use std::{
    env::var,
    fs::{
        read,
        write,
    },
    io::Write,
    path::{
        Path,
        PathBuf,
    },
    process::{
        Command,
        Stdio,
    },
};

fn main() {
    println!("test");
    println!("cargo::rerun-if-changed=nvim-treesitter/lua/nvim-treesitter/parsers.lua");
    println!("cargo::rerun-if-changed=generate_parsers.lua");
    let mut child = Command::new("lua")
        .arg("generate_parsers.lua")
        .stdin(Stdio::piped())
        .stdout(Stdio::piped())
        .spawn()
        .expect("Failed to spawn process");

    let mut stdin = child.stdin.take().expect("Failed to open stdin");
    std::thread::spawn(move || {
        stdin
            .write_all(
                read(Path::new("nvim-treesitter/lua/nvim-treesitter/parsers.lua"))
                    .expect("Failed to create parsers path")
                    .as_ref(),
            )
            .expect("Failed to write to stdin");
    })
    .join()
    .unwrap();

    let output = child.wait_with_output().expect("Failed to read stdout");
    write(
        PathBuf::from(format!("{}/_parsers.rs", var("OUT_DIR").unwrap())),
        output.stdout,
    )
    .unwrap();
}