global class ZillowCallout{
    
    //  @future (callout=true) 
    public static void getFields(Id lid) {
        string zwsid = 'X1-ZWz188ya5jca2z_4hjdy';
        Lead l=[select id,Name,Street,City,State,PostalCode from Lead where id=:lid];
        string addy = l.Street;
        string citystatezip = l.City + ',' + l.State + ',' + l.PostalCode;  
        //Construct HTTP request and response
        //Http request method, Header, and Endpoint
        HttpRequest req = new HttpRequest();
        req.setEndpoint('http://www.zillow.com/webservice/GetDeepSearchResults.htm?zws-id=' + zwsid + '&address=' + addy + '&citystatezip=' + citystatezip);  
        req.setMethod('GET');  
        req.setHeader('Content-Type','application/json');
        req.setHeader('Authorization', 'BASIC' + 'X1-ZWz188ya5jca2z_4hjdy'); 
        //Http response method 
        Http http = new Http();
        HTTPResponse res = http.send(req);
        string respoXML = res.getBody();
        //System.debug(respoXML);
        if(res.getStatusCode() < 300) {  
            
            ResponseModel rm = new ResponseModel() ;
            
            Dom.Document doc = new Dom.Document();
            doc.load(respoXML);//Here xmlstring data is from the above XML shown above 
            //Retrieve the root element for this document.
            Dom.XMLNode node= doc.getRootElement();
            
            Dom.XMLNode[] childs = node.getChildElements() ;
            for(Dom.XmlNode nod :childs){
                Dom.XMLNode[] childs1= nod.getChildElements() ;
                for(Dom.XmlNode nod1 :childs1){
                    // System.debug('-->'+nod1.getText()+'--Key'+nod1.getName());
                    for(Dom.XmlNode nod11 :nod1.getChildElements()){
                        //   Dom.XmlNode[] finalLevel = nod11.getChildren();
                        for(Dom.XmlNode finalLevel12 :nod11.getChildElements()){
                            if(finalLevel12.getName()=='bedrooms'){
                                rm.Bedrooms  =Decimal.valueOf( finalLevel12.getText());
                            }
                            if(finalLevel12.getName()=='bathrooms'){
                                rm.Bathrooms  =  Decimal.valueOf(finalLevel12.getText());
                                
                            }
                        }
                        
                        
                    }
                }
            }
            
            System.debug('rmrmrm'+rm);  
            
            l.Bathrooms__c = rm.Bathrooms;
            l.Bedrooms__c = rm.Bedrooms;   
            
            update l ;
            
        }
        else {
            //l.responseErrorBody__c = 'Time: ' +system.now() +' - ' +responseJSON;    
            update l;   
        }
    }
    //This inner class is to handle the mapping in reference to the response.
    public class ResponseModel{
        public Decimal Bathrooms{get;set;}
        public Decimal Bedrooms{get;set;}
    }
    
}