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


using ServerCore;
using ServerBase;
using MetaAssets;


namespace ServerCommon;

public static class DataCopyHelper
{
    #region 데이터 복사 하기 : Meta => Doc 
    public static async Task<Result> copyDocFromMetas<TDoc>(TDoc toDoc, List<MetaAssets.IMetaData> fromMetaDatas)
        where TDoc : DynamoDbDocBase
    {
        var result = new Result();
        var err_msg = string.Empty;

        var to_doc = toDoc as ICopyDocFromMeta;
        if (null == to_doc)
        {
            err_msg = $"Failed to cast ICopyDocFromMeta !!! : {typeof(TDoc).Name}";
            result.setFail(ServerErrorCode.ClassDoesNotImplementInterfaceInheritance, err_msg);
            Log.getLogger().error(result.toBasicString());

            return result;
        }

        foreach (var meta_data in fromMetaDatas)
        {
            if (false == to_doc.copyDocFromMeta(meta_data))
            {
                err_msg = $"Failed to copyDocFromMeta() !!!, to:{typeof(TDoc).Name}, from:{meta_data.getTypeName()}";
                result.setFail(ServerErrorCode.MetaDataCopyToDynamoDbDocFailed, err_msg);
                Log.getLogger().error(result.toBasicString());

                return result;
            }
        }

        return await Task.FromResult(result);
    }
    #endregion

    #region 데이터 복사 하기 : Meta => EntityAttribute 
    public static async Task<Result> copyEntityAttributeFromMetas<TEntityAttributeType>(TEntityAttributeType toDocBase, List<MetaAssets.IMetaData> metaDatas)
        where TEntityAttributeType : EntityAttributeBase
    {
        var result = new Result();
        var err_msg = string.Empty;

        var to_copy = toDocBase as ICopyEntityAttributeFromMeta;
        if (null == to_copy)
        {
            err_msg = $"Failed to cast ICopyEntityAttributeFromMeta !!! : {typeof(TEntityAttributeType).Name} !!!";
            result.setFail(ServerErrorCode.ClassDoesNotImplementInterfaceInheritance, err_msg);
            Log.getLogger().error(result.toBasicString());

            return result;
        }

        foreach (var meta_data in metaDatas)
        {
            if (false == to_copy.copyEntityAttributeFromMeta(meta_data))
            {
                err_msg = $"Failed to copyEntityAttributeFromMeta() !!!, to:{typeof(TEntityAttributeType).Name}, from:{meta_data.getTypeName()}";
                result.setFail(ServerErrorCode.MetaDataCopyToEntityAttributeFailed, err_msg);
                Log.getLogger().error(result.toBasicString());

                return result;
            }
        }

        return await Task.FromResult(result);
    }
    #endregion
}