             return $form->response(Form::STATUS_SUCCESS, Lang::get("roles.permissions-update-success"));
         } catch (Exception $e) {
             App::logger()->error('An error occured while updating permissions');
             return $form->response(Form::STATUS_ERROR, DEBUG_MODE ? $e->getMessage() : Lang::get("roles.permissions-update-error"));
         }
     }
 }