Fix weather updates for the default location.

1Weather/Model/LocationManager.swift

@@ -20,9 +20,17 @@ public class LocationManager {
     private let deviceLocationMonitor: DeviceLocationMonitor
         
     private let weatherUpdateSource: WeatherSource
-    private let defaultLocation = Location(deviceLocation: false,
+    private var defaultLocation = Location(deviceLocation: false,
                                            coordinates: .init(latitude: 37.3230, longitude: -122.0322), // Cupertino
-                                           timeZone: TimeZone(abbreviation: "PST")!)
+                                           timeZone: TimeZone(abbreviation: "PST")!) {
+        didSet {
+            if locations.count == 0 {
+                self.delegates.invoke { (delegate) in
+                    delegate.locationManager(self, changedSelectedLocation: defaultLocation)
+                }
+            }
+        }
+    }
     
     public enum LocationRequestResult {
         /// User provided us with location permissions, we can use the current location.
@@ -150,10 +158,16 @@ public class LocationManager {
             }
             
             DispatchQueue.main.async {
+                self.log.info("Update weather finished for location: \(location)")
                 if let indexToUpdate = self.locations.firstIndex(where: { $0 == updatedLocation }) {
                     self.locations[indexToUpdate] = updatedLocation
                 }
-                
+                else if self.defaultLocation == updatedLocation {
+                    self.defaultLocation = self.defaultLocation.mergedWith(incrementalChanges: updatedLocation)
+                }
+                else {
+                    self.log.warning("Update weather: Failed to find location after update. Maybe it was deleted while the update was performed. Maybe something went wrong. Location: \(updatedLocation)")
+                }
             }
         }
     }