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Code Issues 4 Pull requests Projects 2 Releases 34 Packages Wiki Activity Actions

feat(chat): envoi de messages dans un salon joint

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- DTO ChatMessage (Name/Room/Message) pour l'evenement ReceiveMessage
- ChatViewModel : MessageToSend, HasJoinedRoom, handler ReceiveMessage,
  SendMessageCommand (CanExecute: connecte + salon joint + texte non vide)
- ChatPage : TextBox de saisie (Enter envoie) + bouton Envoyer,
  StatusBar repositionnee en Grid.Row=3
This commit is contained in:
Paul Schneider 2026-10-03 23:55:03 +01:00
commit 51e445b5ba
Signed by: notazof
GPG key ID: AD4B9B545FBD7D12
3 changed files with 81 additions and 2 deletions
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40
src/PostIt/PostIt/ViewModels/Chat/ChatViewModel.cs
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@ -45,8 +45,17 @@ namespace PostIt.ViewModels.Chat
public partial StatusNotice Status { get; set; }
[ObservableProperty]
[NotifyCanExecuteChangedFor(nameof(SendMessageCommand))]
public partial bool IsConnected { get; set; } = false;
[ObservableProperty]
[NotifyCanExecuteChangedFor(nameof(SendMessageCommand))]
public partial bool HasJoinedRoom { get; set; } = false;
[ObservableProperty]
[NotifyCanExecuteChangedFor(nameof(SendMessageCommand))]
public partial string MessageToSend { get; set; } = "";
// Listes dynamiques pour l'UI
public ObservableCollection<string> Messages { get; } = new();
public ObservableCollection<string> ConnectedUsers { get; } = new();
@ -58,6 +67,28 @@ namespace PostIt.ViewModels.Chat
[RelayCommand]
public async Task JoinRoomCommand() => await JoinRoomAsync();
// Le serveur (ChatHub.Send) refuse tout message d'un utilisateur
// qui n'a pas joint le salon ("NoJoinNoSend") : on garde la
// commande inactive tant que le Join n'a pas abouti.
private bool CanSendMessage() =>
IsConnected && HasJoinedRoom && !string.IsNullOrWhiteSpace(MessageToSend);
[RelayCommand(CanExecute = nameof(CanSendMessage))]
private async Task SendMessageAsync()
{
if (_connection == null) return;
var text = MessageToSend.Trim();
try
{
await _connection.InvokeAsync("Send", CurrentRoom, text);
MessageToSend = string.Empty;
}
catch (Exception ex)
{
Messages.Add($"Erreur d'envoi : {ex.Message}");
}
}
public override bool CanNavigateNext { get; protected set; } = false;
public override bool CanNavigatePrevious { get; protected set; } = true;
@ -70,6 +101,7 @@ namespace PostIt.ViewModels.Chat
_connection = null;
}
IsConnected = false;
HasJoinedRoom = false;
Status = new StatusNotice("Déconnecté", StatusSeverity.Info,
new RelayCheckCommand("Connecter", async () => await ConnectAsync()));
}
@ -140,11 +172,19 @@ namespace PostIt.ViewModels.Chat
Avalonia.Threading.Dispatcher.UIThread.Post(() =>
{
Messages.Add($"Salon rejoint avec succès : {roomInfo.Name}");
HasJoinedRoom = true;
ConnectedUsers.Clear();
foreach (var u in roomInfo.Users) ConnectedUsers.Add(u);
});
});
// 4. Réception des messages du salon (diffusés par ChatHub.Send)
_connection.On<ChatMessage>("ReceiveMessage", (msg) =>
{
Avalonia.Threading.Dispatcher.UIThread.Post(() =>
Messages.Add($"[{msg.Room}] {msg.Name} : {msg.Message}"));
});
await _connection.StartAsync();
IsConnected = true;
Status = new StatusNotice("Connecté au Hub SignalR", StatusSeverity.Info, new RelayCheckCommand("Déconnecter", async () => await DisconnectAsync()));