var mapCont = document.getElementById('map');
var margin = mapCont.offsetTop * 2;
mapCont.style.height = 'Calc(100vh - ' + margin + 'px)';


var abuseData = {
	geoJsons: {
		county:
		{
			layer: null,
			data: null,
			ready: false,
			url: "./geojson/cb_2022_us_county_500k.geojson"
		},
		state:
		{
			layer: null,
			data: null,
			ready: false,
			url: "./geojson/cb_2022_us_state_500k.geojson"
		}		
	}
};

var clusteredMarkers;
var fnQueue = [];
var abuseDetailPanel;
var legendsHidden = {
	detail: false,
	data: false
};

var map = L.map('map', {
	renderer: L.canvas()
}).setView([37.8, -96], 4);
map.createPane('labels');
map.getPane('labels').style.zIndex = 450;
map.getPane('labels').style.pointerEvents = 'none';
map.getPane('labels').style.opacity = .5;

map.createPane('terrainlines');
map.getPane('terrainlines').style.zIndex = 425;
map.getPane('terrainlines').style.pointerEvents = 'none';
map.getPane('terrainlines').style.opacity = .25;

var CartoDB_PositronNoLabels = L.tileLayer('https://{s}.basemaps.cartocdn.com/light_nolabels/{z}/{x}/{y}{r}.png', {
	attribution: '&copy; <a href="https://carto.com/attributions">CARTO</a>&nbsp;' +
				'<a href="https://www.stadiamaps.com/" target="_blank">Stadia Maps</a>&nbsp;<a href="https://www.stamen.com/" target="_blank">Stamen Design</a>',
	subdomains: 'abcd',
	maxZoom: 20
}).addTo(map);

var Stadia_StamenTerrainLines = L.tileLayer('https://tiles.stadiamaps.com/tiles/stamen_terrain_lines/{z}/{x}/{y}{r}.{ext}', {
	minZoom: 0,
	maxZoom: 18,
	ext: 'png',
	pane: 'terrainlines'
}).addTo(map);

var CartoDB_VoyagerOnlyLabels = L.tileLayer('https://{s}.basemaps.cartocdn.com/rastertiles/voyager_only_labels/{z}/{x}/{y}{r}.png', {
	subdomains: 'abcd',
	maxZoom: 20,
	pane: 'labels'
}).addTo(map);

function geoJsonsReady() {
	var allReady = true;
	Object.values(abuseData.geoJsons).forEach((g) => { if (!g.ready) allReady = false; });
	return allReady;
}

function loadGeoJsons() {
	var checkComplete = function (node) {
		node.ready = true;

		if (geoJsonsReady()) {
			while (fnQueue.length > 0) {
				let work = fnQueue.shift();
				work.fnc.apply(null, work.arg);
			}
		}
	};

	Object.values(abuseData.geoJsons).forEach((gj) => {
		fetch(gj.url).then(r => r.json()).then((d) => {
			gj.data = d;
			checkComplete(gj);
		});
	});
}

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

function onEachFeature(feature, layer) {
	if (feature.properties.incidents == 0) return;
	var html;
	if (feature.properties.NAMELSAD && feature.properties.incidents == 1) {
		html = `<b>${feature.properties.NAMELSAD}</b><br>1 incident`;
	}
	else if (feature.properties.NAMELSAD) {
		html = `<b>${feature.properties.NAMELSAD}</b><br>${feature.properties.incidents} incidents`;
	}
	else if (feature.properties.NAME && feature.properties.incidents == 1) {
		html = `<b>${feature.properties.NAME}</b><br>1 incident`;
	}
	else {
		html = `<b>${feature.properties.NAME}</b><br>${feature.properties.incidents} incidents`;
	}
	
	layer.bindTooltip(html, { interactive: false, sticky: true });
	layer.on('click', zoomToFeature);
}

function addLegendShowHideHandlers() {
	var legends = document.getElementsByClassName('legendTitle');
	if (!legends || legends.length == 0) return;
	Object.values(legends).forEach((elm, i) => {
		elm.addEventListener('click', handleLegendShowHide);
	});
}

function removeLegendShowHideHandlers() {
	var legends = document.getElementsByClassName('legendTitle');
	if (!legends || legends.length == 0) return;
	Object.values(legends).forEach((elm, i) => {
		elm.removeEventListener('click', handleLegendShowHide);
	});
}

function handleLegendShowHide(e) {
	/*if (e.target.classList.contains('hidden')) {
		var sbl = e.target.nextElementSibling;
		while (sbl) {
			var dsp = sbl.getAttribute('restoreDisplay') || 'block';
			sbl.style.display = dsp;
			sbl = sbl.nextElementSibling;
		}
		e.target.classList.remove('hidden');
	}
	else {
		var sbl = e.target.nextElementSibling;
		while (sbl) {
			var dsp = sbl.style.display || 'block';
			sbl.setAttribute('restoreDisplay', dsp);
			sbl.style.display = 'none';
			sbl = sbl.nextElementSibling;
		}
		e.target.classList.add('hidden');
	}*/

	var sbl = e.target.nextElementSibling;
	while (sbl) {
		if (sbl.classList.contains('hidden')) {
			sbl.classList.remove('hidden');
		}
		else {
			sbl.classList.add('hidden');
		}
		sbl = sbl.nextElementSibling;
	}
	if (e.target.classList.contains('hidden')) {
		var lg = e.target.getAttribute('lg');
		legendsHidden[lg] = false;
	}
	else {
		e.target.classList.add('hidden');
		var lg = e.target.getAttribute('lg');
		legendsHidden[lg] = true;
	}
	return false;
}

function showBoundaryLayer() {
	if (!geoJsonsReady()) return;
	removeLegendShowHideHandlers();
	var z = map.getZoom();
	if (z >= 8.5) {
		if (map.hasLayer(abuseData.geoJsons.state.layer)) abuseData.geoJsons.state.layer.remove();
		if (map.hasLayer(abuseData.geoJsons.county.layer)) abuseData.geoJsons.county.layer.remove();	
		if (clusteredMarkers && !map.hasLayer(clusteredMarkers))
			map.addLayer(clusteredMarkers);
		if (abuseDetailPanel && !map.hasLayer(abuseDetailPanel))
			abuseDetailPanel.addTo(map);
	}
	else if (z > 4) {
		if (map.hasLayer(abuseData.geoJsons.state.layer)) abuseData.geoJsons.state.layer.remove();
		if (!map.hasLayer(abuseData.geoJsons.county.layer)) abuseData.geoJsons.county.layer.addTo(map);	
		if (clusteredMarkers && !map.hasLayer(clusteredMarkers))
			map.addLayer(clusteredMarkers);
		if (abuseDetailPanel && !map.hasLayer(abuseDetailPanel))
			abuseDetailPanel.addTo(map);
	}
	else {
		if (map.hasLayer(abuseData.geoJsons.county.layer)) abuseData.geoJsons.county.layer.remove();
		if (!map.hasLayer(abuseData.geoJsons.state.layer)) abuseData.geoJsons.state.layer.addTo(map);		
		if (clusteredMarkers && !map.hasLayer(clusteredMarkers))
			map.addLayer(clusteredMarkers);
		if (abuseDetailPanel && !map.hasLayer(abuseDetailPanel))
			abuseDetailPanel.addTo(map);
	}
	addLegendShowHideHandlers();
}

function receiveDataLayers(layers, catDetails) {
	if (!geoJsonsReady()) {
		fnQueue.push({ fnc: receiveDataLayers, arg: [layers, catDetails] });
		return;
	}	

	clearDataLayers();

	var catValueColors = [];
	var legendItems = {
		title: '', catValues: {}
	};

	if (catDetails) {
		catValueColors = (chroma.scale('Paired').colors(catDetails.length)).reverse();
		catValueColors.forEach((c, i) => {
			if (c == '#ffffd9')
				catValueColors[i] = '#858585';
		});

		legendItems.title = `${Object.keys(catDetails[0])[0]} Distribution`;

		catDetails.forEach((c, idx) => {
			var items = Object.values(c);
			legendItems.catValues[items[0]] = catValueColors[idx];
		});
	}
	else {
		catValueColors = (chroma.scale('Paired').colors(1)).reverse();
		catValueColors.forEach((c, i) => {
			if (c == '#ffffd9')
				catValueColors[i] = '#858585';
		});
		legendItems = {
			title: `All Incidents`, catValues: { 'All Locations': catValueColors[0] }
		};
	}

	abuseDetailPanel.onAdd = function (map) {

		var div = L.DomUtil.create('div', 'info detailPanel');
		var legendKey = "";

		Object.entries(legendItems.catValues).forEach((e, i) => {
			legendKey += '<div style="display: flex; flex-direction: row; align-items: center">' +
				'<i style="background: ' + e[1] + '"></i>' +
				'<div>' + e[0] + '</div>' +
				'</div>';
		});

		var wedge = 360 / catValueColors.length;
		var pieCSS = [];
		var startDeg = 0;
		for (var i = 0; i < catValueColors.length; i++) {
			pieCSS.push(`${catValueColors[i]} ${(wedge * i)}deg, ${catValueColors[i]} ${((i + 1) * wedge)}deg`);
		}
		var html = `<div id="abuseDetailPanel"><h3 lg="abuse" class="legendTitle${legendsHidden.abuse ? ' hidden' : ''}"><span style="float: left;">&updownarrow;</span>&nbsp;${legendItems.title}</h3><div class="legendValueInfo${legendsHidden.abuse ? ' hidden' : ''}"><div style="background-image: conic-gradient(${pieCSS.join(', ')}); width: 60px; height: 60px; border-radius: 50%; display: inline-block;">&nbsp;</div><div style="display: inline-block;">
					${legendKey}</div></div></div>`;
		div.innerHTML = html;
		return div;
	};

	var markers = [];
	for (var i = 0; i < layers.length; i++) {
		var lat = layers[i].Latitude;
		var lng = layers[i].Longitude;
			
		var incident = layers[i];
		var o;
		if (catDetails) {
			o = {};
			var cat = Object.keys(catDetails[0])[0];			
			var catValue = incident[cat + ' Value'];
			var oo;
			if (!catValue || catValue == '')
				continue;
			if (catValue.indexOf('|') > -1) {
				catValue = catValue.split('|');
				oo = {
					'category': cat,
					'categoryValue': catValue,
					'childNumber': incident['Child Number']
				};
				catValue.forEach((v) => {
					oo['catValueColor'] = oo['catValueColor'] ? oo['catValueColor'].concat(legendItems.catValues[v]) : new Array(legendItems.catValues[v]);
				});
				o = oo;
			}
			else {
				oo = {
					'category': cat,
					'categoryValue': catValue,
					'catValueColor': legendItems.catValues[catValue] == '#ffffd9' ? '#858585' : legendItems.catValues[catValue],
					'childNumber': incident['Child Number']
				};
				o = oo;
			}
		}
		else {
			o = {};
			var oo = {
				'category': 'All Incidents',
				'categoryValue': 'All Locations',
				'catValueColor': catValueColors[0] == '#ffffd9' ? '#858585' : catValueColors[0],
				'childNumber': incident['Child Number']
			};
			o = oo;
		}
		//temporary fix to pick one color for multi answer incidents.
		if (Array.isArray(o['catValueColor']))
			o['catValueColor'] = o['catValueColor'][0];


		var title = 'Click for details';
		var html = `<p><i class="lighter">location:</i>&nbsp;${(layers[i]['Incident City'] ? layers[i]['Incident City'] + ', ' : '') +
			(layers[i]['Incident County'] ? layers[i]['Incident County'] + ', ' : '') + (layers[i]['Incident State'] ? layers[i]['Incident State'] : '')}</p>`;
		html += `<p><i class="lighter"># of children affected:</i>&nbsp;${layers[i]['Child Number']}</p>`;
		html += `<p><i class="lighter">year of incident:</i>&nbsp;${!layers[i]['Incident Year'] || layers[i]['Incident Year'] == 0 ? 'not available' : layers[i]['Incident Year']}</p>`;
		html += `<p><i class="lighter">distribution:</i>&nbsp;${o['categoryValue']}</p>`;

		var marker = L.circleMarker(new L.LatLng(lat, lng), {
			title: title, pane: 'markerPane', color: '#000000', weight: 1, opacity: .3, fill: true, fillOpacity: 1, fillColor: o['catValueColor']
		});
		marker['incidentGroup'] = o;
		marker.bindPopup(html);
		markers.push(marker);

		if (layers[i]['Incident State GEO_ID']) {
			var ft = abuseData.geoJsons.state.data.features.find((f) => f.properties.GEOID == layers[i]['Incident State GEO_ID']);
			if (ft) {
				ft.properties.incidents += 1;
			}
		}
		if (layers[i]['Incident County GEO_ID']) {
			var ft = abuseData.geoJsons.county.data.features.find((f) => f.properties.GEOID == layers[i]['Incident County GEO_ID']);
			if (ft) {
				ft.properties.incidents += 1;
			}
		}
	}

	clusteredMarkers.addLayers(markers, { pane: 'terrainlinesPane' }).addTo(map);
	abuseDetailPanel.addTo(map);

	var bins = abuseData.geoJsons.county.data.features.filter((f) => f.properties.incidents > 0);
	abuseData.geoJsons.county.layer = L.dataClassification(abuseData.geoJsons.county.data, {
		style: { color: "rgba(233, 234, 235, .5)" },
		mode: 'jenks',
		classes: bins.length >= 4 ? 5 : 3,
		field: 'incidents',
		pointMode: 'color',
		colorRamp: 'YlOrRd',
		classRounding: 0,
		legendTitle: 'Incidents by County',
		legendPosition: 'bottomright',
		onEachFeature: onEachFeature
	});
	bins = abuseData.geoJsons.state.data.features.filter((f) => f.properties.incidents > 0);
	abuseData.geoJsons.state.layer = L.dataClassification(abuseData.geoJsons.state.data, {
		style: { color: "rgba(233, 234, 235, .5)" },
		mode: 'jenks',
		classes: bins.length >= 4 ? 5 : 3,
		field: 'incidents',
		pointMode: 'color',
		colorRamp: 'YlOrRd',
		classRounding: 0,
		legendTitle: 'Incidents by State',
		legendPosition: 'bottomright',
		onEachFeature: onEachFeature
	});

	map.on('zoomend', showBoundaryLayer);

	if (!catDetails) {
		if (map.getZoom() == 3)
			showBoundaryLayer();
		map.setView([37.8, -96], 3);
		return;
	}
	
	showBoundaryLayer();
}

function createClusterIcon(cluster) {

	var markers = cluster.getAllChildMarkers();
	var html = '';
	var n = 0;
	var objColors = []
	for (var i = 0; i < markers.length; i++) {
		//keep it to just the one selected category for now
		var o = markers[i]['incidentGroup'];
		var catValue = o['categoryValue'];
		n += Array.isArray(catValue) ? catValue.length : 1;
		if (objColors.indexOf(o['catValueColor']) < 0)
			objColors.push(o['catValueColor']);
	}

	var wedge = 360 / objColors.length;	
	var pieCSS = [];
	var startDeg = 0;
	for (var i = 0; i < objColors.length; i++) {
		pieCSS.push(`${objColors[i]} ${(wedge * i)}deg, ${objColors[i]} ${((i + 1) * wedge)}deg`);
	}
	var html = `<div class="pie" style="background-image: conic-gradient(${pieCSS.join(', ')});"><span class="pieText">${n}</span></div>`;

	return L.divIcon({ html: html, className: 'pieChart', iconSize: L.point(40, 40) });
}

function clearDataLayers() {
	removeLegendShowHideHandlers();
	map.off('zoomend', showBoundaryLayer);

	if (clusteredMarkers && clusteredMarkers.getLayers().length > 0) {
		clusteredMarkers.clearLayers();
	}
	if (clusteredMarkers && map.hasLayer(clusteredMarkers))
		map.removeLayer(clusteredMarkers);

	clusteredMarkers = L.markerClusterGroup({ showCoverageOnHover: false, iconCreateFunction: createClusterIcon });
	Object.values(abuseData.geoJsons).forEach((gj) => {
		if (gj.layer && map.hasLayer(gj.layer))
			gj.layer.remove();
		if (gj.data && gj.ready && gj.data.features)
			gj.data.features.forEach(f => { f.properties['incidents'] = 0; });
	});
	if (abuseDetailPanel) abuseDetailPanel.remove();
	abuseDetailPanel = L.control({ position: 'bottomleft' });	
}

loadGeoJsons();