use super::song::{Plan, Song, Verse};

pub struct PlaylistEntry {
    pub song: Song,
    pub plan_name: String,
}

pub struct PlaylistVerseRef {
    pub song_index: usize,
    pub song_map: String,
    pub map_verse_index: usize,
}

pub struct Display {
    pub playlist: Vec<PlaylistEntry>,
    current: PlaylistVerseRef,
    frozen_at: Option<PlaylistVerseRef>,
    pub blanked: bool,
}

impl Display {
    pub fn verse_ref(&self) -> &PlaylistVerseRef {
        self.frozen_at.as_ref().unwrap_or(&self.current)
    }

    pub fn verse(&self) -> Option<&Verse> {
        if self.blanked {
            None
        } else {
        }
    }

    pub fn entry(&self) -> Option<PlaylistEntry> {
        let vref = self.verse_ref();
        self.playlist.get(vref.song_index)
    }

    pub fn plan() -> Plan {}
}