use anyhow::anyhow;
use std::env::args;
use std::fs;
use std::fs::File;
use std::io::Write;
use std::process::exit;
use vis::render::svg_renderer::SvgRender;
use vis::render::Renderer;

fn main() -> anyhow::Result<()> {
    let args: Vec<String> = args().collect();
    if args.len() != 2 {
        eprintln!("Usage: vis vis-file");
        exit(-64);
    } else {
        let vis_file = read_file(&args[1])?;
        let vis = vis::parse::parse_vis(vis_file.as_str())?;
        // println!("{:?}", vis);
        let svg_bytes = SvgRender {}.render(vis)?;
        let mut file = File::create("bank.svg").expect("Unable to create file");
        file.write_all(&svg_bytes).expect("Unable to write data");
    }

    Ok(())
}

fn read_file(file_name: &str) -> anyhow::Result<String> {
    fs::read_to_string(file_name).map_err(|e| anyhow!("Cannot read file '{}': {}", file_name, e))
}