extern crate clap;
extern crate time;
use clap::{Arg, App, SubCommand};
mod hasher_sha256;
mod hash256;

pub fn main(/*base: usize, */number: usize, diff: String) {
    let matches = create_app().get_matches();
    let base;
    match matches.value_of("base") {
        Some(x) => {base = u64::from(x)}
        None => {panic!()}
    };
    match hash256::verify_product(base, number, diff) {
        Some(x) => { println!("{}", diff); }
        None => { println!("None"); }
    }
}

fn create_app<'a, 'b>() -> App<'a, 'b> {
    App::new("Hash256")
        .version("1.0")
        .author("Lorenz Bung & Joshua Rutschmann")
        .about("Calculates the Hashvalue of the given base, number and difficulty.")
        .arg(Arg::with_name("base")
            .short("b")
            .long("base")
            .value_name("VALUE")
            .help("The base of the hash to be calculated on.")
            .takes_value(true)
            .required(true))
        .arg(Arg::with_name("number")
            .short("n")
            .long("number")
            .value_name("VALUE")
            .help("The number of the hash to be calculated on.")
            .takes_value(true)
            .required(true))
        .arg(Arg::with_name("difficulty")
            .short("d")
            .long("difficulty")
            .value_name("VALUE")
            .help("The difficulty of the calculated hash.")
            .takes_value(true)
            .required(true))
        .subcommand(SubCommand::with_name("timings")
            .about("controls timing features")
            .version("1.0")
            .author("Lorenz Bung & Joshua Rutschmann"))
}