PageSitemapSpec

src/Moonglade.Data/SiteMapInfo.cs

@@ -0,0 +1,8 @@
+namespace Moonglade.Data;
+
+public class SiteMapInfo
+{
+    public string Slug { get; set; }
+    public DateTime CreateTimeUtc { get; set; }
+    public DateTime? UpdateTimeUtc { get; set; }
+}

src/Moonglade.Data/Specifications/PageSitemapSpec.cs

@@ -0,0 +1,18 @@
+using Moonglade.Data.Entities;
+
+namespace Moonglade.Data.Specifications;
+
+public sealed class PageSitemapSpec : Specification<PageEntity, SiteMapInfo>
+{
+    public PageSitemapSpec()
+    {
+        Query.Where(p => p.IsPublished);
+        Query.Select(p => new SiteMapInfo
+        {
+            Slug = p.Slug,
+            CreateTimeUtc = p.CreateTimeUtc,
+            UpdateTimeUtc = p.UpdateTimeUtc
+        });
+        Query.AsNoTracking();
+    }
+}

src/Moonglade.Web/Middleware/SiteMapMiddleware.cs

@@ -56,18 +56,13 @@ private static async Task<string> GetSiteMapData(
             }
 
             // Pages
-            var pages = await pageRepo.SelectAsync(page => new Tuple<DateTime, DateTime?, string, bool>(
-                page.CreateTimeUtc,
-                page.UpdateTimeUtc,
-                page.Slug,
-                page.IsPublished), ct);
-
-            foreach (var (createdTimeUtc, updateTimeUtc, slug, isPublished) in pages.Where(p => p.Item4))
+            var pages = await pageRepo.ListAsync(new PageSitemapSpec(), ct);
+            foreach (var page in pages)
             {
                 writer.WriteStartElement("url");
-                writer.WriteElementString("loc", $"{siteRootUrl}/page/{slug.ToLower()}");
-                writer.WriteElementString("lastmod", createdTimeUtc.ToString("yyyy-MM-dd", CultureInfo.InvariantCulture));
-                writer.WriteElementString("changefreq", GetChangeFreq(createdTimeUtc, updateTimeUtc));
+                writer.WriteElementString("loc", $"{siteRootUrl}/page/{page.Slug.ToLower()}");
+                writer.WriteElementString("lastmod", page.CreateTimeUtc.ToString("yyyy-MM-dd", CultureInfo.InvariantCulture));
+                writer.WriteElementString("changefreq", GetChangeFreq(page.CreateTimeUtc, page.UpdateTimeUtc));
                 await writer.WriteEndElementAsync();
             }