Send location uncertainty within a geo uri (#1309)

* Add uncertainty

* Add UTs

* Delete verticalAccuracy

ElementX/Sources/Other/MapLibre/MapLibreMapView.swift

@@ -57,6 +57,9 @@ struct MapLibreMapView: UIViewRepresentable {
     @Binding var mapCenterCoordinate: CLLocationCoordinate2D?
 
     @Binding var isLocationAuthorized: Bool?
+
+    // The radius of uncertainty for the location, measured in meters.
+    @Binding var geolocationUncertainty: CLLocationAccuracy?
     
     /// Called when the user pan on the map
     var userDidPan: (() -> Void)?
@@ -155,6 +158,7 @@ extension MapLibreMapView {
             }
 
             previousUserLocation = userLocation
+            updateGeolocationUncertainty(location: userLocation)
         }
         
         func mapView(_ mapView: MGLMapView, didChangeLocationManagerAuthorization manager: MGLLocationManager) {
@@ -176,13 +180,7 @@ extension MapLibreMapView {
                 mapLibreView.mapCenterCoordinate = mapView.centerCoordinate
             }
         }
-        
+
-        // MARK: Callout
-                
-        func mapView(_ mapView: MGLMapView, annotationCanShowCallout annotation: MGLAnnotation) -> Bool {
-            false
-        }
-        
         func mapView(_ mapView: MGLMapView, shouldChangeFrom oldCamera: MGLMapCamera, to newCamera: MGLMapCamera, reason: MGLCameraChangeReason) -> Bool {
             // we send the userDidPan event only for the reasons that actually will change the map center, and not zoom only / rotations only events.
             switch reason {
@@ -203,6 +201,23 @@ extension MapLibreMapView {
             }
             return true
         }
+
+        // MARK: Callout
+
+        func mapView(_ mapView: MGLMapView, annotationCanShowCallout annotation: MGLAnnotation) -> Bool {
+            false
+        }
+
+        // MARK: Private
+
+        private func updateGeolocationUncertainty(location: MGLUserLocation) {
+            guard let clLocation = location.location, clLocation.horizontalAccuracy >= 0 else {
+                mapLibreView.geolocationUncertainty = nil
+                return
+            }
+
+            mapLibreView.geolocationUncertainty = clLocation.horizontalAccuracy
+        }
     }
 }
 

ElementX/Sources/Screens/LocationSharing/LocationSharingScreenModels.swift

@@ -109,6 +109,7 @@ struct StaticLocationScreenViewState: BindableState {
 
 struct StaticLocationScreenBindings {
     var mapCenterLocation: CLLocationCoordinate2D?
+    var geolocationUncertainty: CLLocationAccuracy?
 
     var showsUserLocationMode: ShowUserLocationMode
     

ElementX/Sources/Screens/LocationSharing/StaticLocationScreenViewModel.swift

@@ -36,7 +36,8 @@ class StaticLocationScreenViewModel: StaticLocationScreenViewModelType, StaticLo
             actionsSubject.send(.close)
         case .selectLocation:
             guard let coordinate = state.bindings.mapCenterLocation else { return }
-            actionsSubject.send(.sendLocation(.init(coordinate: coordinate), isUserLocation: state.isSharingUserLocation))
+            let uncertainty = state.isSharingUserLocation ? context.geolocationUncertainty : nil
+            actionsSubject.send(.sendLocation(.init(coordinate: coordinate, uncertainty: uncertainty), isUserLocation: state.isSharingUserLocation))
         case .userDidPan:
             state.bindings.showsUserLocationMode = .show
         case .centerToUser:

ElementX/Sources/Screens/LocationSharing/View/StaticLocationScreen.swift

@@ -47,10 +47,12 @@ struct StaticLocationScreen: View {
                             showsUserLocationMode: $context.showsUserLocationMode,
                             error: $context.mapError,
                             mapCenterCoordinate: $context.mapCenterLocation,
-                            isLocationAuthorized: $context.isLocationAuthorized) {
+                            isLocationAuthorized: $context.isLocationAuthorized,
+                            geolocationUncertainty: $context.geolocationUncertainty) {
                 context.send(viewAction: .userDidPan)
             }
             .ignoresSafeArea(.all, edges: mapSafeAreaEdges)
+
             if context.viewState.isLocationPickerMode {
                 LocationMarkerView()
             }

ElementX/Sources/Services/Timeline/GeoURI.swift

@@ -78,8 +78,8 @@ private extension RegexGeoURI {
 }
 
 extension GeoURI {
-    init(coordinate: CLLocationCoordinate2D) {
+    init(coordinate: CLLocationCoordinate2D, uncertainty: CLLocationAccuracy?) {
-        self.init(latitude: coordinate.latitude, longitude: coordinate.longitude)
+        self.init(latitude: coordinate.latitude, longitude: coordinate.longitude, uncertainty: uncertainty)
     }
 }
 

UnitTests/Sources/StaticLocationScreenViewModelTests.swift

@@ -76,4 +76,31 @@ class StaticLocationScreenViewModelTests: XCTestCase {
         let authorizationError = AlertInfo(locationSharingViewError: .missingAuthorization)
         XCTAssertEqual(authorizationError.message, L10n.errorMissingLocationAuth(InfoPlistReader.main.bundleDisplayName))
     }
+
+    func testSendUserLocation() async throws {
+        context.mapCenterLocation = .init(latitude: 0, longitude: 0)
+        context.geolocationUncertainty = 10
+        let deferred = deferFulfillment(viewModel.actions.first())
+        context.send(viewAction: .selectLocation)
+        guard case .sendLocation(let geoUri, let isUserLocation) = try await deferred.fulfill() else {
+            XCTFail("Sent action should be 'sendLocation'")
+            return
+        }
+        XCTAssertEqual(geoUri.uncertainty, 10)
+        XCTAssertTrue(isUserLocation)
+    }
+
+    func testSendPickedLocation() async throws {
+        context.mapCenterLocation = .init(latitude: 0, longitude: 0)
+        context.isLocationAuthorized = nil
+        context.geolocationUncertainty = 10
+        let deferred = deferFulfillment(viewModel.actions.first())
+        context.send(viewAction: .selectLocation)
+        guard case .sendLocation(let geoUri, let isUserLocation) = try await deferred.fulfill() else {
+            XCTFail("Sent action should be 'sendLocation'")
+            return
+        }
+        XCTAssertEqual(geoUri.uncertainty, nil)
+        XCTAssertFalse(isUserLocation)
+    }
 }