from conftest import admin_login, join_student


def test_csv_export_contains_one_row_per_submission(client, sid):
    admin_login(client)
    join_student(client, sid, "s1", "Student One")
    rooms = client.app.state.rooms
    client.portal.call(rooms.open_question, sid, 0, 2)
    ack = client.portal.call(rooms.submit_answer, sid, "s1", 0, "B")
    assert ack["type"] == "submit_ack"
    client.portal.call(rooms.close_question, sid)

    response = client.get("/admin/api/csv")
    lines = response.text.strip().splitlines()
    assert lines[0] == "sid,student_id,name,question_idx,answer,elapsed_ms,score,status,blur_count,hidden_count,duplicate_join_attempts"
    assert len(lines) == 2
    # The CSV stores the canonical 1-indexed position of the chosen
    # option (A=1, B=2, C=3, D=4) rather than the letter — the student
    # UI is letterless and a number is unambiguous for downstream
    # analysis.
    assert ",s1,Student One,0,2," in lines[1]
    # Default audit-event counts are 0 for a clean run (no blur events,
    # no duplicate-join attempts).
    assert lines[1].endswith(",0,0,0")