public HomeViewModel()
{
Interval = "15";
Title = "Homepage";
_weatherService = Locator.Current.GetService <IWeatherService>();
_dataRepository = Locator.Current.GetService <IDataRepository>();
_backgroundService = Locator.Current.GetService <IBackgroundService>();
GetWeather = ReactiveCommand.CreateFromTask <string, WeatherRoot>(
city => {
if (string.IsNullOrEmpty(city))
{
return(GetWeatherUsingGps());
}
return(_weatherService.GetWeather(city));
});
GetWeather.Subscribe(data => { Output = data; });
_weatherService.NewWeatherUpdate.Subscribe(data => { Output = data; });
_isLoading = GetWeather
.IsExecuting
.ToProperty(this, x => x.IsLoading);
this.WhenValueChanged(x => x.Interval)
.Skip(1) // Skip initial value assignment
.Throttle(TimeSpan.FromSeconds(2))
.Where(x => !string.IsNullOrEmpty(x))
.Subscribe(interval =>
{
_backgroundService.StopJob();
_backgroundService.RunJob(int.Parse(interval));
});
GetWeather.IsExecuting
.Skip(1) // IsExecuting has an initial value of false. We can skip that first value
.Where(isExecuting => !isExecuting) // filter until the executing state becomes false
.Subscribe(_ => {
if (!_backgroundService.IsJobRunning)
{
_backgroundService.RunJob(int.Parse(string.IsNullOrEmpty(Interval) ? "0" : Interval));
}
});
this.WhenValueChanged(x => x.Output)
.Skip(1) // Skip initial value assignment
.DistinctUntilChanged()
.Throttle(TimeSpan.FromSeconds(2))
.Subscribe(data =>
{
var h = data.ToHistory();
h.Id = 1;
_dataRepository.SaveItemAsync(h);
});
}
