addEvent(window, 'load', initialize);

var map;
var gdir;
var geocoder = null;
var addressMarker;
var kilometer;
var k;
var k2;

var booking_fee = 2.00;
var flagfall_fee = 3.20;
var silver_service_fee = 11;
var km_rate = 1.94; 
/* Including Stopping/waiting time at 20% of km rate*/
var maxi_surchg_rate = 50.00;
var night_surchg_rate = 20.00;

var c_btn = null;

var c_type = null;
var f_addr  = null;
var t_addr = null;
var night_schg = null;
var est_fare = null;

function initialize() 
{	
	
	f_addr = id("fromAddress");
	t_addr = id("toAddress");
	c_type = id("CarType");
	night_schg = id("night_surchg");
	est_fare = id("estimated_fair");
	
	c_btn = id('clear_btn');	
	
	addEvent(c_btn, 'click', doClear);
	if (GBrowserIsCompatible()) {      
		map = new GMap2(id("map_canvas"));
		gdir = new GDirections(map, id("directions"));
		
		GEvent.addListener(gdir, "load", onGDirectionsLoad);
		GEvent.addListener(gdir, "error", handleErrors);
		
		setDirections();
	}
}
   
      
function setDirections() 
{
	var fromAddress  = f_addr.value + ' Victoria Australia';
	var toAddress = t_addr.value + ' Victoria Australia';
	var locale = "en_US";
	
  	gdir.load("from: " + fromAddress + " to: " + toAddress, { "locale": locale });
}

function handleErrors()
{
	var message = '';
	var shw_message = '';
	switch (gdir.getStatus().code){
		case G_GEO_UNKNOWN_ADDRESS:
			message = "No corresponding geographic location could be found for one of the specified addresses. This may be due to the fact that the address is relatively new, or it may be incorrect.\nError code: " + gdir.getStatus().code;
			shw_message = "Sorry, we could not find the address you specified."
			break;
		case G_GEO_SERVER_ERROR:
			message = "A geocoding or directions request could not be successfully processed, yet the exact reason for the failure is not known.\n Error code: " + gdir.getStatus().code;
			shw_message = "Sorry, the service is temporarily unavailable."
			break;
		case G_GEO_MISSING_QUERY:
			message = "The HTTP q parameter was either missing or had no value. For geocoder requests, this means that an empty address was specified as input. For directions requests, this means that no query was specified in the input.\n Error code: " + gdir.getStatus().code;
			shw_message = "Sorry, the service is temporarily unavailable."
			break;
		case G_GEO_BAD_KEY:
			message = "The given key is either invalid or does not match the domain for which it was given. \n Error code: " + gdir.getStatus().code;
			shw_message = "Sorry, the service is temporarily unavailable."
			break;
		case G_GEO_BAD_REQUEST:
			message = "A directions request could not be successfully parsed.\n Error code: " + gdir.getStatus().code;
			shw_message = "Sorry, the service is temporarily unavailable."
			break;
		default:
			message = "An unknown error occurred.";
			shw_message = "An unknown error occurred.";			
	}
	
	if (shw_message.length){
		alert(shw_message);
	}
   
}


function onGDirectionsLoad()
{ 
	var dist = gdir.getDistance().html;
	var unit = 'm';
	if (dist.indexOf('km') > 0){
		unit = 'km';
	}
	
	k = dist.split(" ");
	k[k.length-1] = '';
	k2 = k.join();
	k2 = k2.replace(/,/g,"");
	k2 = parseFloat(k2);

	if (unit == 'm'){
		k2 = k2 / 1000.00;
	}

	var fare = (k2 * km_rate);
	if (night_schg.value == 1){
		fare = fare * (1 +  night_surchg_rate/100);
	}
	
	switch (c_type.value){

	    case "Maxi":
	        var fare = fare * (1 + maxi_surchg_rate/100);  
	        break;
	        
	  	case "Silver Service":
	        var fare = fare + silver_service_fee;    	   
	        break;
	               
	    default:
	        break;          
	}
	
	fare +=  (booking_fee + flagfall_fee);
	
	fare = Math.ceil(fare);    
	est_fare.innerHTML = '$' + fare;
}

function doClear()
{
	f_addr.value = '';
	t_addr.value = '';
	est_fare.innerHTML = "$0";
	c_type.selectedIndex = 0;
	night_schg.selectedIndex = 0;
}