using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;


using ServerCore; using ServerBase;
using ServerCommon;
using MetaAssets;


using META_ID = System.UInt32;


namespace GameServer
{
    internal static class BuildingHelper
    {
        public static async Task<BuildingInfo> toBuildingInfo(this Building building)
        {
            var result = new Result();

            var building_attribute = building.getEntityAttribute<BuildingAttribute>();
            NullReferenceCheckHelper.throwIfNull(building_attribute, () => $"building_attribute is null !!!");

            var building_info = new BuildingInfo();

            building_info.BuildingMetaId = (int)building_attribute.BuildingMetaId;
            building_info.BuildingName = building_attribute.BuildingName;
            building_info.BuildingDescription = building_attribute.Description;
            building_info.OwnerUserGuid = building_attribute.OwnerUserGuid;
            building_info.RentalCurrencyType = building_attribute.RentalCurrencyType;
            building_info.RentalCurrencyAmount = building_attribute.RentalCurrencyAmount;
            building_info.IsRentalOpen = building_attribute.IsRentalOpen == true ? BoolType.True : BoolType.False;

            if (building_attribute.OwnerUserGuid != string.Empty)
            {
                (result, var nickname_attrib) = await NicknameDoc.findNicknameFromGuid(building_attribute.OwnerUserGuid);
                if (result.isSuccess() && nickname_attrib != null)
                {
                    building_info.OwnerUserNickname = nickname_attrib.Nickname;
                }
            }

            result = MapManager.Instance.tryGetUsingFloorCountByBuildingMetaId((int)building_attribute.BuildingMetaId, out var usingFloorCount);
            if (result.isSuccess())
            {
                building_info.RentalFloorCount = usingFloorCount;
            }

            return building_info;
        }

        public static async Task<(Result, Building?, OwnedBuilding?, DynamoDbDocBase?)> tryGainBuilding(Player player, int buildingMetaId)
        {
            var result = new Result();
            var err_msg = string.Empty;

            var server_logic = GameServerApp.getServerLogic();

            (result, var land_meta_data, var rental_fee_meta_data) = validCheckBuilding((META_ID)buildingMetaId);
            if (result.isFail())
            {
                err_msg = $"Failed to validCheckOwnerLand() !!! : {result.toBasicString()} - {player.toBasicString()}";
                Log.getLogger().error(err_msg);
                return (result, null, null, null);
            }
            NullReferenceCheckHelper.throwIfNull(land_meta_data, () => $"land_meta_data is null !!!");
            NullReferenceCheckHelper.throwIfNull(rental_fee_meta_data, () => $"rental_fee_meta_data is null !!!");


            var building_manager = server_logic.getBuildingManager();
            if (!building_manager.tryGetBuilding(buildingMetaId, out var building))
            {
                err_msg = $"Failed to tryGetBuilding() !!! : BuildingMetaId:{buildingMetaId} - {player.toBasicString()}";
                result.setFail(ServerErrorCode.BuildingNotFound, err_msg);
                Log.getLogger().error(result.toBasicString());

                return (result, null, null, null);
            }

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

            var user_guid = player.getUserGuid();
            building_action.setBuildingOwner( buildingMetaId, user_guid
                                            , (CurrencyType)rental_fee_meta_data.CurrencyType
                                            , rental_fee_meta_data.CurrencyValue, land_meta_data.RentalAvailable );

            var building_attribute = building.getEntityAttribute<BuildingAttribute>();
            NullReferenceCheckHelper.throwIfNull(building_attribute, () => $"land_building_attributettribute is null !!! - {player.toBasicString()}");

            (result, var building_doc_base) = await building_attribute.toDocBase();
            if (result.isFail())
            {
                err_msg = $"Failed to toDocBase() !!! : {result.toBasicString()}";
                Log.getLogger().error(err_msg);

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

            (result, var owned_building) = await OwnedBuildingHelper.createOwnedBuilding(player, buildingMetaId, OwnedType.Own);
            if (result.isFail())
            {
                err_msg = $"Failed to createOwnedBuilding() !!! : {result.toBasicString()}";
                Log.getLogger().error(err_msg);

                return (result, null, null, null);
            }

            return (result, building, owned_building, building_doc_base);
        }

        public static (Result, LandMetaData?, RentalfeeData?) validCheckBuilding(META_ID buildingMetaId)
        {
            var result = new Result();
            var err_msg = string.Empty;

            if (!MapManager.Instance.GetBuildingMapTree((Int32)buildingMetaId, out var building_map_tree))
            {
                err_msg = $"Failed to GetBuildingMapTree() !!! : BuildingMetaId:{buildingMetaId}";
                result.setFail(ServerErrorCode.BuildingMapTreeDataNotFound, err_msg);
                Log.getLogger().error(result.toBasicString());
                return (result, null, null);
            }

            var land_map_tree = building_map_tree.ParentLandMapTree;
            if (land_map_tree == null)
            {
                err_msg = $"Not Exist BuildingMapTree ParentLand !!! : BuildingMap:{building_map_tree.BuildingMapFileName}";
                result.setFail(ServerErrorCode.BuildingMapTreeParentLandNotFound, err_msg);
                Log.getLogger().error(result.toBasicString());
                return (result, null, null);
            }

            if (!MetaData.Instance._LandTable.TryGetValue(land_map_tree.LandId, out var land_meta_data))
            {
                err_msg = $"Failed to MetaData.TryGetValue() !!! : LandMetaId:{land_map_tree.LandId}";
                result.setFail(ServerErrorCode.LandMetaDataNotFound, err_msg);
                Log.getLogger().error(result.toBasicString());
                return (result, null, null);
            }

            if (!MetaData.Instance._RentalfeeTable.TryGetValue((land_meta_data.Editor, land_meta_data.LandSize), out var rentalfee_meta_data))
            {
                err_msg = $"Failed to MetaData.TryGetValue() !!! : Editor:{land_meta_data.Editor}, Size:{land_meta_data.LandSize}";
                result.setFail(ServerErrorCode.RentalfeeMetaDataNotFound, err_msg);
                Log.getLogger().error(result.toBasicString());
                return (result, null, null);
            }

            return (result, land_meta_data, rentalfee_meta_data);
        }

        public static async Task<(Result, Building?, OwnedBuilding?, DynamoDbDocBase?)> tryInitMyBuildingOwnership(Player player, int buildingMetaId)
        {
            var result = new Result();
            var err_msg = string.Empty;

            var server_logic = GameServerApp.getServerLogic();

            if (!MapManager.Instance.GetBuildingMapTree(buildingMetaId, out var building_map_tree))
            {
                err_msg = $"Failed to GetBuildingMapTree() !!! : BuildingMetaId:{buildingMetaId} - {player.toBasicString()}";
                result.setFail(ServerErrorCode.BuildingMapTreeDataNotFound, err_msg);
                Log.getLogger().error(result.toBasicString());

                return (result, null, null, null);
            }

            var land_map_tree = building_map_tree.ParentLandMapTree;
            if (land_map_tree == null)
            {
                err_msg = $"Not Exist BuildingMapTree ParentLand !!! : BuildingMap:{building_map_tree.BuildingMapFileName} - {player.toBasicString()}";
                result.setFail(ServerErrorCode.BuildingMapTreeParentLandNotFound, err_msg);
                Log.getLogger().error(result.toBasicString());

                return (result, null, null, null);
            }

            if (!MetaData.Instance._LandTable.TryGetValue(land_map_tree.LandId, out var land_meta_data))
            {
                err_msg = $"Failed to MetaData.TryGetValue() !!! : LandMetaId:{land_map_tree.LandId} - {player.toBasicString()}";
                result.setFail(ServerErrorCode.LandMetaDataNotFound, err_msg);
                Log.getLogger().error(result.toBasicString());

                return (result, null, null, null);
            }

            var building_manager = server_logic.getBuildingManager();
            if (!building_manager.tryGetBuilding(buildingMetaId, out var building))
            {
                err_msg = $"Failed to tryGetBuilding() !!! : BuildingMetaId:{buildingMetaId} - {player.toBasicString()}";
                result.setFail(ServerErrorCode.BuildingNotFound, err_msg);
                Log.getLogger().error(result.toBasicString());

                return (result, null, null, null);
            }

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

            var user_guid = player.getUserGuid();
            if (!building_action.isBuildingOwner(user_guid))
            {
                err_msg = $"Building Owner is Not Match !!! : buildingMetaId:{buildingMetaId} - {player.toBasicString()}";
                result.setFail(ServerErrorCode.BuildingOwnerIsNotMatch, err_msg);
                Log.getLogger().error(result.toBasicString());

                return (result, null, null, null);
            }

            building_action.initOwner();

            var building_attribute = building.getEntityAttribute<BuildingAttribute>();
            NullReferenceCheckHelper.throwIfNull(building_attribute, () => $"building_attribute is null !!! - {player.toBasicString()}");

            (result, var building_doc_base) = await building_attribute.toDocBase();
            if (result.isFail())
            {
                err_msg = $"Failed to toDocBase() !!! : {result.toBasicString()}";
                Log.getLogger().error(err_msg);

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

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

            if (!owned_building_agent_action.tryGetOwnedBuilding(buildingMetaId, out var owned_building))
            {
                err_msg = $"Failed to tryGetOwnedBuilding() !!! : buildingMetaId:{buildingMetaId} - {player.toBasicString()}";
                result.setFail(ServerErrorCode.OwnedBuildingNotFound, err_msg);
                Log.getLogger().error(result.toBasicString());

                return (result, null, null, null);
            }

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

            owned_building_action.DeleteOwnedBuilding();

            return (result, building, owned_building, building_doc_base);
        }
    }
}