spare page #2

/*!
 * jQuery Map Calculator - A Map Distance calculator for Lee Sadler
 *
 *
 * @author  : Serdar Sanri
 * @doc     : http://serdarsanri.com
 * @version : 1.0.0
 *
 */

;
(function($) {
  'use strict';
	var oMapCalculator = function(){}
	oMapCalculator.prototype = {
		map : null,
		origin : null,
		directionsService : null,
		directiondisplay : null,
		directionsdisplays : [],
		polylines : [],
		totals : {},
		defaults : {
			base : [51.345142, 0.009356],
			zoom : 10,
			currency : '',
			target : '',
			map : '',
			button : "",
			total_price_only : '',
			total_price_wo_vat : "",
			total_distance : "",
			api_key : '',
			vat : 20
		},
		options : {},
		init : function(el, options){
			var obj = this;
			this.options = $.extend({}, this.defaults, options, $(el).data() );
			this.$el = $(el);
			this.$target = $(this.options.target);
			this.$map = $(this.options.map);
			this.$result = $(this.options.result);
			if(typeof google == "undefined")
				$.getScript("//maps.googleapis.com/maps/api/js?key=" + this.options.api_key , function(){
					obj.initMap();
				});
			else
				obj.initMap();
		},
		initMap : function(){
			var obj = this;
			this.origin = new google.maps.LatLng(this.options.base[0], this.options.base[1]);
			this.map = new google.maps.Map( $(this.$map)[0] , {
				zoom: this.options.zoom,
				center: this.origin,
			});
			$(document.body).on("click" ,this.options.button , function(){
				obj.calculateAndDisplayRoute(obj);
			});
		},
		calculateAndDisplayRoute : function(obj) {
			if( obj.directiondisplay!=null ){
				obj.directiondisplay.setMap(null);
				obj.directiondisplay = null;
			}
			obj.directiondisplay = new google.maps.DirectionsRenderer;
			obj.directionsService = new google.maps.DirectionsService;
			obj.directionsService.route({
				origin: obj.origin,
				destination: obj.$target.val(),
				travelMode: google.maps.TravelMode.DRIVING,
				provideRouteAlternatives: true,
				optimizeWaypoints:true,
			}, function(response, status) {
				if (status === google.maps.DirectionsStatus.OK) {
					obj.directiondisplay.setDirections(response);
					obj.directiondisplay.setMap(obj.map);
					obj.renderDirectionsPolylines(response);
				} else {
					window.alert('Directions request failed due to ' + status);
				}
			});
		},
		renderDirectionsPolylines : function(response) {
			var obj = this;
			obj.polylines = [];
			obj.totals = {duration : 0, distance : 0 , price : 0};
			var legs = response.routes[0].legs;

			for (var i = 0; i < legs.length; i++) {
				var steps = legs[i].steps;
				for (var j = 0; j < steps.length; j++) {
					obj.totals.distance += (steps[j].distance.value) * 0.000621371;
					obj.totals.duration += steps[j].duration.value;
				}
			}
			if( obj.totals.distance <= 3 ) obj.totals.price = 5;
			if( obj.totals.distance >3 ) obj.totals.price = 5 + obj.totals.price  + ( ( obj.totals.distance - 3 ) * 1.5  );

			$( obj.options.total_price_only).html(obj.options.currency + "" + ( obj.totals.price * ( obj.options.vat +100)/100 ).toFixed(2) );
			$( obj.options.total_price_wo_vat).html(obj.options.currency + "" + ( obj.totals.price  ).toFixed(2) + " + <small>%"+obj.options.vat+" VAT</small>" );
			$( obj.options.total_distance).html( obj.totals.distance.toFixed(2)+ " miles");

		}
	}
	$.fn.MapCalculator = function(options){
		return this.each( function(){
			if( typeof $(this).data('MapCalculator')=="undefined" ) {
				var mp = new oMapCalculator();
					mp.init(this , options);
				$(this).data('MapCalculator' , mp);
				return mp;
			}
			return $(this).data('MapCalculator');
		} );
	}

})(jQuery);