public IObservable <RangedBeaconResults> WhenBeaconsRanged(params BeaconRegion[] regions) => Observable.Create <RangedBeaconResults>(ob =>
{
var beacons = new Dictionary <string, Beacon>();
var found = new List <Beacon>();
foreach (var region in regions)
{
var native = this.ToNative(region);
this.manager.StartRangingBeacons(native);
}
var handler = new EventHandler <CLRegionBeaconsRangedEventArgs>((sender, args) =>
{
found.Clear();
foreach (var native in args.Beacons)
{
// also very allocatey
var beacon = new Beacon
(
native.ProximityUuid.FromNative(),
native.Major.UInt16Value,
native.Minor.UInt16Value,
native.Accuracy,
this.FromNative(native.Proximity)
);
found.Add(beacon);
}
var region = this.FromNative(args.Region);
//var rbl = new RangedBeaconList(region, list);
//Debug.WriteLine($"[acr.beacons] Ranged {rbl.Beacons.Count} in {rbl.Region}");
//ob.OnNext(rbl);
});
this.manager.DidRangeBeacons += handler;
return(() =>
{
foreach (var region in regions)
{
var native = this.ToNative(region);
this.manager.StopRangingBeacons(native);
}
this.manager.DidRangeBeacons -= handler;
});
});
IObservable <Beacon> Scan()
{
// TODO: switch to background scan
this.beaconScanner = this.beaconScanner ?? Observable
.Create <Beacon>(ob => this.adapter
.Scan()
.Subscribe(sr =>
{
var md = sr.AdvertisementData?.ManufacturerData;
if (md != null && Beacon.IsIBeaconPacket(md))
{
var beacon = Beacon.Parse(md, sr.Rssi);
ob.OnNext(beacon);
}
})
)
.Publish()
.RefCount();
return(this.beaconScanner);
}
public bool IsBeaconInRegion(Beacon beacon)
{
if (!this.Uuid.Equals(beacon.Uuid))
{
return(false);
}
if (this.Major == null && this.Minor == null)
{
return(true);
}
if (this.Major != beacon.Major)
{
return(false);
}
if (this.Minor == null || this.Minor == beacon.Minor)
{
return(true);
}
return(false);
}
protected virtual IEnumerable <BeaconRegionStatus> GetRegionStatesForBeacon(IEnumerable <BeaconRegion> regionList, Beacon beacon)
{
foreach (var region in regionList)
{
var state = this.regionStates[region.ToString()];
if (state.Region.IsBeaconInRegion(beacon))
{
yield return(state);
}
}
}
protected virtual IEnumerable <BeaconRegionStatus> GetRegionStatesForBeacon(IEnumerable <BeaconRegion> regionList, Beacon beacon)
{
var copy = this.regionStates.ToDictionary(x => x.Key, x => x.Value);
foreach (var region in regionList)
{
var state = copy[region.ToString()];
if (state.Region.IsBeaconInRegion(beacon))
{
yield return(state);
}
}
}
