TRACKING: Event handling improvements

[Ezio-Sarthak]

ZT currently handles some common (e.g., message/subscription update) events. To know more about events API, check out the Get events doc :)

Below are some events that might be a good addition:

• [ ] alert_words: #588: Alert words handling
• [ ] update_display_settings: #988: Update user display settings
• [ ] update_global_notifications: Update global notifications (currently stream-based priority? #666)
• [ ] stream: #816: Streams (add, delete, update) (#851)
• [ ] attachment: #529 Upload/Attachment events
• [ ] submessage: Submessages (e.g., polls) (#287)
• [ ] user_status: #988: User status updates.
• [x] custom_profile_fields: Custom profile fields (extension of user info popup #848)
• [ ] default_streams: Handle Default stream updates (changed by org admin).
• [ ] delete_message: Delete message event (first event handling, then feature support; #690)
• [ ] muted_topics: #745: Handle Topic muting (#467/#914)
• [ ] user_group: User group events (add/modify/delete)
• [x] realm_emoji: #809: Realm emoji events (#827)
• [ ] typing: #992/#1015: Improve typing event handling
• [ ] restart: Server restart events (including eg. upgrades, which may trigger ZFL updates & feature support; see #mobile-team>Server feature level)

Despite the above events there are some which might not need attention as of now, however, would be worth mentioning:

• has_zoom_token: Zoom integration (OAuth flow required)
• invites_changed: Event sent to Admin if the set of invitations change
• default_stream_groups: Handling change of default user groups (experimental, not stabilized)
• hotspots: Sent when set of onboarding "hotspots" (for current user) has changed. Might be a potential follow-up of tutorial experience.
• realm_filters/realm_linkifiers: Handle a change of configured linkifiers. (See #995 for handling new format events and supporting backwards compatibility).
• realm_domains: Handles change for the set of allowed domains for new users. Might be fruitful after improving support for multiple organizations.
• realm_export: Event sent to users requesting a data export.
• realm_bot: Event responsible to let user administer a newly created bot (see also realm_user).

[zulipbot]

ERROR: Label "area:event handling" does not exist and was thus not added to this issue.

[Ezio-Sarthak]

@zulipbot add "area: event handling"

[neiljp]

Tagged with GSoC, but this is across multiple areas so as per the tracking nature of this issue, this isn't something one person will likely work on.

[abhijeetbodas2001]

realm_filters: Handle a change of configured linkifiers.

I get that this is not a high priority, but whenever in the future ZT adds support for handling events sent after the linkifiers in the realm have changed, we should handle the new realm_linkifiers events, since the realm_filters event type has been deprecated in feature level 54. #995 has more context. Can you update the issue description?

[Ezio-Sarthak]

Thanks! Updated the issue description :)

[neiljp]

Also see zulip/zulip-mobile#3408 for a similar mobile tracking issue.