# coding=utf-8
import datetime
from hashlib import md5

from django.shortcuts import render
from django.views.decorators.csrf import csrf_exempt

from finance.models import Bill, YandexKassaHistory
from settings.settings import YANDEX_MONEY_SHOP_PASSWORD


def gen_md5(cd):
    return md5(';'.join((
        cd['action'],
        cd['orderSumAmount'],
        cd['orderSumCurrencyPaycash'],
        cd['orderSumBankPaycash'],
        cd['shopId'],
        cd['invoiceId'],
        cd['customerNumber'],
        YANDEX_MONEY_SHOP_PASSWORD,
    )).encode('utf-8')).hexdigest().upper()


@csrf_exempt
def aviso(request):
    # Страница получения результата о платежах
    data = request.POST
    tmp = {}
    for key, value in data.items():
        tmp[key] = value
    tmp = str(tmp)
    _time = datetime.datetime.now()
    _log = YandexKassaHistory.objects.create(text=tmp, _type='paymentAvisoResponse')
    result = {
        'performedDatetime': _time.isoformat(),
        'code': '200',
        'shopId': data.get('shopId'),
        'invoiceId': data.get('invoiceId'),
        'message': ''
    }
    if not data.get('md5'):
        return render(request, 'yandexkassa_result.xml', {'check_type': 'paymentAvisoResponse', 'data': result},
                      content_type="application/xhtml+xml")

    if data['md5'] == gen_md5(data):
        try:
            bill = Bill.objects.get(id=data['orderNumber'])
        except Bill.DoesNotExist:
            result['message'] = u'Не найден счет по указанным данным'

        else:
            if str(bill.user.id) == data['customerNumber']:
                bill.status = 'F'
                bill.real_price = data['shopSumAmount']
                bill.out_id = data['invoiceId']
                bill.status_changed = _time
                bill.save()
                result['code'] = '0'

            else:
                result['message'] = u'Не найден пользователь, указанный в запросе'

    else:
        result['code'] = '1'
        result['message'] = u'Не сходится ключ платежа'

    return render(request, 'yandexkassa_result.xml', {'check_type': 'paymentAvisoResponse', 'data': result},
                  content_type="application/xhtml+xml")


@csrf_exempt
def check(request):
    # Страница получения результата о платежах
    data = request.POST
    _time = datetime.datetime.now()
    tmp = {}
    for key, value in data.items():
        tmp[key] = value
    tmp = str(tmp)
    if data.get('action'):
        YandexKassaHistory.objects.create(text=tmp, _type=data['action'])
    else:
        YandexKassaHistory.objects.create(text=tmp, _type='empty_check')

    result = {
        'performedDatetime': _time.isoformat(),
        'code': '200' if data.get('action') == 'checkOrder' else '1',
        'shopId': data.get('shopId'),
        'orderSumAmount': data.get('orderSumAmount'),
        'invoiceId': data.get('invoiceId'),
        'message': ''
    }
    if not data.get('md5'):
        return render(request, 'yandexkassa_result.xml',
                      {'check_type': 'checkOrderResponse',
                       'data': result},
                      content_type="application/xhtml+xml")

    if data['md5'] == gen_md5(data):
        try:
            bill = Bill.objects.get(id=data['orderNumber'])
        except Bill.DoesNotExist:
            result['message'] = u'Не найден счет по указанным данным'

        else:

            if str(bill.user.id) == data['customerNumber']:
                if data['action'] != 'checkOrder':
                    bill.status = 'B'
                    bill.out_id = data['invoiceId']
                    bill.status_changed = _time
                bill._method = 'Y'
                bill.inside_data = tmp
                bill.test = True
                bill.save()
                result['code'] = '0'

            else:
                result['message'] = u'Не найден пользователь, указанный в запросе'
    else:
        result['code'] = '1'
        result['message'] = u'Не сходится ключ платежа'
        result['tech_message'] = str(data['md5']) + str('_') + str(gen_md5(data))

    return render(request, 'yandexkassa_result.xml', {'check_type': 'checkOrderResponse' if data['action'] == 'checkOrder' else 'cancelOrderResponse', 'data': result},
                  content_type="application/xhtml+xml")