Refactoring, database structure changed

WatchIt.DTO/Query/PagingQuery.cs

@@ -0,0 +1,28 @@
+using Microsoft.AspNetCore.Mvc;
+
+namespace WatchIt.DTO.Query;
+
+public sealed record PagingQuery
+{
+    [FromQuery(Name = "first")]
+    public int? First { get; set; }
+
+    [FromQuery(Name = "after")]
+    public int? After { get; set; }
+}
+
+public static class PagingQueryExtensions
+{
+    public static IQueryable<T> ApplyPaging<T>(this IQueryable<T> data, PagingQuery pagingQuery)
+    {
+        if (pagingQuery.After is not null)
+        {
+            data = data.Skip(pagingQuery.After.Value);
+        }
+        if (pagingQuery.First is not null)
+        {
+            data = data.Take(pagingQuery.First.Value);
+        }
+        return data;
+    }
+}