#!/usr/bin/env python3
from argparse import ArgumentParser
from datetime import datetime
from os.path import exists
from platform import system
from subprocess import call
from time import sleep
from tools.tools import human_readable_time_from_delta
import webbrowser


YEAR = 2016
CHARMS = {
    'Linux': '/usr/local/bin/charm',
    'Windows': r'C:\Users\pennywise\AppData\Local\JetBrains\Toolbox\scripts\pycharm.cmd'
}

arg_parser = ArgumentParser()
arg_parser.add_argument("-d", "--day", help="start a specific day (default: today)", type=int)
args = arg_parser.parse_args()

DAY = args.day or datetime.now().day

if YEAR < 2015 or not 1 <= DAY <= 25:
    print("Invalid year or day for year: %d, day: %d" % (YEAR, DAY))
    exit()

day_file = "day%02d.py" % DAY
if exists(day_file):
    print(day_file, "already exists. Use that one!")
    exit()

start = datetime(YEAR, 12, DAY, 6, 0, 0)
now = datetime.now()
if start > now:
    time_wait = start - now
    if time_wait.days > 0:
        print("Do you really want to wait %d days?" % time_wait.days)
        exit()

    while time_wait.seconds > 0:
        print("Day %d starts in %s.\r" % (DAY, human_readable_time_from_delta(time_wait)))
        if time_wait.seconds > 70:
            wait = min(1, time_wait.seconds // 3600) * 3600 + min(1, time_wait.seconds // 60) * 60
            sleep(wait)
        else:
            sleep(1)
        time_wait = start - datetime.now()


with open("skel_day.py", "r") as IN:
    with open(day_file, "w") as OUT:
        while in_line := IN.readline():
            OUT.write(in_line.replace("%YEAR%", str(YEAR)).replace("%DAY%", str(DAY)))

call(["git", "add", day_file])
webbrowser.open("https://adventofcode.com/%d/day/%d" % (YEAR, DAY))
call([CHARMS[system()], day_file])