refactor: ♻️ 2.0 (#3)

src/backend/NSExt/Extensions/EnumExtensions.cs

@@ -0,0 +1,41 @@
+using System.ComponentModel.DataAnnotations;
+using System.Reflection;
+using NSExt.Attributes;
+
+namespace NSExt.Extensions;
+
+/// <summary>
+///     EnumExtensions
+/// </summary>
+public static class EnumExtensions
+{
+    /// <summary>
+    ///     获取显示特性
+    /// </summary>
+    public static DisplayAttribute GetDisplay(this Enum me)
+    {
+        return me.GetAttributeOfType<DisplayAttribute>();
+    }
+
+    /// <summary>
+    ///     获取枚举的本地化资源描述
+    /// </summary>
+    public static string ResDesc<T>(this Enum e)
+    {
+        var typeOfEnum  = e.GetType();
+        var typeOfField = typeOfEnum.GetField(Enum.GetName(typeOfEnum, e)!);
+        var resDescAttr = typeOfField!.GetCustomAttribute<ResourceDescriptionAttribute<T>>(true);
+        return resDescAttr is null
+            ? Enum.GetName(typeOfEnum, e)
+            : typeof(T).GetProperty(resDescAttr.ResourceName)?.GetValue(default) as string;
+    }
+
+    /// <summary>
+    ///     通过类泛型类型获取特性
+    /// </summary>
+    private static T GetAttributeOfType<T>(this Enum me)
+        where T : Attribute
+    {
+        return me.GetType().GetMember(me.ToString())[0].GetCustomAttributes<T>(false).FirstOrDefault();
+    }
+}