Initial commit - Auth

Auth.Core/Utility/QueryableExtensions.cs

@@ -0,0 +1,30 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Linq.Expressions;
+using System.Threading.Tasks;
+
+namespace Auth.Core.Utility;
+
+public static class QueryableExtensions
+{
+    public static IQueryable<T> ApplySorting<T>(this IQueryable<T> source, SortModel sortBy)
+    {
+        // Parameter for lambda expression, e.g., "p" in "p => p.Property"
+        var parameter = Expression.Parameter(typeof(T), "p");
+
+        // Access the property on the parameter, e.g., "p.Property"
+        var property = Expression.Property(parameter, sortBy.SortBy);
+
+        // Cast property access to an object (boxing value types)
+        var converted = Expression.Convert(property, typeof(object));
+
+        // Create the lambda expression, e.g., "p => (object)p.Property"
+        var keySelector = Expression.Lambda<Func<T, object>>(converted, parameter);
+
+        // Apply OrderBy or OrderByDescending based on the ascending flag
+        return sortBy.SortDirection == SortDir.Ascending
+            ? source.OrderBy(keySelector)
+            : source.OrderByDescending(keySelector);
+    }
+}