// Projection fix from: https://gis.stackexchange.com/questions/200865/leaflet-crs-simple-custom-scale
var factorx = 1 / 256 * 4;
var factory = factorx;
var originx = 7000;
var originy = 7000;
var zoom_level_real = 6;

L.CRS.pr = L.extend({}, L.CRS.Simple, {
	projection: L.Projection.LonLat,
	transformation: new L.Transformation(factorx,factorx * originx,-factory,factory * originy),

	scale: function(zoom) {
		return Math.pow(2, zoom);
	},

	zoom: function(scale) {
		return Math.log(scale) / Math.LN2;
	},

	distance: function(latlng1, latlng2) {
		var dx = latlng2.lng - latlng1.lng
		  , dy = latlng2.lat - latlng1.lat;

		return Math.sqrt(dx * dx + dy * dy);
	},
	infinite: true
});

// Init map
var mymap = L.map('mapid', {
	crs: L.CRS.pr
}).setView([0, 0], 6);

var mapheight = 16384;
var mapwidth = mapheight;
var sw = mymap.unproject([0, 0], zoom_level_real);
var ne = mymap.unproject([mapwidth, mapheight], zoom_level_real);
var layerbounds = new L.LatLngBounds(sw,ne);

var layers = L.control.layers({}, {}).addTo(mymap);

function load_svg(name, url, active=1) {
	var xhttp_ps = new XMLHttpRequest();
	xhttp_ps.onreadystatechange = function() {
		if (this.readyState == 4) {
			if (this.status == 200) {
				var svgElement = document.createElementNS("http://www.w3.org/2000/svg", "svg");
				svgElement.setAttribute('xmlns', "http://www.w3.org/2000/svg");
				svgElement.setAttribute('viewBox', "0 0 16384 16384");
				svgElement.innerHTML = xhttp_ps.responseText;
				var svgElementBounds = [[0, 0], [1000, 1000]];
				var overlay = L.svgOverlay(svgElement, svgElementBounds);
				layers.addOverlay(overlay, name);
				if (active)
					overlay.addTo(mymap);
				return overlay;
			} else {
				alert("Error: Could not load SVG map layer (" + name + ")");
			}
		}
	}
	;
	xhttp_ps.open("GET", url, true);
	xhttp_ps.send();
}

function load_tiles(name, id) {
	var satellite = L.tileLayer('https://notsyncing.net/maps.linux-forks.de/tiles/?id={id}&z={z}&x={x}&y={y}', {
		maxZoom: 8,
		maxNativeZoom: 6,
		minNativeZoom: 0,
		minZoom: 0,
		noWrap: true,
		attribution: 'Map data &copy; <a href="https://wiki.linux-forks.de/mediawiki/index.php/Maps">Linux-Forks</a>, ' + 'All rights reserved, ',
		id: id,
		tileSize: 256,
		zoomOffset: 0,
		opacity: 1.0,
		bounds: layerbounds
	});
	layers.addBaseLayer(satellite, name);
	return satellite;
}

function load_geojson(name, url, iconname, iconcolor, active=1) {
	var xhttp_ps = new XMLHttpRequest();
	xhttp_ps.onreadystatechange = function() {
		if (this.readyState == 4) {
			if (this.status == 200) {
				var geojson = L.geoJSON(JSON.parse(xhttp_ps.responseText), {
					onEachFeature: function(feature, layer) {
						label = String(feature.properties.name)
						layer.bindPopup('<h1><a href="https://wiki.linux-forks.de/mediawiki/index.php/' + feature.properties.name + '">' + feature.properties.name + '</a> (' + feature.geometry.coordinates + ')</h1>' + '<p><img style="width:100%" src="' + feature.properties.image + '"></p>' + '<p>' + feature.properties.description + '</p>');
						layer.bindTooltip(label, {
							permanent: true,
							direction: "center",
							className: "city-names"
						}).openTooltip();
					},
					pointToLayer: function(feature, latlng) {
						label = String(feature.properties.name)
						return new L.marker(latlng,{
							icon: L.AwesomeMarkers.icon({
								icon: iconname,
								markerColor: iconcolor
							})
						}).bindTooltip(label, {
							permanent: false,
							direction: "center",
							opacity: 0.7
						}).openTooltip();
					}
				});
				layers.addOverlay(geojson, name);
				if (active)
					geojson.addTo(mymap);
				return geojson;
			} else {
				alert("Error: Could not load geojson map layer (" + name + ").");
			}
		}
	}
	;
	xhttp_ps.open("GET", url, true);
	xhttp_ps.send();
}

load_tiles("Satellite (2020-04-09)", 'world-2020-04-09').addTo(mymap);
load_tiles("Satellite (2019-05-04, wrong coords)", 'world-2019-05-04');

//load_svg("Test", "./overlay.svg", 0);
load_geojson("Cities", "./geojson/cities.json", "city", "red");
load_geojson("Stations", "./geojson/stations.json", "train", "blue");
load_geojson("Shops", "./geojson/shops.json", "shopping-cart", "green");
load_geojson("Parks", "./geojson/parks.json", "tree", "darkgreen");
load_geojson("Libraries", "./geojson/libraries.json", "book-open", "darkblue");
load_geojson("CW Complexes", "./geojson/cw_complexes.json", "border-all", "black");
load_geojson("Courts", "./geojson/courts.json", "balance-scale", "black");
load_geojson("Waterway", "./geojson/waterway.json", "water", "darkblue");
load_geojson("Train Depots", "./geojson/depots.json", "wrench", "violet");

L.control.scale().addTo(mymap);

var popup = L.popup();

L.AwesomeMarkers.Icon.prototype.options.prefix = 'fa';
var baseballIcon = L.AwesomeMarkers.icon({
	icon: 'coffee',
	markerColor: 'red'
});

function onMapClick(e) {
	popup.setLatLng(e.latlng).setContent("You clicked the map at " + e.latlng.toString()).openOn(mymap);
}

mymap.on('click', onMapClick);