use crate::*;
pub struct ClipSelected {
    pub(crate) title: &'static str,
    pub(crate) name:  Arc<str>,
    pub(crate) color: ItemPalette,
    pub(crate) time:  Arc<str>,
}
content!(TuiOut: |self: ClipSelected|FieldV(
    self.color,
    self.title,
    format!("{} {}", self.time, self.name)
));
impl ClipSelected {
    /// Shows currently playing clip with beats elapsed
    pub fn play_clip <T: HasPlayClip + HasClock> (state: &T) -> Self {
        let (name, color) = if let Some((_, Some(clip))) = state.play_clip() {
            let MidiClip { ref name, color, .. } = *clip.read().unwrap();
            (name.clone().into(), color)
        } else {
            ("".to_string().into(), TuiTheme::g(64).into())
        };
        Self {
            title: "Now",
            name,
            color,
            time: state.pulses_since_start_looped()
                .map(|(times, time)|format!("{:>3}x {:>}",
                    times+1.0,
                    state.clock().timebase.format_beats_1(time)))
                .unwrap_or_else(||String::from("        ")).into()
        }
    }
    /// Shows next clip with beats remaining until switchover
    pub fn next_clip <T: HasPlayClip> (state: &T) -> Self {
        let mut time: Arc<str> = String::from("--.-.--").into();
        let mut name: Arc<str> = String::from("").into();
        let mut color = ItemPalette::from(TuiTheme::g(64));
        if let Some((t, Some(clip))) = state.next_clip() {
            let clip = clip.read().unwrap();
            name  = clip.name.clone();
            color = clip.color.clone();
            time  = {
                let target  = t.pulse.get();
                let current = state.clock().playhead.pulse.get();
                if target > current {
                    let remaining = target - current;
                    format!("-{:>}", state.clock().timebase.format_beats_1(remaining))
                } else {
                    String::new()
                }
            }.into()
        } else if let Some((t, Some(clip))) = state.play_clip() {
            let clip = clip.read().unwrap();
            if clip.looped {
                name  = clip.name.clone();
                color = clip.color.clone();
                let target  = t.pulse.get() + clip.length as f64;
                let current = state.clock().playhead.pulse.get();
                if target > current {
                    time = format!("-{:>}", state.clock().timebase.format_beats_0(
                        target - current
                    )).into()
                }
            } else {
                name  = "Stop".to_string().into();
            }
        };
        Self { title: "Next", time, name, color, }
    }
}