use crate::*;

impl<'a> ArrangerView<'a> {
    /// Render track headers
    pub(crate) fn tracks (&'a self) -> impl Content<TuiOut> + 'a {
        let Self { width_side, width_mid, track_count, track_selected, is_editing, .. } = self;
        Tryptich::center(3)
            .left(*width_side,  button_3("t", "track", format!("{}", *track_count), *is_editing))
            .right(*width_side, button_2("T", "add track", *is_editing))
            .middle(*width_mid, per_track(*width_mid, ||self.tracks_with_sizes_scrolled(),
                |index, track|wrap(
                    if *track_selected == Some(index) {
                        track.color.light
                    } else {
                        track.color.base
                    }.rgb,
                    track.color.lightest.rgb,
                    Tui::bold(true, Fill::x(Align::nw(&track.name)))
                )))
    }
    /// Render scenes with clips
    pub(crate) fn scenes (&'a self) -> impl Content<TuiOut> + 'a {

        let Self {
            width, width_side, width_mid,
            scenes_height, scene_last, scene_selected,
            track_selected, is_editing, app: Tek { editor, .. }, ..
        } = self;

        Tryptich::center(*scenes_height)
            .left(*width_side, Map::new(||self.scenes_with_scene_colors(),
                move|(index, scene, y1, y2, previous): SceneWithColor, _|{
                    let name       = Some(scene.name.clone());
                    let color      = scene.color;
                    let prev_color = previous;
                    let is_last    = *scene_last == index;
                    let selected   = *scene_selected;
                    let same_track = true;
                    let scene      = index;
                    let height     = (1 + y2 - y1) as u16;
                    Fill::x(map_south(y1 as u16, (1 + y2 - y1) as u16, Fixed::y(height, Phat {
                        width:   0,
                        height:  0,
                        content: Fill::x(Align::w(Tui::bold(true, Bsp::e(" ⯈ ", name)))),
                        colors:  Tek::colors(
                            &color,
                            prev_color,
                            same_track && *scene_selected == Some(index),
                            same_track && index > 0 && *scene_selected == Some(index - 1),
                            *scene_last == index
                        )
                    })))
                }))
            .middle(*width_mid, per_track(*width_mid, ||self.tracks_with_sizes_scrolled(),
                move|track_index, track|Map::new(||self.scenes_with_track_colors(),
                    move|(scene_index, scene, y1, y2, prev_scene): SceneWithColor<'a>, _|{
                        let (name, _fg, bg) = if let Some(clip) = &scene.clips[track_index] {
                            let clip = clip.read().unwrap();
                            (Some(clip.name.clone()), clip.color.lightest.rgb, clip.color)
                        } else {
                            (None, Tui::g(96), ItemPalette::G[32])
                        };
                        let same_track = *track_selected == Some(track_index);
                        let height = (1 + y2 - y1) as u16;
                        map_south(y1 as u16, height, Bsp::b(Fixed::y(height, Phat {
                            width:   0,
                            height:  0,
                            content: Fill::x(Align::w(Tui::bold(true, Bsp::e(" ⏹ ", name)))),
                            colors:  Tek::colors(
                                &bg,
                                None,
                                same_track && *scene_selected == Some(scene_index),
                                same_track && scene_index > 0 && *scene_selected == Some(scene_index - 1),
                                *scene_last == scene_index
                            )
                        }), When(
                            *is_editing && same_track && *scene_selected == Some(scene_index),
                            editor
                        )))
                    })))
    }
}