/*
 * jMapping v1.1 - jQuery plugin for creating Google Maps
 *
 * Copyright (c) 2009 Brian Landau (Viget Labs)
 * MIT License: http://www.opensource.org/licenses/mit-license.php
 *
 */

if (GMap2){
	GMap2.prototype.centerAndZoomOnBounds = function(bounds) {
		this.setCenter(bounds.getCenter(), this.getBoundsZoomLevel(bounds));
	};
}

(function($){
	$.jMapping = function(map_elm, options){
		this.map_elm = (typeof map_elm == "string") ? $(map_elm).get(0) : map_elm;

		if (!($(this.map_elm).data('jMapping') instanceof $.jMapping)){
			this.settings = $.extend(true, {}, $.jMapping.defaults);
			$.extend(true, this.settings, options);

			if (GBrowserIsCompatible()) {
				this.init();
			} else {
				this.mapped = false;
			}
		}
	};

	$.extend($.jMapping, {
		defaults: {
			side_bar_selector: '#map-side-bar:first',
			location_selector: '.map-location',
			link_selector: 'a.map-link',
			info_window_selector: '.info-box',
			info_window_max_width: 425,
			metadata_options: {
				type: 'attr',
				name: 'data'
			}
		},
		makeGLatLng: function(place_point){
			return new GLatLng(place_point.lat, place_point.lng);
		}
	});

	$.jMapping.prototype = {
		gmarkers: {},
		mapped: true,
		init: function(update){
			var self = this, places, info_window_selector, bounds;

			info_window_selector = [
			this.settings.side_bar_selector,
			this.settings.location_selector,
			this.settings.info_window_selector
			].join(' ');
			$(info_window_selector).hide();

			places = this.getPlaces();
			bounds = this._getBounds(places);

			if (update){
				this.gmarkers = {};
				this.markerManager.clearMarkers();
				this.map.centerAndZoomOnBounds(bounds);
			} else {
				this.createMap(places, bounds);
				this.markerManager = new MarkerManager(this.map);
			}

			places.each(function(){
				self._createMarker(this);
				if (!(self.settings.link_selector === false)){
					self._setupLink(this);
				}
			});

			bounds_zoom_level = this.map.getBoundsZoomLevel(bounds);
			min_zoom = (bounds_zoom_level < 7) ? 0 : (bounds_zoom_level - 7);
			this.markerManager.addMarkers(this._gmarkersArray(), min_zoom);
			this.markerManager.refresh();

			if (!(this.settings.link_selector === false) && !update){
				this._attachMapsEventToLinks();
			}
		},
		update: function(){
			this.init(true);
		},
		createMap: function(places, bounds){
			this.map = new GMap2(this.map_elm);
			if ($.isFunction(this.settings.map_config)){
				this.settings.map_config.apply(this, [this.map]);
			} else {
				this.map.setMapType(G_NORMAL_MAP);
				this.map.addControl(new GSmallMapControl());
			}
			this.map.centerAndZoomOnBounds(bounds);
		},
		getPlaces: function(){
			return $(this.settings.side_bar_selector+' '+this.settings.location_selector);
		},
		_getPlacesData: function(places){
			var self = this;
			return places.map(function(){
				return $(this).metadata(self.settings.metadata_options);
			});
		},
		_getBounds: function(places){
			var places_data = this._getPlacesData(places);
			var bounds = new GLatLngBounds(
				$.jMapping.makeGLatLng(places_data[0].point),
				$.jMapping.makeGLatLng(places_data[0].point) );

			for (var i=1, len = places_data.length ; i<len; i++) {
				bounds.extend($.jMapping.makeGLatLng(places_data[i].point));
			}
			return bounds;
		},
		_setupLink: function(place_elm){
			var $place_elm = $(place_elm);
			var location_data = $place_elm.metadata(this.settings.metadata_options);
			var link = $place_elm.find(this.settings.link_selector);

			if (link.attr('href').match(/^((\#.*)|(\s*))$/)){
				link.attr('href', ("#" + location_data.id));
			}
		},
		_chooseIconOptions: function(category){
			if (this.settings.category_icon_options){
				if ($.isFunction(this.settings.category_icon_options)){
					return this.settings.category_icon_options.apply(this, [category]);
				} else {
					return this.settings.category_icon_options[category] || this.settings.category_icon_options['default'];
				}
			} else {
				return {};
			}
		},
		_createMarker: function(place_elm){
			var $place_elm = $(place_elm), place_data, point, marker, $info_window_elm;

			place_data = $place_elm.metadata(this.settings.metadata_options);
			point = $.jMapping.makeGLatLng(place_data.point);
			if (this.settings.category_icon_options){
				var custom_icon = MapIconMaker.createMarkerIcon(this._chooseIconOptions(place_data.category));
				marker = new GMarker(point, {
					icon: custom_icon
				});
			} else {
				marker = new GMarker(point);
			}

			$info_window_elm = $place_elm.find(this.settings.info_window_selector);
			if ($info_window_elm.length > 0){
				/*GEvent.addListener(marker, 'mouseover', function() {
					marker.openInfoWindowHtml($info_window_elm.html(), {maxWidth: this.settings.info_window_max_width});
				});*/

				marker.bindInfoWindowHtml(
					$info_window_elm.html(),
					{
						maxWidth: this.settings.info_window_max_width
					}
				);
			}

			this.gmarkers[parseInt(place_data.id, 10)] = marker;
			return marker;
		},
		_attachMapsEventToLinks: function(){
			var self = this;
			var location_link_selector = [
			this.settings.side_bar_selector,
			this.settings.location_selector,
			this.settings.link_selector
			].join(' ');

			$(location_link_selector).live('click', function(e){
				e.preventDefault();
				var marker_index = parseInt($(this).attr('href').split('#')[1], 10);
				GEvent.trigger(self.gmarkers[marker_index], "click");
			});
		},
		_gmarkersArray: function(){
			var marker_arr = [];
			$.each(this.gmarkers, function(key, value){
				marker_arr.push(value);
			});
			return marker_arr;
		}
	};

	$.fn.jMapping = function(options){
		if ((options == 'update') && $(this[0]).data('jMapping')){
			$(this[0]).data('jMapping').update();
		} else {
			if (options == 'update') options = {};
			$(this[0]).data('jMapping', new $.jMapping(this[0], options));
		}
		return this;
	};
})(jQuery);