use shared::intcode::{IntCode, CELL};

fn run(mut ic: IntCode, first: CELL, second: CELL) -> CELL {
	ic.data[1] = first;
	ic.data[2] = second;
	ic.simulate();
	ic.data[0]
}

fn main() {
	let ic = include_str!("input.txt").parse::<IntCode>().unwrap();
	println!("Run 1: {}", run(ic.clone(), 12, 2));
	for limit in 0.. {
		for fst in 0..limit {
			let result = run(ic.clone(), fst, limit);
			if result == 19690720 {
				println!("Found parameters: {}", 100*fst + limit);
				return;
			}
		}
		if limit > 0 {
			for snd in 0..limit-1 {
				let result = run(ic.clone(), limit, snd);
				if result == 19690720 {
					println!("Found parameters: {}", 100*limit + snd);
					return;
				}
			}
		}
	}
}

#[cfg(test)]
mod day2test {
	use super::*;

	fn parse(input: &str) -> IntCode {
		input.parse().unwrap()
	}

	fn run(input: &str) -> IntCode {
		let mut ic = parse(input);
		ic.simulate_step().expect_finished();
		ic
	}

	#[test]
	fn examples1() {
		assert_eq!(run("1,9,10,3,2,3,11,0,99,30,40,50").data, parse("3500,9,10,70,2,3,11,0,99,30,40,50").data);
		assert_eq!(run("1,0,0,0,99").data, parse("2,0,0,0,99").data);
		assert_eq!(run("2,3,0,3,99").data, parse("2,3,0,6,99").data);
		assert_eq!(run("2,4,4,5,99,0").data, parse("2,4,4,5,99,9801").data);
		assert_eq!(run("1,1,1,4,99,5,6,0,99").data, parse("30,1,1,4,2,5,6,0,99").data);
	}

	#[test]
	fn examples2() {
		// no examples present
	}
}