This allows for the discourse automation plugin to have a "Send Slack
Message" script.
The script fields are a message, url, and slack channel. This will allow
for a custom slack message to be posted but can link back to an
arbitrary url (hopefully a discourse url) like a list of unanswered
topics instead of strictly only allowing a slack message that links back
to a Discourse Post object.
Once configured, this adds a new item to the context menu of slack messages. When clicked, the menu item will generate a transcript and present the user with a custom "Post to Discourse" modal. This provides the same functionality as the existing slash-command interface, but is much more user friendly.
- Stop using `break` in a block - it doesn't work. The failure here was hidden because it was within a `defer` block, so would not cause a server error
- Refactor the error handling so that the error is passed back to Slack and displayed to the user
- Return specific error messages for user / message-history / message errors
- Tidy up the SlackCommandController to make all non-requestable methods private
- Add a test to ensure error messages are passed correctly to Slack
When creating a new Discourse post from slack with the `post` feature, record the
slack `ts` thread ID for the resulting topic post using an HTML comment to pass
the `ts` through.
When notifying slack of new Discourse posts, record the slack `ts` thread ID in
the post's topic if it has not yet been recorded. (Normally, this will be done
for the topic post, except where notifications are being posted for old topics
before this feature was created.)
Add a new rule filter `thread` which posts threaded responses to slack if there
is a `ts` recorded for the post topic.
Modify the `trigger_notifications` interface to enable other integrations to
implement similar functionality.
Present the `thread` rule in the help text and admin UI only for the slack
providers.
https://meta.discourse.org/t/optionally-threading-posts-to-parent-topic-in-slack-integration/150759
