mirror of https://github.com/zulip/zulip.git
341 lines
13 KiB
Python
341 lines
13 KiB
Python
# Webhooks for external integrations.
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import time
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from typing import Any, Dict, Optional, Sequence, Tuple
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from django.http import HttpRequest, HttpResponse
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from zerver.decorator import webhook_view
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from zerver.lib.exceptions import UnsupportedWebhookEventType
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from zerver.lib.request import REQ, has_request_variables
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from zerver.lib.response import json_success
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from zerver.lib.timestamp import timestamp_to_datetime
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from zerver.lib.webhooks.common import check_send_webhook_message
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from zerver.models import UserProfile
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class SuppressedEvent(Exception):
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pass
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class NotImplementedEventType(SuppressedEvent):
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pass
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ALL_EVENT_TYPES = [
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"charge.dispute.closed",
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"charge.dispute.created",
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"charge.failed",
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"charge.succeeded",
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"charge.succeeded",
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"customer.created",
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"customer.created",
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"customer.deleted",
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"customer.discount.created",
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"customer.subscription.created",
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"customer.subscription.deleted",
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"customer.subscription.trial_will_end",
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"customer.subscription.updated",
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"customer.updated",
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"invoice.created",
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"invoice.updated",
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"invoice.payment_failed",
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"invoiceitem.created",
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"charge.refund.updated",
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"charge.refund.updated",
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]
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@webhook_view("Stripe", all_event_types=ALL_EVENT_TYPES)
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@has_request_variables
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def api_stripe_webhook(
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request: HttpRequest,
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user_profile: UserProfile,
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payload: Dict[str, Any] = REQ(argument_type="body"),
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stream: str = REQ(default="test"),
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) -> HttpResponse:
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try:
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topic, body = topic_and_body(payload)
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except SuppressedEvent: # nocoverage
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return json_success(request)
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check_send_webhook_message(request, user_profile, topic, body, payload["type"])
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return json_success(request)
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def topic_and_body(payload: Dict[str, Any]) -> Tuple[str, str]:
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event_type = payload["type"] # invoice.created, customer.subscription.created, etc
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if len(event_type.split(".")) == 3:
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category, resource, event = event_type.split(".")
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else:
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resource, event = event_type.split(".")
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category = resource
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object_ = payload["data"]["object"] # The full, updated Stripe object
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# Set the topic to the customer_id when we can
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topic = ""
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customer_id = object_.get("customer", None)
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if customer_id is not None:
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# Running into the 60 character topic limit.
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# topic = '[{}](https://dashboard.stripe.com/customers/{})' % (customer_id, customer_id)
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topic = customer_id
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body = None
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def update_string(blacklist: Sequence[str] = []) -> str:
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assert "previous_attributes" in payload["data"]
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previous_attributes = payload["data"]["previous_attributes"]
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for attribute in blacklist:
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previous_attributes.pop(attribute, None)
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if not previous_attributes: # nocoverage
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raise SuppressedEvent()
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return "".join(
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"\n* "
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+ attribute.replace("_", " ").capitalize()
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+ " is now "
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+ stringify(object_[attribute])
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for attribute in sorted(previous_attributes.keys())
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)
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def default_body(update_blacklist: Sequence[str] = []) -> str:
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body = "{resource} {verbed}".format(
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resource=linkified_id(object_["id"]), verbed=event.replace("_", " ")
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)
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if event == "updated":
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return body + update_string(blacklist=update_blacklist)
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return body
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if category == "account": # nocoverage
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if resource == "account":
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if event == "updated":
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if "previous_attributes" not in payload["data"]:
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raise SuppressedEvent()
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topic = "account updates"
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body = update_string()
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else:
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# Part of Stripe Connect
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raise NotImplementedEventType()
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if category == "application_fee": # nocoverage
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# Part of Stripe Connect
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raise NotImplementedEventType()
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if category == "balance": # nocoverage
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# Not that interesting to most businesses, I think
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raise NotImplementedEventType()
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if category == "charge":
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if resource == "charge":
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if not topic: # only in legacy fixtures
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topic = "charges"
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body = "{resource} for {amount} {verbed}".format(
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resource=linkified_id(object_["id"]),
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amount=amount_string(object_["amount"], object_["currency"]),
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verbed=event,
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)
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if object_["failure_code"]: # nocoverage
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body += ". Failure code: {}".format(object_["failure_code"])
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if resource == "dispute":
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topic = "disputes"
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body = default_body() + ". Current status: {status}.".format(
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status=object_["status"].replace("_", " ")
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)
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if resource == "refund":
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topic = "refunds"
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body = "A {resource} for a {charge} of {amount} was updated.".format(
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resource=linkified_id(object_["id"], lower=True),
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charge=linkified_id(object_["charge"], lower=True),
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amount=amount_string(object_["amount"], object_["currency"]),
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)
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if category == "checkout_beta": # nocoverage
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# Not sure what this is
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raise NotImplementedEventType()
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if category == "coupon": # nocoverage
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# Not something that likely happens programmatically
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raise NotImplementedEventType()
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if category == "customer":
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if resource == "customer":
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# Running into the 60 character topic limit.
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# topic = '[{}](https://dashboard.stripe.com/customers/{})' % (object_['id'], object_['id'])
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topic = object_["id"]
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body = default_body(update_blacklist=["delinquent", "currency", "default_source"])
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if event == "created":
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if object_["email"]:
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body += "\nEmail: {}".format(object_["email"])
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if object_["metadata"]: # nocoverage
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for key, value in object_["metadata"].items():
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body += f"\n{key}: {value}"
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if resource == "discount":
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body = "Discount {verbed} ([{coupon_name}]({coupon_url})).".format(
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verbed=event.replace("_", " "),
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coupon_name=object_["coupon"]["name"],
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coupon_url="https://dashboard.stripe.com/{}/{}".format(
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"coupons", object_["coupon"]["id"]
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),
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)
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if resource == "source": # nocoverage
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body = default_body()
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if resource == "subscription":
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body = default_body()
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if event == "trial_will_end":
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DAY = 60 * 60 * 24 # seconds in a day
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# Basically always three: https://stripe.com/docs/api/python#event_types
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body += " in {days} days".format(
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days=int((object_["trial_end"] - time.time() + DAY // 2) // DAY)
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)
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if event == "created":
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if object_["plan"]:
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body += "\nPlan: [{plan_nickname}](https://dashboard.stripe.com/plans/{plan_id})".format(
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plan_nickname=object_["plan"]["nickname"], plan_id=object_["plan"]["id"]
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)
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if object_["quantity"]:
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body += "\nQuantity: {}".format(object_["quantity"])
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if "billing" in object_: # nocoverage
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body += "\nBilling method: {}".format(object_["billing"].replace("_", " "))
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if category == "file": # nocoverage
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topic = "files"
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body = default_body() + " ({purpose}). \nTitle: {title}".format(
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purpose=object_["purpose"].replace("_", " "), title=object_["title"]
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)
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if category == "invoice":
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if event == "upcoming": # nocoverage
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body = "Upcoming invoice created"
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elif (
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event == "updated"
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and payload["data"]["previous_attributes"].get("paid", None) is False
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and object_["paid"] is True
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and object_["amount_paid"] != 0
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and object_["amount_remaining"] == 0
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):
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# We are taking advantage of logical AND short circuiting here since we need the else
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# statement below.
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object_id = object_["id"]
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invoice_link = f"https://dashboard.stripe.com/invoices/{object_id}"
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body = f"[Invoice]({invoice_link}) is now paid"
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else:
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body = default_body(
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update_blacklist=[
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"lines",
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"description",
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"number",
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"finalized_at",
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"status_transitions",
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"payment_intent",
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]
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)
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if event == "created":
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# Could potentially add link to invoice PDF here
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body += " ({reason})\nTotal: {total}\nAmount due: {due}".format(
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reason=object_["billing_reason"].replace("_", " "),
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total=amount_string(object_["total"], object_["currency"]),
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due=amount_string(object_["amount_due"], object_["currency"]),
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)
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if category == "invoiceitem":
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body = default_body(update_blacklist=["description", "invoice"])
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if event == "created":
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body += " for {amount}".format(
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amount=amount_string(object_["amount"], object_["currency"])
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)
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if category.startswith("issuing"): # nocoverage
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# Not implemented
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raise NotImplementedEventType()
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if category.startswith("order"): # nocoverage
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# Not implemented
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raise NotImplementedEventType()
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if category in [
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"payment_intent",
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"payout",
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"plan",
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"product",
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"recipient",
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"reporting",
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"review",
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"sigma",
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"sku",
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"source",
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"subscription_schedule",
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"topup",
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"transfer",
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]: # nocoverage
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# Not implemented. In theory doing something like
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# body = default_body()
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# may not be hard for some of these
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raise NotImplementedEventType()
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if body is None:
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raise UnsupportedWebhookEventType(event_type)
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return (topic, body)
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def amount_string(amount: int, currency: str) -> str:
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zero_decimal_currencies = [
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"bif",
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"djf",
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"jpy",
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"krw",
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"pyg",
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"vnd",
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"xaf",
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"xpf",
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"clp",
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"gnf",
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"kmf",
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"mga",
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"rwf",
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"vuv",
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"xof",
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]
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if currency in zero_decimal_currencies:
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decimal_amount = str(amount) # nocoverage
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else:
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decimal_amount = f"{float(amount) * 0.01:.02f}"
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if currency == "usd": # nocoverage
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return "$" + decimal_amount
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return decimal_amount + f" {currency.upper()}"
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def linkified_id(object_id: str, lower: bool = False) -> str:
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names_and_urls: Dict[str, Tuple[str, Optional[str]]] = {
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# Core resources
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"ch": ("Charge", "charges"),
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"cus": ("Customer", "customers"),
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"dp": ("Dispute", "disputes"),
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"du": ("Dispute", "disputes"),
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"file": ("File", "files"),
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"link": ("File link", "file_links"),
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"pi": ("Payment intent", "payment_intents"),
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"po": ("Payout", "payouts"),
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"prod": ("Product", "products"),
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"re": ("Refund", "refunds"),
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"tok": ("Token", "tokens"),
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# Payment methods
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# payment methods have URL prefixes like /customers/cus_id/sources
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"ba": ("Bank account", None),
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"card": ("Card", None),
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"src": ("Source", None),
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# Billing
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# coupons have a configurable id, but the URL prefix is /coupons
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# discounts don't have a URL, I think
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"in": ("Invoice", "invoices"),
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"ii": ("Invoice item", "invoiceitems"),
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# products are covered in core resources
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# plans have a configurable id, though by default they are created with this pattern
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# 'plan': ('Plan', 'plans'),
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"sub": ("Subscription", "subscriptions"),
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"si": ("Subscription item", "subscription_items"),
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# I think usage records have URL prefixes like /subscription_items/si_id/usage_record_summaries
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"mbur": ("Usage record", None),
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# Undocumented :|
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"py": ("Payment", "payments"),
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"pyr": ("Refund", "refunds"), # Pseudo refunds. Not fully tested.
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# Connect, Fraud, Orders, etc not implemented
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}
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name, url_prefix = names_and_urls[object_id.split("_")[0]]
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if lower: # nocoverage
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name = name.lower()
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if url_prefix is None: # nocoverage
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return name
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return f"[{name}](https://dashboard.stripe.com/{url_prefix}/{object_id})"
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def stringify(value: Any) -> str:
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if isinstance(value, int) and value > 1500000000 and value < 2000000000:
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return timestamp_to_datetime(value).strftime("%b %d, %Y, %H:%M:%S %Z")
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return str(value)
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