using Amazon.S3.Model;
using Newtonsoft.Json;
using ServerCore; using ServerBase;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Numerics;
using System.Text;
using System.Threading.Tasks;

namespace ServerCommon
{
    public class RentalAttribute : EntityAttributeBase, ICopyEntityAttributeFromDoc, IMergeWithEntityAttribute
    {
        [JsonProperty]
        public int LandMetaId { get; set; }

        [JsonProperty]
        public int BuildingMetaId { get; set; }

        [JsonProperty]
        public int Floor { get; set; }

        [JsonProperty]
        public string MyhomeGuid { get; set; } = string.Empty;

        [JsonProperty]
        public DateTime RentalFinishTime { get; set; } = new();


        public RentalAttribute(EntityBase owner)
            : base(owner)
        {
        }

        public override void newEntityAttribute()
        {
            base.newEntityAttribute();
        }

        public override IEntityAttributeTransactor onNewEntityAttributeTransactor()
        {
            return new RentalAttributeTransactor(getOwner());
        }

        public override void onClear()
        {
            LandMetaId = 0;
            BuildingMetaId = 0;
            Floor = 0;
            MyhomeGuid = string.Empty;
            RentalFinishTime = new();

            getAttributeState().reset();
        }

        public override EntityAttributeBase onCloned()
        {
            var cloned = new RentalAttribute(getOwner());

            cloned.deepCopyFromBase(this);

            cloned.LandMetaId = LandMetaId;
            cloned.BuildingMetaId = BuildingMetaId;
            cloned.Floor = Floor;
            cloned.MyhomeGuid = MyhomeGuid;
            cloned.RentalFinishTime = RentalFinishTime;

            return cloned;
        }

        public override async Task<(Result, DynamoDbDocBase?)> toDocBase(bool isForQuery = true)
        {
            var result = new Result();

            var owner = getOwner();

            var user_attribute = owner.getRootParent().getEntityAttribute<UserAttribute>();
            NullReferenceCheckHelper.throwIfNull(user_attribute, () => $"user_attribute is null !!!");

            string user_guid = user_attribute.UserGuid;

            //=====================================================================================
            // Attribute => try pending Doc
            //=====================================================================================
            var try_pending_doc = getTryPendingDocBase() as RentalDoc;
            if (null == try_pending_doc)
            {
                var address = makeAddress(LandMetaId, BuildingMetaId, Floor);
                var ttl_seconds = DynamoDbClientHelper.makeTTLTimeForDynamoDB(RentalFinishTime);

                var to_copy_doc = new RentalDoc(user_guid, address, ttl_seconds);

                var origin_doc = getOriginDocBase<RentalAttribute>();
                if (null != origin_doc)
                {
                    to_copy_doc.copyTimestampsFromOriginDocBase(origin_doc);
                }

                try_pending_doc = to_copy_doc;

                setTryPendingDocBase(try_pending_doc);
            }

            var to_copy_doc_attrib = try_pending_doc.getAttrib<RentalAttrib>();
            NullReferenceCheckHelper.throwIfNull(to_copy_doc_attrib, () => $"to_copy_doc_attrib is null !!!");

            to_copy_doc_attrib.LandMetaId = LandMetaId;
            to_copy_doc_attrib.BuildingMetaId = BuildingMetaId;
            to_copy_doc_attrib.Floor = Floor;
            to_copy_doc_attrib.MyhomeGuid = MyhomeGuid;
            to_copy_doc_attrib.RentalFinishTime = RentalFinishTime;

            if (false == isForQuery)
            {
                return (result, try_pending_doc);
            }

            //=====================================================================================
            // Doc QueryType 반영
            //=====================================================================================
            (result, var to_query_doc) = await applyDoc4Query(try_pending_doc);
            if (result.isFail())
            {
                return (result, null);
            }

            return (result, to_query_doc);
        }

        public bool copyEntityAttributeFromDoc(DynamoDbDocBase docBase)
        {
            var err_msg = string.Empty;

            var to_cast_string = typeof(RentalDoc).Name;

            var rental_doc_base = docBase as RentalDoc;
            if (null == rental_doc_base)
            {
                err_msg = $"Failed to copyEntityAttributeFromDoc() !!!, rental_doc_base is null :{to_cast_string}";
                Log.getLogger().error(err_msg);
                return false;
            }

            //=====================================================================================
            // New Doc => Origin Doc
            //=====================================================================================
            syncOriginDocBaseWithNewDoc<RentalAttribute>(rental_doc_base);

            //=====================================================================================
            // Doc => Attribute
            //=====================================================================================
            var doc_attrib = rental_doc_base.getAttrib<RentalAttrib>();
            NullReferenceCheckHelper.throwIfNull(doc_attrib, () => $"doc_attrib is null !!!");

            LandMetaId = doc_attrib.LandMetaId;
            BuildingMetaId = doc_attrib.BuildingMetaId;
            Floor = doc_attrib.Floor;
            MyhomeGuid = doc_attrib.MyhomeGuid;
            RentalFinishTime = doc_attrib.RentalFinishTime;

            return true;
        }

        public Result onMerge(EntityAttributeBase otherEntityAttribute)
        {
            var owner = getOwner();
            NullReferenceCheckHelper.throwIfNull(owner, () => $"owner is null !!!");

            var result = new Result();
            var err_msg = string.Empty;

            if (null == otherEntityAttribute)
            {
                err_msg = $"Invalid Param !!!, otherEntityAttribute is null";
                result.setFail(ServerErrorCode.FunctionParamNull, err_msg);
                Log.getLogger().error(result.toBasicString());

                return result;
            }

            //=====================================================================================
            // OtherAttribute => Attribute
            //=====================================================================================
            var rental_attribute = otherEntityAttribute as RentalAttribute;
            if (null == rental_attribute)
            {
                err_msg = $"Failed to cast RentalAttribute !!!, rental_attribute is null";
                result.setFail(ServerErrorCode.ClassTypeCastIsNull, err_msg);
                Log.getLogger().error(result.toBasicString());

                return result;
            }

            LandMetaId = rental_attribute.LandMetaId;
            BuildingMetaId = rental_attribute.BuildingMetaId;
            Floor = rental_attribute.Floor;
            MyhomeGuid = rental_attribute.MyhomeGuid;
            RentalFinishTime = rental_attribute.RentalFinishTime;

            //=====================================================================================
            // Attribute Try Pending Doc => Origin Doc
            //=====================================================================================
            var try_pending_doc = rental_attribute.getTryPendingDocBase() as RentalDoc;
            if (null != try_pending_doc)
            {
                rental_attribute.resetTryPendingDocBase();

                syncOriginDocBaseWithNewDoc<RentalAttribute>(try_pending_doc);
            }

            var origin_doc_base = getOriginDocBase<RentalAttribute>();
            if (null == origin_doc_base)
            {
                // DB 에 저장되어 있지 않는 경우 OriginDoc은 null 이다 !!!
                return result;
            }

            var rental_attrib = origin_doc_base.getAttrib<RentalAttrib>();
            NullReferenceCheckHelper.throwIfNull(rental_attrib, () => $"rental_attrib is null !!! - {owner.toBasicString()}");

            rental_attrib.LandMetaId = LandMetaId;
            rental_attrib.BuildingMetaId = BuildingMetaId;
            rental_attrib.Floor = Floor;
            rental_attrib.MyhomeGuid = MyhomeGuid;
            rental_attrib.RentalFinishTime = RentalFinishTime;

            return result;
        }

        string makeAddress(int landMetaId, int buildingMetaId, int floor)
        {
            var address = string.Empty;

            if (landMetaId <= 0)
                return address;

            address = $"{landMetaId}";

            if (buildingMetaId <= 0)
                return address;

            address = $"{landMetaId}#{buildingMetaId}";

            if (floor <= 0)
                return address;
            
            address = $"{landMetaId}#{buildingMetaId}#{floor}";

            return address;
        }
    }

    public class RentalAttributeTransactor : EntityAttributeTransactorBase<RentalAttribute>, ICopyEntityAttributeTransactorFromEntityAttribute
    {
        public RentalAttributeTransactor(EntityBase owner)
            : base(owner)
        {
        }

        public bool copyEntityAttributeTransactorFromEntityAttribute(EntityAttributeBase? entityAttributeBase)
        {
            var err_msg = string.Empty;

            var to_cast_string = typeof(RentalAttribute).Name;

            var copy_from_rental_attribute = entityAttributeBase as RentalAttribute;
            if (null == copy_from_rental_attribute)
            {
                err_msg = $"Failed to copyEntityAttributeTransactorBaseFromEntityAttribute() !!!, copy_from_rental_attribute is null :{to_cast_string}";
                Log.getLogger().error(err_msg);
                return false;
            }

            var copy_to_rental_attribute = getClonedEntityAttribute() as RentalAttribute;
            if (null == copy_to_rental_attribute)
            {
                err_msg = $"Failed to copyEntityAttributeTransactorBaseFromEntityAttribute() !!!, copy_to_rental_attribute is null :{to_cast_string}";
                Log.getLogger().error(err_msg);
                return false;
            }

            copy_to_rental_attribute.LandMetaId = copy_from_rental_attribute.LandMetaId;
            copy_to_rental_attribute.BuildingMetaId = copy_from_rental_attribute.BuildingMetaId;
            copy_to_rental_attribute.Floor = copy_from_rental_attribute.Floor;
            copy_to_rental_attribute.MyhomeGuid = copy_from_rental_attribute.MyhomeGuid;
            copy_to_rental_attribute.RentalFinishTime = copy_from_rental_attribute.RentalFinishTime;

            return true;
        }
    }
}