var data = {"count":0,"installations":[]};
var filteredLocalities = {};
var map = undefined;
var locality = ''
var lastLatitude = 48.69096039092549;
var lastLongitude = 19.632568359375;
var lastZoom = 7

function initialize() {
	var center = new google.maps.LatLng(lastLatitude, lastLongitude);
	map = new google.maps.Map(document.getElementById('map'), {
		zoom: lastZoom,
		center: center,
		mapTypeId: google.maps.MapTypeId.ROADMAP
	});

	var latlngbounds = new google.maps.LatLngBounds();
	var markers = [];
	for (var i = 0; i < data.installations.length; i++) {
		var dataInstallation = data.installations[i];
		var latLng = new google.maps.LatLng(dataInstallation.latitude,
			dataInstallation.longitude);
		var marker = new google.maps.Marker({
			position: latLng
		});
		markers.push(marker);
		latlngbounds.extend(latLng);
	}
	var options = { imagePath: 'images/markerclusterer/m' };
	var markerCluster = new MarkerClusterer(map, markers, options);
	map.setCenter(latlngbounds.getCenter());
	map.fitBounds(latlngbounds);
	google.maps.event.addListener(map, 'idle', function() {
		updateCompaniesList(map);
	});
}

function updateCompaniesList(map) {
	var lat1 = map.getBounds().getNorthEast().lat();
	var lng1 = map.getBounds().getNorthEast().lng();
	var lat0 = map.getBounds().getSouthWest().lat();
	var lng0 = map.getBounds().getSouthWest().lng();

	var hpTypeCounts = {};
	var localityCounts = {};
	var supplierCounts = {};
	var companyCounts = {};

	var rows = [];
	filteredLocalities = {};
	for (var i = 0; i < data['count']; i++) {
		var installation = data['installations'][i];
		var lng = installation['longitude'];
		var lat = installation['latitude'];

		if (lng >= lng0 && lng <= lng1 && lat >= lat0 && lat <= lat1) {
			if (installation.hp_type_name) {
				var key = '<a href="/a/databaza/hp_installations_map?company_id=REPLACE&hp_type_name=REPLACE&locale=en_GB">'.replace("REPLACE", installation.hp_type_name)
					+ installation.hp_type_name + '</a>';
				if (hpTypeCounts[key]) {
					hpTypeCounts[key]++;
				} else {
					hpTypeCounts[key] = 1;
				}
			}

			if (installation.locality) {
				var key = '<a href="/a/databaza/hp_installations_map?company_id=REPLACE&locality=REPLACE&locale=en_GB">'.replace("REPLACE", installation.locality)
					+ installation.locality + '</a>';
				if (localityCounts[key]) {
					localityCounts[key]++;
				} else {
					localityCounts[key] = 1;
				}
			}

			if (installation.company_name) {
				var key = '<a href="/a/databaza/hp_installations_map?company_id=REPLACE&locale=en_GB">'.replace("REPLACE", installation.company_id)
					+ installation.company_name + '</a>';
				if (companyCounts[key]) {
					companyCounts[key]++;
				} else {
					companyCounts[key] = 1;
				}
			}

			if (installation.supplier) {
				var key = '<a href="/a/databaza/hp_installations_map?company_id=REPLACE&supplier=REPLACE&locale=en_GB">'.replace("REPLACE", installation.supplier)
					+ installation.supplier + '</a>';
				if (supplierCounts[key]) {
					supplierCounts[key]++;
				} else {
					supplierCounts[key] = 1;
				}
			}
		}
	}

	jQuery('#hp_type_counts').html(
		countDictionaryToTable(hpTypeCounts)
	);

	jQuery('#locality_counts').html(
		countDictionaryToTable(localityCounts)
	);

	jQuery('#company_counts').html(
		countDictionaryToTable(companyCounts)
	);

	jQuery('#supplier_counts').html(
		countDictionaryToTable(supplierCounts)
	);
}

function countDictionaryToTable(counts) {
	return Object.keys(counts).sort(function(a,b) {
		return counts[b] - counts[a];
	}).map(function (key) {
		return '<tr><th style="text-align: right; font-weight: bold;">' + key + '</th><td>' + counts[key] + '</td></tr>';
	}).join('');
}

function showAll() {
	setMapPosition(48.69096039092549, 19.632568359375, 7);
}

function setMapPosition(lat, lng, zoom) {
	if (lat != lastLatitude || lng != lastLongitude)
		map.setCenter(new google.maps.LatLng(lat, lng));
	lastLatitude = lat;
	lastLongitude = lng;
	if (zoom != map.getZoom())
		map.setZoom(zoom);
}

google.maps.event.addDomListener(window, 'load', initialize);