Naimikan/angular-mapboxgl-directive

angular.module('mapboxgl-directive').directive('glMinZoom', [function () {
    function mapboxGlMinZoomDirectiveLink (scope, element, attrs, controller) {
        if (!controller) {
            throw new Error('Invalid angular-mapboxgl-directive controller');
        }

        var mapboxglScope = controller.getMapboxGlScope();

        controller.getMap().then(function (map) {
            mapboxglScope.$watch('glMinZoom', function (minZoom) {
                if (angular.isNumber(minZoom) && (minZoom >= 0 || minZoom <= 20)) {
                    map.setMinZoom(minZoom);
                } else {
                    throw new Error('Invalid min zoom');
                }
            }, true);
        });
    }

    var directive = {
        restrict: 'A',
        scope: false,
        replace: false,
        require: '?^mapboxgl',
        link: mapboxGlMinZoomDirectiveLink
    };

    return directive;
}]);