# coding=utf-8
## Реализация платежных сервисов
from django.shortcuts import render
from lms.decors import response_decor
from finance.models import Bill
from django.http import Http404
from lms.tools import gen_pay_sig


@response_decor(template='good_pay.html', without_auth=True)
def success(request):
    # Страница успешного платежа
    if request.GET.get('sp_sig') and gen_pay_sig(request.GET) == request.GET.get('sp_sig'):
        try:
            bill = Bill.objects.get(id=request.GET['sp_order_id'])

        except Bill.DoesNotExist:
            raise Http404

        else:
            bill.status = 'F' if request.GET['sp_result'] == '1' else 'C'
            bill.out_id = request.GET['sp_payment_id']
            bill._method = 'S'
            bill.save()

            url = '/?success_pay=True' if bill.service.freepay else '/?success_pay=True&course_id={0}'.format(bill.service.course.id)
            if bill.admitad_uid:
                url += '&admitad_uid={0}&order_id={1}&email={2}'.format(bill.admitad_uid, bill.id, bill.user.email)

        return {'redirect': url}
    else:
        raise Http404


@response_decor(template='fail_pay.html', without_auth=True)
def fail(request):
    # Страница ошибки платежа
    if request.GET.get('sp_sig') and gen_pay_sig(request.GET) == request.GET.get('sp_sig'):
        try:
            bill = Bill.objects.get(id=request.GET['sp_order_id'])

        except Bill.DoesNotExist:
            raise Http404

        else:
            bill.status = 'F' if request.GET['sp_result'] else 'C'
            bill.out_id = request.GET['sp_payment_id']
            bill._method = 'S'
            bill.save()

            url = '/?fail_pay=True&fail_url={0}'.format(bill.service.url) if bill.service.freepay else '/?fail_pay=True&fail_pay_id={0}'.format(bill.id)
        return {'redirect': url}
    else:
        raise Http404


def result(request):
    # Страница получения результата о платежах
    if request.GET.get('sp_sig') and gen_pay_sig(request.GET) == request.GET.get('sp_sig'):
        try:
            bill = Bill.objects.get(id=request.GET['sp_order_id'])
        except Bill.DoesNotExist:
            keys = {'sp_salt': request.GET['sp_salt'],
                    'sp_status': 'error',
                    'sp_description': 'Order not found'}

            return render(request, 'simplepayresult.xml',
                          {"salt": request.GET['sp_salt'],
                           'status': 'error',
                           'description': 'Order not found',
                           'sig': gen_pay_sig(keys)},
                          content_type="application/xhtml+xml")

        else:
            bill.status = 'F' if request.GET['sp_result'] == '1' else 'C'
            bill.out_id = request.GET['sp_payment_id']
            bill._method = 'S'
            bill.save()

            keys = {'sp_salt': request.GET['sp_salt'],
                    'sp_status': 'ok',
                    'sp_description': 'Good pay'}

            return render(request, 'simplepayresult.xml',
                          {'salt': request.GET['sp_salt'],
                           'status': 'ok',
                           'sig': gen_pay_sig(keys),
                           'description': 'Good pay'},
                          content_type="application/xhtml+xml")
    else:
        raise Http404