protected override async Task OnInitializedAsync()
{
try
{
string baseUrl = NavigationManager.BaseUri;
_hubUrl = baseUrl.TrimEnd('/') + "/chatHub";
hubConnection = new HubConnectionBuilder()
.WithUrl(_hubUrl, options =>
{
options.AccessTokenProvider = async() =>
{
var accessTokenResult = await AccessTokenProvider.GetAuthenticationStateAsync();
return(await storage.GetTokenAsync());
};
})
.Build();
hubConnection.On <MessageViewModel>("newMessage", async(message) =>
{
messages.Insert(0, message);
StateHasChanged();
});
hubConnection.On <string>("onError", async(message) =>
{
MessageViewModel msg = new MessageViewModel();
msg.Content = message;
messages.Insert(0, msg);
StateHasChanged();
});
hubConnection.On <UserViewModel>("joinedRoom", async(message) =>
{
inputModel.CurrentRoom = message.CurrentRoom;
messages.Clear();
IList <MessageViewModel> mess = await hubConnection.InvokeAsync <IList <MessageViewModel> >("GetMessageHistory", inputModel.Room);
foreach (var m in mess)
{
messages.Insert(0, m);
}
StateHasChanged();
});
hubConnection.On <UserViewModel>("removeUser", async(message) =>
{
users = await hubConnection.InvokeAsync <IList <UserViewModel> >("GetUsers", message.CurrentRoom);
StateHasChanged();
});
hubConnection.On <UserViewModel>("addUser", async(message) =>
{
users = await hubConnection.InvokeAsync <IList <UserViewModel> >("GetUsers", message.CurrentRoom);
StateHasChanged();
});
hubConnection.On <RoomViewModel>("removeChatRoom", async(message) =>
{
rooms = await hubConnection.InvokeAsync <IList <RoomViewModel> >("GetRooms");
StateHasChanged();
});
hubConnection.On <RoomViewModel>("addChatRoom", async(message) =>
{
rooms = await hubConnection.InvokeAsync <IList <RoomViewModel> >("GetRooms");
StateHasChanged();
});
hubConnection.On <string>("onRoomDeleted", async(message) =>
{
inputModel.Room = "Lobby";
MessageViewModel msg = new MessageViewModel();
msg.Content = $"Room was deleted, you are now moved back to {inputModel.Room}";
messages.Insert(0, msg);
await JoinRoom();
StateHasChanged();
});
await hubConnection.StartAsync();
username = await hubConnection.InvokeAsync <string>("WhoAmI");
inputModel.Room = "Lobby";
inputModel.Recipent = "Room";
rooms = await hubConnection.InvokeAsync <IList <RoomViewModel> >("GetRooms");
await JoinRoom();
}
catch (Exception ex)
{
MessageViewModel msg = new MessageViewModel();
msg.Content = ex.Message;
messages.Insert(0, msg);
}
finally
{
// this.StateHasChanged();
}
}