use crate::tasks::day05::IntCodeComputer;
use itertools::Itertools;

#[allow(dead_code)]
pub fn run() {
    let prog_code: Vec<_> = std::fs::read_to_string("input/day07.txt")
        .unwrap()
        .split(",")
        .map(|s| s.parse::<i32>().unwrap())
        .collect();
    task1(prog_code.clone());
}

fn task1(input: Vec<i32>) {
    let phases = vec![0, 1, 2, 3, 4];
    let result = phases
        .iter()
        .permutations(phases.len())
        .map(|perm| {
            perm.iter().fold(0, |signal, phase| {
                let mut computer = IntCodeComputer::new(vec![**phase, signal], input.clone());
                computer.run_until_end();
                *computer.get_output().last().unwrap()
            })
        })
        .max();
    println!("Task 1: best signal is {}", result.unwrap());
}