use std::{fs, io::Write, path::PathBuf};

fn main() {
    // parse args:
    let args: Vec<String> = std::env::args().collect();
    if args.len() != 5 || args[1] != "-i" || args[3] != "-o" {
        eprintln!("Usage: binary_name -i input_path -o output_path");
        std::process::exit(1);
    }
    let input_path = &args[2];
    let output_path = &args[4];

    let src = PathBuf::from(input_path);
    let mut output_file = fs::File::create(output_path).unwrap();

    match assembler::assemble(&src) {
        Ok(res) => {
            res.iter().map(|i| i.encode()).for_each(|i| {
                output_file.write_all(&i.to_le_bytes()).unwrap();
            });
        }
        Err(e) => {
            eprintln!("{}", e);
            std::process::exit(1);
        }
    }
}