postit: cache rdv reverse geocoding results

src/PostIt/PostIt/ViewModels/Commands/RdvViewModel.cs

@@ -20,6 +20,9 @@ public partial class RdvViewModel : BillingCommandPageViewModel
     [ObservableProperty]
     public partial string SuggestedAddress { get; set; } = string.Empty;
 
+    [ObservableProperty]
+    public partial bool IsResolvingAddress { get; set; }
+
     [ObservableProperty]
     public partial double? Latitude { get; set; }
 
@@ -37,6 +40,7 @@ public partial class RdvViewModel : BillingCommandPageViewModel
     }
 
     public bool HasSuggestedAddress => !string.IsNullOrWhiteSpace(SuggestedAddress);
+    public bool HasSuggestedAddressPanel => HasSuggestedAddress || IsResolvingAddress;
 
     protected override void ApplyExistingQuery(BillingQueryDetailsDto existingQuery)
     {
@@ -135,6 +139,7 @@ public partial class RdvViewModel : BillingCommandPageViewModel
 
     public void NotifyReverseGeocodingStarted()
     {
+        IsResolvingAddress = true;
         this.SetInfoStatus(string.IsNullOrWhiteSpace(Address)
             ? "Recherche de l'adresse depuis la carte..."
             : "Recherche d'une adresse suggérée..."
@@ -143,6 +148,7 @@ public partial class RdvViewModel : BillingCommandPageViewModel
 
     public void NotifyReverseGeocodingUnavailable()
     {
+        IsResolvingAddress = false;
         if (HasSuggestedAddress || !string.IsNullOrWhiteSpace(Address))
             return;
 
@@ -159,6 +165,7 @@ public partial class RdvViewModel : BillingCommandPageViewModel
         {
             Address = trimmedAddress;
             SuggestedAddress = string.Empty;
+            IsResolvingAddress = false;
             this.SetInfoStatus("Adresse mise à jour depuis la carte.");
             return;
         }
@@ -166,10 +173,12 @@ public partial class RdvViewModel : BillingCommandPageViewModel
         if (string.Equals(Address.Trim(), trimmedAddress, StringComparison.Ordinal))
         {
             SuggestedAddress = string.Empty;
+            IsResolvingAddress = false;
             return;
         }
 
         SuggestedAddress = trimmedAddress;
+        IsResolvingAddress = false;
         this.SetInfoStatus("Adresse suggérée depuis la carte. Appliquez-la si besoin.");
     }
 
@@ -181,15 +190,22 @@ public partial class RdvViewModel : BillingCommandPageViewModel
 
         Address = SuggestedAddress.Trim();
         SuggestedAddress = string.Empty;
+        IsResolvingAddress = false;
         this.SetInfoStatus("Adresse suggérée appliquée.");
     }
 
     partial void OnSuggestedAddressChanged(string value)
     {
         OnPropertyChanged(nameof(HasSuggestedAddress));
+        OnPropertyChanged(nameof(HasSuggestedAddressPanel));
         ApplySuggestedAddressCommand.NotifyCanExecuteChanged();
     }
 
+    partial void OnIsResolvingAddressChanged(bool value)
+    {
+        OnPropertyChanged(nameof(HasSuggestedAddressPanel));
+    }
+
 
     protected override async Task SubmitAsync()
     {

src/PostIt/PostIt/Views/Commands/RdvPage.axaml

@@ -42,9 +42,9 @@
 
       <Grid Grid.Row="7"
         Grid.ColumnSpan="2"
-        ColumnDefinitions="*,12,Auto"
+          ColumnDefinitions="*,12,Auto,12,Auto"
         Margin="0,0,0,8"
-        IsVisible="{Binding HasSuggestedAddress}">
+        IsVisible="{Binding HasSuggestedAddressPanel}">
         <TextBlock Grid.Column="0"
            VerticalAlignment="Center"
            Text="{Binding SuggestedAddress, StringFormat='Adresse suggérée: {0}'}"
@@ -53,6 +53,10 @@
         <Button Grid.Column="2"
             Content="Utiliser"
             Command="{Binding ApplySuggestedAddressCommand}" />
+        <ProgressBar Grid.Column="4"
+               Width="80"
+               IsIndeterminate="True"
+               IsVisible="{Binding IsResolvingAddress}" />
       </Grid>
 
         <Grid Grid.Row="8"

src/PostIt/PostIt/Views/Commands/RdvPage.axaml.cs

@@ -29,6 +29,9 @@ public partial class RdvPage : ContentPage
     private RdvViewModel? _currentViewModel;
     private readonly IReverseGeocodingService _reverseGeocodingService;
     private CancellationTokenSource? _reverseGeocodeCts;
+    private double? _lastResolvedLatitude;
+    private double? _lastResolvedLongitude;
+    private string? _lastResolvedAddress;
 
     public RdvPage()
         : this(null)
@@ -180,6 +183,14 @@ public partial class RdvPage : ContentPage
 
     private async Task TryResolveAddressAsync(RdvViewModel vm, double latitude, double longitude)
     {
+        if (_lastResolvedLatitude == latitude
+            && _lastResolvedLongitude == longitude
+            && !string.IsNullOrWhiteSpace(_lastResolvedAddress))
+        {
+            vm.ApplyResolvedAddress(_lastResolvedAddress);
+            return;
+        }
+
         _reverseGeocodeCts?.Cancel();
         _reverseGeocodeCts?.Dispose();
         _reverseGeocodeCts = new CancellationTokenSource();
@@ -196,6 +207,9 @@ public partial class RdvPage : ContentPage
 
             if (!string.IsNullOrWhiteSpace(resolved))
             {
+                _lastResolvedLatitude = latitude;
+                _lastResolvedLongitude = longitude;
+                _lastResolvedAddress = resolved;
                 vm.ApplyResolvedAddress(resolved);
                 return;
             }
@@ -204,6 +218,7 @@ public partial class RdvPage : ContentPage
         }
         catch (OperationCanceledException)
         {
+            vm.IsResolvingAddress = false;
         }
     }
 }