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


using Newtonsoft.Json;


using ServerCore; using ServerBase;


using USER_GUID = System.String;


namespace ServerCommon;



public class RepeatQuestAttribute : EntityAttributeBase, ICopyEntityAttributeFromDoc, IMergeWithEntityAttribute
{
    [JsonProperty()]
    public DateTime m_next_allocate_time { get; set; } = new();
    [JsonProperty()]
    public Int32 m_is_checking { get; set; } = 0;  //0 : not check, 1: checking


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

    public override void onClear()
    {
        m_next_allocate_time = new();
        m_is_checking = 0;

        getAttributeState().reset();
    }

    public override async Task<(Result, DynamoDbDocBase?)> toDocBase(bool isForQuery = true)
    {
        var owner = getOwner();
        NullReferenceCheckHelper.throwIfNull(owner, () => $"owner is null !!!");

        var result = new Result();

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

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

        USER_GUID user_guid = user_attribute.UserGuid;

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

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

            try_pending_doc = to_copy_doc;

            setTryPendingDocBase(try_pending_doc);
        }

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

        to_copy_repeat_quest_attrib.m_next_allocate_time = m_next_allocate_time;
        to_copy_repeat_quest_attrib.m_is_checking = m_is_checking;

        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 cloned = new RepeatQuestAttribute(getOwner());
        cloned.deepCopyFromBase(this);

        cloned.m_next_allocate_time = m_next_allocate_time;
        cloned.m_is_checking = m_is_checking;

        return cloned;
    }

    public Result onMerge(EntityAttributeBase otherEntityAttribute)
    {
        var result = new Result();

        var owner = getOwner();
        ArgumentNullException.ThrowIfNull(owner);

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

            return result;
        }

        //=====================================================================================
        // OtherAttribute => Attribute
        //=====================================================================================
        m_next_allocate_time = other_attribute.m_next_allocate_time;
        m_is_checking = other_attribute.m_is_checking;

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

            syncOriginDocBaseWithNewDoc<RepeatQuestAttribute>(try_pending_doc);
        }

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

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

        repeat_quest_attrib.m_next_allocate_time = m_next_allocate_time;
        repeat_quest_attrib.m_is_checking = m_is_checking;

        return result;
    }
    public bool copyEntityAttributeFromDoc(DynamoDbDocBase customDoc)
    {
        return true;
    }
    public override IEntityAttributeTransactor onNewEntityAttributeTransactor()
    {
        return new RepeatQuestAttributeTransactor(getOwner());
    }
}

public class RepeatQuestAttributeTransactor : EntityAttributeTransactorBase<RepeatQuestAttribute>
{
    public RepeatQuestAttributeTransactor(EntityBase owner)
        : base(owner)
    {
    }

    public bool copyEntityAttributeTransactorBaseFromEntityAttribute(EntityAttributeBase? entityAttributeBase)
    {
        //아직 미사용
        Log.getLogger().info("copyEntityDbTransactBaseFromEntityAttribute call");

        return true;
    }
}