using Google.Protobuf.WellKnownTypes;
using Newtonsoft.Json;
using ServerCore; using ServerBase;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ServerCommon
{
    public class BuildingRentalHistoryAttribute : EntityAttributeBase, ICopyEntityAttributeFromDoc, IMergeWithEntityAttribute
    {
        [JsonProperty]
        public int BuildingMetaId { get; set; }
        [JsonProperty]
        public int Floor { get; set; } = 0;
        [JsonProperty]
        public string RenteeUserGuid { get; set; } = string.Empty;
        [JsonProperty]
        public DateTime RentalTime { get; set; } = new();
        [JsonProperty]
        public int RentalPeriod { get; set; } = 0;
        

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

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

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

        public override void onClear()
        {
            BuildingMetaId = 0;
            Floor = 0;
            RenteeUserGuid = string.Empty;
            RentalTime = new();
            RentalPeriod = 0;

            getAttributeState().reset();
        }

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

            cloned.deepCopyFromBase(this);

            cloned.BuildingMetaId = BuildingMetaId;
            cloned.Floor = Floor;
            cloned.RenteeUserGuid = RenteeUserGuid;
            cloned.RentalTime = RentalTime;
            cloned.RentalPeriod = RentalPeriod;

            return cloned;
        }

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

            //=====================================================================================
            // Attribute => try pending Doc
            //=====================================================================================
            var try_pending_doc = getTryPendingDocBase() as BuildingRentalHistoryDoc;
            if (null == try_pending_doc)
            {
                var to_copy_doc = new BuildingRentalHistoryDoc(BuildingMetaId, RentalTime.ToTimestamp());

                var origin_doc = getOriginDocBase<BuildingRentalHistoryAttribute>();
                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<BuildingRentalHistoryAttrib>();
            NullReferenceCheckHelper.throwIfNull(to_copy_doc_attrib, () => $"to_copy_doc_attrib is null !!!");

            to_copy_doc_attrib.BuildingMetaId = BuildingMetaId;
            to_copy_doc_attrib.Floor = Floor;
            to_copy_doc_attrib.RenteeUserGuid = RenteeUserGuid;
            to_copy_doc_attrib.RentalTime = RentalTime;
            to_copy_doc_attrib.RentalPeriod = RentalPeriod;

            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(BuildingRentalHistoryDoc).Name;

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

            //=====================================================================================
            // New Doc => Origin Doc
            //=====================================================================================
            syncOriginDocBaseWithNewDoc<BuildingRentalHistoryAttribute>(building_rental_history_doc_base);

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

            BuildingMetaId = doc_attrib.BuildingMetaId;
            Floor = doc_attrib.Floor;
            RenteeUserGuid = doc_attrib.RenteeUserGuid;
            RentalTime = doc_attrib.RentalTime;
            RentalPeriod = doc_attrib.RentalPeriod;

            return true;
        }

        public Result onMerge(EntityAttributeBase otherEntityAttribute)
        {
            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 building_rental_history_attribute = otherEntityAttribute as BuildingRentalHistoryAttribute;
            if (null == building_rental_history_attribute)
            {
                err_msg = $"Failed to cast BuildingRentalHistoryAttribute !!!, building_rental_attribute is null";
                result.setFail(ServerErrorCode.ClassTypeCastIsNull, err_msg);
                Log.getLogger().error(result.toBasicString());

                return result;
            }

            BuildingMetaId = building_rental_history_attribute.BuildingMetaId;
            Floor = building_rental_history_attribute.Floor;
            RenteeUserGuid = building_rental_history_attribute.RenteeUserGuid;
            RentalTime = building_rental_history_attribute.RentalTime;
            RentalPeriod = building_rental_history_attribute.RentalPeriod;

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

                syncOriginDocBaseWithNewDoc<BuildingRentalHistoryAttribute>(try_pending_doc);
            }

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

            var building_rental_history_attrib = origin_doc_base.getAttrib<BuildingRentalHistoryAttrib>();
            NullReferenceCheckHelper.throwIfNull(building_rental_history_attrib, () => $"building_rental_attrib is null !!!");

            building_rental_history_attrib.BuildingMetaId = BuildingMetaId;
            building_rental_history_attrib.Floor = Floor;
            building_rental_history_attrib.RenteeUserGuid = RenteeUserGuid;
            building_rental_history_attrib.RentalTime = RentalTime;
            building_rental_history_attrib.RentalPeriod = RentalPeriod;

            return result;
        }
    }

    public class BuildingRentalHistoryAttributeTransactor : EntityAttributeTransactorBase<BuildingRentalHistoryAttribute>, ICopyEntityAttributeTransactorFromEntityAttribute
    {
        public BuildingRentalHistoryAttributeTransactor(EntityBase owner)
            : base(owner)
        {
        }

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

            var to_cast_string = typeof(BuildingRentalHistoryAttribute).Name;

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

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

            copy_to_building_rental_history_attribute.BuildingMetaId = copy_from_building_rental_history_attribute.BuildingMetaId;
            copy_to_building_rental_history_attribute.Floor = copy_from_building_rental_history_attribute.Floor;
            copy_to_building_rental_history_attribute.RenteeUserGuid = copy_from_building_rental_history_attribute.RenteeUserGuid;
            copy_to_building_rental_history_attribute.RentalTime = copy_from_building_rental_history_attribute.RentalTime;
            copy_to_building_rental_history_attribute.RentalPeriod = copy_from_building_rental_history_attribute.RentalPeriod;

            return true;
        }
    }
}