ref: project structure

infrastructure/Persistence/PaginationExtensions.cs

@@ -0,0 +1,22 @@
+using Microsoft.EntityFrameworkCore;
+using mws.backend.dotnet.application.Common;
+
+namespace mws.backend.dotnet.infrastructure.Persistence;
+
+public static class PaginationExtensions
+{
+    public const int DefaultPageSize = 20;
+    public const int MaxPageSize = 100;
+
+    public static async Task<PagedResult<T>> ToPagedResultAsync<T>(
+        this IQueryable<T> query, int page, int pageSize, CancellationToken ct = default)
+    {
+        page = page < 1 ? 1 : page;
+        pageSize = pageSize < 1 ? DefaultPageSize : Math.Min(pageSize, MaxPageSize);
+
+        var totalCount = await query.CountAsync(ct);
+        var items = await query.Skip((page - 1) * pageSize).Take(pageSize).ToListAsync(ct);
+
+        return new PagedResult<T> { Items = items, TotalCount = totalCount, Page = page, PageSize = pageSize };
+    }
+}