use std::fs::read_to_string;
use chrono::Datelike;
use clap::{App, Arg};
use crate::day01::Day01;
use crate::day02::Day02;
use crate::day03::Day03;
use crate::day04::Day04;
use crate::day05::Day05;
use crate::day06::Day06;
use crate::day07::Day07;
use crate::day::Day;

mod day;
mod day01;
mod day02;
mod day03;
mod day04;
mod day05;
mod day06;
mod day07;

fn load_input(day: &str) -> String {
    read_to_string(format!("./input/day{}", day)).expect("Could not load input")
}

fn run_day(days: &[Box<dyn Day>], day: usize) {
    if let Some(d) = days.get(day - 1) {
        let day_code = d;
        println!("Running day {}!", day);
        println!("\tPart 1: {}", d.part1());
        println!("\tPart 2: {}", day_code.part2());
    } else {
        eprintln!("Day {} is not available!", day);
    }
}

fn main() {
    let matches = App::new("AOC Time!")
        .version("1.0")
        .author("J00LZ")
        .about("How to overengineer AOC in a single program...")
        .arg(Arg::with_name("v")
            .short("v")
            .multiple(true)
            .help("Sets the level of verbosity"))
        .arg(Arg::with_name("all")
            .short("a")
            .long("all")
            .help("run all available days"))
        .arg(Arg::with_name("DAY")
            .takes_value(true)
            .multiple(true))
        .get_matches();

    let days: Vec<Box<dyn Day>> = vec![Box::new(Day01::init(load_input("01"))),
                                       Box::new(Day02::init(load_input("02"))),
                                       Box::new(Day03::init(load_input("03"))),
                                       Box::new(Day04::init(load_input("04"))),
                                       Box::new(Day05::init(load_input("05"))),
                                       Box::new(Day06::init(load_input("06"))),
                                       Box::new(Day07::init(load_input("07")))];

    let _verbosity = matches.occurrences_of("v");
    if matches.is_present("all") {
        let l = days.len();
        println!("running {} days!", l);
        for v in 1..=l {
            run_day(&days, v);
        }
    } else if let Some(d) = matches.values_of("DAY") {
        let d = d.map(|x| x.parse::<usize>().expect("Did not provide an int!"));
        for v in d {
            run_day(&days, v);
        }
    } else {
        let v = chrono::Local::now();
        if v.month() != 12 {
            println!("This was really only meant to be used in december...");
        }
        run_day(&days, v.day() as usize);
    }
}