Conditionally hide and show post.

When the user has no post, post in first pages are not shown and the
posts page is hidden from the navbar.

src/layouts/Base.astro

@@ -1,4 +1,5 @@
 ---
+
 import config from '@/config'
 import Link from '@/components/Link.astro'
 import 'katex/dist/katex.min.css'
@@ -12,6 +13,10 @@ import '@/themes/modern.css'
 // import '@/themes/colorful.css'
 // import '@/themes/mono.css'
 // import '@/themes/sober.css'
+
+
+const posts = import.meta.glob<MarkdownInstance<PostFrontmatter>>('../pages/posts/*.md', { eager: true })
+
 ---
 
 <!doctype html>
@@ -79,7 +84,10 @@ import '@/themes/modern.css'
             <nav>
                 <div class="nav-item"><Link href="/">Home</Link></div>
                 <div class="nav-item"><Link href="/appunti">Appunti</Link></div>
+                { (Object.values(posts) != undefined &&
+                Object.values(posts).length != 0) ? (
                 <div class="nav-item"><Link href="/posts">Post</Link></div>
+                ) : ( <></> ) }
             </nav>
         </header>
 

src/pages/index.astro

@@ -17,7 +17,10 @@ const posts = import.meta.glob<MarkdownInstance<PostFrontmatter>>('./posts/*.md'
                 articoli su vari argomenti, appunti di studio e molto altro.
             </p>
         </div>
+        <div>
+        { (Object.values(posts) != undefined && Object.values(posts).length != 0) ?  (
         <h2>Post Recenti</h2>
+        </div>
         <div class="card-list">
             {
                 Object.values(posts)
@@ -39,5 +42,8 @@ const posts = import.meta.glob<MarkdownInstance<PostFrontmatter>>('./posts/*.md'
                     ))
             }
         </div>
+
+        ) : (<></>)
+        }
     </main>
 </Base>