import datetime as datetime
import logging

from notfellchen import settings
import requests


def pluralize(number, letter="e"):
    try:
        size = len(number)
    except TypeError:
        size = int(number)
    return '' if size == 1 else letter


def age_as_hr_string(age: datetime.timedelta) -> str:
    days = age.days
    weeks = age.days / 7
    months = age.days / 30
    years = age.days / 365
    if years >= 1:
        months = months - 12 * years
        return f'{years:.0f} Jahr{pluralize(years)} und {months:.0f} Monat{pluralize(months)}'
    elif months >= 3:
        return f'{months:.0f} Monat{pluralize(months)}'
    elif weeks >= 3:
        return f'{weeks:.0f} Woche{pluralize(weeks, "n")}'
    else:
        return f'{days:.0f} Tag{pluralize(days)}'


def healthcheck_ok():
    try:
        requests.get(settings.HEALTHCHECKS_URL, timeout=10)
    except requests.RequestException as e:
        logging.error("Ping to healthcheck-server failed: %s" % e)


def is_404(url):
    try:
        result = requests.get(url, timeout=10)
        return result.status_code == 404
    except requests.RequestException as e:
        logging.warning(f"Request to {url} failed: {e}")