from datetime import datetime, timedelta

from django.core.cache import caches
from django.shortcuts import render


def stats(request):
    stats_data = caches['default'].get('stats')
    status = 503
    current_age = None
    current_age_text = None

    if stats_data:
        status = 200
        current_age_text = age_text(stats_data['last_updated'])

    data = {'stats': stats_data, 'current_age': current_age, 'current_age_text': current_age_text}
    return render(request, 'stats/stats.html', data, status=status)

def user_stats(request):

    stats_data = caches['default'].get('userstats_{}'.format(request.user.id))
    status = 503
    current_age = None
    current_age_text = None

    if stats_data:
        status = 200
        current_age_text = age_text(stats_data['last_updated'])

    data = {'stats': stats_data, 'current_age': current_age, 'current_age_text': current_age_text}
    return render(request, 'stats/user.html', data, status=status)

def age_text(last_updated):
    current_age = datetime.now() - last_updated
    minutes = (current_age.seconds % 3600) / 60
    hours = current_age.seconds / 3600
    minutestr = "minute" if minutes == 1 else "minutes"
    hourstr = "hour" if hours == 1 else "hours"
    if current_age < timedelta(hours=1):
        return 'Stats were updated {:.0f} {} ago.'.format(minutes, minutestr)

    return 'Stats were updated {:.0f} {} and {:.0f} {} ago.'.format(
        hours, hourstr, minutes, minutestr)