Intersection observer callback can be called after the component gets destroyed:
```
Assertion Failed: calling set on destroyed object: <@ember/component:ember6019>.docked = false
at assert (ember:37774:17)
at _set2 (ember:17304:46)
at Class.set (ember:29529:29)
at Class._intersectionHandler (discourse/app/components/topic-progress:135:16)
at Backburner._run (ember:56389:25)
at Backburner._join (ember:56365:21)
at Backburner.join (ember:56082:19)
at join (ember:42874:28)
at IntersectionObserver.eval (ember:42978:19)
```
This api allows to add a dropdown at the bottom of a topic, note that this API is mobile only for now.
Also included in the commit:
- various doc fixes
- adding tests for both buttons and dropdowns APIs
- uses thrown instead of @ember/error to ensure execution is halted when incorrect parameters are given
This PR introduces a new `enable_experimental_backup_uploads` site setting (default false and hidden), which when enabled alongside `enable_direct_s3_uploads` will allow for direct S3 multipart uploads of backup .tar.gz files.
To make multipart external uploads work with both the S3BackupStore and the S3Store, I've had to move several methods out of S3Store and into S3Helper, including:
* presigned_url
* create_multipart
* abort_multipart
* complete_multipart
* presign_multipart_part
* list_multipart_parts
Then, S3Store and S3BackupStore either delegate directly to S3Helper or have their own special methods to call S3Helper for these methods. FileStore.temporary_upload_path has also removed its dependence on upload_path, and can now be used interchangeably between the stores. A similar change was made in the frontend as well, moving the multipart related JS code out of ComposerUppyUpload and into a mixin of its own, so it can also be used by UppyUploadMixin.
Some changes to ExternalUploadManager had to be made here as well. The backup direct uploads do not need an Upload record made for them in the database, so they can be moved to their final S3 resting place when completing the multipart upload.
This changeset is not perfect; it introduces some special cases in UploadController to handle backups that was previously in BackupController, because UploadController is where the multipart routes are located. A subsequent pull request will pull these routes into a module or some other sharing pattern, along with hooks, so the backup controller and the upload controller (and any future controllers that may need them) can include these routes in a nicer way.
PERF: Update like count in visible posts without an extra GET per like
Currently when a user is reading a topic and some post in it receive a
like from another user, the Ember app will be notified via MessageBus
and issue a GET to `/posts/{id}` to get the new like count. This worked
fine for us until today, but it can easily create a self-inflicted DDoS
when a topic with a large number of visitors gets a large number of
likes, since we will issue `visitors * likes` GET requests requests.
This patch optimizes this flow, by sending the new like count down in
the MessageBus notification, removing any need for the extra request.
It shouldn't cause any drift on the count because we send down the full
count instead of the difference too.
Possible follow-ups could include handling like removal.
`d-modal-body.js` was setting the text of a `modal-alert` element to `""`, but not removing any classes on that element. Changing this to call `_clearFlash()` ensures that a variety of styling classes are also removed from the element, which prevents empty alert elements being included on any subsequent modals that are displayed.
Several other controllers have also been modified to change the class of the error from `alert-error` to `error. The `alert-` is unnecessary, as it is added by `_flash(msg)` within `d-modal-body.js`.
