/// cleans the version number and the stuff in parans from a useragent, additionally makes it lowercause
/// eg: `FooBot/99.0 (contact: foolium@foocorp.co)` -> `foobot`
pub fn clean_useragent(useragent: &str) -> String {
    let mut s = useragent.trim().to_string();

    if let Some(pos) = s.find('(') {
        s.truncate(pos);
    }

    if let Some(pos) = s.find('/') {
        s.truncate(pos);
    }

    let s = s.to_lowercase().trim().to_string();

    return s;
}

#[cfg(test)]
mod tests {
    #[test]
    fn clean_useragent_with_parans() {
        assert_eq!(
            super::clean_useragent("FooBot (contact: foolium@foocorp.co)"),
            "foobot"
        )
    }

    #[test]
    fn clean_useragent_with_forward_slash() {
        assert_eq!(super::clean_useragent("FooBot/99.0"), "foobot")
    }

    #[test]
    fn clean_useragent_with_all() {
        assert_eq!(
            super::clean_useragent("FooBot/99.0 (contact: foolium@foocorp.co)"),
            "foobot"
        )
    }
}