Blocks allow BOTS to augment the capacities of a chat message. At the moment only one block is available: `actions`, accepting only one type of element: `button`.
<img width="708" alt="Screenshot 2024-11-15 at 19 14 02" src="https://github.com/user-attachments/assets/63f32a29-05b1-4f32-9edd-8d8e1007d705">
# Usage
```ruby
Chat::CreateMessage.call(
params: {
message: "Welcome!",
chat_channel_id: 2,
blocks: [
{
type: "actions",
elements: [
{ value: "foo", type: "button", text: { text: "How can I install themes?", type: "plain_text" } }
]
}
]
},
guardian: Discourse.system_user.guardian
)
```
# Documentation
## Blocks
### Actions
Holds interactive elements: button.
#### Fields
| Field | Type | Description | Required? |
|--------|--------|--------|--------|
| type | string | For an actions block, type is always `actions` | Yes |
| elements | array | An array of interactive elements, maximum 10 elements | Yes |
| block_id | string | An unique identifier for the block, will be generated if not specified. It has to be unique per message | No |
#### Example
```json
{
"type": "actions",
"block_id": "actions_1",
"elements": [...]
}
```
## Elements
### Button
#### Fields
| Field | Type | Description | Required? |
|--------|--------|--------|--------|
| type | string | For a button, type is always `button` | Yes |
| text | object | A text object holding the type and text. Max 75 characters | Yes |
| value | string | The value returned after the interaction has been validated. Maximum length is 2000 characters | No |
| style | string | Can be `primary` , `success` or `danger` | No |
| action_id | string | An unique identifier for the action, will be generated if not specified. It has to be unique per message | No |
#### Example
```json
{
"type": "actions",
"block_id": "actions_1",
"elements": [
{
"type": "button",
"text": {
"type": "plain_text",
"text": "Ok"
},
"value": "ok",
"action_id": "button_1"
}
]
}
```
## Interactions
When a user interactions with a button the following flow will happen:
- We send an interaction request to the server
- Server checks if the user can make this interaction
- If the user can make this interaction, the server will:
* `DiscourseEvent.trigger(:chat_message_interaction, interaction)`
* return a JSON document
```json
{
"interaction": {
"user": {
"id": 1,
"username": "j.jaffeux"
},
"channel": {
"id": 1,
"title": "Staff"
},
"message": {
"id": 1,
"text": "test",
"user_id": -1
},
"action": {
"text": {
"text": "How to install themes?",
"type": "plain_text"
},
"type": "button",
"value": "click_me_123",
"action_id": "bf4f30b9-de99-4959-b3f5-632a6a1add04"
}
}
}
```
* Fire a `appEvents.trigger("chat:message_interaction", interaction)`
Chat channels that are linked to a category can be set to automatically join users.
This is handled by subscribing to the following events
- group_destroyed
- user_seen
- user_confirmed_email
- user_added_to_group
- user_removed_from_group
- category_updated
- site_setting_changed (for `chat_allowed_groups`)
As well as a
- hourly background job (`AutoJoinUsers`)
- `CreateCategoryChannel` service
- `UpdateChannel` service
There was however two issues with the current implementation
1. We were triggering a lot of background jobs, mostly because it was decided to batch to auto join/leave into groups of 1000 users, adding a lot of stress to the system
2. We had one "class" (a service or a background job) per "event" and all of them had slightly different ways to select users to join/leave, making it hard to keep everything in sync
This PR "simply" adds two new servicesL `AutoJoinChannels` and `AutoLeaveChannels` that takes care, in an efficient way, of all the cases when users might automatically join a leave a chat channel.
Every other changes come from the fact that we're now always calling either one of those services, depending on the event that happened.
In the making of these classes, a few bugs were encountered and fixed, notably
- A user is only ever able to access chat channels if and only if they're part of a group listed in the `chat_allowed_group` site setting
- A category that has no associated "category groups" is only accessible to staff members (and not "Everyone")
- A silenced user should not be able to automatically join channels
- We should not attempt to automatically join users to deleted chat channels
- There is no need to automatically join users to chat channels that have already more than `max_chat_auto_joined_users` users
Internal - t/135259 & t/70607
* DEV: add specs for auto join/leave channels services
* DEV: less hacky specs
* DEV: no instance variables in specs
This change will only prevent a cooked message with [grid] to show [grid] instead the content will be wrapped in `div class="d-image-grid"`. This is only enabled on messages made by bot, as regular users could use grid but have no reason to use it ATM. It will also not apply the decoration which shouldn't change the behavior more than just remove grid markup from the message
The markdown it rule "heading" will only be used when the message is done by a bot, which means an id < 0.
This commit also adds a is-bot css class on messages made by a bot, for finer control.
---------
Co-authored-by: Martin Brennan <mjrbrennan@gmail.com>
Support threads in DMs and group chats so members can keep their conversations organized.
This change adds a new toggle switch for threads within the Chat Channel Settings screen. For new direct message channels threading is enabled by default.
We have made a decision to exclude direct message threads from the My Threads screen for now.
This change adds full names to direct message channel titles when the following conditions are met:
- SiteSetting.enable_names = true
- SiteSetting.display_name_on_posts = true
- SiteSetting.prioritize_username_in_ux = false
If a user's full name is blank, it will fallback to their username in both 1-1 channels and Group DM channels.
Prior to this commit, only system users had this pass.
Another significant change of the PR, is to make membership of a channel the angular stone of the permission check to create/update/stop streaming a message. The idea being, if you are a member of a channel already we don't need to check if you can join it AGAIN.
We also have `Chat::AutoRemove::HandleCategoryUpdated` which will deal with permissions change so it's simpler and less prone to error to consider the membership as the only source of truth.
Follow up to #26712 to account for older threads that don't have a persisted excerpt, as this was previously generated on every page load.
This change allows us to build the excerpt on the fly when none exists, fixing the issue of missing message excerpts for thread previews (within channel) and thread lists (on mobile/desktop).
This change moves the chat message excerpt into a new database column (string) on the chat_messages table.
As part of this change, we will now set the excerpt within the `Chat::CreateMessage` service, and update it within the `Chat::UpdateMessage` service.
At the moment, when someone is mentioning a group, or using here or
all mention, we create a chat_mention record per user. What we want
instead is to have special kinds of mentions, so we can create only one
chat_mention record in such cases. This PR implements that.
Note, that such mentions will still have N related notifications, one
notification per a user. We don't expect we'll have performance
problems on the notifications side, but if at some point we do, we
should be able to solve them on the side of notifications
(notifications are handled in jobs, also some little delays with
the notifications are acceptable, so we can make sure notifications
are properly queued, and that processing of every notification is
fast enough to make delays small enough).
The preparation work for this PR was done in fbd24fa, where we make
it possible for one mention to have several related notifications.
A pretty tricky part of this PR is schema and data migration, I've explained
related details inline on the migration files.
This PR is a reworked version of https://github.com/discourse/discourse/pull/24670.
In chat, we need the ability to have several notifications per `chat_mention`.
Currently, we have one_to_one relationship between `chat_mentions` and `notifications`:
d7a09fb08d/plugins/chat/app/models/chat/mention.rb (L9)
We want to have one_to_many relationship. This PR implements that by introducing
a join table between `chat_mentions` and `notifications`.
The main motivation for this is that we want to solve some performance problems
with mentions that we're having now. Let's say a user sends a message with @ all
in a channel with 50 members, we do two things in this case at the moment:
- create 50 chat_mentions
- create 50 notifications
We don't want to change how notifications work in core, but we want to be more
efficient in chat, and create only 1 `chat_mention` which would link to 50 notifications.
Also note, that on the side of notifications, having a lot of notifications is not so
big problem, because notifications processing can be queued.
Apart from improving performance, this change will make the code design better.
Note that I've marked the old `chat_mention.notification_id` column as ignored, but
I'm not deleting it in this PR. We'll delete it later in https://github.com/discourse/discourse/pull/24800.
- Remove vendored copy
- Update Rails implementation to look for language definitions in node_modules
- Use webpack-based dynamic import for hljs core
- Use browser-native dynamic import for site-specific language bundle (and fallback to webpack-based dynamic import in tests)
- Simplify markdown implementation to allow all languages into the `lang-{blah}` className
- Now that all languages are passed through, resolve aliases at runtime to avoid the need for the pre-built `highlightjs-aliases` index
The most common thing that we do with fab! is:
fab!(:thing) { Fabricate(:thing) }
This commit adds a shorthand for this which is just simply:
fab!(:thing)
i.e. If you omit the block, then, by default, you'll get a `Fabricate`d object using the fabricator of the same name.
This commit starts from a simple observation: cooking messages on the hot path can be slow. Especially with a lot of mentions.
To move cooking from the hot path, this commit has made the following changes:
- updating cooked, inserting mentions and notifying user of new mentions has been moved inside the `process_message` job. It happens right after the `Chat::MessageProcessor` run, which is where the cooking happens.
- the similar existing code in `rebake!` has also been moved to rely on the `process_message`job only
- refactored `create_mentions` and `update_mentions` into one single `upsert_mentions` which can be called invariably
- allows services to decide if their job is ran inline or later. It avoids to need to know you have to use `Jobs.run_immediately!` in this case, in tests it will be inline per default
- made various frontend changes to make the chat-channel component lifecycle clearer. we had to handle `did-update @channel` which was super awkward and creating bugs with listeners which the changes of the PR made clear in failing specs
- adds a new `-processed` (and `-not-processed`) class on the chat message, this is made to have a good lifecyle hook in system specs
At the moment writing a mention similar to `@bob...hi` would have resulted in chat trying to find a user named `bob...hi` which would fail.
This was due to the `replacements` rule not being present in the rules used to cook chat messages.
We are still missing few default rules like: normalize, smartquotes, text_join, ... which don't seem to be necessary but could be added if we found a reason for. More info at: e476f78bc3/lib/parser_core.js
This would cause an error when deleting the original message of a thread, due to the non existing `last_message`. This fix is implemented using the null pattern.
Note this commit is also using this opportunity to unify naming of null objects, `Chat::DeletedUser` becomes `Chat::NullUser`, it feels better to have a name describing what is the object, instead of a name describing why this object has to be used, which can change depending on cases.
Introduce max length on text columns for description and slug fields within chat.
At a later date we will probably want to convert these text columns to string/varchar through a migration, but for now this change introduces a limit within the active record model.
Each time a message is created through a webhook, we create we webhook_event associated to this webhook.
When destroying a webhook, we were not destroying the webhook_events which was causing orphans records and more importantly errors in the app expecting to find and associated webhook.
This commit removes any logic in the app and in specs around
enable_experimental_hashtag_autocomplete and deletes some
old category hashtag code that is no longer necessary.
It also adds a `slug_ref` category instance method, which
will generate a reference like `parent:child` for a category,
with an optional depth, which hashtags use. Also refactors
PostRevisor which was using CategoryHashtagDataSource directly
which is a no-no.
Deletes the old hashtag markdown rule as well.
This is extracted from #22390.
This patch introduces a scope to avoid duplication and a new method,
`Chat::Channel.find_by_id_or_slug` to allow finding a channel either by
its id or by its slug (or its category slug).
This is extracted from #22390.
This patch simplifies a little how we handle uploads in chat, relying on
ActiveRecord mechanisms instead of calling custom methods.
This also makes `Chat::Message#validate_message` a “real” AR validation,
meaning it will run automatically when `#valid?` is called.
Initial migration and changes to models as well as
changing the following services to update last_message_id:
* Chat::MessageCreator
* Chat::RestoreMessage
* Chat::TrashMessage
The data migration will set the `last_message_id` for all existing
threads and channels in the database.
When we query the thread list as well as the channel,
we look at the last message ID for the following:
* Channel - Sorting DM channels, and channel metadata for the list of channels
* Thread - Last reply details for thread indicators and thread list
This fixes a longstanding TODO to move the contents of the
UpdateUserCountsForChannels job to the ensure_consistency!
method of Chat::Channel, which runs every 15 mins as part of
periodical updates.
This commit also addresses the performance issue of the original,
where we would fetch all channels and do an individual query to
get the count and update the count of each one. Now we do it all
in one query, and only publish the changed channels to the UI.
This commit adds an aria-label attribute to cooked hashtags using
the post/chat message decorateCooked functionality. I have just used
the inner content of the hashtag (the tag/category/channel name) for
the label -- we can reexamine at some point if we want something
different like "Link to dev category" or something, but from what I
can tell things like Twitter don't even have aria-labels for hashtags
so the text would be read out directly.
This commit also refactors any ruby specs checking the HTML of hashtags
to use rspec-html-matchers which is far clearer than having to maintain
the HTML structure in a HEREDOC for comparison, and gives better spec
failures.
c.f. https://meta.discourse.org/t/hashtags-are-getting-a-makeover/248866/23?u=martin
https://meta.discourse.org/t/markdown-preview-and-result-differ/263878
The result of this markdown had different results in the composer preview and the post. This is solved by updating Loofah to the latest version and using html5 fragments like our user had reported. While the change was only needed in cooked_post_processor.rb for this fix, other areas also had to be updated due to various side effects.
* FEATURE: reduce avatar sizes to 6 from 20
This PR introduces 3 changes:
1. SiteSetting.avatar_sizes, now does what is says on the tin.
previously it would introduce a large number of extra sizes, to allow for
various DPIs. Instead we now trust the admin with the size list.
2. When `avatar_sizes` changes, we ensure consistency and remove resized
avatars that are not longer allowed per site setting. This happens on the
12 hourly job and limited out of the box to 20k cleanups per cycle, given
this may reach out to AWS 20k times to remove things.
3.Our default avatar sizes are now "24|48|72|96|144|288" these sizes were
very specifically picked to limit amount of bluriness introduced by webkit.
Our avatars are already blurry due to 1px border, so this corrects old blur.
This change heavily reduces storage required by forums which simplifies
site moves and more.
Co-authored-by: David Taylor <david@taylorhq.com>
Followup to d4a5b79592,
this introduced an N1 because every message in the list
we had to query users for the mentions and then the user's
status too. Instead we can just include both in Chat::MessagesQuery.
This commit makes some fundamental changes to how hashtag cooking and
icon generation works in the new experimental hashtag autocomplete mode.
Previously we cooked the appropriate SVG icon with the cooked hashtag,
though this has proved inflexible especially for theming purposes.
Instead, we now cook a data-ID attribute with the hashtag and add a new
span as an icon placeholder. This is replaced on the client side with an
icon (or a square span in the case of categories) on the client side via
the decorateCooked API for posts and chat messages.
This client side logic uses the generated hashtag, category, and channel
CSS classes added in a previous commit.
This is missing changes to the sidebar to use the new generated CSS
classes and also colors and the split square for categories in the
hashtag autocomplete menu -- I will tackle this in a separate PR so it
is clearer.
Regressed in eec10efc3d. It means that backend plugin spec failures in CI were not failing the spec suite.
Fixes recent regressions and skips two of them - to be handled next week.
---------
Co-authored-by: Andrei Prigorshnev <a.prigorshnev@gmail.com>
This will enable us to begin work on user tracking
state for a thread so we can show thread-specific
unreads and mentions indicators. In this case are following
the core notification_level paradigm rather than the solution
UserChatChannelMembership went with, and eventually we
will want to refactor the other table to match this as well.
Co-authored-by: Joffrey JAFFEUX <j.jaffeux@gmail.com>
We need to create and update `chat_mentions` records for messages earlier. They should be created or updated before we call `Chat::Publisher.publish_new!` `Chat::Publisher.publish_edit!` to send the message to message bus subscribers).
This logic is covered with tests in `message_creator_spec.rb`, `message_updater_spec.rb`, `notifier_spec.rb` and `notify_mentioned_spec.rb`.
See the commits history for steps of refactoring.
This was reverted in 38cebd3ed5.
The issue was that I was using Discourse.redis.delete_prefixed
which does a slow redis KEYS lookup, which is not advised in
production. This commit removes that, and also ensures the periodical
thread count update only happens if threading is enabled.
I changed to use a redis INCR/DECR for reply count
cache. This avoids a round trip to redis to GET the current
count, and also avoids multi-process issues, where
if there's two processes trying to increment at the
same time, they may both receive the same value, add one
to it, then both write the same value back.
Then, it's only n+1 instead of n+2.
This also prevents almost all chat scheduled jobs from
running if chat is disabled, the only one remaining is
the message retention job.
This commit introduces a redis cache over the top of the thread
replies_count DB cache, so that we can quickly and accurately
increment/decrement the reply count for all users and not have
to constantly update the database-level count. This is done so
the UI can have a count that is displayed to the users on each
thread indicator, that appears to live update on each chat
message create/trash/recover inside the thread.
This commit also introduces the `Chat::RestoreMessage` service
and moves the restore endpoint into the `Api::ChannelMessages`
controller as part of incremental migrations to move things out
of ChatController.
Finally, this commit refactors `Chat::Publisher` to be less repetitive
with its `MessageBus` sending code.
Followup to bd5c5c4b5f,
this commit hooks up the bulk delete events for chat
messages inside the thread panel, by fanning out the
deleted message IDs based on whether they belong to
a thread or not.
Also adds a system spec to cover this case, as previously
the bulk delete event would have been broken with an incorrect
`typ` rather than `type` hash key.
