use anyhow::Result;
use tracing::info;

use crate::{clients::Client, dj::algorithms::Algorithm};

pub(crate) mod algorithms;

pub(crate) struct Dj<A: Algorithm> {
    algo: A,
}

impl<A: Algorithm> Dj<A> {
    pub(crate) fn new(algo: A) -> Self {
        Self { algo }
    }

    /// Add the next track to the playlist.
    ///
    /// This should be called after the previous track is finished, to avoid unbounded growth.
    pub(crate) async fn add_track(&mut self, client: &mut Client) -> Result<()> {
        let next = self.algo.next_track(client).await?;

        info!("Adding `{next}`, due to active dj mode");
        client.add(&next).await?;

        Ok(())
    }
}