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


using Newtonsoft.Json;
using ServerCore; using ServerBase;


using USER_GUID = System.String;


namespace ServerCommon
{
    public class UserContentsSettingAttribute : EntityAttributeBase, ICopyEntityAttributeFromDoc, IMergeWithEntityAttribute
    {
        [JsonProperty]
        public int MyhomeSlotOpenCount { get; set; } = 0;

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

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

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

        public override void onClear()
        {
            MyhomeSlotOpenCount = 0;
            BeaconAppProfileUploadTime = new();

            getAttributeState().reset();
        }

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

            cloned.deepCopyFromBase(this);

            cloned.MyhomeSlotOpenCount = MyhomeSlotOpenCount;
            cloned.BeaconAppProfileUploadTime = BeaconAppProfileUploadTime;

            return cloned;
        }

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

            var user_base = getOwner() as UserBase;
            NullReferenceCheckHelper.throwIfNull(user_base, () => $"user_base is null !!!");

            var user_attribute = user_base.getRootParent().getEntityAttribute<UserAttribute>();
            NullReferenceCheckHelper.throwIfNull(user_attribute, () => $"user_attribute is null !!! - {user_base.toBasicString()}");

            USER_GUID user_guid = user_attribute.UserGuid;

            //=====================================================================================
            // Attribute => try pending Doc
            //=====================================================================================
            var try_pending_doc = getTryPendingDocBase() as UserContentsSettingDoc;
            if (null == try_pending_doc)
            {
                var to_copy_doc = new UserContentsSettingDoc(user_guid);

                var origin_doc = getOriginDocBase<UserContentsSettingAttribute>();
                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<UserContentsSettingAttrib>();
            ArgumentNullException.ThrowIfNull(to_copy_doc_attrib);
            to_copy_doc_attrib.MyhomeSlotOpenCount = MyhomeSlotOpenCount;
            to_copy_doc_attrib.BeaconAppProfileUploadTime = BeaconAppProfileUploadTime;

            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(UserContentsSettingDoc).Name;

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

            //=====================================================================================
            // New Doc => Origin Doc
            //=====================================================================================
            syncOriginDocBaseWithNewDoc<UserContentsSettingAttribute>(user_contents_setting_doc_base);

            //=====================================================================================
            // Doc => Attribute
            //=====================================================================================
            var doc_attrib = user_contents_setting_doc_base.getAttrib<UserContentsSettingAttrib>();
            ArgumentNullException.ThrowIfNull(doc_attrib);

            MyhomeSlotOpenCount = doc_attrib.MyhomeSlotOpenCount;
            BeaconAppProfileUploadTime = doc_attrib.BeaconAppProfileUploadTime;

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

                return result;
            }

            MyhomeSlotOpenCount = user_contents_setting_attribute.MyhomeSlotOpenCount;
            BeaconAppProfileUploadTime = user_contents_setting_attribute.BeaconAppProfileUploadTime;

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

                syncOriginDocBaseWithNewDoc<UserContentsSettingAttribute>(try_pending_doc);
            }

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

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

            user_contents_setting_attribute.MyhomeSlotOpenCount = MyhomeSlotOpenCount;
            user_contents_setting_attribute.BeaconAppProfileUploadTime = BeaconAppProfileUploadTime;

            return result;
        }
    }

    public class UserContentsSettingAttributeTransactor : EntityAttributeTransactorBase<UserContentsSettingAttribute>, ICopyEntityAttributeTransactorFromEntityAttribute
    {
        public UserContentsSettingAttributeTransactor(EntityBase owner)
            : base(owner)
        {
        }

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

            var to_cast_string = typeof(UserContentsSettingAttribute).Name;

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

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

            copy_to_user_contents_setting_attribute.MyhomeSlotOpenCount = copy_from_user_contents_setting_attribute.MyhomeSlotOpenCount;
            copy_to_user_contents_setting_attribute.BeaconAppProfileUploadTime = copy_from_user_contents_setting_attribute.BeaconAppProfileUploadTime;

            return true;
        }
    }
}