use std::{fs::File, path::PathBuf};

use anyhow::Result;
use clap::Parser;

use crate::value_noise::generate_noise;

mod ppm;
mod value_noise;
mod vec2;

#[derive(Parser)]
struct Opt {
    #[clap(short = 'o', long = "out", default_value = "out.ppm")]
    output_path: PathBuf,
}

fn main() -> Result<()> {
    let opt = Opt::parse();

    let rng = rand::thread_rng();

    let width = 256;
    let height = 256;
    let ppm = generate_noise(width, height, rng);

    {
        let file = File::create(opt.output_path)?;
        ppm.write(file)?;
    }

    Ok(())
}