# -*- coding: utf-8 -*-
import traceback
from datetime import datetime, timedelta

from django.core.cache import cache
from django.core.mail import mail_admins
from django.conf import settings

from .models import License
from . import consts


DEBUG = getattr(settings, 'DEBUG', False)


cache_duration = 3600


def license_check_soon_ends(request):
    try:
        license_cookie = request.COOKIES.get('close_message_license')
        license_15days = cache.get('license_15_%s' % (request.user.username,), None)
        days_left = cache.get('days_left_%s' % (request.user.username,), None)
        cur_license = cache.get('cur_license_%s' % (request.user.username,), None)

        now_ = datetime.today()

        if not days_left or not cur_license:
            cur_license = License.objects.filter(
                company=request.user.profile,
                date_from__lte=now_,
                date_to__gte=now_,
                status__in=[consts.LICENSE_TEST_PERIOD, consts.LICENSE_PAID, consts.LICENSE_ACTIVE],
                deleted=False
            )
            if cur_license:
                cur_license = cur_license[0]

            days_left = (cur_license.date_to - now_.date()).days

            cache.set('days_left_%s' % (request.user.username,), days_left, cache_duration)
            cache.set('cur_license_%s' % (request.user.username,), cur_license, cache_duration)

        if not license_cookie:
            if license_15days is None:
                licenses_ends = License.objects.filter(
                    company=request.user.profile,
                    date_to__lte = now_ + timedelta(days=consts.LICENSE_LEFT_DAYS),
                    status__in=[consts.LICENSE_TEST_PERIOD, consts.LICENSE_PAID, consts.LICENSE_ACTIVE],
                    deleted=False
                )

                next_licenses = License.objects.filter(company=request.user.profile, status=consts.LICENSE_PAID, deleted=False)

                if licenses_ends and not next_licenses:
                    days_to_end = licenses_ends[0].date_to
                    cache.set('license_15_%s' % (request.user.username,), days_to_end, cache_duration)
                    license_15days = days_to_end
                else:
                    license_15days = ''

        return {
            'license_15days': license_15days,
            'license_days': days_left,
            'cur_license': cur_license,
        }
    except Exception as e:
        if DEBUG:
            raise e
        else:
            mail_admins(subject=u'customer: license_check_soon_ends error',
                message=u'Profile id=%s.\n\n%s' % (request.user.profile.pk, traceback.format_exc(e))
            )
        #
        return { }