There are (at least) two types of objects that could be sent with a
charge.succeeded event, a Charge (e.g. for credit cards) or a Payment (if
they pay by ACH). We were handling the first but not the second.
This commit also updates the fixture for the existing charge.succeeded event
to the latest API version.
Recent changes merged in #10877 didn't handle these events
correctly. The linkified_id function breaks for the `discount`
object in the JSON payload. A cursory glance at Stripe's docs
tells me that since a discount is associated with a customer
or a coupon, it makes sense for a `discount` object to not have
an ID that can necessarily be linked to. So, we can just link
to the associated coupon instead.
This commit migrates all of our webhooks to use
check_send_webhook_message, except the following:
beeminder: Rishi wanted to wait on this one.
teamcity: This one is slightly more work.
yo: This one is PM-only. I am still trying to decide whether we
should have a force_private argument or something in
check_send_webhook_message.
facebook: No point in migrating this, will be removed as part of
#8433.
slack: Slightly more work too with the `channel_to_topics` feature.
Warrants a longer discussion.
"Local" datetimes are local to the server (or rather, are using
settings.TIME_ZONE), which in most cases is not what the recipient of the
message is expecting.