using System;
using System.Threading.Tasks;


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


using ServerCore;
using ServerBase;

using ServerControlCenter;


using USER_GUID = System.String;


namespace ServerCommon;

public class BlockUserAttribute : EntityAttributeBase, ICopyEntityAttributeFromDoc, IMergeWithEntityAttribute
{
    [JsonProperty]
    public USER_GUID UserGuid { get; set; } = string.Empty;
    [JsonProperty]
    public USER_GUID BlockGuid { get; set; } = string.Empty;
    [JsonProperty]
    public string Nickname { get; set; } = string.Empty;

    public Int32 IsNew { get; set; } = 0;

    public DateTime CreateTime { get; set; } = DateTimeHelper.MinTime;



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

    public override void onClear()
    {
        UserGuid = string.Empty;
        BlockGuid = string.Empty;
        Nickname = string.Empty;
        IsNew = 0;
        CreateTime = DateTimeHelper.MinTime;

        getAttributeState().reset();
    }


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

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

        //=====================================================================================
        // Attribute => try pending Doc
        //=====================================================================================
        USER_GUID user_guid = acoount_attribute.UserGuid;

        var try_pending_doc = getTryPendingDocBase() as BlockUserDoc;
        if (null == try_pending_doc)
        {
            var to_copy_doc = new BlockUserDoc(user_guid, BlockGuid);

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

            try_pending_doc = to_copy_doc;

            setTryPendingDocBase(try_pending_doc);
        }

        var to_copy_block_user_attrib = try_pending_doc.getAttrib<BlockUserAttrib>();
        NullReferenceCheckHelper.throwIfNull(to_copy_block_user_attrib, () => $"to_copy_block_user_attrib is null !!! - {toBasicString()}");
        to_copy_block_user_attrib.BlockGuid = BlockGuid;
        to_copy_block_user_attrib.IsNew = IsNew;

        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 = getOwner();
        NullReferenceCheckHelper.throwIfNull(owner, () => $"owner is null !!! - {toBasicString()}");


        var cloned = new BlockUserAttribute(owner);
        cloned.deepCopyFromBase(this);

        cloned.BlockGuid = BlockGuid;
        cloned.IsNew = IsNew;
        cloned.CreateTime = CreateTime;
        cloned.Nickname = Nickname;

        return cloned;
    }

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

        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;
        }

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

            return result;
        }

        //=====================================================================================
        // OtherAttribute => Attribute
        //=====================================================================================
        UserGuid = other_attribute.UserGuid;
        BlockGuid = other_attribute.BlockGuid;  
        Nickname = other_attribute.Nickname;
        IsNew = other_attribute.IsNew;
        CreateTime = other_attribute.CreateTime;

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

            syncOriginDocBaseWithNewDoc<BlockUserAttribute>(try_pending_doc);
        }

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

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

        block_user_attrib.BlockGuid = BlockGuid;
        block_user_attrib.IsNew = IsNew;

        return result;
    }


    public bool copyEntityAttributeFromDoc(DynamoDbDocBase? docBase)
    {
        var block_user_doc_base = docBase as BlockUserDoc;
        if (null == block_user_doc_base)
        {
            var to_cast_string = typeof(BlockUserDoc).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<BlockUserAttribute>(block_user_doc_base);

        //=====================================================================================
        // Doc => Attribute
        //=====================================================================================
        var doc_attrib = block_user_doc_base.getAttrib<BlockUserAttrib>();
        NullReferenceCheckHelper.throwIfNull(doc_attrib, () => $"doc_attrib is null !!! - {toBasicString()}");

        BlockGuid = doc_attrib.BlockGuid;
        IsNew = doc_attrib.IsNew;

        return true;

    }

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


public class BlockUsersAtrributeTransactor : EntityAttributeTransactorBase<BlockUserAttribute>
{
    public BlockUsersAtrributeTransactor(EntityBase owner) 
        : base(owner)
    {
    }

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

        return true;
    }
}