libaoc 0.1.55

Advent of Code CLI
Documentation 
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use std::{env, fs, path::PathBuf, process};

use anyhow::{ensure, Result};
use clap::{value_parser, Parser, Subcommand};
use tracing::error;

use libaoc::{Client, PuzzleId};

#[derive(Parser)]
#[command(version, author, propagate_version = true)]
struct Args {
    #[arg(long, short)]
    pub verbose: bool,
    #[command(subcommand)]
    command: Command,
}

#[derive(clap::Args)]
struct YearDay {
    #[arg(long, short, value_parser = value_parser!(u16).range(2015..=2024))]
    year: Option<u16>,
    #[arg(long, short, value_parser = value_parser!(u8).range(1..=25))]
    day: Option<u8>,
}

#[derive(Subcommand)]
enum Command {
    Get {
        #[command(flatten)]
        yd: YearDay,
        /// The output directory, default: `.`
        output: Option<PathBuf>,
        /// Build the directories `./year/day/`
        #[arg(long, short)]
        build: bool,
    },
    Submit {
        #[command(flatten)]
        yd: YearDay,
        #[arg(long, short, value_parser = value_parser!(u8).range(1..=2))]
        part: Option<u8>,
        answer: String,
    },
    View {
        #[command(flatten)]
        yd: YearDay,
        /// Wether to show the answers for each part.
        #[arg(long, short)]
        answers: bool,
    },
}

fn main() -> Result<()> {
    let args = Args::parse();
    setup_logging(args.verbose)?;

    let client = Client::new()?;
    let cwd = env::current_dir()?;

    match args.command {
        Command::Get { yd, output, build } => {
            let id = puzzle_id(yd.year, yd.day)?;
            let puzzle = client.get_puzzle(&id)?;
            let input = client.get_input(&id)?;

            let dest = if build {
                let mut path = format!("{}/d", id.0);
                if id.1 < 10 {
                    path.push('0');
                }
                path.push_str(&id.1.to_string());
                PathBuf::from(path)
            } else {
                output.unwrap_or(cwd)
            };
            fs::create_dir_all(&dest)?;
            fs::write(dest.join("puzzle.md"), puzzle.view(true))?;
            fs::write(dest.join("input"), &input)?;
        }

        Command::Submit { answer, yd, part } => {
            let id = puzzle_id(yd.year, yd.day)?;
            if let Some(puzzle) = client.submit(&id, part, &answer)? {
                puzzle.write_view(cwd.join("puzzle.md"))?;
            }
        }

        Command::View { yd, answers } => {
            let id = puzzle_id(yd.year, yd.day)?;
            let puzzle = client.get_puzzle(&id)?;
            println!("{}", puzzle.view(answers));
        }
    }

    Ok(())
}

fn puzzle_id(year: Option<u16>, day: Option<u8>) -> Result<PuzzleId> {
    validate_puzzle_id(match (year, day) {
        (Some(y), Some(d)) => (y, d),
        // (Some(y), None) => {}
        // (None, Some(d)) => {}
        _ => find_current_puzzle_id().unwrap_or_else(|| {
            error!("Could not determine puzzle from current directory");
            process::exit(1);
        }),
    })
}

fn validate_puzzle_id((year, day): PuzzleId) -> Result<PuzzleId> {
    ensure!((2015..=2024).contains(&year), "Invalid year: {year}");
    ensure!((1..=25).contains(&day), "Invalid day: {day}");
    Ok((year, day))
}

fn find_current_puzzle_id() -> Option<PuzzleId> {
    libaoc::puzzle_id_from_path(env::current_dir().unwrap())
}

fn setup_logging(verbose: bool) -> Result<()> {
    use tracing::level_filters::LevelFilter;
    use tracing_subscriber::EnvFilter;

    let filter = EnvFilter::builder()
        .with_default_directive(if verbose {
            LevelFilter::DEBUG.into()
        } else {
            LevelFilter::ERROR.into()
        })
        .from_env()?
        .add_directive("hyper::proto=info".parse()?)
        .add_directive("libaoc=debug".parse()?);

    tracing_subscriber::fmt()
        .with_env_filter(filter)
        .without_time()
        .compact()
        .init();

    Ok(())
}