using AutoMapper;

namespace DS.Module.AutoMapper;

/// <summary>
/// AutoMapper扩展类
/// </summary>
public static class AutoMapperExtension1
{
    /// <summary>
    /// 将源对象映射到目标对象
    /// </summary>
    /// <typeparam name="T">实体类型</typeparam>
    /// <param name="obj">源对象</param>
    /// <returns>转化之后的实体</returns>
    public static T MapTo<T>(this object obj)
    {
        if (obj == null) return default;
        var config = new MapperConfiguration(ctx => ctx.CreateMap(obj.GetType(), typeof(T)));
        var mapper = config.CreateMapper();
        return mapper.Map<T>(obj);
    }

    /// <summary>
    /// 映射
    /// </summary>
    /// <typeparam name="T"></typeparam>
    /// <param name="dto"></param>
    /// <param name="entity"></param>
    /// <returns></returns>
    public static T Map<T>(object dto, T entity)
    {
        var config = new MapperConfiguration(ctx => ctx.CreateMap(dto.GetType(), typeof(T)));
        var mapper = config.CreateMapper();
        var newModel = mapper.Map(dto, entity);
        return newModel;
    }

    /// <summary>
    /// 单个实体映射
    /// </summary>
    /// <typeparam name="TSource">源对象类型</typeparam>
    /// <typeparam name="TDestination">目标对象类型</typeparam>
    /// <param name="source"></param>
    /// <returns></returns>
    public static TDestination MapTo<TSource, TDestination>(this TSource source)
    {
        if (source == null) return default;
        var config = new MapperConfiguration(ctx => ctx.CreateMap<TSource, TDestination>());
        var mapper = config.CreateMapper();
        return mapper.Map<TDestination>(source);
    }

    /// <summary>
    /// 集合映射
    /// </summary>
    /// <typeparam name="TSource">源对象类型</typeparam>
    /// <typeparam name="TDestination">目标对象类型</typeparam>
    /// <param name="source"></param>
    /// <returns></returns>
    public static IEnumerable<TDestination> MapTo<TSource, TDestination>(this IList<TSource> source)
    {
        var config = new MapperConfiguration(cfg => cfg.CreateMap<TSource, TDestination>());
        var mapper = config.CreateMapper();
        return mapper.Map<IList<TDestination>>(source);
    }
}