use ratatui::{
    buffer::Buffer,
    layout::Rect,
    style::Stylize,
    symbols::border,
    text::{Line, Text},
    widgets::{Block, Paragraph, Widget},
};

use crate::binary_repr::BinaryRepr;

#[derive(Debug, Default)]
pub struct Hexadecimal {
    repr: BinaryRepr,
}

impl Hexadecimal {
    pub fn update(&mut self, input: &BinaryRepr) {
        self.repr = input.clone();
    }
}

impl Widget for &Hexadecimal {
    fn render(self, area: Rect, buf: &mut Buffer) {
        let mut out = Line::from("0x".to_owned().gray());
        let binding = self.repr.to_hex();
        let mut txt = binding.as_str();
        let mut color = false;
        for _ in 0..txt.len().div_ceil(2) {
            if color {
                out += txt[0..2.min(txt.len())].cyan();
            } else {
                out += txt[0..2.min(txt.len())].red();
            }
            txt = &txt[2.min(txt.len())..];
            color = !color;
        }

        let input_block = Block::bordered()
            .title(Line::from("hexadecimal".bold()))
            .border_set(border::PLAIN);

        Paragraph::new(out).block(input_block).render(area, buf);
    }
}