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use aoc2019::*;
use std::io;
use std::io::prelude::*;
use std::process;
use structopt::StructOpt;
#[derive(Debug, StructOpt)]
#[structopt(name = "Day 17: Set and Forget")]
/// Pilots a vacuum robot around on a scaffold. What could go wrong?
///
/// See https://adventofcode.com/2019/day/17 for details.
struct Opt {
/// Draw the map and exit
#[structopt(short = "d")]
draw_map: bool,
}
fn main() {
let stdin = io::stdin();
let opt = Opt::from_args();
let program: IntcodeProgram = stdin
.lock()
.split(b',')
.map(|x| exit_on_failed_assertion(x, "Error reading input"))
.map(|x| exit_on_failed_assertion(String::from_utf8(x), "Input was not valid UTF-8"))
.map(|x| exit_on_failed_assertion(x.trim().parse::<Intcode>(), "Invalid number"))
.collect::<IntcodeProgram>();
let result = exit_on_failed_assertion(
if opt.draw_map {
program.execute()
} else {
// L,12,L,8,R,10,R,10,L,6,L,4,L,12,L,12,L,8,R,10,R,10,L,6,L,4,L,12,R,10,L,8,L,4,R,10,L,6,L,4,L,12,L,12,L,8,R,10,R,10,R,10,L,8,L,4,R,10,L,6,L,4,L,12,R,10,L,8,L,4,R,10
// | | ||
let input = vec![
"A,B,A,B,C,B,A,C,B,C\n",
"L,12,L,8,R,10,R,10\n",
"L,6,L,4,L,12\n",
"R,10,L,8,L,4,R,10\n",
"y\n",
];
program
.with_mem_0(Intcode::from(2))
.with_input(
input
.iter()
.flat_map(|line| line.chars().map(|c| Intcode::from(c as u8)))
.collect(),
)
.execute()
},
"Program failed",
);
println!(
"{}",
result
.drop_last()
.unwrap()
.iter()
.flat_map(|c| c.to_signed_bytes_be())
.map(|c| c as char)
.collect::<String>()
);
println!("{}", result.last().unwrap());
}
fn exit_on_failed_assertion<A, E: std::error::Error>(data: Result<A, E>, message: &str) -> A {
match data {
Ok(data) => data,
Err(e) => {
eprintln!("{}: {}", message, e);
process::exit(1);
}
}
}
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