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


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


using static ClientToGameReq.Types;
using static ClientToGameRes.Types;


namespace GameServer.PacketHandler;

[PacketHandler(typeof(ClientToGameReq), typeof(ClientToGameReq.Types.MoveReq), typeof(MovePacketHandler), typeof(GameLoginListener))]
internal class MovePacketHandler : PacketRecvHandler
{
    // Res 패킷 없음

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

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

        var recv_msg = recvMessage as ClientToGame;
        ArgumentNullReferenceCheckHelper.throwIfNull(recv_msg, () => $"recv_msg is null !!! - {player.toBasicString()}");
        var request = recv_msg.Request.MoveReq;
        ArgumentNullReferenceCheckHelper.throwIfNull(request, () => $"request is null !!! - {player.toBasicString()}");

        var player_action = player.getEntityAction<PlayerAction>();
        NullReferenceCheckHelper.throwIfNull(player_action, () => $"player_action is null !!! - {player.toBasicString()}");

        var selected_character = player_action.getSelectedCharacter();
        if (null == selected_character)
        {
            err_msg = $"Not selected Character !!! - {player.toBasicString()}";
            result.setFail(ServerErrorCode.CharacterNotSelected, err_msg);
            Log.getLogger().error(result.toBasicString());

            return result;
        }

        var character_action = selected_character.getEntityAction<CharacterAction>();
        NullReferenceCheckHelper.throwIfNull(character_action, () => $"character_action is null !!! - {selected_character.toBasicString()}");
        if(character_action.isFarming())
        {
            err_msg = $"Character is Farming !!! - {selected_character.toBasicString()}, {player.toBasicString()}";
            result.setFail(ServerErrorCode.FarimgState, err_msg);
            Log.getLogger().error(result.toBasicString());

            return result;
        }

        var game_zone_action = player.getEntityAction<GameZoneAction>();
        NullReferenceCheckHelper.throwIfNull(game_zone_action, () => $"game_zone_action is null !!! - {player.toBasicString()}");

        result = game_zone_action.tryMove(request.Pos);
        if (result.isFail())
        {
            err_msg = $"Failed to tryMove at {this.getTypeName()} !!! : {result.toBasicString()} - {player.toBasicString()}";
            Log.getLogger().error(err_msg);

            return result;
        }

        return await Task.FromResult(result);
    }
}