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

use color_eyre::eyre::Result;

mod gpx;
mod layer;
mod renderer;

fn main() -> Result<()> {
    color_eyre::install()?;

    let gpx_folder = env::args().nth(1).unwrap();
    println!("Reading from {gpx_folder}");

    let mut tracks = Vec::new();
    for file in fs::read_dir(gpx_folder).unwrap() {
        let file = file.unwrap();
        let data = gpx::extract_from_file(file.path(), gpx::Compression::None).unwrap();
        tracks.push(data);
    }

    for zoom in 0..=19 {
        println!("Doing level {zoom}");
        let counter = renderer::render_heatcounter(zoom, &tracks);
        let target = ["tiles", &zoom.to_string()].iter().collect::<PathBuf>();
        fs::create_dir(&target)?;
        renderer::lazy_colorization(&counter, &target)?;
    }

    Ok(())
}