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


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


using PARTY_GUID = System.String;


namespace GameServer.PacketHandler;

[PacketHandler(typeof(ClientToGameReq), typeof(ClientToGameReq.Types.InvitePartyListReq), typeof(InvitePartyListPacketHandler), typeof(GameLoginListener))]
public class InvitePartyListPacketHandler : PacketRecvHandler
{
    private static void send_S2C_ACK_INVITE_PARTY_LIST(Player owner, Result result, IReadOnlyList<InvitePartyState>? invites)
    {
        var ack_packet = new ClientToGame
        {
            Response = new ClientToGameRes
            {
                ErrorCode = result.ErrorCode,
                InvitePartyListRes = new()
            }
        };

        if (result.isSuccess() && null != invites)
        {
            ack_packet.Response.InvitePartyListRes.InvitePartyList.AddRange(invites);
        }

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

    public override async Task<Result> onProcessPacket(ISession entityWithSession, IMessage recvMessage)
    {
        var result = new Result();
        var entity_player = entityWithSession as Player;
        NullReferenceCheckHelper.throwIfNull(entity_player, () => "player is null !!!");
        
        // 1. 기본 정보 체크
        var request = (recvMessage as ClientToGame)?.Request.InvitePartyListReq;
        if (null == request)
        {
            var err_msg = $"Failed to get request type !!! : {nameof(ClientToGame.Request.InvitePartyListReq)}";
            result.setFail(ServerErrorCode.InvalidArgument, err_msg);
            Log.getLogger().error(result.toBasicString());
            send_S2C_ACK_INVITE_PARTY_LIST(entity_player, result, null);
            
            return result;
        }
        
        // 2. invite recv list 획득
        var invite_party_recv_action = entity_player.getEntityAction<PartyInvitePartyRecvAction>();
        var list = await invite_party_recv_action.getPartyInvitePartyRecvs();
        
        var global_party = GameServerApp.getServerLogic().findGlobalEntity<GlobalParty>();
        NullReferenceCheckHelper.throwIfNull(global_party, () => "global party is null !!!");

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

        var invites = new List<InvitePartyState>();
        foreach (var recv in list)
        {
            // 2-1. party 정보 확인
            var party_info = await global_party_action.getPartyLeaderGuidAndMemberCount(recv.Key);
            if (PARTY_GUID.IsNullOrEmpty(party_info.leader_guid))
            {
                // recv 제거
                await invite_party_recv_action.deleteInvitePartyRecv(recv.Key);
            };
            
            // 2-2. 데이터 채우기
            var invite_party_state = new InvitePartyState();
            invite_party_state.InvitePartyGuid = recv.Key;
            invite_party_state.InvitePartyLeaderNickname = party_info.leader_nickname;
            invite_party_state.InvitePartyLeaderGuid = party_info.leader_guid;
            invite_party_state.CurrentPartyMemberCount = party_info.member_count ?? 0;
            invite_party_state.EndTime = recv.Value.AddMilliseconds(ServerCommon.Constant.KEEP_INVITEPARTY_TIME).ToTimestamp();

            invites.Add(invite_party_state);
        }
        
        send_S2C_ACK_INVITE_PARTY_LIST(entity_player, result, invites);
        return result;
    }
}