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use std::io;
use aoc::grid::{Direction, Grid};
use std::collections::HashSet;
fn main() -> io::Result<()> {
let grid: Vec<Vec<char>> = io::stdin()
.lines()
.map(|line| line.unwrap().chars().collect())
.collect();
let grid = Grid::new(grid);
let start = grid
.enumerate()
.filter(|(_, c)| **c == '^')
.next()
.unwrap()
.0;
let silver: usize = silver(&grid, start);
let gold: usize = gold(&grid);
println!("silver: {silver}");
println!("gold: {gold}");
return Ok(());
}
fn silver(grid: &Grid<char>, start: (usize, usize)) -> usize {
let mut pos = start;
let mut dir = Direction { x: 0, y: -1 };
let mut seen = HashSet::<(usize, usize)>::new();
loop {
seen.insert(pos);
match grid.move_pos(pos, dir, 1).and_then(|p| grid.at(p)) {
Some(&'#') => dir = dir.cw(),
Some(_) => pos = grid.move_pos(pos, dir, 1).unwrap(),
None => break seen.len(),
}
}
}
fn gold(grid: &Grid<char>) -> usize {
0
}
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