bitcache 0.0.1

// This is free and unencumbered software released into the public domain.

use bitcache::{Id, IdEncoding};
use clientele::{
    StandardOptions, SysexitsError,
    crates::clap::{Parser, Subcommand},
};
use std::path::PathBuf;

/// Bitcache is a distributed content-addressable storage (CAS) system.
#[derive(Debug, Parser)]
#[command(name = "Bitcache", long_about)]
#[command(arg_required_else_help = true)]
struct Options {
    #[clap(flatten)]
    flags: StandardOptions,

    #[command(subcommand)]
    command: Option<Command>,
}

#[derive(Debug, Subcommand)]
enum Command {
    /// Initialize a new repository.
    Init {},

    /// Compute the hash of a file.
    #[clap(aliases = ["id", "hash"])]
    Identify {
        /// The format to use for the hash output.
        #[arg(short, long, value_name = "FORMAT", default_value = "hex")]
        format: IdEncoding,

        /// The paths to the file(s) to hash.
        #[arg(value_name = "FILES")]
        paths: Vec<PathBuf>,
    },
}

/// The entry point for the `bitcache` command-line interface.
pub fn main() -> Result<(), SysexitsError> {
    // Load environment variables from `.env`:
    clientele::dotenv().ok();

    // Expand wildcards and @argfiles:
    let args = clientele::args_os()?;

    // Parse command-line options:
    let options = Options::parse_from(args);

    // Print the program version, if requested:
    if options.flags.version {
        println!("{} {}", env!("CARGO_PKG_NAME"), env!("CARGO_PKG_VERSION"));
        return Ok(());
    }

    // Print the program license, if requested:
    if options.flags.license {
        print!("{}", include_str!("../../../UNLICENSE"));
        return Ok(());
    }

    // Configure debug output:
    if options.flags.debug {}

    match options.command.unwrap() {
        Command::Init {} => Ok(()),
        Command::Identify { format, paths } => {
            for path in paths {
                let mut hasher = bitcache_core::Hasher::new();
                let input_file = std::fs::File::open(&path)?;
                hasher.update_reader(input_file)?;
                let id: Id = hasher.finalize().into();
                match format {
                    IdEncoding::Hex => println!("{}", id.to_hex()),
                    #[cfg(feature = "base58")]
                    IdEncoding::Base58 => println!("{}", id.to_base58()),
                }
            }
            Ok(())
        },
    }
}