using System;
using System.Collections.Generic;
using System.Text;

namespace Faclon.Extend
{
    /// <summary>
    /// Object扩展
    /// </summary>
    public static class ObjectExtend
    {
        /// <summary>
        /// 将当前对象属性赋值到目标对象属性中。
        /// </summary>
        /// <param name="source">当前对象</param>
        /// <param name="target">目标属性</param>
        /// <param name="option">复制选项</param>
        public static void CopyTo(this object source,object target,ObjectCopyToOption option = null) {
            if(source == null)
                throw new ArgumentNullException(nameof(source));
            if(target == null)
                throw new ArgumentNullException(nameof(target));
            option = option ?? ObjectCopyToOption.Default;
            foreach(var ps in source.GetType().GetProperties()) {
                if(ps.CanRead) {
                    var pt = target.GetType().GetProperty(ps.Name);
                    if(pt.CanWrite && ps.PropertyType.IsAssignableFrom(pt.PropertyType)) {
                        pt.SetValue(target,ps.GetValue(source,null),null);
                    }
                }
            }
        }

        /// <summary>
        /// 根据提供的更新方法更新目标对象属性
        /// </summary>
        /// <typeparam name="TSource">原对象类型</typeparam>
        /// <typeparam name="TTarget">目标对象类型</typeparam>
        /// <param name="source">原对象</param>
        /// <param name="target">目标对象</param>
        /// <param name="action">转换方法</param>
        public static void CopyTo<TSource, TTarget>(this TSource source,TTarget target,Action<TSource,TTarget> action) {
            action(source,target);
        }
    }
}