var defaultLocationId="USCO0239";
var _host="www.reumcomputing.com/tools/" 
//var _host="tdf.reumcomputing.com/rci_2009/tools/" 
//city and state of location user searched for
var _cit = "";
var _stat = "";
/*
window.onload = function(){
    document.getElementById("getWeather").onclick=function(){
        getNewLocation();
    }
    getWeather(defaultLocationId);
}*/
/* sample URL:

http://www.parkerriver.com/s/weathxml/weatherSearch?
locId=30066&cc=*&dayf=2&prod=xoap&par=1012144868&licId=67f74aa9fd9cc0e2

real:
http://xoap.weather.com/weather/local/30066?cc=*&dayf=2&prod=xoap&par=1012144868&key=67f74aa9fd9cc0e2

search for location:

http://xoap.weather.com/search/search?where=atlanta 

*/



/* Get the weather XML data for a certain location */
function getWeather(locationId){
    if (locationId == null || locationId.length=="") { return; }		  
	var url = "http://"+_host+"contactFunct.php?locationId="+locationId;
    httpRequest("GET",url,true,handleResponse);
}

function getNewLocation(){
    var val = document.forms.littleton._city.value;
    //alert(val);
    if(val.length != 0){
        _cit = val;
    }  else {
        //we need at least a city to do a search
        return;
    }
    var sval = document.forms.littleton._state.value;
   // alert(sval);
    if(sval.length != 0){
        _stat = sval;
        getLocation(_cit+","+_stat);
    }   else {
        getLocation(_cit);    //We can do a search with only a city name
    }
}

function getNewLocation1(){
//	var val = document.getElementById("vail")._city1.value;
    var val = document.forms.vail._city1.value;
    //alert(val);
    if(val.length != 0){
        _cit = val;
    }  else {
        //we need at least a city to do a search
        return;
    }
    var sval = document.forms.vail._state1.value;
 //  var sval = document.getElementById("vail")._state1.value;
   // alert(sval);
    if(sval.length != 0){
        _stat = sval;
        getLocation(_cit+","+_stat);
    }   else {
        getLocation(_cit);    //We can do a search with only a city name
    }
}

function getNewLocation2(){
    var val = document.forms.telluride._city2.value;
    //alert(val);
    if(val.length != 0){
        _cit = val;
    }  else {
        //we need at least a city to do a search
        return;
    }
    var sval = document.forms.telluride._state2.value;
   // alert(sval);
    if(sval.length != 0){
        _stat = sval;
        getLocation(_cit+","+_stat);
    }   else {
        getLocation(_cit);    //We can do a search with only a city name
    }
}

function getNewLocation3(){
    var val = document.forms.breckenridge._city3.value;
    //alert(val);
    if(val.length != 0){
        _cit = val;
    }  else {
        //we need at least a city to do a search
        return;
    }
    var sval = document.forms.breckenridge._state3.value;
   // alert(sval);
    if(sval.length != 0){
        _stat = sval;
        getLocation(_cit+","+_stat);
    }   else {
        getLocation(_cit);    //We can do a search with only a city name
    }
}
/* parameter can be city alone or city,state combo
as in Boston,MA*/
function getLocation(_lcity){
    if (_lcity == null || _lcity.length=="") {alert("returning"); return; }
    var url = "http://"+_host+"contactFunct.php?city="+_lcity;
    httpRequest("GET",url,true,handleResponse);
	document.getElementById('loading').innerHTML = "<img src=\"images/loading.gif\" alt=\"loading\">";
}

//event handler for XMLHttpRequest
function handleResponse(){
    try{
        if(request.readyState == 4){
            if(request.status == 200){
                var _xml = request.responseXML;
                if(_xml != null){
                    var _root = _xml.documentElement;
					
                    switch(_root.tagName){
                        case "weather":
                            displayWeather(_root); break;
                        case  "search":
                            handleSearchResult(_root); break;
                        case "error" :
                            alert(
                                    "Your weather or location search generated an error. Please try again."); break;
                        default: alert(
                                "Your search generated an unspecified problem. Please try again.");
                    }
                } else {
                    alert("The server returned a null value for the XML. Please try again in a few seconds.");
                }

            } else {
                //request.status is 503  if the application isn't available; 500 if the application has a bug
                alert(
                        "A problem occurred with communicating between the XMLHttpRequest object and the server program.");
            }
        }//end outer if
    } catch (err)   {
       // alert("It does not appear that the server is available for this application. Please"+
       //       " try again very soon. \nError: "+err.message);

    }
}
/* Display the weather based on XML data derived from
weather.com API */
function displayWeather(rootElement){
    if(rootElement != null){
        var loc= rootElement.getElementsByTagName("loc")[0];
        setupToplevel(loc);
        var  dayf = rootElement.getElementsByTagName("dayf")[0];
        setupWeather(dayf);
		 var  cc = rootElement.getElementsByTagName("cc")[0];
		setupCurrentCondidtions(cc);
    }
}

function handleSearchResult(rootEl){
    //call getWeather(locationId)
    var locArray = rootEl.getElementsByTagName("loc");
    var elVal = null;
    for(var i = 0; i < locArray.length; i++){
        elVal = locArray[i].firstChild.nodeValue;
        //if a state was specified in the search, include in
        //the search here
        if(_stat.length != 0){
            if (elVal.toUpperCase() == _cit.toUpperCase()+", "+_stat.toUpperCase()) { 
			getWeather(locArray[i].getAttribute("id"));
			}
        }  else {
            alert("No state in search.");
            //Just return the first result if no state is provided
            getWeather(locArray[i].getAttribute("id"));
            break;
        }
    }

}

function setupToplevel(_element){
    if(_element != null){
        setupElement( _element.getElementsByTagName("dnam")[0],document.getElementById("city_state"),"Location");
        setupElement( _element.getElementsByTagName("tm")[0],document.getElementById("time"),"Time");
        setupElement( _element.getElementsByTagName("lat")[0],document.getElementById("lat"),"Lat");
        setupElement( _element.getElementsByTagName("lon")[0],document.getElementById("lng"),"Long");
        setupElement( _element.getElementsByTagName("sunr")[0],document.getElementById("sunrise"),"Sunrise");
        setupElement( _element.getElementsByTagName("suns")[0],document.getElementById("sunset"),"Sunset");
    }
}

function setupElement(_node,_span,txtMsg)  {
    if(arguments.length == 3){
        _span.innerHTML= txtMsg+": "+_node.firstChild.nodeValue;
    } else {
        _span.innerHTML= _node.firstChild.nodeValue;
    }
}

function setupImgElement(_node,_imgElement)  {
    _imgElement.src="http://"+_host+"sdk/sdk/64x64/"+_node.firstChild.nodeValue+".png";
}

function setupWeather(_element){
    if(_element != null){
        var parts =  _element.getElementsByTagName("part");  /* cntains sub-elements describing day/night weather */
        var dpart = null;
        setupElement( _element.getElementsByTagName("hi")[0],document.getElementById("high"),"high temp");
        setupElement( _element.getElementsByTagName("low")[0],document.getElementById("low"),"low temp");
        for(var i = 0; i < parts.length; i++)   {
            if(parts[i].getAttribute("p") == "d") { dpart=parts[i];}
        }
    }

}


function setupCurrentCondidtions(_element){
    if(_element != null){
   //     var parts =  _element.getElementsByTagName("part");  /* cntains sub-elements describing day/night weather */
        var dpart = null;
		setupImgElement( _element.getElementsByTagName("icon")[0],document.getElementById("w_icon"));
		setupElement(_element.getElementsByTagName("t")[0],document.getElementById("desc"));
		setupElement( _element.getElementsByTagName("tmp")[0],document.getElementById("tmp"),"current temp");
		var _bar = _element.getElementsByTagName("bar")[0];
        setupElement( _bar.getElementsByTagName("r")[0],document.getElementById("bar_r"),"reading");
        setupElement( _bar.getElementsByTagName("d")[0],document.getElementById("bar_d"),"direction");
		var _wind = _element.getElementsByTagName("wind")[0];
        setupElement( _wind.getElementsByTagName("s")[0],document.getElementById("spd_wind"),"wind speed");
        setupElement( _wind.getElementsByTagName("t")[0],document.getElementById("dir_wind"),"wind direction");
		setupElement( _element.getElementsByTagName("hmid")[0],document.getElementById("humid"),"humidity");
		//now show done
		document.getElementById('loading').innerHTML = " ";
    }

}