namespace XFEExtension.NetCore.ObjectExtension;

/// <summary>
/// 所有类的基类的拓展
/// </summary>
public static class ObjectExtension
{
    /// <summary>
    /// 进行浅拷贝
    /// </summary>
    /// <typeparam name="T"></typeparam>
    /// <param name="source"></param>
    /// <returns>浅拷贝后的对象</returns>
    /// <exception cref="ArgumentNullException">无类型错误</exception>
    public static T ActiveCopyOf<T>(this T source) where T : class
    {
        return source is null
            ? throw new ArgumentNullException(nameof(source))
            : (T)source.GetType().GetMethod("MemberwiseClone", System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic)?.Invoke(source, null)!;
    }
    /// <summary>
    /// 进行静态拷贝
    /// </summary>
    /// <typeparam name="T"></typeparam>
    /// <param name="source"></param>
    /// <returns>静态拷贝后的对象</returns>
    public static T? StaticCopyOf<T>(this T source) where T : class
    {
        if (source is null)
        {
            return default;
        }
        var fields = typeof(T).GetFields();
        var properties = typeof(T).GetProperties();
        var newObject = Activator.CreateInstance<T>();
        foreach (var property in properties)
        {
            property.SetValue(newObject, property.GetValue(source));
        }
        foreach (var field in fields)
        {
            field.SetValue(newObject, field.GetValue(source));
        }
        return newObject;
    }
    /// <summary>
    /// 比较两个对象的属性是否完全相同而非对象本身相同
    /// </summary>
    /// <typeparam name="T"></typeparam>
    /// <param name="obj1"></param>
    /// <param name="obj2"></param>
    /// <returns></returns>
    public static bool AboutEqual<T>(this T obj1, T obj2)
    {
        if (obj1 is null && obj2 is null)
        {
            return true;
        }

        if (obj1 is null || obj2 is null)
        {
            return false;
        }

        Type type = typeof(T);
        var properties = type.GetProperties();
        var fields = type.GetFields();
        foreach (var property in properties)
        {
            var value1 = property.GetValue(obj1);
            var value2 = property.GetValue(obj2);

            if (!Equals(value1, value2))
            {
                return false;
            }
        }
        foreach (var field in fields)
        {
            var value1 = field.GetValue(obj1);
            var value2 = field.GetValue(obj2);

            if (!Equals(value1, value2))
            {
                return false;
            }
        }
        return true;
    }
}