Swift and Soap Web Service

Swift and Soap Web Service

//
//  Call a soap web service
//

// Add
// NSURLConnectionDelegate
// NSXMLParserDelegate
class MapViewController: UIViewController, MKMapViewDelegate, CLLocationManagerDelegate, NSURLConnectionDelegate, NSXMLParserDelegate{
    @IBOutlet weak var mapKit: MKMapView!
    var wsUrl : String = "http://mobilewebservice.greenmotion.ch/MobileEvpass.asmx"
    var mutableData:NSMutableData  = NSMutableData.alloc()
    var currentElementName:NSString = ""
    var lastElementName:NSString = ""
    let lastNodeName = "Latitude"
    let firstNodeName = "Longitude"

    var chargingStation = ChargingStation()
    var chargingStations = [ChargingStation]()
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        // Web services
        var date = NSDate().ToShortDateTime()
        var password = "656214CDD7C0782AF86531326D0AE048"
        var hash = (password+date).MD5()
        var methodName = "GetChargingStationsList"
        var userId = 1
        
        var text = String(format: "<?xml version='1.0' encoding='utf-8'?><soap:Envelope xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xsd='http://www.w3.org/2001/XMLSchema' xmlns:soap='http://schemas.xmlsoap.org/soap/envelope/'><soap:Body><%@ xmlns='http://tempuri.org/'><userId>%d</userId><date>%@</date><hash>%@</hash></%@></soap:Body></soap:Envelope>", methodName, userId, date, hash, methodName)
        
        var soapMessage = text
        var url = NSURL(string: wsUrl)
        var theRequest = NSMutableURLRequest(URL: url!)
        var msgLength = String(countElements(soapMessage))
        
        theRequest.addValue("text/xml; charset=utf-8", forHTTPHeaderField: "Content-Type")
        theRequest.addValue(msgLength, forHTTPHeaderField: "Content-Length")
        theRequest.HTTPMethod = "POST"
        theRequest.HTTPBody = soapMessage.dataUsingEncoding(NSUTF8StringEncoding, allowLossyConversion: false) // or false
        
        var connection = NSURLConnection(request: theRequest, delegate: self, startImmediately: true)
        connection?.start()
        
        if(connection == true){
            var mutableData : Void = NSMutableData.initialize()
        }
    }
  
    // MARK: - Web Service
    
    func connection(connection: NSURLConnection!, didReceiveResponse response: NSURLResponse!) {
        mutableData.length = 0;
    }
    
    func connection(connection: NSURLConnection!, didReceiveData data: NSData!) {
        mutableData.appendData(data)
    }
    
    // Parse the result right after loading
    func connectionDidFinishLoading(connection: NSURLConnection!) {
        println(mutableData)
        var xmlParser = NSXMLParser(data: mutableData)
        xmlParser.delegate = self
        xmlParser.shouldProcessNamespaces = false
        xmlParser.shouldReportNamespacePrefixes = false
        xmlParser.shouldResolveExternalEntities = false
        xmlParser.parse()
    }
    
    // NSXMLParserDelegate
  
  // Operation to do when a new element is parsed
    func parser(parser: NSXMLParser!, didStartElement elementName: String!, namespaceURI: String!, qualifiedName qName: String!, attributes attributeDict: NSDictionary!) {
        if(elementName != nil){
            lastElementName = currentElementName
            currentElementName = elementName
            
            if(elementName == firstNodeName){
                chargingStation = ChargingStation()
            }
        }
        println(String(format : "didStartElement / elementName %@", elementName))
    }
    
    // Operations to do for each element
    func parser(parser: NSXMLParser!, foundCharacters string: String!) {
        println(String(format : "foundCharacters / value %@", string))
        if(string != nil){
            if currentElementName == "Longitude" {
                chargingStation.longitude = (string as NSString).doubleValue
            }
            if currentElementName == "Latitude" {
                chargingStation.latitude = (string as NSString).doubleValue
            }
        }
    }
    
    // Add the data to a mutable array of objects
    func parser(parser: NSXMLParser!, didEndElement elementName: String!, namespaceURI: String!, qualifiedName qName: String!) {
        println(String(format : "didEndElement / elementName %@", elementName))
        if(elementName == lastNodeName){
            chargingStations.append(chargingStation)
        }
    }
    
    // Operations to do when the result has been parsed
    func parserDidEndDocument(parser: NSXMLParser!) {
        println("parserDidEndDocument")
        println(chargingStations.count)
        println("parserDidEndDocument")
        addAnnotations()
    }
}