//member functions
//send a call to this device's WLED HTTP API
//API reference: http://apiref.wled.me
public async Task <bool> SendAPICall(string call)
{
string url = "http://" + networkAddress;
if (networkAddress.StartsWith("https://"))
{
url = networkAddress;
}
string response = await DeviceHttpConnection.GetInstance().Send_WLED_API_Call(url, call);
if (response == null)
{
CurrentStatus = DeviceStatus.Unreachable;
return(false);
}
if (response.Equals("err")) //404 or other non-success http status codes, indicates that target is not a WLED device
{
CurrentStatus = DeviceStatus.Error;
return(false);
}
XmlApiResponse deviceResponse = XmlApiResponseParser.ParseApiResponse(response);
if (deviceResponse == null) //could not parse XML API response
{
CurrentStatus = DeviceStatus.Error;
return(false);
}
CurrentStatus = DeviceStatus.Default; //the received response was valid
if (!NameIsCustom)
{
Name = deviceResponse.Name;
}
//only consider brightness if light is on and if it wasn't modified in the same call (prevents brightness slider "jumps")
if (deviceResponse.Brightness > 0 && !call.Contains("A="))
{
brightnessReceived = deviceResponse.Brightness;
BrightnessCurrent = brightnessReceived;
OnPropertyChanged("BrightnessCurrent"); //update slider binding
}
ColorCurrent = deviceResponse.LightColor;
OnPropertyChanged("ColorCurrent");
StateCurrent = deviceResponse.IsOn;
return(true);
}
public static XmlApiResponse ParseApiResponse(string xml)
{
if (xml == null)
{
return(null);
}
XmlApiResponse resp = new XmlApiResponse(); //XmlApiResponse object will contain parsed values
try
{
XElement xe = XElement.Parse(xml);
if (xe == null)
{
return(null);
}
resp.Name = xe.Element("ds")?.Value;
if (resp.Name == null)
{
resp.Name = xe.Element("desc")?.Value; //try legacy XML element name (pre WLED 0.6.0)
}
if (resp.Name == null)
{
return(null); //if we return at this point, parsing was unsuccessful (server likely not WLED device)
}
string bri_s = xe.Element("ac")?.Value;
if (bri_s == null)
{
bri_s = xe.Element("act")?.Value; //try legacy XML element name (pre WLED 0.6.0)
}
if (bri_s != null)
{
int bri = 0;
Int32.TryParse(bri_s, out bri);
resp.Brightness = (byte)bri;
resp.IsOn = (bri > 0); //light is on if brightness > 0
}
double r = 0, g = 0, b = 0;
int counter = 0;
foreach (var el in xe.Elements("cl"))
{
int co = 0;
Int32.TryParse(el?.Value, out co);
switch (counter)
{
case 0: r = co / 255.0; break;
case 1: g = co / 255.0; break;
case 2: b = co / 255.0; break;
}
counter++;
}
resp.LightColor = new Color(r, g, b);
return(resp);
} catch
{
//Exceptions here indicate unsuccessful parsing
}
return(null);
}