#!/usr/bin/env python3
"""
Checks if a website is up by sending a HEAD request to it.
"""
import requests

from module import commands, require_chanmsg

@require_chanmsg(message="It's not polite to whisper.")
@commands('isup')
def isup(bot, trigger):
	"""Queries the given url to check if it's up or not."""
	url = trigger.group(2)

	if not url:
		return bot.reply("What URL do you want to check?")
	if url.startswith("192") and not trigger.owner:
		return bot.reply("Do not violate the LAN.")

	if not url.startswith("http"):
		url = "http://" + url

	try:
		res = requests.head(url, timeout=10, verify=True)
	except (requests.exceptions.MissingSchema,
			requests.exceptions.InvalidSchema):
		return bot.msg("Missing or invalid schema. Check the URL.")

	except requests.exceptions.ConnectionError:
		return bot.msg("Connection error. Are you sure this is a real website?")

	except requests.exceptions.InvalidURL:
		return bot.msg("Invalid URL.")

	except Exception as e:
		print(e)
		return bot.msg("Listen buddy. I don't know what you're doing, but " + \
			"you're not doing it right.")

	try:
		res.raise_for_status()
		return bot.msg(url + " appears to be working from here.")
	except requests.exceptions.HTTPError:
		return bot.msg(url + " looks down from here.")