Get all projects and update sitemaps for it immediatly as well

astro/src/pages/sitemap/index.xml.ts

@@ -1,4 +1,5 @@
 import { getAllBlogs } from "@/content/blogs/blogs";
+import { getAllProjects } from "@/content/projects/projects";
 import { getSettings } from "@/content/settings/settings";
 import type { APIRoute } from "astro";
 import minifyXML from "minify-xml";
@@ -36,9 +37,25 @@ export const GET = (async () => {
         });
     };
     if (settings.project.enabled) {
+        const projectLastModifieds = [
+            settings.project.lastModified,
+            settings.sitemap.lastModified,
+            settings.website.lastModified
+        ];
+
+        let projects = await getAllProjects(settings);
+
+        projects.forEach((project) => {
+            projectLastModifieds.push(project.lastModified);
+        });
+
+        const lastModifiedProjects = projectLastModifieds.sort((a: Date, b: Date) => {
+            return b.getTime() - a.getTime();
+        });
+
         sitemapIndex.push({
             url: "/sitemap/projects.xml",
-            lastModified: new Date()
+            lastModified: lastModifiedProjects[0]
         });
     };
     if (settings.photo.enabled) {