using LiteNetLib;
using MMOserver.Game.Channel;
using MMOserver.Game.Party;
using MMOserver.Packet;
using ProtoBuf;
using Serilog;
using ServerLib.Packet;
using ServerLib.Service;

namespace MMOserver.Game.Service;

/*
 * 채팅 메시지 핸들러
 */
public partial class GameServer : ServerBase
{
    private void OnChat(NetPeer peer, int hashKey, byte[] payload)
    {
        ChatPacket req = Serializer.Deserialize<ChatPacket>(new ReadOnlyMemory<byte>(payload));

        ChannelManager cm = ChannelManager.Instance;
        int channelId = cm.HasUser(hashKey);
        if (channelId < 0)
        {
            return;
        }

        Player? sender = cm.GetChannel(channelId).GetPlayer(hashKey);
        if (sender == null)
        {
            return;
        }

        // 서버에서 발신자 정보 채워줌 (클라 위조 방지)
        ChatPacket res = new()
        {
            Type = req.Type,
            SenderId = sender.PlayerId,
            SenderNickname = sender.Nickname,
            TargetId = req.TargetId,
            Message = req.Message
        };

        byte[] data = PacketSerializer.Serialize((ushort)PacketCode.CHAT, res);

        switch (req.Type)
        {
            case ChatType.GLOBAL:
                // 채널 내 모든 유저 (자신 포함)
                BroadcastToChannel(channelId, data);
                Log.Debug("[Chat] GLOBAL HashKey={Key} Message={Msg}", hashKey, req.Message);
                break;

            case ChatType.PARTY:
                // 파티 멤버에게만 (자신 포함)
                PartyManager pm = cm.GetChannel(channelId).GetPartyManager();
                PartyInfo? party = pm.GetPartyByPlayer(hashKey);
                if (party == null)
                {
                    Log.Warning("[Chat] PARTY 파티 없음 HashKey={Key}", hashKey);
                    return;
                }

                BroadcastToUsers(party.PartyMemberIds, data);
                Log.Debug("[Chat] PARTY HashKey={Key} PartyId={PartyId} Message={Msg}", hashKey, party.PartyId, req.Message);
                break;

            case ChatType.WHISPER:
                // 대상 + 발신자에게만
                if (sessions.TryGetValue(req.TargetId, out NetPeer? targetPeer))
                {
                    SendTo(targetPeer, data);
                }
                else
                {
                    Log.Warning("[Chat] WHISPER 대상 없음 HashKey={Key} TargetId={TargetId}", hashKey, req.TargetId);
                }

                // 자신에게도 전송 (귓말 확인용)
                SendTo(peer, data);
                Log.Debug("[Chat] WHISPER HashKey={Key} TargetId={TargetId} Message={Msg}", hashKey, req.TargetId, req.Message);
                break;
        }
    }
}