use serenity::{
    all::{GuildMemberUpdateEvent, Member, UserId},
    async_trait,
    client::{Context, EventHandler},
};
use sqlx::{Database, Pool};

/// A handler that notices people with an X.500 in their nicknames that matches a student's, and
/// records it in the database.
pub struct X500Mapper<DB: Database>(pub Pool<DB>);

impl<DB: Database> X500Mapper<DB> {
    async fn notice_member(&self, nick: &str, uid: UserId) {
        dbg!((nick, uid));
    }
}

#[async_trait]
impl<DB: Database> EventHandler for X500Mapper<DB> {
    async fn guild_member_update(
        &self,
        _ctx: Context,
        _old_if_available: Option<Member>,
        _new: Option<Member>,
        event: GuildMemberUpdateEvent,
    ) {
        if let Some(nick) = event.nick {
            self.notice_member(&nick, event.user.id).await
        }
    }
}