public CreateViewModel(INavigationService navigator,
IDialogs dialogs,
IBeaconRangingManager rangingManager,
IBeaconMonitoringManager?monitorManager = null)
{
this.IsMonitoringSupported = monitorManager != null;
this.EstimoteDefaults = ReactiveCommand.Create(() =>
{
this.Identifier = "Estimote";
this.Uuid = "B9407F30-F5F8-466E-AFF9-25556B57FE6D";
});
this.WhenAnyValue(x => x.Major)
.Select(x => !x.IsEmpty() && UInt16.TryParse(x, out _))
.ToPropertyEx(this, x => x.IsMajorSet);
this.StartMonitoring = ReactiveCommand.CreateFromTask(
async() =>
{
var result = await monitorManager.RequestAccess();
if (result != AccessState.Available)
{
await dialogs.AlertAccess(result);
}
else
{
await monitorManager.StartMonitoring(this.GetBeaconRegion());
await navigator.GoBack();
}
},
this.WhenAny(
x => x.Identifier,
x => x.Uuid,
x => x.Major,
x => x.Minor,
x => x.NotifyOnEntry,
x => x.NotifyOnExit,
(idValue, uuidValue, majorValue, minorValue, entry, exit) =>
{
if (monitorManager == null)
{
return(false);
}
var atLeast1Notification = entry.GetValue() || exit.GetValue();
if (!atLeast1Notification)
{
return(false);
}
return(this.IsValid());
}
)
);
this.StartRanging = ReactiveCommand.CreateFromTask(
async() =>
{
var result = await rangingManager.RequestAccess();
if (result != AccessState.Available)
{
await dialogs.AlertAccess(result);
}
else
{
var region = this.GetBeaconRegion();
await navigator.GoBack(false, (nameof(BeaconRegion), region));
}
},
this.WhenAny(
x => x.Identifier,
x => x.Uuid,
x => x.Major,
x => x.Minor,
(idValue, uuidValue, majorValue, minorValue) => this.IsValid()
)
);
}
public static async Task <bool> RequestAccess(this IDialogs dialogs, Func <Task <AccessState> > request)
{
var access = await request();
return(await dialogs.AlertAccess(access));
}