use crate::core::*;

const LOZENGE: [[&'static str;3];3] = [
    ["╭", "─", "╮"],
    ["│", " ", "│"],
    ["╰", "─", "╯"],
];

pub fn lozenge_left (buf: &mut Buffer, x: u16, y1: u16, h: u16, style: Option<Style>) {
    let y2 = y1 + h;
    let y3 = y2.saturating_sub(1);
    for y in y1..y2 {
        if y == y1 {
            LOZENGE[0][0]
        } else if y == y3 {
            LOZENGE[2][0]
        } else {
            LOZENGE[1][0]
        }.blit(buf, x, y, style)
    }
}

pub fn lozenge_right (buf: &mut Buffer, x: u16, y1: u16, h: u16, style: Option<Style>) {
    let y2 = y1 + h;
    let y3 = y2.saturating_sub(1);
    for y in y1..y2 {
        if y == y1 {
            LOZENGE[0][2]
        } else if y == y3 {
            LOZENGE[2][2]
        } else {
            LOZENGE[1][2]
        }.blit(buf, x, y, style)
    }
}