import {module} from '../module';
import {kebabToCamel} from '../lib/string';

/**
 * Registers the element controller into its scope as a
 * property whose name is the directive value.
 */
export function directive() {
    return {
        restrict: 'A',
        link: function($scope, $element, $attrs) {
            let id = kebabToCamel($attrs.vnId);
            let controller = $element.controller($element[0].tagName.toLowerCase());

            if (!id)
                throw new Error(`vnId: Attribute can't be null`);
            if (!controller)
                throw new Error(`vnId: Can't find controller for element '${id}'`);

            $scope[id] = controller;
        }
    };
}
module.directive('vnId', directive);