Fix CBT history react-markdown crash, fix test deletion cascade, fix cbt theme, add 180 NEET questions

backend/main.py

@@ -628,8 +628,6 @@ def create_manual_test(
         created_by=data.admin_id
     )
     session.add(test_obj)
-    session.commit()
-    session.refresh(test_obj)
 
     # 2. Parse and create questions
     sections_dict = {}
@@ -649,8 +647,6 @@ def create_manual_test(
             created_by=data.admin_id
         )
         session.add(q_obj)
-        session.commit()
-        session.refresh(q_obj)
 
         sec_name = q_data.section
         if sec_name not in sections_dict:
@@ -678,4 +674,69 @@ def toggle_test_status(test_id: UUID, session: Session = Depends(get_session)):
     session.add(test_obj)
     session.commit()
 
-    return {"status": "success", "is_active": test_obj.is_active}
+    return {"status": "success", "is_active": test_obj.is_active}
+
+@app.delete("/api/admin/tests/{test_id}", tags=["Admin"])
+def delete_test(test_id: UUID, session: Session = Depends(get_session)):
+    from sqlmodel import select
+    test_obj = session.get(models.Test, test_id)
+    if not test_obj:
+        raise HTTPException(status_code=404, detail="Test not found")
+        
+    # 1. Identify all question IDs associated with the test
+    question_ids = []
+    if test_obj.sections:
+        for section_name, section_data in test_obj.sections.items():
+            question_ids.extend(section_data.get("questions", []))
+            
+    # Convert question IDs to UUIDs
+    import uuid
+    q_uuids = []
+    for q_id in question_ids:
+        try:
+            q_uuids.append(uuid.UUID(q_id) if isinstance(q_id, str) else q_id)
+        except ValueError:
+            continue
+
+    # 2. Identify all attempts associated with this test
+    attempts_query = select(models.Attempt).where(
+        models.Attempt.source_id == test_id
+    )
+    attempts = session.exec(attempts_query).all()
+    attempt_ids = [att.id for att in attempts]
+
+    # 3. Delete Mistake records referencing these attempts
+    if attempt_ids:
+        mistakes_by_attempt_query = select(models.Mistake).where(
+            models.Mistake.attempt_id.in_(attempt_ids)
+        )
+        mistakes_by_attempt = session.exec(mistakes_by_attempt_query).all()
+        for mistake in mistakes_by_attempt:
+            session.delete(mistake)
+
+    # 4. Delete Mistake records referencing these questions
+    if q_uuids:
+        mistakes_by_q_query = select(models.Mistake).where(
+            models.Mistake.question_id.in_(q_uuids)
+        )
+        mistakes_by_q = session.exec(mistakes_by_q_query).all()
+        for mistake in mistakes_by_q:
+            try:
+                session.delete(mistake)
+            except Exception:
+                pass
+
+    # 5. Delete the Attempt records
+    for att in attempts:
+        session.delete(att)
+
+    # 6. Delete the Question records
+    for q_uuid in q_uuids:
+        q_obj = session.get(models.Question, q_uuid)
+        if q_obj:
+            session.delete(q_obj)
+            
+    # 7. Delete the Test itself
+    session.delete(test_obj)
+    session.commit()
+    return {"status": "success", "message": "Test and all associated questions, attempts, and mistakes deleted successfully"}