async fn submissions_facet(
conn: &mut PgConnection,
user_id: Uuid,
course_id: Uuid,
exercise_id: Option<Uuid>,
course_exercises: &[Exercise],
) -> ChatbotResult<SubmissionsFacet>async fn submissions_facet(
conn: &mut PgConnection,
user_id: Uuid,
course_id: Uuid,
exercise_id: Option<Uuid>,
course_exercises: &[Exercise],
) -> ChatbotResult<SubmissionsFacet>