private async Task UpsertDeviceAsync(MeteringDevice device)
{
var existingDevice = registeredDevices.FirstOrDefault(p => p.DeviceId == device.Id);
if (existingDevice == null)
{
existingDevice = new RegisteredMeter()
{
DeviceId = device.Id
};
}
existingDevice.DeviceIp = device.Ip;
await metersDatabase.UpsertAsync(existingDevice);
await LoadRegisterdDevicesAsync();
}
private async Task <IEnumerable <Reading> > DownloadDeviceDataAsync(RegisteredMeter registeredMeter)
{
try
{
using (var response = await httpClient.GetAsync($"http://{registeredMeter.DeviceIp}:8080/v1/readings"))
{
if (!response.IsSuccessStatusCode)
{
return(Enumerable.Empty <Reading>());
}
var content = await response.Content.ReadAsStringAsync();
var readings = JsonConvert.DeserializeObject <ReadingDto[]>(content);
return(readings.Select(p => new Reading()
{
PM25 = p.PM25,
PM10 = p.PM10,
DeviceName = p.DeviceName,
ClientId = registeredMeter.DeviceId
}));
}
}
catch (Exception)
{
// TODO display toast error or something
return(new[]
{
new Reading()
{
PM25 = "-2",
PM10 = "-2",
DeviceName = "Error",
ClientId = registeredMeter.DeviceId
}
});
}
}
public async Task <int> RemoveMeterAsync(RegisteredMeter registeredMeter) => await _database.DeleteAsync(registeredMeter);
public async Task UpsertAsync(RegisteredMeter registeredMeter) => await _database.InsertOrReplaceAsync(registeredMeter);