var map, manager;
var centerLatitude = 39.1051, centerLongitude = -94.5712, startZoom = 11;
var cases = "";
var uniquePoints = new Array(); 
uniquePoints.markerId = new Array();
uniquePoints.caseId = new Array();
var icons = new Array();
icons[1] = '';
icons[2] = '';
icons[7] = '';
var crimeTypeChecked = new Array();
crimeTypeChecked[1] = false;
crimeTypeChecked[2] = false;
crimeTypeChecked[3] = false;
crimeTypeChecked[4] = false;
crimeTypeChecked[5] = false;
crimeTypeChecked[6] = false;
crimeTypeChecked[7] = false;
crimeTypeChecked[8] = false;
crimeTypeChecked[9] = false;
crimeTypeChecked[10] = false;
crimeTypeChecked[11] = false;
crimeTypeChecked[12] = false;
crimeTypeChecked[13] = false;
var loadingGif = "images/loading.gif";
var houseMarker = '';
var busy = false;
var kmz = '';

function loadingImage(status) {
	busy = status;
	var imageDiv = document.getElementById('loading-image');
	if (status == true) {
		var imageTag = "<img src=\"images/loading.gif\" />";
		imageDiv.innerHTML = imageTag;
	} else {
		while(imageDiv.firstChild) {
			imageDiv.removeChild(imageDiv.firstChild);
		}
	}
}

function simpleRequest(crimeType) {
	if (crimeTypeChecked[crimeType]) {
		crimeTypeChecked[crimeType] = false;
		op = 'remove';
	} else {
		crimeTypeChecked[crimeType] = true;
		op = 'add';
	}
	changeIndicator(op, crimeType);
	formRequest(op, crimeType, 24);
}

function changeIndicator(op, crimeType) {
	var indicatorImage = document.getElementById(crimeType + "-crime-selected-status");
	if (op == 'add') {
		indicatorImage.setAttribute('src', 'crime-icons/00.gif');
	}
	if (op == 'remove') {
		indicatorImage.setAttribute('src', 'crime-icons/01.gif');
	}
}

function allRequest(op) {
	var crimeType = new Array();
	for (i = 1; i <= crimeTypeChecked.length - 1; i++) {
		if (crimeTypeChecked == op) { continue; }
		else { 
			crimeType.push(i);
			changeIndicator(op, i);
		}	
	}
	crimeType = crimeType.join(',');
	formRequest(op, crimeType, 24);
}

function formRequest(op, crimeType, age) {
  var parameters = "crime-type=" + crimeType + "&age=" + age;
	request(op, 'cases', parameters);
}

function request(op, type, parameters) {
	if (type == 'address') {
		if (!parameters) {
			return;
		}
		parameters = escape(parameters);
		url = '../includes/php/classes/yahoo_maps/y_geocode.php?ajax=true&location=' + parameters;
	}
	if (type == 'valid-time') {
		url = 'jsonobjjs.php?gettime=1&s=&e=';
	}
	if (type == 'cases') {
		url = 'jsonobjjs.php?summarize=1&s=&e=&' + parameters;
	}
	loadingImage(true);
  if (window.XMLHttpRequest) {
		http_request = new XMLHttpRequest();
	}
  else {
   	http_request = new ActiveXObject("Microsoft.XMLHTTP");
	}
  http_request.onreadystatechange = function() {
    handle_json(op, type, http_request, parameters)
  };
  http_request.open("GET", url, true);
  http_request.send(null);
}

function handle_json(op, type, http_request, parameters) {
	if (http_request.readyState == 4) {
		if (type == 'cases') {
 			cases = eval(http_request.responseText);
			if (!cases) {
				loadingImage(false);
			}
			if (op == 'add') {
  			addMarkers(cases);
			}
			if (op == 'remove') {
				removeMarkers(cases);
			}
		}
		if (type == 'address') {
			coords = eval( "(" + http_request.responseText + ")");
			changeView(coords, parameters);
		}
		if (type == 'valid-time') {
			validTime = http_request.responseText;
			div = document.getElementById('ibox');
			div.innerHTML = validTime;
			loadingImage(false)
		}
 	}
}

function createMarkerClickHandler(marker, pointData) {
	return function() {
		if (pointData.case_no < 9999999) {
			pointData.case_no = '0' + pointData.case_no;
		}
		marker.openInfoWindowHtml(
			'<h3>' + pointData.occ_date + '</h3>'+pointData.address);
		return false;
	};
}


function createMarker(pointData, caseId) {
	var latlng = new GLatLng(pointData.latitude, pointData.longitude);
	var icon = new GIcon();
	icon.image = 'crime-icons/' + pointData.crime_type + '_btn.png';
	icon.shadow = 'crime-icons/shadow.png';
	icon.iconSize = new GSize(18, 19);
	icon.iconAnchor = new GPoint(9, 9);
	icon.infoWindowAnchor = new GPoint(11, 7);

	opts = {
		"icon": icon,
		"clickable": true,
		"labelText": pointData.crime_type,
		"labelOffset": new GSize(-9, -9)
	};
	var marker = new GMarker(latlng, opts);
	var handler = createMarkerClickHandler(marker, pointData);
	
	GEvent.addListener(marker, "click", handler);

	var listItem = document.createElement('li');
	listItem.setAttribute("id", caseId);
	listItem.innerHTML = '<img class="label" src="crime-icons/' + pointData.crime_type + '_small.png" /><a href="' + pointData.wp + '">' + pointData.address + '</a>';
	listItem.getElementsByTagName('a')[0].onclick = handler;
  fillLists(listItem);
	return marker;
}

function fillLists(listItem) {
	var alpha = document.getElementById('alpha');
	var beta = document.getElementById('beta');
	if (alpha.getElementsByTagName('li').length > beta.getElementsByTagName('li').length) {
		beta.appendChild(listItem);
	} else {
		alpha.appendChild(listItem);
	}
}

function windowHeight() {
	// Standard browsers (Mozilla, Safari, etc.)
	if (self.innerHeight)
		return self.innerHeight;
	// IE 6
	if (document.documentElement && document.documentElement.clientHeight)
		return document.documentElement.clientHeight;
	// IE 5
	if (document.body)
		return document.body.clientHeight;
	// Just in case. 
	return 0;
}

function handleResize() {
		var hnfHeight = document.getElementById('header').offsetHeight + document.getElementById('horizontal').offsetHeight;
		var leftOver = windowHeight() - hnfHeight - 10;
		document.getElementById('map-wrapper').style.height = leftOver - 54 + 'px';
		document.getElementById('map').style.height = leftOver - 69 + 'px';
}

function init() {
	handleResize();
	map = new GMap(document.getElementById("map"));
	map.addControl(new GSmallMapControl());
	map.setCenter(new GLatLng(centerLatitude, centerLongitude), startZoom);
	map.addControl(new GMapTypeControl());
  manager = new MarkerManager(map);
	request('get', 'valid-time');
}

function cityLimits() {
	li = document.getElementById('city-limits');
	if (li.firstChild.id == 'nav014') {
		li.firstChild.id = 'nav015';
		kmz = new GGeoXml("http://www.fresnobee.com/static/crime/FresnoCityLimits.kmz");
		map.addOverlay(kmz);
	} else {
		if (li.firstChild.id == 'nav015') {
			li.firstChild.id = 'nav014';
			map.removeOverlay(kmz);
		}
	}
}
function addMarkers(markers) {

	// This is a sorting trick, don't worry too much about it.
	markers.sort(function(a, b) { return (a.abbr > b.abbr) ? +1 : -1; });
	batch = [];
	for(id in markers) {
		var continueFlag = 0;
		if (markers[id].latitude == '') { continue; }
		caseId = markers[id].case_no + "-" + markers[id].ucrcode;
		for(code in uniquePoints.caseId) {
			if (uniquePoints.caseId[code] == caseId) {
				continueFlag = 1;
				break;
			}
		}
		if (continueFlag) {
			continue;
		}
		var marker = createMarker(markers[id], caseId);
		batch.push(marker);
		uniquePoints.markerId.push(marker);
		uniquePoints.caseId.push(caseId);
	}
	manager.addMarkers(batch, 11);
	manager.refresh();
	loadingImage(false);
	handleResize();
}

function removeMarkers(markers) {
	markers.sort(function(a, b) { return (a.abbr > b.abbr) ? +1 : -1; });
	var alpha = document.getElementById('alpha');
	var beta = document.getElementById('beta');
	for(id in markers) {
		caseId = markers[id].case_no + "-" + markers[id].ucrcode;
		for(code in uniquePoints.markerId) {
			if (uniquePoints.caseId[code] == caseId) {
				manager.removeMarker(uniquePoints.markerId[code]);
				li = document.getElementById(caseId);
				li.parentNode.removeChild(li);
				uniquePoints.caseId.splice(code, 1);
				uniquePoints.markerId.splice(code, 1);
			}
		}
	}
	manager.refresh();
	loadingImage(false);
	handleResize();
}


function clearMarkers() {
  manager.clearMarkers();
  var list = document.getElementById('crime-list');
	uniquePoints.markerId = new Array();
	uniquePoints.caseId = new Array();
	while (list.firstChild) {
		list.removeChild(list.firstChild);
	}
}

function changeView(coords, address, op) {
	if (houseMarker != '') {
		manager.removeMarker(houseMarker);
	}
	if (op != 'clear') {
		var latlng = new GLatLng(coords.latitude, coords.longitude);
		var icon = new GIcon();
		icon.image = 'crime-icons/house_btn.png';
		icon.shadow = 'crime-icons/shadow.png';
		icon.iconSize = new GSize(18, 19);
		icon.iconAnchor = new GPoint(9, 9);
		icon.infoWindowAnchor = new GPoint(11, 7);
		opts = {
			"icon": icon,
			"clickable": true,
			"draggable": true
		};
		houseMarker = new GMarker(latlng, opts);
		var handler = function () {
			houseMarker.openInfoWindowHtml(unescape(address) + "<br />Kansas City, MO<br />This item is draggable.");
		};
		GEvent.addListener(houseMarker, "click", handler);
		manager.addMarker(houseMarker, 0, 17);
		if (coords.precision == 'address') {
			map.setCenter(latlng, 13);
		}
		if (coords.status == 602) {
			alert("Unable to find street address");
		}
		loadingImage(false);
	} else {
		map.setCenter(new GLatLng(centerLatitude, centerLongitude), startZoom);
	}
}

function detectEmptyBox(contents) {
	if (contents == '') {
		changeView(null, null, 'clear');
	}
}

window.onresize = handleResize;
window.onload = init;
window.onunload = GUnload;