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


using ServerCore;
using ServerBase;
using ServerCommon;


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


using SESSION_ID = System.Int32;
using WORLD_META_ID = System.UInt32;
using META_ID = System.UInt32;
using ENTITY_GUID = System.String;
using ACCOUNT_ID = System.String;
using OWNER_GUID = System.String;
using USER_GUID = System.String;
using CHARACTER_GUID = System.String;
using ITEM_GUID = System.String;
using NPC_UNIQUE_ID = System.String;
using UGC_NPC_META_GUID = System.String;
using ANCHOR_META_GUID = System.String;
using ENTITY_INSTANCE_GUID = System.String;



namespace GameServer.PacketHandler;

[PacketHandler(typeof(ClientToGameReq), typeof(C2GS_REQ_FARMING_START), typeof(FarmingStartPacketHandler), typeof(GameLoginListener))]
public class FarmingStartPacketHandler : PacketRecvHandler
{
    public static bool send_GS2C_ACK_FARMING_START( Player owner, ANCHOR_META_GUID anchorMetaGuid
                                                  , Result result
                                                  , FarmingSummary? farmingSummary = null)
    {
        var ack_packet = new ClientToGame();
        ack_packet.Response = new ClientToGameRes();

        ack_packet.Response.ErrorCode = result.ErrorCode;

        var ack_msg = new GS2C_ACK_FARMING_START();
        ack_packet.Response.AckFarmingStart = ack_msg;
        ack_msg.FarmingAnchorMetaId = anchorMetaGuid;

        if (result.isSuccess())
        {
            ack_msg.FarmingSummary = farmingSummary;

            var found_transaction_runner = owner.findTransactionRunner(TransactionIdType.PrivateContents);
            if (null == found_transaction_runner)
            {
                var err_msg = $"Not found TransactionRunner !!! : {owner.toBasicString()}";
                Log.getLogger().error(err_msg);
            }
            else
            {
                ack_msg.CommonResult = found_transaction_runner.getCommonResult();
            }
        }

        if (false == GameServerApp.getServerLogic().onSendPacket(owner, ack_packet))
        {
            return false;
        }

        return true;
    }

    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;
        NullReferenceCheckHelper.throwIfNull(recv_msg, () => $"recv_msg is null !!! - {player.toBasicString()}");

        var request = recv_msg.Request.ReqFarmingStart;

        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());

            send_GS2C_ACK_FARMING_START(player, request.FarmingAnchorMetaId, result);
            return result;
        }

        var server_logic = GameServerApp.getServerLogic();

        FarmingEffect? farming_effect = null;
        var fn_farming_start = async delegate ()
        {
            var result = new Result();

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

            var curr_map = game_zone_action.getLinkedToMap();
            if (null == curr_map)
            {
                err_msg = $"Not joined GameZone !!! - {player.toBasicString()}";
                result.setFail(ServerErrorCode.GameZoneNotJoin, err_msg);
                Log.getLogger().error(result.toBasicString());

                send_GS2C_ACK_FARMING_START(player, request.FarmingAnchorMetaId, result);
                return result;
            }

            var found_anchor_info = curr_map.findAnchorInfo(request.FarmingAnchorMetaId);
            if(null == found_anchor_info)
            {
                err_msg = $"Not found AnchorInfo !!! - {player.toBasicString()}";
                result.setFail(ServerErrorCode.FarmingAnchorNotFound, err_msg);
                Log.getLogger().error(result.toBasicString());

                send_GS2C_ACK_FARMING_START(player, request.FarmingAnchorMetaId, result);
                return result;
            }

            using (found_anchor_info.getAsyncLock().Lock())
            {
                (result, var farming_action) = await player_action.selectFarmingAction(request.ToUseEntityType, request.ToUseEnityGuid);
                NullReferenceCheckHelper.throwIfNull(farming_action, () => $"farming_action is null !!! - {player.toBasicString()}");

                (result, farming_effect) = await farming_action.tryStartFarming( request.FarmingAnchorMetaId, (Int16)request.FarmingActionTryCount );
                if (result.isFail())
                {
                    err_msg = $"Failed to tryStartFarming() !!! : {result.toBasicString()} - {player.toBasicString()}";
                    Log.getLogger().error(err_msg);

                    send_GS2C_ACK_FARMING_START(player, request.FarmingAnchorMetaId, result);
                    return result;
                }
                NullReferenceCheckHelper.throwIfNull(farming_effect, () => $"farming_effect is null !!! - {player.toBasicString()}");

                var batch = new QueryBatchEx<QueryRunnerWithDocument>( player, LogActionType.FarmingStart
                                                                     , server_logic.getDynamoDbClient()
                                                                     , true );
                {
                    var with_transaction_runner = new DBQWriteToAttributeAllWithTransactionRunner();
                    batch.addQuery(with_transaction_runner);
                    batch.addQuery(new QueryFinal(), async (_query) =>
                    {
                        await farming_action.completedFarmingStart( _query
                                                                  , player
                                                                  , farming_effect, with_transaction_runner );

                        return QueryBatchBase.QueryResultType.Success;
                    });
                }

                result = await QueryHelper.sendQueryAndBusinessLog(batch);
                if (result.isFail())
                {
                    send_GS2C_ACK_FARMING_START(player, request.FarmingAnchorMetaId, result);
                    return result;
                }

                send_GS2C_ACK_FARMING_START( player, request.FarmingAnchorMetaId
                                           , result
                                           , farming_effect.toFarmingSummary() );

                FarmingNotifyHelper.send_GS2C_NTF_FARMING_START(player, farming_effect);
            }

            return result;
        };

        result = await player.runTransactionRunnerSafely(TransactionIdType.PrivateContents, "FarmingStart", fn_farming_start);
        if (result.isFail())
        {
            err_msg = $"Failed to runTransactionRunnerSafely() !!! : {result.toBasicString()} - {player.toBasicString()}";
            Log.getLogger().error(err_msg);
            return result;
        }

        await farmingStartQuestCheck(player, request.ToUseEntityType, request.FarmingAnchorMetaId, farming_effect);
        return result;
    }

    private async Task farmingStartQuestCheck(Player player, FarmingSummonedEntityType entityType, string farmingAnchorMetaId, FarmingEffect? farmingEffect)
    {
        if (farmingEffect is null) return;
        string typeName = QuestMetaHelper.convertFarmingSummonedEntityTypeToQuestEntityType(entityType);
        var found_anchor_info = farmingEffect.getCurrMap().findAnchorInfo(farmingAnchorMetaId);
        if (found_anchor_info is null) return;
        await QuestManager.It.QuestCheck(player, new QuestFarming(EQuestEventTargetType.FARMING, EQuestEventNameType.STARTED, found_anchor_info.AnchorProp.TableId.ToString(), typeName));
    }
}