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osu-lazer/osu.Game/Screens/OnlinePlay/Components/ListingPollingComponent.cs
2022-06-17 16:37:17 +09:00

81 lines
2.3 KiB
C#

// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
// See the LICENCE file in the repository root for full licence text.
#nullable disable
using System.Linq;
using System.Threading.Tasks;
using osu.Framework.Allocation;
using osu.Framework.Bindables;
using osu.Game.Online.Rooms;
using osu.Game.Screens.OnlinePlay.Lounge.Components;
namespace osu.Game.Screens.OnlinePlay.Components
{
/// <summary>
/// A <see cref="RoomPollingComponent"/> that polls for the lounge listing.
/// </summary>
public class ListingPollingComponent : RoomPollingComponent
{
public IBindable<bool> InitialRoomsReceived => initialRoomsReceived;
private readonly Bindable<bool> initialRoomsReceived = new Bindable<bool>();
public readonly Bindable<FilterCriteria> Filter = new Bindable<FilterCriteria>();
[BackgroundDependencyLoader]
private void load()
{
Filter.BindValueChanged(_ =>
{
RoomManager.ClearRooms();
initialRoomsReceived.Value = false;
if (IsLoaded)
PollImmediately();
});
}
private GetRoomsRequest lastPollRequest;
protected override Task Poll()
{
if (!API.IsLoggedIn)
return base.Poll();
if (Filter.Value == null)
return base.Poll();
var tcs = new TaskCompletionSource<bool>();
lastPollRequest?.Cancel();
var req = new GetRoomsRequest(Filter.Value.Status, Filter.Value.Category);
req.Success += result =>
{
foreach (var existing in RoomManager.Rooms.ToArray())
{
if (result.All(r => r.RoomID.Value != existing.RoomID.Value))
RoomManager.RemoveRoom(existing);
}
foreach (var incoming in result)
{
incoming.RemoveExpiredPlaylistItems();
RoomManager.AddOrUpdateRoom(incoming);
}
initialRoomsReceived.Value = true;
tcs.SetResult(true);
};
req.Failure += _ => tcs.SetResult(false);
API.Queue(req);
lastPollRequest = req;
return tcs.Task;
}
}
}