mod dithering;
mod escpos;

use image::{ImageError, ImageReader};
use std::{env, fs, io, io::Write, process};

fn main() {
    let args: Vec<String> = env::args().collect();

    let len = args.len();
    if len < 2 || len > 2 {
        println!("Please provide a path to the image.");
        process::exit(1);
    }

    let img = ImageReader::open(&args[1])
        .map_err(|err| ImageError::IoError(err))
        .and_then(|v| v.decode())
        .unwrap();

    let mut escpos = escpos::escpos_raster(&img, Some(escpos::ImageOrientation::Largest), Some(0));
    for _ in 0..2 {
        escpos.push('\n' as u8);
    }

    io::stdout().write(&escpos).unwrap();
}