use std::fs::File;
use std::io::{BufRead, BufReader};

fn main() {
    // let filename = "../2/input_example.txt";
    let filename = "../2/input.txt";
    let file = BufReader::new(File::open(filename).expect("Unable to open file"));

    let mut ranges: Vec<Vec<u8>> = Vec::new();
    let mut bad_id: Vec<u64> = Vec::new();

    for line in file.lines() {
        let wline: String = line.unwrap();
        let sranges: Vec<&str> = wline.split(',').collect();

        for s in sranges {
            let range: Vec<u64> = s.split('-').map(|x| x.parse().unwrap()).collect();
            for id in range[0]..range[1] + 1 {
                let s = id.to_string().into_bytes();
                ranges.push(s);
            }
        }
    }
    println!("number of ranges to inspect {:?}", ranges.len());

    for product_id in ranges {
        for pivot in 1..(product_id.len() / 2) + 1 {
            let mut bad: bool = true;
            let mut complete = 0;
            for cursor in 0..product_id.len() {
                complete = (cursor + 1) % pivot;
                if product_id[cursor % pivot] != product_id[cursor] {
                    bad = false;
                    break;
                }
            }
            if bad && complete == 0 {
                let num = str::from_utf8(&product_id).unwrap();
                bad_id.push(num.parse().unwrap())
            }
        }
    }
    println!("bad ids {:?}", bad_id.len());
    bad_id.sort();
    bad_id.dedup();
    println!("dedup bad ids {:?}", bad_id.len());
    let sum: u64 = bad_id.iter().sum();

    println!("{}", sum)
}