Refactoring, database structure changed

WatchIt.DTO/Query/OrderQuery.cs

@@ -0,0 +1,38 @@
+using System.Linq.Expressions;
+using Microsoft.AspNetCore.Mvc;
+using Refit;
+using WatchIt.Database.Model.Media;
+
+namespace WatchIt.DTO.Query;
+
+public class OrderQuery
+{
+    #region PROPERTIES
+    
+    [FromQuery(Name = "order_asc")]
+    [AliasAs("order_asc")]
+    public bool OrderAscending { get; set; }
+    
+    [FromQuery(Name = "order_by")]
+    [AliasAs("order_by")]
+    public string? OrderBy { get; set; }
+
+    #endregion
+}
+
+public static class OrderQueryExtensions
+{
+    public static IQueryable<T> ApplyOrder<T>(this IQueryable<T> data, OrderQuery orderQuery, params IDictionary<string, Expression<Func<T, object?>>>[] orderKeys)
+    {
+        if (orderQuery.OrderBy is not null)
+        {
+            Dictionary<string, Expression<Func<T, object?>>> orderByKeys = orderKeys.SelectMany(x => x)
+                                                                                         .ToDictionary(x => x.Key, x => x.Value);
+            if (orderByKeys.TryGetValue(orderQuery.OrderBy, out Expression<Func<T, object?>>? orderFunc))
+            {
+                data = orderQuery.OrderAscending ? data.OrderBy(orderFunc) : data.OrderByDescending(orderFunc);
+            }
+        }
+        return data;
+    }
+}