public RoomViewModel(Room room)
{
if (room == null)
throw new ArgumentNullException("room");
this.Room = room;
}
public async Task SmokeTest()
{
await BlobCache.Secure.SaveLogin("Gitter", "TheAccessToken", "Gitter");
var room = new Room { name = "TheRoom", id = "TheRoomId" };
var api = Substitute.For<IGitterApi>();
api.GetMessages(Arg.Any<string>(), Arg.Any<string>()).Returns(Observable.Return((IReadOnlyList<Message>)new List<Message>()));
var fixture = new MessagesViewModel(room, api, Substitute.For<IScreen>());
await fixture.LoadMessages.ExecuteAsync();
fixture.MessageText = "TheMessage";
await fixture.SendMessage.ExecuteAsync();
api.Received(1).SendMessage(room.id, Arg.Is<SendMessage>(x => x.Text == "TheMessage"), "Bearer TheAccessToken");
}
public async Task ClearsMessageTextAfterSending()
{
await BlobCache.Secure.SaveLogin("Gitter", "TheAccessToken", "Gitter");
var room = new Room { name = "TheRoom", id = "TheRoomId" };
var api = Substitute.For<IGitterApi>();
api.GetMessages(Arg.Any<string>(), Arg.Any<string>()).Returns(Observable.Return((IReadOnlyList<Message>)new List<Message>()));
var fixture = new MessagesViewModel(room, api, Substitute.For<IScreen>());
await fixture.LoadMessages.ExecuteAsync();
fixture.MessageText = "TheMessage";
await fixture.SendMessage.ExecuteAsync();
Assert.IsEmpty(fixture.MessageText);
}
public async Task CanExecuteWhenMessageIsNotNullOrEmpty()
{
await BlobCache.Secure.SaveLogin("Gitter", "TheAccessToken", "Gitter");
var room = new Room { name = "TheRoom", id = "TheRoomId" };
var api = Substitute.For<IGitterApi>();
api.GetMessages(Arg.Any<string>(), Arg.Any<string>()).Returns(Observable.Return((IReadOnlyList<Message>)new List<Message>()));
var fixture = new MessagesViewModel(room, api, Substitute.For<IScreen>());
await fixture.LoadMessages.ExecuteAsync();
fixture.MessageText = "TheMessage";
Assert.True(fixture.SendMessage.CanExecute(null));
fixture.MessageText = null;
Assert.False(fixture.SendMessage.CanExecute(null));
fixture.MessageText = String.Empty;
Assert.False(fixture.SendMessage.CanExecute(null));
fixture.MessageText = " ";
Assert.False(fixture.SendMessage.CanExecute(null));
}
public MessagesViewModel(Room room, IGitterApi api = null, IScreen hostScreen = null)
{
this.HostScreen = hostScreen ?? Locator.Current.GetService<IScreen>();
this.Messages = new ReactiveList<MessageViewModel>();
this.UrlPathSegment = room.name;
IObservable<string> accessToken = GitterApi.GetAccessToken().PublishLast().RefCount();
this.LoadMessages = ReactiveCommand.CreateAsyncObservable(_ => accessToken.SelectMany(token => (api ?? GitterApi.UserInitiated).GetMessages(room.id, token)));
this.Users = new ReactiveList<UserViewModel>();
this.LoadUsers = ReactiveCommand.CreateAsyncObservable(_ => accessToken
.SelectMany(token => (api ?? GitterApi.UserInitiated).GetRoomUsers(room.id, token))
.Select(users => users.OrderBy(user => user.displayName, StringComparer.CurrentCulture).Select(user => new UserViewModel(user))));
this.LoadUsers.Subscribe(x =>
{
using (this.Users.SuppressChangeNotifications())
{
this.Users.Clear();
this.Users.AddRange(x);
}
});
this.SendMessage = ReactiveCommand.CreateAsyncTask(this.WhenAnyValue(x => x.MessageText, x => !String.IsNullOrWhiteSpace(x)), async _ =>
{
await (api ?? GitterApi.UserInitiated).SendMessage(room.id, new SendMessage(this.MessageText), await accessToken);
this.MessageText = String.Empty;
});
this.LoadMessages.FirstAsync().SelectMany(x => x.ToObservable())
.Concat(this.StreamMessages(room.id))
.Select(x => new MessageViewModel(x))
.Subscribe(x =>
{
this.Messages.Insert(0, x);
});
}
