78 lines
2.5 KiB
C#
78 lines
2.5 KiB
C#
// <copyright file="ChatRoomManager.cs" company="MUnique">
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// Licensed under the MIT License. See LICENSE file in the project root for full license information.
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// </copyright>
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namespace MUnique.OpenMU.ChatServer;
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using System.Collections.Concurrent;
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using Microsoft.Extensions.Logging;
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/// <summary>
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/// The Chat Room Manager manages the creation and destruction of chat rooms.
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/// </summary>
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internal class ChatRoomManager
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{
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private readonly ILoggerFactory _loggerFactory;
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/// <summary>
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/// All currently used chat rooms.
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/// </summary>
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private readonly IDictionary<ushort, ChatRoom> _rooms = new ConcurrentDictionary<ushort, ChatRoom>();
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private readonly ConcurrentBag<ushort> _freeRoomIds = new();
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/// <summary>
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/// Initializes a new instance of the <see cref="ChatRoomManager" /> class.
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/// </summary>
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/// <param name="loggerFactory">The logger factory.</param>
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public ChatRoomManager(ILoggerFactory loggerFactory)
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{
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this._loggerFactory = loggerFactory;
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for (ushort i = 0; i < ushort.MaxValue; ++i)
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{
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this._freeRoomIds.Add(i);
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}
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}
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/// <summary>
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/// Gets the opened rooms.
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/// </summary>
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public ICollection<ChatRoom> OpenedRooms => this._rooms.Values;
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/// <summary>
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/// Creates a new ChatRoom and returns its Room-ID.
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/// </summary>
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/// <returns>The Room-ID of the new room. Returns ushort.MaxValue, if there is no free chat room available.</returns>
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public ushort CreateChatRoom()
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{
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if (!this._freeRoomIds.TryTake(out ushort roomId))
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{
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throw new InvalidOperationException("There is no free room id, so the chat room couldn't be created.");
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}
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var room = new ChatRoom(roomId, this._loggerFactory.CreateLogger<ChatRoom>());
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room.RoomClosed += this.OnChatRoomClosed;
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this._rooms.Add(roomId, room);
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return roomId;
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}
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/// <summary>
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/// Returns the chat room with the corresponding Room-ID.
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/// Returns null, if ChatRoom wasn't found.
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/// </summary>
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/// <param name="roomId">Room-ID.</param>
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/// <returns>ChatRoom or null.</returns>
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internal ChatRoom? GetChatRoom(ushort roomId)
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{
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this._rooms.TryGetValue(roomId, out var room);
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return room;
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}
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private void OnChatRoomClosed(object? sender, ChatRoomClosedEventArgs eventArgs)
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{
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var room = eventArgs.ChatRoom;
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this._rooms.Remove(room.RoomId);
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this._freeRoomIds.Add(room.RoomId);
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room.Dispose();
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}
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} |