(function () {
    'use strict';

    // Add the CARTO Basemaps key restricted to building-engineering.de here.
    var apiKey = 'cb1_4pei_1_06b317f774434e167102ebad';

    window.TianMapTiles = {
        url: function (isDark) {
            var style = isDark ? 'dark_all' : 'light_all';
            return 'https://basemaps.cartocdn.com/rastertiles/' + style +
                '/{z}/{x}/{y}{r}.png?key=' + encodeURIComponent(apiKey);
        },
        attribution: '&copy; <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors, ' +
            '&copy; <a href="https://carto.com/attribution/">CARTO</a>'
    };
})();