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.InvitePartySendListReq), typeof(InvitePartySendListPacketHandler), typeof(GameLoginListener))]
public class InvitePartySendListPacketHandler : PacketRecvHandler
{
    private static void send_S2C_ACK_INVITE_PARTY_SEND_LIST(Player owner, Result result, IReadOnlyList<InvitePartySendState>? invites)
    {
        var ack_packet = new ClientToGame
        {
            Response = new ClientToGameRes
            {
                ErrorCode = result.ErrorCode,
                InvitePartySendListRes = new()
            }
        };

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

        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, () => "player is null !!!");
        
        // 1. 기본 정보 체크
        var request = (recvMessage as ClientToGame)?.Request.InvitePartySendListReq;
        if (null == request)
        {
            err_msg = $"Failed to get request type !!! : {nameof(ClientToGame.Request.InvitePartySendListReq)}";
            result.setFail(ServerErrorCode.InvalidArgument, err_msg);
            Log.getLogger().error(result.toBasicString());
            send_S2C_ACK_INVITE_PARTY_SEND_LIST(entity_player, result, null);
            
            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_INVITE_PARTY_SEND_LIST(entity_player, result, null);
            return result;
        }

        var global_party = GameServerApp.getServerLogic().findGlobalEntity<GlobalParty>();
        NullReferenceCheckHelper.throwIfNull(global_party, () => "global party is null !!!");

        var party = global_party.getParty(personal_party.getPartyGuid());
        NullReferenceCheckHelper.throwIfNull(party, () => "global party detail is null !!!");

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

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

            send_S2C_ACK_INVITE_PARTY_SEND_LIST(entity_player, result, null);
            return result;
        }
        
        // 4. invite send list 획득
        var party_invite_send_action = party.getEntityAction<GlobalPartyInvitePartySendAction>();
        NullReferenceCheckHelper.throwIfNull(party_invite_send_action, () => $"GlobalPartyInvitePartySendAction is null !!! - {entity_player.toBasicString()} / {party.toBasicString()}");

        var sends = await party_invite_send_action.getPartyInvitePartySends();

        var invites = new List<InvitePartySendState>();
        foreach (var send in sends)
        {
            var nickname = await PartyHelper.getUserNicknameFromGuid(send.Key);
            
            var invite = new InvitePartySendState();
            invite.InviteUserNickname = nickname ?? string.Empty;
            invite.InviteUserGuid = send.Key;
            invite.EndTime = Timestamp.FromDateTime(send.Value);

            invites.Add(invite);
        }

        send_S2C_ACK_INVITE_PARTY_SEND_LIST(entity_player, result, invites);
        return result;
    }
}