// Mapy.CZ:
const API_KEY = 'Uw8gm6JPZpnT3GfNnh8adARpQI-WBGy6QaY9g6VhD74';
var mapyCZ = L.tileLayer(`https://api.mapy.cz/v1/maptiles/basic/256/{z}/{x}/{y}?apikey=${API_KEY}`, {
    minZoom: 0,
    maxZoom: 19,
    attribution: '<a href="https://api.mapy.cz/copyright" target="_blank">&copy; Seznam.cz a.s. a další</a>',
})
var mapyCZletecka = L.tileLayer(`https://api.mapy.cz/v1/maptiles/aerial/256/{z}/{x}/{y}?apikey=${API_KEY}`, {
    minZoom: 0,
    maxZoom: 19,
    attribution: '<a href="https://api.mapy.cz/copyright" target="_blank">&copy; Seznam.cz a.s. a další</a>',
})
// OpenStreetMap - base:
var osm = L.tileLayer('https://tile.openstreetmap.org/{z}/{x}/{y}.png', {
    maxZoom: 19,
    attribution: '&copy; <a href="http://www.openstreetmap.org/copyright">OpenStreetMap</a>'
})
 
// Výchozí bod + podkladové mapy:
var map = L.map('map', {
    center: [50.853501146, 14.8425], // Hrádek
    zoom: 16,
    layers: [mapyCZ, mapyCZletecka, osm]
});

// Rámeček s výběrem podkladů:
var baseMaps = {
    "<span style='color: blue'>Mapy.cz</span>": mapyCZ,
    "Mapy.cz (letecká)": mapyCZletecka,
    "OpenStreetMap": osm
};
var layerControl = L.control.layers(baseMaps).addTo(map);

/*
We also require you to include our logo somewhere over the map.
We create our own map control implementing a documented interface,
that shows a clickable logo.
See https://leafletjs.com/reference.html#control
*/
const LogoControl = L.Control.extend({
    options: {
        position: 'bottomleft',
    },

    onAdd: function (map) {
        const container = L.DomUtil.create('div');
        const link = L.DomUtil.create('a', '', container);

        link.setAttribute('href', 'http://mapy.cz/');
        link.setAttribute('target', '_blank');
        link.innerHTML = '<img src="https://api.mapy.cz/img/api/logo.svg" />';
        L.DomEvent.disableClickPropagation(link);

        return container;
    },
});
// finally we add our LogoControl to the map
new LogoControl().addTo(map, {
    layers: [mapyCZ, mapyCZletecka]
});

// futury:
function onEachFeature(feature, layer) {
    // does this feature have a property named popupContent?
    if (feature.properties && feature.properties.number) {
        layer.bindPopup("Obvod č. "+feature.properties.number.toString());
    }
    layer.on({
        mouseover: highlightFeature,
        mouseout: resetHighlight,
        click: zoomToFeature
    });
}

// futury - interakce:
function style(feature) {
    return {
        fillColor: '#FD8D3C',
        weight: 2,
        opacity: 1,
        color: 'blue',
        dashArray: '3',
        fillOpacity: 0.05
    };
}


function highlightFeature(e) {
    var layer = e.target;

    layer.setStyle({
        weight: 5,
        color: '#666',
        dashArray: '',
        fillOpacity: 0.2
    });

    layer.bringToFront();
}

function resetHighlight(e) {
    geojson.resetStyle(e.target);
}

function zoomToFeature(e) {
    map.fitBounds(e.target.getBounds());
}