last message

backend/app/main.py

@@ -155,6 +155,29 @@ def create_student_account(
     return schemas.StudentAccountResponse(student=student, user=user)
 
 
+@app.get("/students/{student_id}/messages", response_model=list[schemas.MessageRead])
+def list_student_messages(
+    student_id: int,
+    limit: int = 80,
+    db: Session = Depends(get_db),
+    current_user: models.User = Depends(get_current_user),
+):
+    ensure_student_access(current_user, student_id)
+    student = db.query(models.Student).filter_by(id=student_id).first()
+    if not student:
+        raise HTTPException(status_code=404, detail="Eleve introuvable")
+
+    safe_limit = min(max(limit, 1), 200)
+    rows = (
+        db.query(models.Message)
+        .filter_by(student_id=student_id)
+        .order_by(models.Message.created_at.desc(), models.Message.id.desc())
+        .limit(safe_limit)
+        .all()
+    )
+    return list(reversed(rows))
+
+
 @app.post("/session/start", response_model=schemas.ChatResponse)
 def start_session(
     student_id: int,
@@ -300,6 +323,13 @@ def answer_assessment(
     correct, feedback, mastery_score = evaluate_answer(
         db, payload.student_id, payload.skill_code, payload.answer
     )
+    db.add(
+        models.Message(
+            student_id=student.id,
+            role="user",
+            content=f"Reponse au mini-test ({payload.skill_code}): {payload.answer}",
+        )
+    )
     db.add(models.Message(student_id=student.id, role="assistant", content=feedback))
     db.commit()
     return schemas.AssessmentAnswerResponse(