import logging
from datetime import datetime
from uuid import uuid4
from flask import Flask, request
from flask_restful import Resource, Api
from config import etcd_client as client, config as config
from stripe_utils import StripeUtils
from schemas import (
make_return_message, ValidationException, UserRegisterPaymentSchema,
AddProductSchema, ProductOrderSchema, OrderListSchema, create_schema
)
from helper import get_plan_id_from_product, calculate_charges
class ListProducts(Resource):
@staticmethod
def get():
products = client.get_prefix('/v1/products/')
products = [
product
for product in [p.value for p in products]
if product['active']
]
prod_dict = {}
for p in products:
prod_dict[p['usable-id']] = {
'name': p['name'],
'description': p['description'],
}
logger.debug('Products = {}'.format(prod_dict))
return prod_dict, 200
class AddProduct(Resource):
@staticmethod
def post():
data = request.get_json(silent=True) or {}
try:
logger.debug('Got data: {}'.format(str(data)))
validator = AddProductSchema(data)
validator.is_valid()
except ValidationException as err:
return make_return_message(err, 400)
else:
cleaned_values = validator.get_cleaned_values()
previous_product = cleaned_values.get('product', None)
if previous_product:
if not cleaned_values['update']:
return make_return_message('Product already exists. Pass --update to update the product.')
else:
product_uuid = previous_product.pop('uuid')
else:
product_uuid = uuid4().hex
product_value = cleaned_values['specs']
product_key = '/v1/products/{}'.format(product_uuid)
product_value['uuid'] = product_uuid
logger.debug('Adding product data: {}'.format(str(product_value)))
client.put(product_key, product_value)
if not previous_product:
return make_return_message('Product created.')
else:
return make_return_message('Product updated.')
class UserRegisterPayment(Resource):
@staticmethod
def post():
data = request.get_json(silent=True) or {}
try:
logger.debug('Got data: {}'.format(str(data)))
validator = UserRegisterPaymentSchema(data)
validator.is_valid()
except ValidationException as err:
return make_return_message(err, 400)
else:
cleaned_values = validator.get_cleaned_values()
last4 = data['card_number'].strip()[-4:]
stripe_utils = StripeUtils()
# Does customer already exist ?
stripe_customer = stripe_utils.get_stripe_customer_from_email(cleaned_values['user']['mail'])
# Does customer already exist ?
if stripe_customer is not None:
logger.debug('Customer {}-{} exists already'.format(
cleaned_values['username'], cleaned_values['user']['mail'])
)
# Check if the card already exists
ce_response = stripe_utils.card_exists(
stripe_customer.id, cc_number=data['card_number'],
exp_month=int(data['expiry_month']),
exp_year=int(data['expiry_year']),
cvc=data['cvc'])
if ce_response['response_object']:
message = 'The given card ending in {} exists already.'.format(last4)
return make_return_message(message, 400)
elif ce_response['response_object'] is False:
# Associate card with user
logger.debug('Adding card ending in {}'.format(last4))
token_response = stripe_utils.get_token_from_card(
data['card_number'], data['cvc'], data['expiry_month'],
data['expiry_year']
)
if token_response['response_object']:
logger.debug('Token {}'.format(token_response['response_object'].id))
resp = stripe_utils.associate_customer_card(
stripe_customer.id, token_response['response_object'].id
)
if resp['response_object']:
return make_return_message(
'Card ending in {} registered as your payment source'.format(last4)
)
else:
return make_return_message('Error with payment gateway. Contact support', 400)
else:
return make_return_message('Error: {}'.format(ce_response['error']), 400)
else:
# Stripe customer does not exist, create a new one
logger.debug(
'Customer {} does not exist, creating new'.format(cleaned_values['user']['mail'])
)
token_response = stripe_utils.get_token_from_card(
cleaned_values['card_number'], cleaned_values['cvc'],
cleaned_values['expiry_month'], cleaned_values['expiry_year']
)
if token_response['response_object']:
logger.debug('Token {}'.format(token_response['response_object'].id))
# Create stripe customer
stripe_customer_resp = stripe_utils.create_customer(
name=cleaned_values['card_holder_name'],
token=token_response['response_object'].id,
email=cleaned_values['user']['mail'],
address=cleaned_values['address']
)
stripe_customer = stripe_customer_resp['response_object']
if stripe_customer:
logger.debug('Created stripe customer {}'.format(stripe_customer.id))
return make_return_message(
'Card ending in {} registered as your payment source'.format(last4)
)
else:
return make_return_message('Error with card. Contact support', 400)
else:
return make_return_message('Error with payment gateway. Contact support', 400)
class ProductOrder(Resource):
@staticmethod
def post():
data = request.get_json(silent=True) or {}
try:
validator = ProductOrderSchema(data)
validator.is_valid()
except ValidationException as err:
return make_return_message(err, 400)
else:
cleaned_values = validator.get_cleaned_values()
stripe_utils = StripeUtils()
product = cleaned_values['product']
# Check the user has a payment source added
stripe_customer = stripe_utils.get_stripe_customer_from_email(cleaned_values['user']['mail'])
if not stripe_customer or len(stripe_customer.sources) == 0:
return make_return_message('Please register your payment method first.', 400)
try:
product_schema = create_schema(product, data)
product_schema = product_schema()
product_schema.is_valid()
except ValidationException as err:
return make_return_message(err, 400)
else:
transformed_data = product_schema.get_cleaned_values()
logger.debug('Tranformed data: {}'.format(transformed_data))
one_time_charge, recurring_charge = calculate_charges(product, transformed_data)
recurring_charge = int(recurring_charge)
if not cleaned_values['pay']:
return make_return_message(
'You would be charged {} CHF one time and {} CHF every {}. '
'Add --pay to command to order.'.format(
one_time_charge, recurring_charge, product['recurring_period']
)
)
with client.client.lock('product-order') as _:
# Initiate a one-time/subscription based on product type
if recurring_charge > 0:
logger.debug('Product {} is recurring payment'.format(product['name']))
plan_id = get_plan_id_from_product(product)
res = stripe_utils.get_or_create_stripe_plan(
product_name=product['name'],
stripe_plan_id=plan_id, amount=recurring_charge,
interval=product['recurring_period'],
)
if res['response_object']:
logger.debug('Obtained plan {}'.format(plan_id))
subscription_res = stripe_utils.subscribe_customer_to_plan(
stripe_customer.id,
[{'plan': plan_id}]
)
subscription_obj = subscription_res['response_object']
if subscription_obj is None or subscription_obj.status != 'active':
return make_return_message(
'Error subscribing to plan. Detail: {}'.format(subscription_res['error']), 400
)
else:
order_obj = {
'order-id': uuid4().hex,
'ordered-at': datetime.now().isoformat(),
'product': product['usable-id'],
'one-time-price': one_time_charge,
'recurring-price': recurring_charge,
'recurring-period': product['recurring_period']
}
client.put(
'/v1/user/{}/orders/{}'.format(
cleaned_values['username'], order_obj['order-id']
), order_obj
)
product['quantity'] -= 1
client.put('/v1/products/{}'.format(product['uuid']), product)
return {
'message': 'Order Successful.',
**order_obj
}
else:
logger.error('Could not create plan {}'.format(plan_id))
return make_return_message('Something wrong happened. Contact administrator', 400)
elif recurring_charge == 0 and one_time_charge > 0:
logger.debug('Product {} is one-time payment'.format(product['name']))
charge_response = stripe_utils.make_charge(
amount=one_time_charge,
customer=stripe_customer.id
)
stripe_onetime_charge = charge_response.get('response_object')
# Check if the payment was approved
if not stripe_onetime_charge:
msg = charge_response.get('error')
return make_return_message('Error subscribing to plan. Details: {}'.format(msg), 400)
order_obj = {
'order-id': uuid4().hex,
'ordered-at': datetime.now().isoformat(),
'product': product['usable-id'],
'one-time-price': one_time_charge,
}
client.put(
'/v1/user/{}/orders/{}'.format(cleaned_values['username'], order_obj['order-id']),
order_obj
)
product['quantity'] -= 1
client.put('/v1/products/{}'.format(product['uuid']), product)
return {'message': 'Order successful', **order_obj}, 200
class OrderList(Resource):
@staticmethod
def post():
data = request.get_json(silent=True) or {}
try:
validator = OrderListSchema(data)
validator.is_valid()
except ValidationException as err:
return make_return_message(err, 400)
else:
cleaned_values = validator.get_cleaned_values()
orders = client.get_prefix('/v1/user/{}/orders'.format(cleaned_values['username']))
orders_dict = {
order.value['order-id']: {
**order.value
}
for order in orders
}
logger.debug('Orders = {}'.format(orders_dict))
return {'orders': orders_dict}, 200
if __name__ == '__main__':
logger = logging.getLogger()
logger.setLevel(logging.DEBUG)
log_formater = logging.Formatter('[%(filename)s:%(lineno)d] %(message)s')
stream_logger = logging.StreamHandler()
stream_logger.setFormatter(log_formater)
# file_logger = logging.FileHandler('log.txt')
# file_logger.setLevel(logging.DEBUG)
# file_logger.setFormatter(log_formater)
logger.addHandler(stream_logger)
# logger.addHandler(file_logger)
app = Flask(__name__)
api = Api(app)
api.add_resource(ListProducts, '/product/list')
api.add_resource(AddProduct, '/product/add')
api.add_resource(ProductOrder, '/product/order')
api.add_resource(UserRegisterPayment, '/user/register_payment')
api.add_resource(OrderList, '/order/list')
app.run(host='::', port=config['app']['port'], debug=True)