[Story] Push notifications for polls

[alfogrillo]

Description

• As a user
• I want to receive notification for polls
• So that I'm aware of new started polls

Acceptance criteria

• The user receives a push notification for each "poll started" event in group and direct rooms
  • The above happens only if the Group chat / Direct chat notification settings are set to All messages
  • Notification message: Poll: {poll_question}
• Notifications should work both for encrypted and plain rooms
  • The rust sdk should apply already the push rules automatically for encrypted rooms
• Polls push rules should be in sync with the ones of normal messages (see the table below)
• Element X should align poll rules with the one of messages whenever a message push rule changes (see the table below).
• In case of inconstancies the user should see this screen.
  • A tap on the "Continue" button should sync all the rules. Poll rules should copy the messages one (see the table below)

Poll rules	Align to
.m.rule.poll_start_one_to_one .org.matrix.msc3930.rule.poll_start_one_to_one	.m.rule.room_one_to_one
.m.rule.poll_start .org.matrix.msc3930.m.rule.poll_start	.m.rule.message

Size estimate

None

Dependencies

• None

Preconditions

• Polls push rules on the home server. Apparently matrix.org don't have them.

Sign-off

Android

• Design sign-off on completion
• QA sign-off on completion
• Product sign-off on completion

iOS

• Design sign-off on completion
• QA sign-off on completion
• Product sign-off on completion

Out of scope

• TBD

Open questions

• Can we ignore "poll end" events? (we don't show them in the timeline, and we couldn't jump to the start event when clicking on the notification, so does it make sense to display notifications for them?)
  • A: "poll end" events will be addressed together with poll history later
• Push rules sync between poll rules and "regular" rules: do we really have to expose this to the user as it was done in legacy clients? Ideally this should be user transparent.
  • A: EX already has a screen to warn the user about "inconsistencies" on push rules (without mentioning any particular rule). polls rules should be aligned using the same screen in case of problems.

Subtasks

Android

Preview Give feedback

1. Display poll notifications in the notification drawer vector-im/element-x-android#1467
   +0
   

iOS

Preview Give feedback

1. Refine poll push rule error handling vector-im/element-x-ios#1852
   +0
   
2. "Poll start" event push notification vector-im/element-x-ios#1819
   +0
   

Other

Preview Give feedback

1. ffi: Add push notification support for unstable m.poll.start matrix-org/matrix-rust-sdk#2604
   +0
   
2. ffi: refine NotificationSettingsError type matrix-org/matrix-rust-sdk#2658
   +0
   
3. Feature: add API for setting underride push rule's actions matrix-org/matrix-rust-sdk#2644
   +0
   

[julioromano]

Can we ignore "poll end" events?

@VolkerJunginger wanted to have a notification on poll end. This means we can't ignore them. Though, with the current state of the SDK, I don't think we can scroll the timeline all the way to the start event when clicking on the "end poll" notification. What d'you think @alfogrillo ?

We definitely can manage to get push notifications for "poll ended" events.
This would require the sync of "poll end" push rules with the ones of normal messages (4 more lines in the table above).
But like you said we don't have a working "go to" navigation in the timeline atm.
To be fair I think this a general problem with push notifications and links and isn't limited to "poll end" events.