using System;
using System.Threading.Tasks;


using Newtonsoft.Json;


using ServerCore; using ServerBase;


using META_ID = System.UInt32;
using USER_GUID = System.String;


namespace ServerCommon
{
    public class CraftRecipeAttribute : EntityAttributeBase, ICopyEntityAttributeFromDoc, IMergeWithEntityAttribute
    {
        [JsonProperty]
        public META_ID CraftMetaId { get; set; } = 0;

        public CraftRecipeAttribute(EntityBase owner, EntityBase entityOfOwnerEntityType) 
            : base(owner, entityOfOwnerEntityType)
        {
        }

        public override void onClear()
        {
            CraftMetaId = 0;
        }

        public override EntityAttributeBase onCloned()
        {
            var entity_of_owner_entity_type = getEntityOfOwnerEntityType();
            NullReferenceCheckHelper.throwIfNull(entity_of_owner_entity_type, () => $"entity_of_owner_entity_type is null !!!");

            var cloned = new CraftRecipeAttribute(getOwner(), entity_of_owner_entity_type);
            cloned.CraftMetaId = CraftMetaId;
            return cloned;
        }

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

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

            var acoount_attribute = getOwner().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 CraftRecipeDoc;
            if (null == try_pending_doc)
            {
                var to_copy_doc = new CraftRecipeDoc(user_guid, CraftMetaId);

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

            to_copy_doc_attrib.CraftMetaId = CraftMetaId;

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

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

            return (result, to_query_docs);
        }

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

            var to_cast_string = typeof(CraftRecipeDoc).Name;

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

            //=====================================================================================
            // New Doc => Origin Doc
            //=====================================================================================
            syncOriginDocBaseWithNewDoc<CraftRecipeAttribute>(recipe_doc_base);

            //=====================================================================================
            // Doc => Attribute
            //=====================================================================================
            var doc_attrib = recipe_doc_base.getAttrib<CraftRecipeAttrib>();
            if (doc_attrib == null)
            {
                err_msg = $"Failed to get craft recipe attrib : {nameof(CraftRecipeAttrib)}";
                result.setFail(ServerErrorCode.EntityAttributeIsNull, err_msg);
                Log.getLogger().error(err_msg);
                return false;
            }

            CraftMetaId = doc_attrib.CraftMetaId;

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

                return result;
            }

            CraftMetaId = recipe_attribute.CraftMetaId;

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

                syncOriginDocBaseWithNewDoc<CraftRecipeAttribute>(try_pending_doc);
            }

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

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

            craft_recipe_attrib.CraftMetaId = CraftMetaId;

            return result;
        }
    }

    public class RecipeAttributeTransactor : EntityAttributeTransactorBase<CraftRecipeAttribute>, ICopyEntityAttributeTransactorFromEntityAttribute
    {
        public RecipeAttributeTransactor(EntityBase owner)
            : base(owner)
        {
        }

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

            var to_cast_string = typeof(CraftRecipeAttribute).Name;

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

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

            copy_to_recipe_attribute.CraftMetaId = copy_from_recipe_attribute.CraftMetaId;

            return true;
        }
    }
}