uncloud/ucloud_pay.py
2020-01-20 12:30:12 +05:00

345 lines
No EOL
16 KiB
Python

import json
import time
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 ldap_manager import LdapManager
from schemas import (
make_return_message, ValidationException, UserRegisterPaymentSchema,
AddProductSchema, ProductOrderSchema, OrderListSchema, create_schema
)
from helper import (
get_plan_id_from_product, get_user_friendly_product, get_order_id,
)
logger = logging.getLogger()
logger.setLevel(logging.DEBUG)
log_formater = logging.Formatter('[%(filename)s:%(lineno)d] %(message)s')
stream_logger = logging.StreamHandler()
stream_logger.setLevel(logging.DEBUG)
stream_logger.setFormatter(log_formater)
logger.addHandler(stream_logger)
app = Flask(__name__)
api = Api(app)
INIT_ORDER_ID = 0
ldap_manager = LdapManager(server=config['ldap']['server'], admin_dn=config['ldap']['admin_dn'],
admin_password=config['ldap']['admin_password'])
def calculate_charges(specification, data):
one_time_charge = 0
recurring_charge = 0
for feature_name, feature_detail in specification['features'].items():
if feature_detail['constant']:
data[feature_name] = 1
if feature_detail['unit']['type'] != 'str':
one_time_charge += feature_detail['one_time_fee']
recurring_charge += (
feature_detail['price_per_unit_per_period'] * data[feature_name] /
feature_detail['unit']['value']
)
return one_time_charge, recurring_charge
class ListProducts(Resource):
@staticmethod
def get():
products = client.get_prefix('/v1/products/', value_in_json=False)
prod_dict = {}
for p in products:
p = json.loads(p.value)
prod_dict[p['usable-id']] = {
'name': p['name'],
'description': p['description'],
'active': p['active']
}
logger.debug('Products = {}'.format(prod_dict))
return prod_dict, 200
class AddProduct(Resource):
@staticmethod
def post():
data = request.json
logger.debug('Got data: {}'.format(str(data)))
try:
validator = AddProductSchema(data)
validator.is_valid()
except ValidationException as err:
return make_return_message(err, 400)
else:
if ldap_manager.is_password_valid(data['email'], data['password']):
try:
user = ldap_manager.get('(mail={})'.format(data['email']))[0]
user = json.loads(user.entry_to_json())
uid, ou, *dc = user['dn'].replace('ou=', '').replace('dc=', '').replace('uid=', '').split(',')
except Exception as err:
logger.error(str(err))
return {'message': 'No such user exists'}
else:
if ou != config['ldap']['internal_user_ou']:
logger.error('User (email=%s) does not have access to create product', validator.email)
return {'message': 'Forbidden'}, 403
else:
product_uuid = uuid4().hex
product_key = '/v1/products/{}'.format(product_uuid)
product_value = validator.specs
product_value['uuid'] = product_uuid
logger.debug('Adding product data: {}'.format(str(product_value)))
client.put(product_key, product_value, value_in_json=True)
return {'message': 'Product created'}, 200
else:
return {'message': 'Wrong Credentials'}, 403
class UserRegisterPayment(Resource):
@staticmethod
def post():
data = request.json
logger.debug('Got data: {}'.format(str(data)))
try:
validator = UserRegisterPaymentSchema(data)
validator.is_valid()
except ValidationException as err:
return make_return_message(err, 400)
else:
last4 = data['card_number'].strip()[-4:]
if ldap_manager.is_password_valid(validator.email, validator.password):
stripe_utils = StripeUtils()
# Does customer already exist ?
stripe_customer = stripe_utils.get_stripe_customer_from_email(validator.email)
# Does customer already exist ?
if stripe_customer is not None:
logger.debug('Customer {} exists already'.format(validator.email))
# 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(validator.email))
token_response = stripe_utils.get_token_from_card(
validator.card_number, validator.cvc, validator.expiry_month,
validator.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=validator.card_holder_name,
token=token_response['response_object'].id,
email=validator.email
)
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)
else:
return make_return_message('Wrong Credentials', 403)
class ProductOrder(Resource):
@staticmethod
def post():
data = request.json
try:
validator = ProductOrderSchema(data)
validator.is_valid()
except ValidationException as err:
return make_return_message(err, 400)
else:
if ldap_manager.is_password_valid(validator.email, validator.password):
stripe_utils = StripeUtils()
logger.debug('Product ID = {}'.format(validator.product_id))
# Validate the given product is ok
product = client.get('/v1/products/{}'.format(validator.product_id), value_in_json=True)
if not product:
return make_return_message('Invalid Product', 400)
product = product.value
customer_previous_orders = client.get_prefix(
'/v1/user/{}'.format(validator.email), value_in_json=True
)
membership = next(filter(lambda o: o.value['product'] == 'membership', customer_previous_orders), None)
if membership is None and data['product_id'] != 'membership':
return make_return_message('Please buy membership first to use this facility')
logger.debug('Got product {}'.format(product))
# Check the user has a payment source added
stripe_customer = stripe_utils.get_stripe_customer_from_email(validator.email)
if not stripe_customer or len(stripe_customer.sources) == 0:
return make_return_message('Please register 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.return_data()
logger.debug('Tranformed data: {}'.format(transformed_data))
one_time_charge, recurring_charge = calculate_charges(product, transformed_data)
recurring_charge = int(recurring_charge)
# 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': get_order_id(),
'ordered_at': int(time.time()),
'product': product['usable-id'],
}
client.put('/v1/user/{}/orders'.format(validator.email), order_obj, value_in_json=True)
order_obj['ordered_at'] = datetime.fromtimestamp(order_obj['ordered_at']).strftime('%c')
return make_return_message('Order Successful. Order Details: {}'.format(order_obj))
else:
logger.error('Could not create plan {}'.format(plan_id))
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': get_order_id(),
'ordered_at': int(time.time()),
'product': product['usable-id'],
}
client.put(
'/v1/user/{}/orders'.format(validator.email),order_obj,
value_in_json=True
)
order_obj['ordered_at'] = datetime.fromtimestamp(order_obj['ordered_at']).strftime('%c')
return {'message': 'Order successful', 'order_details': order_obj}, 200
else:
return make_return_message('Wrong Credentials', 400)
class OrderList(Resource):
@staticmethod
def get():
data = request.json
try:
validator = OrderListSchema(data)
validator.is_valid()
except ValidationException as err:
return make_return_message(err, 400)
else:
print(validator.email, validator.password)
if not ldap_manager.is_password_valid(validator.email, validator.password):
return {'message': 'Wrong Credentials'}, 403
orders = client.get_prefix('/v1/user/{}/orders'.format(validator.email), value_in_json=True)
orders_dict = {
order.value['order_id']: {
'ordered-at': datetime.fromtimestamp(order.value['ordered_at']).strftime('%c'),
'product': order.value['product']
}
for order in orders
}
# for p in orders:
# order_dict = p.value
# order_dict['ordered_at'] = datetime.fromtimestamp(
# order_dict['ordered_at']).strftime('%c')
# order_dict['product'] = order_dict['product']['name']
# orders_dict[order_dict['order_id']] = order_dict
logger.debug('Orders = {}'.format(orders_dict))
return orders_dict, 200
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')
if __name__ == '__main__':
app.run(host='::', port=config['app']['port'], debug=True)