//
// spec.rs
// Copyright (C) 2023 Maxime “pep” Buquet <pep@bouah.net>
// Distributed under terms of the GPLv3+ license.
//

use std::env::args;
use std::fs::File;
use std::io::{self, Read};
use std::path::{Path, PathBuf};

use scansion_dsl::parse_spec;

fn main() -> io::Result<()> {
	let args: Vec<String> = args().collect();
	if args.len() != 2 {
		println!("Usage: {} <file-or-dir>", args[0]);
		return Err(io::Error::new(
			io::ErrorKind::Other,
			"Invalid argument count",
		));
	}

	let path = Path::new(&args[1]);
	if !path.exists() {
		return Err(io::Error::new(
			io::ErrorKind::Other,
			"Specified path doesn't exist",
		));
	}
	let files: Vec<PathBuf> = if path.is_file() {
		vec![path.to_path_buf()]
	} else if path.is_dir() {
		path.read_dir()?
			.filter_map(|entry| {
				let p = entry.unwrap().path();
				match p.extension() {
					Some(ext) if ext == "scs" => Some(p),
					_ => None,
				}
			})
			.collect::<Vec<_>>()
	} else {
		return Err(io::Error::new(
			io::ErrorKind::Other,
			"Only files and dirs are supported",
		));
	};

	for path in files {
		let mut file = File::open(path.clone())?;
		let mut contents = String::new();
		file.read_to_string(&mut contents)?;

		print!("Path: {path:?}: ");
		match parse_spec(&contents) {
			Ok(_) => println!("\x1b[32m OK\x1b[0m"),
			Err(err) => println!("\x1b[31mERR\x1b[0m\n{err:?}"),
		}
	}

	Ok(())
}