feat(class): improve class/id/student

backend/api/routes/students.py

@@ -281,6 +281,67 @@ async def update_student(
     )
 
 
+@router.patch("/{student_id}/email", response_model=StudentWithClass)
+async def update_student_email(
+    student_id: int,
+    email: str,
+    session: AsyncSessionDep,
+):
+    """
+    Modifie rapidement l'email d'un étudiant.
+    Endpoint optimisé pour l'édition inline.
+    """
+    # Récupérer l'étudiant
+    query = (
+        select(Student)
+        .options(
+            selectinload(Student.enrollments).selectinload(StudentEnrollment.class_group)
+        )
+        .where(Student.id == student_id)
+    )
+    result = await session.execute(query)
+    student = result.scalar_one_or_none()
+    
+    if not student:
+        raise HTTPException(status_code=404, detail="Étudiant non trouvé")
+    
+    # Vérifier l'unicité du nouvel email si fourni
+    if email and email != student.email:
+        existing_query = select(Student).where(
+            Student.email == email,
+            Student.id != student_id
+        )
+        existing_result = await session.execute(existing_query)
+        if existing_result.scalar_one_or_none():
+            raise HTTPException(
+                status_code=400,
+                detail=f"Un autre élève avec l'email '{email}' existe déjà"
+            )
+    
+    # Mettre à jour l'email (permet de le vider avec chaîne vide)
+    student.email = email if email else None
+    
+    await session.commit()
+    await session.refresh(student)
+    
+    # Trouver la classe actuelle
+    current_enrollment = None
+    for enrollment in student.enrollments:
+        if enrollment.departure_date is None:
+            current_enrollment = enrollment
+            break
+    
+    return StudentWithClass(
+        id=student.id,
+        last_name=student.last_name,
+        first_name=student.first_name,
+        email=student.email,
+        full_name=f"{student.first_name} {student.last_name}",
+        current_class_id=current_enrollment.class_group_id if current_enrollment else None,
+        current_class_name=current_enrollment.class_group.name if current_enrollment else None
+    )
+
+
 @router.delete("/{student_id}", status_code=204)
 async def delete_student(
     student_id: int,