structure app by rest api standards

add getusers tidy up BusinessException
2026-04-22 12:36:34 +00:00 · 2024-11-14 22:45:36 +02:00
parent ace57eaf27
commit 4bc76bbbac
12 changed files with 182 additions and 37 deletions
@@ -0,0 +1,54 @@
+using System.ComponentModel;
+using System.Reflection;
+
+namespace Azaion.Common.Extensions;
+
+/// <summary>Enum extensions</summary>
+public static class EnumExtensions
+{
+    /// <summary>Get all enums with descriptions </summary>
+    public static Dictionary<T, string> GetDescriptions<T>() where T : Enum =>
+        Enum.GetValues(typeof(T)).Cast<T>()
+            .ToDictionary(x => x, x => x.GetEnumAttrib<T, DescriptionAttribute>()?.Description ?? x.ToString());
+
+    /// <summary>
+    /// Get the Description from the DescriptionAttribute.
+    /// </summary>
+    /// <param name="enumValue"></param>
+    /// <returns></returns>
+    public static string GetDescription(this Enum enumValue)
+    {
+        return enumValue.GetType()
+            .GetMember(enumValue.ToString())
+            .First()
+            .GetCustomAttribute<DescriptionAttribute>()?
+            .Description ?? enumValue.ToString();
+    }
+
+    /// <summary> Get attribute for enum's member, usually is used for getting Description attribute </summary>
+    public static TAttrib GetEnumAttrib<T, TAttrib>(this T value) where T: Enum
+    {
+        var field = value.GetType().GetField(value.ToString());
+        if (field == null)
+            return default; 
+            
+        return field.GetCustomAttributes(typeof(TAttrib), false)
+            .Cast<TAttrib>()
+            .FirstOrDefault();   
+    }
+        
+    /// <summary>
+    /// Get default value for enum
+    /// </summary>
+    /// <typeparam name="TEnum"></typeparam>
+    /// <returns></returns>
+    public static TEnum GetDefaultValue<TEnum>() where TEnum : struct
+    {
+        var t = typeof(TEnum);
+        var attributes = (DefaultValueAttribute[])t.GetCustomAttributes(typeof(DefaultValueAttribute), false);
+        if (attributes is { Length: > 0 })
+            return (TEnum)attributes[0].Value!;
+
+        return default;
+    }
+}