use crate::{normalized_message, MessageChecker, Severity};

use std::marker::PhantomData;

struct BadWordsChecker<T> {

    blacklist: Vec<String>,

    whitelist: Vec<String>,

    player_id_type: PhantomData<T>,

}

impl<T> BadWordsChecker<T> {

    pub fn new(blacklist: &[&str], whitelist: &[&str]) -> Self {

        Self {

            blacklist: blacklist.iter().map(|s| normalized_message(*s)).collect(),

            whitelist: whitelist.iter().map(|s| normalized_message(*s)).collect(),

            player_id_type: PhantomData,

        }

    }

}

impl<T> MessageChecker<T> for BadWordsChecker<T> {

    fn check(&self, player_id: T, message: &str) -> Severity {

        let msg = normalized_message(message);

        // silly implementation, allows bad messages with a single good word

        for badword in &self.blacklist {

            if msg.contains(badword) {

                if !self.whitelist.iter().any(|goodword| msg.contains(goodword)) {

                    return Severity::Warn;

                }

            }

        }

        Severity::Pass

    }

}

#[cfg(test)]

mod tests {

    use super::*;

    #[test]

    fn it_works() {

        let checker = BadWordsChecker::new(&["fsck", "poop"], &["fsck -y"]);

        assert_eq!(checker.check(0, "group hug"), Severity::Pass);

        assert_eq!(checker.check(0, "fpoopf"), Severity::Warn);

        assert_eq!(checker.check(0, "PooP"), Severity::Warn);

        // this one fails

        //assert_eq!(checker.check(0, "poop 'fsck -y' poop"), Severity::Warn);

        // ideally this one shouldn't fail

        // assert_eq!(checker.check(0, "P00P"), Severity::Warn);

    }

}