import json
from datetime import datetime, timedelta

import logging

import os
import requests
from django_celery_beat.models import CrontabSchedule, PeriodicTask
from yandex_money.models import Payment

from finance.models import Invoice
from lms import celery_app
from django.conf import settings


logger_yandex = logging.getLogger('yandex_money')


def setup_periodic_billing(order_number):
    # TODO: настроить периодичность и срок окончания
    # 12:00 первого числа каждого месяца
    schedule, _ = CrontabSchedule.objects.get_or_create(
        minute='0',
        hour='12',
        day_of_week='*',
        day_of_month='1',
        month_of_year='*'
    )
    PeriodicTask.objects.create(
        crontab=schedule,
        name='Periodic billing (order_number={})'.format(order_number),
        task='finance.tasks.periodic_billing',
        kwargs=json.dumps({
            'order_number': order_number
        }),
        expires=datetime.utcnow() + timedelta(days=180)  # в течение полугода
    )


@celery_app.task
def periodic_billing(order_number):
    try:
        sample = Invoice.objects.get(yandex_pay__order_number=order_number)
    except Invoice.DoesNotExist:
        raise ValueError('Номер заказа {} не найден'.format(order_number))

    bill = sample.bill

    invoice = Invoice.objects.create(
        status='P',
        price=sample.price,
        method=sample.method,
        rebilling=True,
        bill=bill
    )

    if invoice.method == 'Y':
        user = bill.user
        yandex_pay = Payment.objects.create(
            invoice_id=sample.yandex_pay.invoice_id,
            order_amount=invoice.price,
            customer_number=user.id,
            user=user,
            cps_email=user.email
        )
        invoice.yandex_pay = yandex_pay
        invoice.save()

    repeat_card_payment(invoice)


def repeat_card_payment(invoice):
    resp = requests.post(settings.YANDEX_MONEY_MWS_URL + 'repeatCardPayment',
                         data={
                             'clientOrderId': invoice.id,  # уникальное возрастающее целое число
                             'invoiceId': invoice.yandex_pay.invoice_id,
                             'amount': invoice.price,
                             'orderNumber': invoice.yandex_pay.order_number
                         },
                         cert=(
                             os.path.join(settings.SSL_ROOT, 'skillbox.cer'),
                             os.path.join(settings.SSL_ROOT, 'skillbox.key')
                         ),
                         verify=os.path.join(settings.SSL_ROOT, 'yamoney_chain.cer'))

    logger_yandex.info(resp.text)