Add pagination utils

src/BHC24.Api/Extensions/QueryableExtensions.cs

@@ -1,4 +1,5 @@
 using System.Runtime.CompilerServices;
+using BHC24.Api.Models;
 using Microsoft.EntityFrameworkCore;
 
 namespace BHC24.Api.Extensions;
@@ -13,4 +14,21 @@ public static async IAsyncEnumerable<TEntity> ToAsyncEnumerable<TEntity>(this IQ
             yield return entity;
         }
     }
+
+    public static async Task<PaginationResponse<TEntity>> PaginateAsync<TEntity>(
+        this IQueryable<TEntity> query, int page, int pageSize, CancellationToken ct = default)
+    {
+        var totalItems = await query.CountAsync(ct);
+        var items = await query.Skip((page - 1) * pageSize)
+            .Take(pageSize)
+            .ToListAsync(ct);
+
+        return new PaginationResponse<TEntity>
+        {
+            Data = items,
+            TotalCount = totalItems,
+            Page = page,
+            PageSize = pageSize
+        };
+    }
 }

src/BHC24.Api/Models/PaginationRequest.cs

@@ -0,0 +1,3 @@
+namespace BHC24.Api.Models;
+
+public record PaginationRequest(int Page = 1, int PageSize = 20);

src/BHC24.Api/Models/PaginationResponse.cs

@@ -0,0 +1,9 @@
+namespace BHC24.Api.Models;
+
+public class PaginationResponse<T>
+{
+    public int TotalCount { get; set; }
+    public int Page { get; set; }
+    public int PageSize { get; set; }
+    public IEnumerable<T> Data { get; set; }
+}