use std::fs::File;
use std::io::{self, BufRead};
use std::path::Path;
use regex::Regex;

fn main() {
	if let Ok(lines) = read_lines("./input") {
		for line in lines {
			if let Ok(text) = line {
				Game g = parse_game(text);
			} else {
				println!("Error on line \"{:?}\"", line);
			}
		}
	}
}

struct Bag {
	red: u32,
	green: u32,
	blue: u32,
}

struct Set {
	red: u32,
	green: u32,
	blue: u32,
}

struct Game {
	ID: u32,
	Vec<Set>,
}

fn parse_game(text: &String) -> Result<Game> {
	let re = Regex::new(r"^Game ([0-9]+)(?:(?:(?::|;) )((?:[0-9]+ (?:red|blue|green)(?:, )?)+))+$").unwrap();
	// TODO: Extract all captures. The second capture group only returns the last of the match.
}

fn read_lines<P>(filename: P) -> io::Result<io::Lines<io::BufReader<File>>>
where P: AsRef<Path>, {
    let file = File::open(filename)?;
    Ok(io::BufReader::new(file).lines())
}