use std::{
	io,
	io::Write
};

use termion::{
	terminal_size,

	clear,
	color::{ Fg, Rgb },
	cursor,
	input::TermRead,
	raw::IntoRawMode,
	style
};

use crate::flag::BLOCK;

pub fn draw(colors: &[Fg<Rgb>]) {
	let mut stdout = io::stdout().into_raw_mode().unwrap();
	let stdin = io::stdin();

	let count = colors.len();
	let (width, height) = terminal_size().unwrap();
	let thresh = height as usize / count;

	write!(stdout, "{}{}", cursor::Hide, clear::All).ok();
	stdout.flush().ok();

	let stripe = BLOCK.repeat(width as usize);
	let reset = style::Reset;

	let mut index = 0;
	for n in 0..(height as usize) {
		if n != 0 && n % thresh == 0 {
			index += 1;
			if index >= count { break; }
		}
		write!(
			stdout,
			"{color}{stripe}{reset}",
			color = colors[index]
		).ok();
	}
	stdout.flush().ok();

	for _ in stdin.keys() { break; }
	write!(stdout, "{}{}", cursor::Show, clear::All).ok();
	stdout.flush().ok();
}