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


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


using USER_GUID = System.String;


namespace GameServer.PacketHandler;

[PacketHandler(typeof(ClientToGameReq), typeof(ClientToGameReq.Types.ExchangePartyNameReq), typeof(ExchangePartyNamePacketHandler), typeof(GameLoginListener))]
public class ExchangePartyNamePacketHandler : PacketRecvHandler
{
    private static void send_S2C_ACK_EXCHANGE_PARTY_NAME(Player owner, Result result)
    {
        var ack_packet = new ClientToGame
        {
            Response = new ClientToGameRes
            {
                ErrorCode = result.ErrorCode,
                ExchangePartyNameRes = new()
            }
        };

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

    public override async 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, () => $"entity_player is null !!!");

        // 1. 기본 정보 체크
        var request = (recvMessage as ClientToGame)?.Request.ExchangePartyNameReq;
        if (null == request)
        {
            err_msg = $"Failed to get request type !!! : {nameof(ClientToGame.Request.ExchangePartyNameReq)}";
            result.setFail(ServerErrorCode.InvalidArgument, err_msg);
            Log.getLogger().error(result.toBasicString());
            
            send_S2C_ACK_EXCHANGE_PARTY_NAME(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_NAME(entity_player, result);
            return result;
        }
        
        // 3. 조건 체크
        result = checkPartyNameConditions(request.NewPartyName);
        if (result.isFail())
        {
            send_S2C_ACK_EXCHANGE_PARTY_NAME(entity_player, result);
            return result;
        }
        
        // 4. 파티 명칭 변경
        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()}");

        var party_info_action = party.getEntityAction<GlobalPartyDetailInfoAction>();
        NullReferenceCheckHelper.throwIfNull(party_info_action, () => $"party_info_action is null !!! - {entity_player.toBasicString()}");

        result = await party_info_action.changePartyName(request.NewPartyName, true);
        if (result.isFail())
        {
            send_S2C_ACK_EXCHANGE_PARTY_NAME(entity_player, result);
            return result;
        }
        
        // 5. 파티명 변경 알림 ( to server )
        var server_message = new ServerMessage
        {
            ExchangePartyNameNoti = new()
            {
                PartyGuid = request.NewPartyName
            }
        };
        PartyHelper.BroadcastToServers(party, server_message, true);
        
        // 6. 파티명 변경 알림 ( to client )
        var client_message = new ClientToGame()
        {
            Message = new ClientToGameMessage()
            {
                ExchangePartyNameNoti = new()
                {
                    NewPartyName = request.NewPartyName
                }
            }
        };
        PartyHelper.BroadcastToClients(party, client_message, new List<USER_GUID>());
        
        return result;
    }

    private Result checkPartyNameConditions(string partyName)
    {
        var result = new Result();
        string err_msg;
        
        // 1. 길이 체크
        if (partyName.Length > MetaHelper.GameConfigMeta.MaxPartyNameInput)
        {
            err_msg = $"fail to exchange party name !!! : invalid length - {partyName.Length}";
            result.setFail(ServerErrorCode.InvalidPartyStringLength, err_msg);
            Log.getLogger().error(err_msg);
            return result;
        }
        
        // 2. 금칙어 체크
        if (StringRuleHelper.isBanWord(partyName, false))
        {
            err_msg = $"fail to exchange party name !!! : include ban word - {partyName}";
            result.setFail(ServerErrorCode.IncludeBanWordFromPartyName, err_msg);
            Log.getLogger().error(err_msg);
            return result;
        }

        return result;
    }
}