# coding=utf-8
from django.db.models import Q
import datetime
from finance.models import Bill, Price
from courses.models import CourseMap


def system_check_bill(token, user, theme_type='B'):
    if user.is_admin:
        return True

    # Проверка счета, как подписки
    __point = CourseMap.objects.get(token=token)
    course = __point.course
    if user in course.teachers.all():
        return True
    
    prices = Price.objects.filter(included=__point).values_list('id', flat=True)
    for b in Bill.objects.filter(service__id__in=prices, user=user, status='F'):
        if b:
            if b.service.by_time:
                if b.finish_date + datetime.timedelta(days=b.service.by_time) > datetime.datetime.now():
                    return True
                else:
                    return False
            else:
                return True

    m_type = []
    if theme_type == 'B' or theme_type == 'M':
        m_type = ['B', 'E', 'P']

    elif theme_type == 'E':
        m_type = ['E', 'P']

    elif theme_type == 'P':
        m_type = ['P']

    if m_type:
        bill = Bill.objects.filter(service__included=None, service__course=course, user=user, status='F', service__m_type__in=m_type)
        if bill.exists():
            check = []
            for b in bill:
                if b.service.by_time:
                    check.append(b)
            if not check:
                return True

            else:
                result = False
                for b in check:
                    if b.finish_date + datetime.timedelta(days=b.service.by_time) > datetime.datetime.now():
                        result = True
                if result:
                    return True
        else:
            return False
    return False