# Webhooks for external integrations. import time from datetime import datetime from typing import Any, Dict, Optional, Text from django.http import HttpRequest, HttpResponse from django.utils.translation import ugettext as _ from zerver.decorator import api_key_only_webhook_view from zerver.lib.actions import check_send_stream_message from zerver.lib.request import REQ, has_request_variables from zerver.lib.response import json_error, json_success from zerver.models import UserProfile @api_key_only_webhook_view('Stripe') @has_request_variables def api_stripe_webhook(request, user_profile, payload=REQ(argument_type='body'), stream=REQ(default='test'), topic=REQ(default=None)): # type: (HttpRequest, UserProfile, Dict[str, Any], Text, Optional[Text]) -> HttpResponse body = None event_type = payload["type"] data_object = payload["data"]["object"] if event_type.startswith('charge'): charge_url = "https://dashboard.stripe.com/payments/{}" amount_string = amount(payload["data"]["object"]["amount"], payload["data"]["object"]["currency"]) if event_type.startswith('charge.dispute'): charge_id = data_object["charge"] link = charge_url.format(charge_id) body_template = "A charge dispute for **{amount}** has been {rest}.\n"\ "The charge in dispute {verb} **[{charge}]({link})**." if event_type == "charge.dispute.closed": rest = "closed as **{}**".format(data_object['status']) verb = 'was' else: rest = "created" verb = 'is' body = body_template.format(amount=amount_string, rest=rest, verb=verb, charge=charge_id, link=link) else: charge_id = data_object["id"] link = charge_url.format(charge_id) body_template = "A charge with id **[{charge_id}]({link})** for **{amount}** has {verb}." if event_type == "charge.failed": verb = "failed" else: verb = "succeeded" body = body_template.format(charge_id=charge_id, link=link, amount=amount_string, verb=verb) if topic is None: topic = "Charge {}".format(charge_id) elif event_type.startswith('customer'): object_id = data_object["id"] if event_type.startswith('customer.subscription'): link = "https://dashboard.stripe.com/subscriptions/{}".format(object_id) if event_type == "customer.subscription.created": amount_string = amount(data_object["plan"]["amount"], data_object["plan"]["currency"]) body_template = "A new customer subscription for **{amount}** " \ "every **{interval}** has been created.\n" \ "The subscription has id **[{id}]({link})**." body = body_template.format( amount=amount_string, interval=data_object['plan']['interval'], id=object_id, link=link ) elif event_type == "customer.subscription.deleted": body_template = "The customer subscription with id **[{id}]({link})** was deleted." body = body_template.format(id=object_id, link=link) else: # customer.subscription.trial_will_end DAY = 60 * 60 * 24 # seconds in a day # days_left should always be three according to # https://stripe.com/docs/api/python#event_types, but do the # computation just to be safe. days_left = int((data_object["trial_end"] - time.time() + DAY//2) // DAY) body_template = ("The customer subscription trial with id" " **[{id}]({link})** will end in {days} days.") body = body_template.format(id=object_id, link=link, days=days_left) else: link = "https://dashboard.stripe.com/customers/{}".format(object_id) body_template = "{beginning} customer with id **[{id}]({link})** {rest}." if event_type == "customer.created": beginning = "A new" if data_object["email"] is None: rest = "has been created" else: rest = "and email **{}** has been created".format(data_object['email']) else: beginning = "A" rest = "has been deleted" body = body_template.format(beginning=beginning, id=object_id, link=link, rest=rest) if topic is None: topic = "Customer {}".format(object_id) elif event_type == "invoice.payment_failed": object_id = data_object['id'] link = "https://dashboard.stripe.com/invoices/{}".format(object_id) amount_string = amount(data_object["amount_due"], data_object["currency"]) body_template = "An invoice payment on invoice with id **[{id}]({link})** and "\ "with **{amount}** due has failed." body = body_template.format(id=object_id, amount=amount_string, link=link) if topic is None: topic = "Invoice {}".format(object_id) elif event_type.startswith('order'): object_id = data_object['id'] link = "https://dashboard.stripe.com/orders/{}".format(object_id) amount_string = amount(data_object["amount"], data_object["currency"]) body_template = "{beginning} order with id **[{id}]({link})** for **{amount}** has {end}." if event_type == "order.payment_failed": beginning = "An order payment on" end = "failed" elif event_type == "order.payment_succeeded": beginning = "An order payment on" end = "succeeded" else: beginning = "The" end = "been updated" body = body_template.format(beginning=beginning, id=object_id, link=link, amount=amount_string, end=end) if topic is None: topic = "Order {}".format(object_id) elif event_type.startswith('transfer'): object_id = data_object['id'] link = "https://dashboard.stripe.com/transfers/{}".format(object_id) amount_string = amount(data_object["amount"], data_object["currency"]) body_template = "The transfer with description **{description}** and id **[{id}]({link})** " \ "for amount **{amount}** has {end}." if event_type == "transfer.failed": end = 'failed' else: end = "been paid" body = body_template.format( description=data_object['description'], id=object_id, link=link, amount=amount_string, end=end ) if topic is None: topic = "Transfer {}".format(object_id) if body is None: return json_error(_("We don't support {} event".format(event_type))) check_send_stream_message(user_profile, request.client, stream, topic, body) return json_success() def amount(amount: int, currency: str) -> str: # zero-decimal currencies zero_decimal_currencies = ["bif", "djf", "jpy", "krw", "pyg", "vnd", "xaf", "xpf", "clp", "gnf", "kmf", "mga", "rwf", "vuv", "xof"] if currency in zero_decimal_currencies: return str(amount) + currency else: return '{0:.02f}'.format(float(amount) * 0.01) + currency