pub trait NotFound {
    type Ok;
    fn not_found<E, F>(self, map: F) -> Result<Self::Ok, E>
    where
        E: From<sqlx::Error>,
        F: FnOnce() -> E;
}

impl<T> NotFound for Result<T, sqlx::Error> {
    type Ok = T;

    fn not_found<E, F>(self, map: F) -> Result<T, E>
    where
        E: From<sqlx::Error>,
        F: FnOnce() -> E,
    {
        match self {
            Err(sqlx::Error::RowNotFound) => Err(map()),
            Err(other) => Err(other.into()),
            Ok(value) => Ok(value),
        }
    }
}