can write and read notes

src/Controller/GuiController.php

@@ -1,8 +1,15 @@
 <?php
 namespace App\Controller;
 
+use App\Entity\Note;
+use App\Form\Type\NoteType;
+use DateTime;
+use DateTimeZone;
+use Doctrine\ORM\EntityManagerInterface;
 use Symfony\Bridge\Twig\Attribute\Template;
 use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpFoundation\Response;
 use Symfony\Component\Routing\Annotation\Route;
 
 class GuiController extends AbstractController {
@@ -14,4 +21,66 @@ class GuiController extends AbstractController {
             'description' => 'Joe Carstairs\' personal website',
         ];
     }
+
+    #[Route('/notes', name: 'notes')]
+    #[Template('/notes.html.twig')]
+    public function notes(): Array {
+        return [
+            'title' => 'Joe Carstairs\' notes',
+            'description' => 'Joe Carstairs\' notes',
+        ];
+    }
+
+    #[Route('/note/{slug}', name: 'note')]
+    #[Template('/note.html.twig')]
+    public function note(
+        EntityManagerInterface $entityManager,
+        string $slug,
+    ): array {
+        $repository = $entityManager->getRepository(Note::class);
+        $note = $repository->findOneBy(['slug' => $slug]);
+
+        return [
+            'title' => 'Joe Carstairs\' notes',
+            'description' => 'Joe Carstairs\' notes',
+            'note' => $note,
+        ];
+    }
+
+    #[Route('/notes/write')]
+    #[Template('/write_note.html.twig')]
+    public function writeNote(
+        EntityManagerInterface $entityManager,
+        Request $request,
+    ): Response {
+        $note = new Note();
+        $form = $this->createForm(NoteType::class, $note);
+
+        $form->handleRequest($request);
+        if ($form->isSubmitted() && $form->isValid()) {
+            $note = $form->getData();
+
+            $now = new DateTime('now');
+            $note->setPublishedDate($now);
+
+            $num_existing_notes_today = $entityManager->getRepository(Note::class)->countWherePublishedOnDate($now);
+            $note->getPublishedDate()->setTimezone(new DateTimeZone('Europe/London'));
+            $slug = $note->getPublishedDate()->format('Y-m-d');
+            if ($num_existing_notes_today > 0) {
+                $slug = $slug . '-' . $num_existing_notes_today;
+            }
+            $note->setSlug($slug);
+
+            $entityManager->persist($note);
+            $entityManager->flush();
+
+            return $this->redirectToRoute('note', ['slug' => $note->getSlug()]);
+        }
+
+        return $this->render('/write_note.html.twig', [
+            'title' => 'Write for Joe Carstairs',
+            'description' => 'The authoring page for Joe Carstairs\' personal website',
+            'form' => $form,
+        ]);
+    }
 }