use crate::*;

pub struct OctaveVertical {
    on:     [bool; 12],
    colors: [Color; 3]
}

impl Default for OctaveVertical {
    fn default () -> Self {
        Self {
            on:     [false; 12],
            colors: [Rgb(255,255,255), Rgb(0,0,0), Rgb(255,0,0)]
        }
    }
}

impl OctaveVertical {
    fn color (&self, pitch: usize) -> Color {
        let pitch = pitch % 12;
        self.colors[if self.on[pitch] { 2 } else {
            match pitch { 0 | 2 | 4 | 5 | 6 | 8 | 10 => 0, _ => 1 }
        }]
    }
}

impl Content<TuiOut> for OctaveVertical {
    fn content (&self) -> impl Render<TuiOut> {
        row!(
            Tui::fg_bg(self.color(0),  self.color(1),  "▙"),
            Tui::fg_bg(self.color(2),  self.color(3),  "▙"),
            Tui::fg_bg(self.color(4),  self.color(5),  "▌"),
            Tui::fg_bg(self.color(6),  self.color(7),  "▟"),
            Tui::fg_bg(self.color(8),  self.color(9),  "▟"),
            Tui::fg_bg(self.color(10), self.color(11), "▟"),
        )
    }
}