using Google.Protobuf;
using Google.Protobuf.WellKnownTypes;


using ServerCore;
using ServerBase;
using ServerCommon;
using ServerCommon.BusinessLogDomain;
using MetaAssets;


namespace GameServer.PacketHandler;


[PacketHandler(typeof(ClientToGameReq), typeof(ClientToGameReq.Types.ExchangePartyMemberMarkReq), typeof(ExchangePartyMemberMarkPacketHandler), typeof(GameLoginListener))]
public class ExchangePartyMemberMarkPacketHandler : PacketRecvHandler
{
    private static void send_S2C_ACK_EXCHANGE_PARTY_MAKER(Player owner, Result result)
    {
        var ack_packet = new ClientToGame
        {
            Response = new ClientToGameRes
            {
                ErrorCode = result.ErrorCode,
                ExchangePartyMemberMarkRes = new()
            }
        };

        GameServerApp.getServerLogic().onSendPacket(owner, ack_packet);
    }

    public override async Task<Result> onProcessPacket(ISession entityWithSession, IMessage recvMessage)
    {
        var result = new Result();
        string err_msg;

        var entity_player = entityWithSession as Player;
        NullReferenceCheckHelper.throwIfNull(entity_player, () => $"entity_player is null !!!");

        // 1. 기본 정보 체크
        var request = (recvMessage as ClientToGame)?.Request.ExchangePartyMemberMarkReq;
        if (null == request)
        {
            err_msg = $"Failed to get request type !!! : {nameof(ClientToGame.Request.ExchangePartyMemberMarkReq)}";
            result.setFail(ServerErrorCode.InvalidArgument, err_msg);
            Log.getLogger().error(result.toBasicString());
            
            send_S2C_ACK_EXCHANGE_PARTY_MAKER(entity_player, result);
            return result;
        }
        
        // 2. 소속 파티 Guid 조회
        var personal_party_action = entity_player.getEntityAction<PersonalPartyAction>();
        NullReferenceCheckHelper.throwIfNull(personal_party_action, () => $"personal_party_action is null !!! - {entity_player.toBasicString()}");

        var personal_party = personal_party_action.getPersonalParty();
        if (null == personal_party)
        {
            err_msg = $"Failed to get party info !!! - not party member - {entity_player.getUserGuid()}";
            result.setFail(ServerErrorCode.NotParty, err_msg);
            Log.getLogger().error(err_msg);
            
            send_S2C_ACK_EXCHANGE_PARTY_MAKER(entity_player, result);
            return result;
        }
        
        var global_party = GameServerApp.getServerLogic().findGlobalEntity<GlobalParty>();
        NullReferenceCheckHelper.throwIfNull(global_party, () => $"global_party is null !!! - {entity_player.toBasicString()}");

        var party = global_party.getParty(personal_party.getPartyGuid());
        NullReferenceCheckHelper.throwIfNull(party, () => $"party is null !!! - {entity_player.toBasicString()}");

        // 3. 파티장 체크
        var party_action = party.getEntityAction<GlobalPartyDetailAction>();
        NullReferenceCheckHelper.throwIfNull(party_action, () => $"party_action is null !!! - {entity_player.toBasicString()}");

        var is_leader = party_action.isLeader(entity_player.getUserGuid());
        if (!is_leader)
        {
            err_msg = $"Failed to change party member maker !!! : not party leader - {entity_player.getUserGuid()}";
            result.setFail(ServerErrorCode.NotPartyLeader, err_msg);
            Log.getLogger().error(err_msg);

            send_S2C_ACK_EXCHANGE_PARTY_MAKER(entity_player, result);
            return result;
        }
        
        // 4. Maker 변경
        var party_member_action = party.getEntityAction<GlobalPartyDetailMemberAction>();
        NullReferenceCheckHelper.throwIfNull(party_member_action, () => $"party_member_action is null !!! - {entity_player.toBasicString()}");

        result = await party_member_action.changeMemberMaker(request.PartyMemberUserGuid, request.MarkId, true);
        if (result.isFail())
        {
            send_S2C_ACK_EXCHANGE_PARTY_MAKER(entity_player, result);
            return result;
        }
        
        // 5. 변경사항 알림 ( to server )
        var server_message = new ServerMessage()
        {
            ExchangePartyMemberMarkNoti = new()
            {
                PartyGuid = party.PartyGuid,
                MemberUserGuid = request.PartyMemberUserGuid,
                MarkId = request.MarkId
            }
        };
        PartyHelper.BroadcastToServers(party, server_message, true);
        
        // 6. 변경사항 알림 ( to client )
        var client_message = new ClientToGame()
        {
            Message = new()
            {
                ExchangePartyMemberMarkNoti = new()
                {
                    MarkId = request.MarkId,
                    MemberUserGuid = request.PartyMemberUserGuid
                }
            }
        };
        PartyHelper.BroadcastToClients(party, client_message, new List<string>());
        return result;
    }
}