feat: Permettre à l'élève de rendre un devoir avec réponse texte et pièces jointes

L'élève peut désormais répondre à un devoir via un éditeur WYSIWYG,
joindre des fichiers (PDF, JPEG, PNG, DOCX), sauvegarder un brouillon
et soumettre définitivement son rendu. Le système détecte automatiquement
les soumissions en retard par rapport à la date d'échéance.

Côté enseignant, une page dédiée affiche la liste complète des élèves
avec leur statut (soumis, en retard, brouillon, non rendu), le détail
de chaque rendu avec ses pièces jointes téléchargeables, et les
statistiques de rendus par classe.

backend/tests/Unit/Scolarite/Application/Query/GetStudentHomework/GetStudentHomeworkHandlerTest.php

@@ -14,8 +14,10 @@ use App\Scolarite\Application\Query\GetStudentHomework\GetStudentHomeworkQuery;
 use App\Scolarite\Domain\Model\Homework\Homework;
 use App\Scolarite\Domain\Model\Homework\HomeworkAttachment;
 use App\Scolarite\Domain\Model\Homework\HomeworkAttachmentId;
+use App\Scolarite\Domain\Model\HomeworkSubmission\HomeworkSubmission;
 use App\Scolarite\Infrastructure\Persistence\InMemory\InMemoryHomeworkAttachmentRepository;
 use App\Scolarite\Infrastructure\Persistence\InMemory\InMemoryHomeworkRepository;
+use App\Scolarite\Infrastructure\Persistence\InMemory\InMemoryHomeworkSubmissionRepository;
 use App\Shared\Domain\Tenant\TenantId;
 use DateTimeImmutable;
 use PHPUnit\Framework\Attributes\Test;
@@ -32,11 +34,13 @@ final class GetStudentHomeworkHandlerTest extends TestCase
 
     private InMemoryHomeworkRepository $homeworkRepository;
     private InMemoryHomeworkAttachmentRepository $attachmentRepository;
+    private InMemoryHomeworkSubmissionRepository $submissionRepository;
 
     protected function setUp(): void
     {
         $this->homeworkRepository = new InMemoryHomeworkRepository();
         $this->attachmentRepository = new InMemoryHomeworkAttachmentRepository();
+        $this->submissionRepository = new InMemoryHomeworkSubmissionRepository();
     }
 
     #[Test]
@@ -190,6 +194,73 @@ final class GetStudentHomeworkHandlerTest extends TestCase
         self::assertFalse($result[0]->hasAttachments);
     }
 
+    #[Test]
+    public function itReturnsNullSubmissionStatusWhenNoSubmission(): void
+    {
+        $handler = $this->createHandler();
+        $this->givenHomework('Devoir sans rendu', '2026-04-15');
+
+        $result = $handler(new GetStudentHomeworkQuery(
+            studentId: self::STUDENT_ID,
+            tenantId: self::TENANT_ID,
+        ));
+
+        self::assertCount(1, $result);
+        self::assertNull($result[0]->submissionStatus);
+    }
+
+    #[Test]
+    public function itReturnsSubmissionStatusWhenDraftExists(): void
+    {
+        $handler = $this->createHandler();
+        $homework = $this->givenHomework('Devoir avec brouillon', '2026-04-15');
+
+        $submission = HomeworkSubmission::creerBrouillon(
+            tenantId: TenantId::fromString(self::TENANT_ID),
+            homeworkId: $homework->id,
+            studentId: UserId::fromString(self::STUDENT_ID),
+            responseHtml: '<p>Brouillon</p>',
+            now: new DateTimeImmutable('2026-03-24 10:00:00'),
+        );
+        $this->submissionRepository->save($submission);
+
+        $result = $handler(new GetStudentHomeworkQuery(
+            studentId: self::STUDENT_ID,
+            tenantId: self::TENANT_ID,
+        ));
+
+        self::assertCount(1, $result);
+        self::assertSame('draft', $result[0]->submissionStatus);
+    }
+
+    #[Test]
+    public function itReturnsSubmittedStatusAfterSubmission(): void
+    {
+        $handler = $this->createHandler();
+        $homework = $this->givenHomework('Devoir soumis', '2026-04-15');
+
+        $submission = HomeworkSubmission::creerBrouillon(
+            tenantId: TenantId::fromString(self::TENANT_ID),
+            homeworkId: $homework->id,
+            studentId: UserId::fromString(self::STUDENT_ID),
+            responseHtml: '<p>Réponse</p>',
+            now: new DateTimeImmutable('2026-03-24 10:00:00'),
+        );
+        $submission->soumettre(
+            dueDate: new DateTimeImmutable('2026-04-15'),
+            now: new DateTimeImmutable('2026-03-24 11:00:00'),
+        );
+        $this->submissionRepository->save($submission);
+
+        $result = $handler(new GetStudentHomeworkQuery(
+            studentId: self::STUDENT_ID,
+            tenantId: self::TENANT_ID,
+        ));
+
+        self::assertCount(1, $result);
+        self::assertSame('submitted', $result[0]->submissionStatus);
+    }
+
     private function createHandler(?string $classId = self::CLASS_ID): GetStudentHomeworkHandler
     {
         $studentClassReader = new class($classId) implements StudentClassReader {
@@ -231,6 +302,7 @@ final class GetStudentHomeworkHandlerTest extends TestCase
             $studentClassReader,
             $this->homeworkRepository,
             $this->attachmentRepository,
+            $this->submissionRepository,
             $displayReader,
         );
     }