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using Ryujinx.Common;
using Ryujinx.HLE.HOS.Ipc;
using Ryujinx.HLE.HOS.Kernel.Threading;
using Ryujinx.HLE.HOS.Services.Account.Acc;
using Ryujinx.HLE.HOS.Services.Friend.ServiceCreator.NotificationService;
using Ryujinx.Horizon.Common;
using System;
using System.Collections.Generic;
namespace Ryujinx.HLE.HOS.Services.Friend.ServiceCreator
{
class INotificationService : DisposableIpcService
{
private readonly UserId _userId;
private readonly FriendServicePermissionLevel _permissionLevel;
private readonly object _lock = new();
private readonly KEvent _notificationEvent;
private int _notificationEventHandle = 0;
private readonly LinkedList<NotificationInfo> _notifications;
private bool _hasNewFriendRequest;
private bool _hasFriendListUpdate;
public INotificationService(ServiceCtx context, UserId userId, FriendServicePermissionLevel permissionLevel)
{
_userId = userId;
_permissionLevel = permissionLevel;
_notifications = new LinkedList<NotificationInfo>();
_notificationEvent = new KEvent(context.Device.System.KernelContext);
_hasNewFriendRequest = false;
_hasFriendListUpdate = false;
NotificationEventHandler.Instance.RegisterNotificationService(this);
}
[CommandCmif(0)] //2.0.0+
// nn::friends::detail::ipc::INotificationService::GetEvent() -> handle<copy>
public ResultCode GetEvent(ServiceCtx context)
{
if (_notificationEventHandle == 0)
{
if (context.Process.HandleTable.GenerateHandle(_notificationEvent.ReadableEvent, out _notificationEventHandle) != Result.Success)
{
throw new InvalidOperationException("Out of handles!");
}
}
context.Response.HandleDesc = IpcHandleDesc.MakeCopy(_notificationEventHandle);
return ResultCode.Success;
}
[CommandCmif(1)] //2.0.0+
// nn::friends::detail::ipc::INotificationService::Clear()
public ResultCode Clear(ServiceCtx context)
{
lock (_lock)
{
_hasNewFriendRequest = false;
_hasFriendListUpdate = false;
_notifications.Clear();
}
return ResultCode.Success;
}
[CommandCmif(2)] // 2.0.0+
// nn::friends::detail::ipc::INotificationService::Pop() -> nn::friends::detail::ipc::SizedNotificationInfo
public ResultCode Pop(ServiceCtx context)
{
lock (_lock)
{
if (_notifications.Count >= 1)
{
NotificationInfo notificationInfo = _notifications.First.Value;
_notifications.RemoveFirst();
if (notificationInfo.Type == NotificationEventType.FriendListUpdate)
{
_hasFriendListUpdate = false;
}
else if (notificationInfo.Type == NotificationEventType.NewFriendRequest)
{
_hasNewFriendRequest = false;
}
context.ResponseData.WriteStruct(notificationInfo);
return ResultCode.Success;
}
}
return ResultCode.NotificationQueueEmpty;
}
public void SignalFriendListUpdate(UserId targetId)
{
lock (_lock)
{
if (_userId == targetId)
{
if (!_hasFriendListUpdate)
{
NotificationInfo friendListNotification = new();
if (_notifications.Count != 0)
{
friendListNotification = _notifications.First.Value;
_notifications.RemoveFirst();
}
friendListNotification.Type = NotificationEventType.FriendListUpdate;
_hasFriendListUpdate = true;
if (_hasNewFriendRequest)
{
NotificationInfo newFriendRequestNotification = new();
if (_notifications.Count != 0)
{
newFriendRequestNotification = _notifications.First.Value;
_notifications.RemoveFirst();
}
newFriendRequestNotification.Type = NotificationEventType.NewFriendRequest;
_notifications.AddFirst(newFriendRequestNotification);
}
// We defer this to make sure we are on top of the queue.
_notifications.AddFirst(friendListNotification);
}
_notificationEvent.ReadableEvent.Signal();
}
}
}
public void SignalNewFriendRequest(UserId targetId)
{
lock (_lock)
{
if ((_permissionLevel & FriendServicePermissionLevel.ViewerMask) != 0 && _userId == targetId)
{
if (!_hasNewFriendRequest)
{
if (_notifications.Count == 100)
{
SignalFriendListUpdate(targetId);
}
NotificationInfo newFriendRequestNotification = new()
{
Type = NotificationEventType.NewFriendRequest,
};
_notifications.AddLast(newFriendRequestNotification);
_hasNewFriendRequest = true;
}
_notificationEvent.ReadableEvent.Signal();
}
}
}
protected override void Dispose(bool isDisposing)
{
if (isDisposing)
{
NotificationEventHandler.Instance.UnregisterNotificationService(this);
}
}
}
}
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