mod opts;

use crate::opts::Options;
use clap::Parser;
use std::path::Path;
use thyme::{data::Mapping, file::ThymeFile, image::Image};

fn main() -> Result<(), Box<dyn std::error::Error>> {
    // read the command-line options
    let opts = Options::parse();

    let image_path = Path::new(&opts.image);

    // load the PNG image for the pattern
    let image = Image::load(image_path)?;
    // load the color map file
    let mapping = Mapping::load(opts.mapping, &image)?;

    let thyme = ThymeFile::from_image_and_config(&image, &mapping);

    let output_filename = match opts.output {
        Some(s) => Path::new(&s).to_path_buf(),
        None => {
            let mut path = image_path.to_path_buf();
            path.set_extension("thyme");
            path
        }
    };

    {
        let mut f = std::fs::File::create(output_filename)?;
        thyme.to_stream(&mut f)?;
    }

    Ok(())
}