public async Task <DeviceStateInfo> AddOrUpdate(RequestContext requestContext)
{
string deviceId = GetDeviceId(requestContext.Data);
string deviceType = GetDeviceType(requestContext.Data);
DeviceTypeProvider deviceTypeProvider = _deviceTypeProviders.Find(dtp => dtp.DeviceType == deviceType);
if (deviceTypeProvider != null)
{
DeviceStateInfo state;
Device device = _devices.Find(d => d.DeviceId == deviceId);
if (device != null)
{
state = await UpdateDevice(requestContext, deviceTypeProvider, device).ConfigureAwait(false);
}
else
{
state = await CreateAndAddDevice(requestContext, deviceTypeProvider).ConfigureAwait(false);
_devices.Add(state.Device);
}
return(state);
}
else
{
throw new Exception("DeviceTypeProvider not found.");
}
}
public async Task FetchAsync()
{
_deviceTypeProvider = _deviceTypeProvider ?? this.GetDeviceTypeProvider();
string str = await SendCommand(Commands.GetSysInfo).ConfigureAwait(false);
Newtonsoft.Json.Linq.JObject obj = ParseGetSysInfo(str);
var requestContext = new RequestContext(obj, IPAddress);
await _deviceTypeProvider.UpdateDevice(this, requestContext).ConfigureAwait(false);
}
public void RegisterDeviceTypeProvider(DeviceTypeProvider deviceTypeProvider)
{
_deviceTypeProviders.Add(deviceTypeProvider);
}
private static async Task <DeviceStateInfo> CreateAndAddDevice(RequestContext requestContext, DeviceTypeProvider deviceTypeProvider)
{
Device device = await deviceTypeProvider
.CreateDevice(requestContext)
.ConfigureAwait(false);
return(new DeviceStateInfo(device, DeviceState.Added));
}
private static async Task <DeviceStateInfo> UpdateDevice(RequestContext requestContext, DeviceTypeProvider deviceTypeProvider, Device device)
{
bool hasChanged = await deviceTypeProvider.UpdateDevice(device, requestContext).ConfigureAwait(false);
return(new DeviceStateInfo(device, hasChanged ? DeviceState.Updated : DeviceState.Unchanged));
}