"use strict";

function init_wrmap(i, jq_map) {
	jq_map = $(jq_map);
	var jq_map_script = jq_map.children();
	OpenLayers.ImgPath = jq_map.attr('data-img-path'); // e.g. "/mediawiki/extensions/wrmap/openlayers/img/"
	var json_string = jq_map_script.text();
	jq_map_script.detach();

	
	// extract, tranform and split features to layers
	var EPSG4326 = new OpenLayers.Projection("EPSG:4326"); // lon/lat 
	var EPSG3857 = new OpenLayers.Projection("EPSG:3857"); // google
	var format_json = new OpenLayers.Format.GeoJSON();
	var features_all = format_json.read(json_string);
	var features_path = new Array();
	var features_point = new Array();
	var features_sledrun = new Array();
	for (var i = 0; i != features_all.length; ++i) {
		var feature = features_all[i];
		feature.geometry.transform(EPSG4326, EPSG3857);
		if (feature.geometry.CLASS_NAME == 'OpenLayers.Geometry.Point') {
			if (feature.attributes.type == 'sledrun') {
				if (feature.attributes.condition === undefined) feature.attributes.condition = 0;
				features_sledrun.push(feature);
			} else features_point.push(feature);
		} else features_path.push(feature);
	}


	// background layer
	// ----------------
	var layer_map = new OpenLayers.Layer.Google("Google Physical", {
		type: google.maps.MapTypeId.TERRAIN
	});

	// // Alternative: OSM map
	// var layer_map = new OpenLayers.Layer.OSM();
	
	// // Alternative: Microsoft Bing Maps
	// var layer_map = new OpenLayers.Layer.Bing({
	//     type: "Road",
	//     key: "AgPH3SlIXAwajrJKf0FORQyhTqsP8KIlvtN6RKfvxe6fOB6q6-HFmg8EOFm7LSOA"});

	
	// path layer
	// ----------
	var layer_path = new OpenLayers.Layer.Vector("Path", {
		styleMap: new OpenLayers.StyleMap(new OpenLayers.Style({
				strokeColor: '${getStrokeColor}',
				strokeWidth: '${getStrokeWidth}'
			}, {
				context: {
					getStrokeColor: function(feature) {
						if (feature.attributes.strokeColor !== undefined) return feature.attributes.strokeColor;
						if (feature.attributes.type == 'sledrun') return '#014e9a';
						if (feature.attributes.type == 'walk') return '#e98401';
						if (feature.attributes.type == 'alternative') return '#7f7fff';
						if (feature.attributes.type == 'lift') return '#000000';
						return '#ee9900';
					},
					getStrokeWidth: function(feature) {
						if (feature.attributes.strokeWidth !== undefined) return feature.attributes.strokeWidth;
						if (feature.attributes.type == 'lift') return 3;
						return 6;
					}
				}
			}))
	});

	
	// point layer
	// -----------
	var layer_point = new OpenLayers.Layer.Vector("Point", {
		rendererOptions: {yOrdering: true}
	});

	
	// sledrun layer
	// ------------
	var layer_sledrun = new OpenLayers.Layer.Vector("Sledrun", { 
		styleMap: new OpenLayers.StyleMap({
			"default": new OpenLayers.Style({
				externalGraphic: "/vorlagen/bahnzustand${condition}_0.png",
				graphicWidth: 17,
				graphicHeight: 17,
				graphicXOffset: -8,
				graphicYOffset: -8,
				graphicZIndex: 12,
				backgroundGraphic: "/vorlagen/gmap_rodelbahn_c_s.png",
				backgroundWidth: 23,
				backgroundHeight: 23,
				backgroundXOffset: -8,
				backgroundYOffset: -8,
				backgroundGraphicZIndex: 11,
				title: "${name}"
			}),
			"highlight": new OpenLayers.Style({
				label: "${name}",
				labelOutlineColor: "white",
				labelYOffset: 12,
				fontWeight: "bold"
			}) 
		}),
		rendererOptions: {yOrdering: true}
	});

	// map itself
	// ----------
	var lon = parseFloat(jq_map.attr('data-center-lon'));
	var lat = parseFloat(jq_map.attr('data-center-lat'));
	var zoom = parseInt(jq_map.attr('data-zoom'));
	var map = new OpenLayers.Map(jq_map.context, {
		projection: EPSG3857,
		displayProjection: EPSG4326,
		units: "m",
		theme: null,
		layers: [layer_map, layer_path, layer_point, layer_sledrun],
		center: new OpenLayers.LonLat(lon, lat).transform(EPSG4326, EPSG3857),
		zoom: zoom
	});
	

	// add features
	// if this would be done before the layer is added to the map, the features are not added
	layer_path.addFeatures(features_path); 
	layer_point.addFeatures(features_point); 
	layer_sledrun.addFeatures(features_sledrun); 

	// disable mouse wheel zoom
	var navigation_control = map.getControlsByClass('OpenLayers.Control.Navigation')[0];
	navigation_control.disableZoomWheel();

	// layer switcher
	map.addControl(new OpenLayers.Control.LayerSwitcher());

	// print sledrun name when mouse moves over it
	map.addControl(new OpenLayers.Control.SelectFeature(layer_sledrun, {
		hover: true,
		highlightOnly: true,
		autoActivate: true,
		renderIntent: "highlight"
	}));

	// show popup when user clicks on a sledrun icon
	map.addControl(new OpenLayers.Control.SelectFeature(layer_sledrun, {
		autoActivate: true,
		toggle: true,
		onSelect: function(feature) {
			// Open popup
			var popup_text = "<h2>" + feature.attributes.name + '</h2>\n' +
			'<ul>\n' +
			'<li><a href="' + feature.attributes.wiki + '">Details zur Rodelbahn</a></li>\n' + 
			'<li>Rodelbahnzustand<br/>';
			if (feature.attributes.date_report !== undefined) {
				var condition_text = {1: 'Sehr gut', 2: 'Gut', 3: 'Mittelm&auml;&szlig;ig', 4: 'Schlecht', 5: 'Geht nicht'};
				var year_month_day = feature.attributes.date_report.split('-');
				popup_text += '<a href="' + feature.attributes.wiki + '#Eintr.C3.A4ge">' + condition_text[feature.attributes.condition] + '</a> ' + 
				'<small>' + year_month_day[2] + '.' + year_month_day[1] + '.</small> ' +
				'<em><a href="' + feature.attributes.wiki + '#Eintragen">Neu</a></em>';
			} else {
				popup_text += '<em><a href="' + feature.attributes.wiki + '#Eintragen">Bitte eintragen</a></em>';
			}
			popup_text += '</li>\n</ul>\n';
			var selectFeatureControl = this;
			var popup = new OpenLayers.Popup.FramedCloud('sledruninfopopup_' + feature.attributes.wiki, 
			feature.geometry.getBounds().getCenterLonLat(),
			null,
			popup_text,
			null, true, function(event) {
				// onPopupClose
				selectFeatureControl.unselectAll();
			});
			feature.popup = popup;
			map.addPopup(popup);
		},
		onUnselect: function(feature) {
			// Close popup
			map.removePopup(feature.popup);
			feature.popup.destroy();
			feature.popup = null;
		}
	}));
}


function init_wrmaps() {
	var jq_maps = $('.wrmap'); // all wrmap <div> elements
	jq_maps.each(init_wrmap);
}


$(document).ready(init_wrmaps);