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


using Google.Protobuf.WellKnownTypes;
using MetaAssets;
using Newtonsoft.Json;


using ServerCore; using ServerBase;


using USER_GUID = System.String;


namespace ServerCommon
{
    public class QuestMailAttribute : EntityAttributeBase, ICopyEntityAttributeFromDoc, IMergeWithEntityAttribute
    {
        [JsonProperty()]
        public UInt32 QuestId { get; set; } = 0;
        [JsonProperty()]
        public UInt32 QuestRevision { get; set; } = 0;
        //[JsonProperty()]
        //public EQuestType QuestType { get; set; } = EQuestType.NONE;
        //[JsonProperty()]
        //UgqStateType UgqState { get; set; } = UgqStateType.None;

        [JsonProperty()] public DateTime CreateTime { get; set; } = DateTimeHelper.Current;
        [JsonProperty()] public DateTime? ExpireTime { get; set; }

        [JsonProperty()]
        public Int32 IsRead { get; set; } = 0;

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

        public override void onClear()
        {
            QuestId = 0;
            QuestRevision = 0;
            //UgqState = UgqStateType.None;
            CreateTime = DateTimeHelper.MinTime;
            ExpireTime = null;
            IsRead = 0;
        
            getAttributeState().reset();
        }

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

            var acoount_attribute = owner.getRootParent().getEntityAttribute<AccountAttribute>();
            NullReferenceCheckHelper.throwIfNull(acoount_attribute, () => $"acoount_attribute is null !!! - {owner.toBasicString()}");

            USER_GUID user_guid = acoount_attribute.UserGuid;

            //=====================================================================================
            // Attribute => try pending Doc
            //=====================================================================================
            var try_pending_doc = getTryPendingDocBase() as QuestMailDoc;
            if (null == try_pending_doc)
            {
                var to_copy_doc = (MetaHelper.GameConfigMeta.QuestMailStoragePeriod <= 0)
                                ? new QuestMailDoc(user_guid, QuestId, QuestRevision)
                                : new QuestMailDoc(user_guid, QuestId, QuestRevision, MetaHelper.GameConfigMeta.QuestMailStoragePeriod);

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

                try_pending_doc = to_copy_doc;

                setTryPendingDocBase(try_pending_doc);
            }

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

            to_copy_quest_mail_attrib.QuestId = QuestId;
            to_copy_quest_mail_attrib.QuestRevision = QuestRevision;
            to_copy_quest_mail_attrib.CreateTime = CreateTime;
            to_copy_quest_mail_attrib.ExpireTime = ExpireTime;
            to_copy_quest_mail_attrib.IsRead = IsRead;

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

            var cloned = new QuestMailAttribute(getOwner(), owner_entity_type);
            cloned.deepCopyFromBase(this);
            cloned.QuestId = QuestId;
            cloned.QuestRevision = QuestRevision;
            cloned.CreateTime = CreateTime;
            cloned.ExpireTime = ExpireTime;
            cloned.IsRead = IsRead;

            return cloned;
        }

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

            var result = new Result();

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

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

                return result;
            }

            //=====================================================================================
            // OtherAttribute => Attribute
            //=====================================================================================
            IsRead = other_attribute.IsRead;
            QuestRevision = other_attribute.QuestRevision;
            CreateTime = other_attribute.CreateTime;
            ExpireTime = other_attribute.ExpireTime;
            QuestId = other_attribute.QuestId;

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

                syncOriginDocBaseWithNewDoc<QuestMailAttribute>(try_pending_doc);
            }

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

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

            quest_mail_attrib.IsRead = IsRead;
            quest_mail_attrib.QuestRevision = QuestRevision;
            quest_mail_attrib.CreateTime = CreateTime;
            quest_mail_attrib.ExpireTime = ExpireTime;
            quest_mail_attrib.QuestId = QuestId;

            return result;
        }


        public bool copyEntityAttributeFromDoc(DynamoDbDocBase customDoc)
        {
            var quest_mail_doc_base = customDoc as QuestMailDoc;

            if (null == quest_mail_doc_base)
            {
                var to_cast_string = typeof(QuestMailDoc).Name;
                var err_msg = $"Failed to copyEntityAttributeFromDoc() !!!, item_doc_base is null :{to_cast_string}";
                Log.getLogger().error(err_msg);
                return false;
            }

            //=====================================================================================
            // New Doc => Origin Doc
            //=====================================================================================
            syncOriginDocBaseWithNewDoc<QuestMailAttribute>(quest_mail_doc_base);

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

            QuestId = doc_attrib.QuestId;
            QuestRevision = doc_attrib.QuestRevision;
            CreateTime = doc_attrib.CreateTime;
            ExpireTime = doc_attrib.ExpireTime;
            IsRead = doc_attrib.IsRead;
            
            return true;
        }


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


        public class QuestMailAttributeTransactor : EntityAttributeTransactorBase<QuestMailAttribute>, ICopyEntityAttributeTransactorFromEntityAttribute
        {
            public QuestMailAttributeTransactor(EntityBase owner)
                : base(owner)
            {
            }

            public bool copyEntityAttributeTransactorFromEntityAttribute(EntityAttributeBase entityAttributeBase)
            {
                //아직 미사용
                Log.getLogger().info("copyEntityDbTransactBaseFromEntityAttribute call");
                return true;
            }
        }
    }
}