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


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


using PARTY_GUID = System.String;
using USER_GUID = System.String;


namespace GameServer.PacketHandler;


[PacketHandler(typeof(ClientToGameReq), typeof(ClientToGameReq.Types.ReplyInvitePartyReq), typeof(ReplyInvitePartyPacketHandler), typeof(GameLoginListener))]
public class ReplyInvitePartyPacketHandler : PacketRecvHandler
{
    private static void send_S2C_ACK_REPLAY_INVITE_PARTY(Player owner, Result result)
    {
        var ack_packet = new ClientToGame
        {
            Response = new ClientToGameRes
            {
                ErrorCode = result.ErrorCode,
                ReplyInvitePartyRes = new()
            }
        };

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

    public override async Task<Result> onProcessPacket(ISession entityWithSession, IMessage recvMessage)
    {
        Log.getLogger().info($"{nameof(ReplyInvitePartyPacketHandler)}.{nameof(onProcessPacket)}: - {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.ReplyInvitePartyReq;
        if (null == request)
        {
            err_msg = $"Failed to get request type !!! : {nameof(ClientToGame.Request.ReplyInvitePartyReq)}";
            result.setFail(ServerErrorCode.InvalidArgument, err_msg);
            Log.getLogger().error(result.toBasicString());
                
            send_S2C_ACK_REPLAY_INVITE_PARTY(entity_player, result);
            return result;
        }
        
        // 2. 조건 체크
        result = await checkReplayInvitePartyAsync(entity_player, request.InvitePartyGuid);
        if (result.isFail()) return result;
        
        // 3. 파티 초대 응답 로직 체크
        result = await replyInvitePartyAsync(entity_player, request.InvitePartyGuid, request.Result);
        return result;
    }

    private async Task<Result> checkReplayInvitePartyAsync(Player entity_player, PARTY_GUID invite_party_guid)
    {
        var result = new Result();
        string err_msg;
        
        // 1. 초대 수신 시간 체크
        var invite_recv_time = await entity_player.getEntityAction<PartyInvitePartyRecvAction>()
            .getPartyInvitePartyRecvTime(invite_party_guid);
        if (null == invite_recv_time)
        {
            err_msg = $"Failed to find invite party recv !!! : {invite_party_guid}";
            result.setFail(ServerErrorCode.NotFoundPartyInvite, err_msg);
            Log.getLogger().error(err_msg);
            return result;
        }
        
        // 2. 파티 가입 여부 체크
        var login_cache_request = PartyHelper.getOwnUserLoginCacheRequest(entity_player);
        NullReferenceCheckHelper.throwIfNull(login_cache_request, () => $"login_cache_request is null !!! - party_guid : {invite_party_guid} - {entity_player.toBasicString()}");
        var loginCache = login_cache_request.getLoginCache();
        NullReferenceCheckHelper.throwIfNull(loginCache, () => $"loginCache is null !!! - party_guid : {invite_party_guid} -");
        if (string.IsNullOrEmpty(loginCache.PartyGuid)) return result;

        var global_party = GameServerApp.getServerLogic().findGlobalEntity<GlobalParty>();
        NullReferenceCheckHelper.throwIfNull(global_party, () => $"global_party is null !!! - party_guid : {invite_party_guid} - {entity_player.toBasicString()}");

        var party = global_party.getParty(loginCache.PartyGuid);
        NullReferenceCheckHelper.throwIfNull(party, () => $"party is null !!! - party_guid : {invite_party_guid} - {entity_player.toBasicString()}");

        // 3. 파티원 수가 여러명인지 체크
        var party_member_action = party.getEntityAction<GlobalPartyDetailMemberAction>();
        NullReferenceCheckHelper.throwIfNull(party_member_action, () => $"party_member_action is null !!! - party_guid : {invite_party_guid} - {entity_player.toBasicString()}");

        if (party_member_action.getMemberCount() > 1)
        {
            err_msg = $"Failed to reply invite party !!! : already party member - party_guid : {invite_party_guid} - {entity_player.getUserGuid()} ";
            result.setFail(ServerErrorCode.AlreadyPartyMember, err_msg);
            Log.getLogger().error(err_msg);
            
            return result;
        }
        
        return result;
    }

    private async Task<Result> replyInvitePartyAsync(Player entity_player, PARTY_GUID party_guid, BoolType reply_invite)
    {
        var result = new Result();
        string err_msg;
        
        // 1. 파티 정보 조회
        var global_party_action = GameServerApp.getServerLogic().findGlobalEntity<GlobalParty>()
            ?.getEntityAction<GlobalPartyAction>();
        NullReferenceCheckHelper.throwIfNull(global_party_action, () => $"global_party_action is null !!! - {entity_player.toBasicString()}");

        var party_info = await global_party_action.getPartyLeaderGuidAndMemberCount(party_guid);
        if (PARTY_GUID.IsNullOrEmpty(party_info.leader_guid))
        {
            err_msg = $"Failed to find party info !!! : {party_guid}";
            result.setFail(ServerErrorCode.NotFoundParty, err_msg);
            Log.getLogger().error(result.toBasicString()); 
            return result;
        }
        
        // 2. Invite 승인 로직 처리
        if (reply_invite == BoolType.True)
        {
            result = await acceptInvitePartyAsync(entity_player, party_guid);
            if (result.isFail())
            {
                send_S2C_ACK_REPLAY_INVITE_PARTY(entity_player, result);
                return result;
            }
        }

        // 3. leader 에게 통보
        result = await sendReplyInvitePartyResultAsync(entity_player, party_guid, party_info.leader_guid, reply_invite);
        
        send_S2C_ACK_REPLAY_INVITE_PARTY(entity_player, result);
        
        // 4. Business Log 기록
        writeBusinessLog(entity_player, party_guid, reply_invite);
        
        return result;
    }

    private async Task<Result> acceptInvitePartyAsync(Player entity_player, PARTY_GUID party_guid)
    {
        var result = new Result();

        var global_party = GameServerApp.getServerLogic().findGlobalEntity<GlobalParty>();
        NullReferenceCheckHelper.throwIfNull(global_party, () => $"global_party is null !!! - {entity_player.toBasicString()}");

        var global_party_action = global_party.getEntityAction<GlobalPartyAction>();
        NullReferenceCheckHelper.throwIfNull(global_party_action, () => $"global_party_action is null !!! - {entity_player.toBasicString()}");

        // 0. 기존 요청 정보 정리
        result = await clearMyInvitePartySendAsync(entity_player);
        if (result.isFail()) return result;
        
        // 1. user 정보 수정
        result = await setInvitePartyToUserAsync(entity_player, party_guid);
        if (result.isFail()) return result;
        
        // 2. party join 처리
        var party_member = PartyHelper.makePartyMember(entity_player.getUserGuid(), entity_player.getUserNickname());
        result = await global_party_action.joinParty(party_guid, party_member);
        if (result.isFail())
        {
            // 2-1. user 정보 롤백
            result = await setInvitePartyToUserAsync(entity_player, string.Empty);
        }
        
        return result;
    }

    private async Task<Result> clearMyInvitePartySendAsync(Player entity_player)
    {
        var result = new Result();
        
        // 1. 파티 정보 조회
        var personal_party_action = entity_player.getEntityAction<PersonalPartyAction>();
        var personal_party = personal_party_action.getPersonalParty();
        if (null == personal_party) 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());
        if (null == party) return result;

        // 2. 파티 인원수 체크
        var party_member_action = party.getEntityAction<GlobalPartyDetailMemberAction>();
        NullReferenceCheckHelper.throwIfNull(party_member_action, () => $"party_member_action is null !!! - {entity_player.toBasicString()}");
        if (party_member_action.getMemberCount() > 1)
        {
            var err_msg = $"Failed to reply invite party !!! : already party member - {party.PartyGuid}";
            result.setFail(ServerErrorCode.AlreadyPartyMember, err_msg);
            Log.getLogger().error(err_msg);
            return result;
        } 
        
        // 3. 파티 destroy
        var global_party_acton = global_party.getEntityAction<GlobalPartyAction>();
        NullReferenceCheckHelper.throwIfNull(global_party_acton, () => $"global_party_acton is null !!! - {entity_player.toBasicString()}");
        result = await global_party_acton.destroyParty(party.PartyGuid, false);
        if (result.isFail()) return result;
        
        // 4. user 정보 정리
        result = await personal_party_action.clearPersonalParty();
        
        return result;
    }

    private async Task<Result> setInvitePartyToUserAsync(Player entity_player, PARTY_GUID party_guid)
    {
        // 1. 파티 정보 설정
        var personal_party_action = entity_player.getEntityAction<PersonalPartyAction>();
        var result = await personal_party_action.setPersonalPartyGuid(party_guid);
        if (result.isFail()) return result;

        // 2. 파티 설정
        await personal_party_action.setPersonalParty(party_guid);
        
        return result;
    }

    private async Task<Result> sendReplyInvitePartyResultAsync(Player entity_player, PARTY_GUID party_guid, USER_GUID leader_guid, BoolType replay_invite)
    {
        var result = new Result();
        
        // 1. party leader 세션 체크
        var leader_login_cache = await PartyHelper.getOtherUserLoginCache(entity_player, leader_guid);
        if (null == leader_login_cache)
        {
            var err_msg = $"Failed to get party leader session !!! - {leader_guid}";
            result.setFail(ServerErrorCode.NotFoundParty, err_msg);
            Log.getLogger().error(err_msg);
            return result;
        }
        
        // 2. invite 응답 결과 전송
        var message_to_leader = new ServerMessage
        {
            ReplyInvitePartyNoti = new ServerMessage.Types.ReplyInvitePartyNoti()
            {
                InvitePartyGuid = party_guid,
                InviteUserGuid = entity_player.getUserGuid(),
                InviteUserNickname = entity_player.getUserNickname(),
                Result = replay_invite
            }
        };
        
        var rabbit_mq = GameServerApp.getServerLogic().getRabbitMqConnector() as RabbitMqConnector;
        NullReferenceCheckHelper.throwIfNull(rabbit_mq, () => $"rabbit_mq is null !!!");
        rabbit_mq.SendMessage(leader_login_cache.CurrentServer, message_to_leader);
        
        // 3. 파티 초대 Recv 메시지 삭제
        var party_recv_action = entity_player.getEntityAction<PartyInvitePartyRecvAction>();

        result = await party_recv_action.deleteInvitePartyRecv(party_guid);
        return result;
    }

    private void writeBusinessLog(Player player, string partyGuid, BoolType isInviteAccept)
    {
        PartyMemberBusinessLog party_member_business_log;
        
        // 1. 파티 초대 응답 기록
        var party_member_log =
            PartyBusinessLogHelper.toPartyMemberLogData(partyGuid, player.getUserGuid(), PartyMemberActionType.None);

        if (BoolType.True != isInviteAccept)
        {
            party_member_log.PartyMemberActionType = PartyMemberActionType.InviteReject;
            party_member_business_log = new PartyMemberBusinessLog(party_member_log);

            BusinessLogger.collectLog(player, party_member_business_log);

            return;
        }
        
        party_member_log.PartyMemberActionType = PartyMemberActionType.InviteAccept;
        party_member_business_log = new PartyMemberBusinessLog(party_member_log);
        BusinessLogger.collectLog(player, party_member_business_log);

        // 2. 파티 정보 기록
        var log_invokers = new List<ILogInvoker>(2);

        var party_log_data = PartyBusinessLogHelper.toPartyLogData(partyGuid, false);
        var party_business_log = new PartyBusinessLog(party_log_data);
        log_invokers.Add(party_business_log);
        
        // 3. 파티 가입 기록
        party_member_log.PartyMemberActionType = PartyMemberActionType.JoinParty;
        party_member_business_log = new PartyMemberBusinessLog(party_member_log);
        log_invokers.Add(party_member_business_log);

        BusinessLogger.collectLogs(new LogActionEx(LogActionType.JoinParty), player, log_invokers);
    }
}