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use std::{fs, io};
use std::io::stdout;
use ratatui::{backend::CrosstermBackend, Terminal};
use crossterm::{execute, terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen}};
use crate::{input, render};
pub struct HexEditor {
filename: String,
data: Vec<u8>,
cursor: usize,
terminal: Terminal<CrosstermBackend<std::io::Stdout>>,
}
impl HexEditor {
pub fn new(filename: String, data: Vec<u8>) -> io::Result<Self> {
enable_raw_mode()?;
execute!(stdout(), EnterAlternateScreen)?;
let terminal = Terminal::new(CrosstermBackend::new(stdout()))?;
Ok(Self { filename, data, cursor: 0, terminal })
}
pub fn run(&mut self) -> io::Result<()> {
while input::handle_input(&mut self.cursor, &mut self.data[..])? {
render::draw(&mut self.terminal, &self.data, self.cursor, &self.filename)?;
}
self.cleanup()
}
pub fn cleanup(&mut self) -> io::Result<()> {
disable_raw_mode()?;
execute!(stdout(), LeaveAlternateScreen)?;
fs::write(&self.filename, &self.data)?;
Ok(())
}
}
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