using Newtonsoft.Json;
using ServerCore; using ServerBase;
using USER_GUID = System.String;
using META_ID = System.UInt32;

namespace ServerCommon
{
    public class PackageLastOrderRecodeAttribute : EntityAttributeBase, ICopyEntityAttributeFromDoc, IMergeWithEntityAttribute
    {
        [JsonProperty]
        public string LastOrderGuid { get; set; } = string.Empty;

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

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

        public override void onClear()
        {
            LastOrderGuid = string.Empty;
            LastBuyTime = new();
        }

        public override EntityAttributeBase onCloned()
        {
            var cloned = new PackageLastOrderRecodeAttribute(getOwner());
            cloned.LastOrderGuid = LastOrderGuid;
            cloned.LastBuyTime = LastBuyTime;
            return cloned;
        }

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

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

            var owner = getOwner();
            NullReferenceCheckHelper.throwIfNull(owner, () => "owner is null");

            var root_parent = owner.getRootParent();
            NullReferenceCheckHelper.throwIfNull(root_parent, () => "root_parent is null");

            var acoount_attribute = owner.getRootParent().getEntityAttribute<AccountAttribute>();
            NullReferenceCheckHelper.throwIfNull(acoount_attribute, () => "acoount_attribute is null");

            USER_GUID user_guid = acoount_attribute.UserGuid;

            //=====================================================================================
            // Attribute => try pending Doc
            //=====================================================================================
            var try_pending_doc = getTryPendingDocBase() as PackageLastOrderRecodeDoc;
            if (null == try_pending_doc)
            {
                var to_copy_doc = new PackageLastOrderRecodeDoc(user_guid);
                var origin_doc = getOriginDocBase<PackageLastOrderRecodeAttribute>();
                if (null != origin_doc)
                {
                    to_copy_doc.copyTimestampsFromOriginDocBase(origin_doc);
                }

                try_pending_doc = to_copy_doc;
                
                setTryPendingDocBase(try_pending_doc);
            }

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

            package_lastorder_recode_attrib.LastOrderGuid = LastOrderGuid;
            package_lastorder_recode_attrib.LastBuyTime = LastBuyTime;

            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, to_query_doc);
            }

            return (result, to_query_doc);
        }

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

            var to_cast_string = typeof(PackageLastOrderRecodeDoc).Name;

            var package_doc_base = docBase as PackageLastOrderRecodeDoc;
            if (null == package_doc_base)
            {
                err_msg = $"Failed to copyEntityAttributeFromDoc() !!!, package_doc_base is null :{to_cast_string}";
                Log.getLogger().error(err_msg);
                return false;
            }
            
            //=====================================================================================
            // New Doc => Origin Doc
            //=====================================================================================
            syncOriginDocBaseWithNewDoc<PackageLastOrderRecodeAttribute>(package_doc_base);

            //=====================================================================================
            // Doc => Doc, Attribute
            //=====================================================================================
            var package_attrib = package_doc_base.getAttrib<PackageLastOrderRecodeAttrib>();
            //NullReferenceCheckHelper.throwIfNull(package_attrib, () => $"building_attrib is null !!!");
            //var doc_attrib = package_doc_base.getAttrib<PackageLastOrderRecodeAttrib>();
            
            if (package_attrib == null)
            {
                err_msg = $"Failed to get package attrib : {nameof(PackageLastOrderRecodeAttrib)}";
                result.setFail(ServerErrorCode.EntityAttributeIsNull, err_msg);
                Log.getLogger().error(err_msg);
                return false;
            }

            LastOrderGuid = package_attrib.LastOrderGuid;
            LastBuyTime = package_attrib.LastBuyTime;

            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 package_lastorder_recode_attribute = otherEntityAttribute as PackageLastOrderRecodeAttribute;
            if (null == package_lastorder_recode_attribute)
            {
                err_msg = $"Failed to cast Attribute !!!, package_last_order_recode_attribute is null";
                result.setFail(ServerErrorCode.ClassTypeCastIsNull, err_msg);
                Log.getLogger().error(result.toBasicString());

                return result;
            }

            LastOrderGuid = package_lastorder_recode_attribute.LastOrderGuid;
            LastBuyTime = package_lastorder_recode_attribute.LastBuyTime;

            
            //=====================================================================================
            // Attribute Try Pending Doc => Origin Doc
            //=====================================================================================
            var try_pending_doc = package_lastorder_recode_attribute.getTryPendingDocBase() as PackageLastOrderRecodeDoc;
            if (null != try_pending_doc)
            {
                package_lastorder_recode_attribute.resetTryPendingDocBase();
                
                syncOriginDocBaseWithNewDoc<PackageLastOrderRecodeAttribute>(try_pending_doc);
            }

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

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

            package_lastorder_recode_attrib.LastOrderGuid = LastOrderGuid;
            package_lastorder_recode_attrib.LastBuyTime = LastBuyTime;

            return result;
        }
    }
    public class PackageLastOrderRecodeAttributeTransactor : EntityAttributeTransactorBase<PackageLastOrderRecodeAttribute>, ICopyEntityAttributeTransactorFromEntityAttribute
    {
        public PackageLastOrderRecodeAttributeTransactor(EntityBase owner)
            : base(owner)
        {
        }

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

            var to_cast_string = typeof(PackageLastOrderRecodeAttribute).Name;

            var copy_from_attribute = entityAttributeBase as PackageLastOrderRecodeAttribute;
            if (null == copy_from_attribute)
            {
                err_msg = $"Failed to copyEntityAttributeTransactorFromEntityAttribute() !!!, copy_from_package_last_order_recode_attribute is null :{to_cast_string}";
                Log.getLogger().error(err_msg);
                return false;
            }

            var copy_to_attribute = getClonedEntityAttribute() as PackageLastOrderRecodeAttribute;
            if (null == copy_to_attribute)
            {
                err_msg = $"Failed to copyEntityAttributeTransactorFromEntityAttribute() !!!, copy_to_package_last_order_recode_attribute is null :{to_cast_string}";
                Log.getLogger().error(err_msg);
                return false;
            }

            copy_to_attribute.LastOrderGuid = copy_from_attribute.LastOrderGuid;
            copy_to_attribute.LastBuyTime = copy_from_attribute.LastBuyTime;

            return true;
        }
    }
}