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GameServer/Contents/Channel/PacketHandler/GetChannelListPacketHandler.cs

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+using Google.Protobuf;
+using Google.Protobuf.WellKnownTypes;
+
+using ServerCore;
+using ServerBase;
+using ServerCommon;
+
+using static ClientToGameReq.Types;
+using static ClientToGameRes.Types;
+
+
+namespace GameServer.PacketHandler;
+
+[PacketHandler(typeof(ClientToGameReq), typeof(ClientToGameReq.Types.GetChannelListReq), typeof(GetChannelListPacketHandler), typeof(GameLoginListener))]
+public class GetChannelListPacketHandler : PacketRecvHandler
+{
+    public static bool send_S2C_ACK_GET_CHANNEL_LIST(Player player, Result result, List<GameChannel>? channel_list)
+    {
+        var err_msg = string.Empty;
+
+        var ack_packet = new ClientToGame();
+        ack_packet.Response = new ClientToGameRes();
+
+        ack_packet.Response.ErrorCode = result.ErrorCode;
+        ack_packet.Response.GetChannelListRes = new GetChannelListRes();
+
+        if(channel_list != null)
+        {
+            var client_ui_channel_list = channel_list.Select(x => new ChannelInfo() { Channel = x.channel, Trafficlevel = x.trafficlevel }).ToList();
+            ack_packet.Response.GetChannelListRes.ChannelInfoList.AddRange(client_ui_channel_list);
+        }
+
+        if (false == GameServerApp.getServerLogic().onSendPacket(player, ack_packet))
+        {
+            return false;
+        }
+
+        return true;
+    }
+
+    public override Task<Result> onProcessPacket(ISession entityWithSession, IMessage recvMessage)
+    {
+        var result = new Result();
+        var err_msg = string.Empty;
+
+        var entity_player = entityWithSession as Player;
+        NullReferenceCheckHelper.throwIfNull(entity_player, () => "player is null !!!");
+        var server_logic = GameServerApp.getServerLogic();
+
+        var channel_action = entity_player.getEntityAction<ChannelAction>();
+        if (channel_action == null)
+        {
+            err_msg = $"Failed to get chat action : {nameof(ChannelAction)}";
+            result.setFail(ServerErrorCode.EntityActionNotFound, err_msg);
+            Log.getLogger().error(err_msg);
+
+            send_S2C_ACK_GET_CHANNEL_LIST(entity_player, result, null);
+            return Task.FromResult(result);
+        }
+
+        result = channel_action.tryGetChannelList();
+        if (result.isFail())
+        {
+            send_S2C_ACK_GET_CHANNEL_LIST(entity_player, result, null);
+            return Task.FromResult(result);
+        }
+
+        return Task.FromResult(result);
+    }
+
+    public override async Task onProcessPacketException(ISession entityWithSession, IMessage recvMessage
+                               , Result errorResult)
+    {
+        await Task.CompletedTask;
+
+        var player = entityWithSession as Player;
+        NullReferenceCheckHelper.throwIfNull(player, () => $"player is null !!! - {entityWithSession.toBasicString()}");
+
+        send_S2C_ACK_GET_CHANNEL_LIST(player, errorResult, null);
+    }
+}