Accept or decline an invite from invitations' list

[alfogrillo]

As a user that has been invited to a new conversation I want to join a room to read messages & chat w. other users.

• I can accept / decline an invite

Designs

• Invite list

ACs

• When the user taps on "Accept" the client join the room calling one of the join API
  • After accepting (aka joining) the user should navigate to the new room opening the timeline
    • The timeline is pushed on top of the "Invites" screen
• When a user declines an invitation the client should call the "Leave" API instead
  • A full screen alert will ask for a confirmation before the user declines the invite
• An invite shouldn't be rendered in the "invites list" anymore after accepting/declining it
• In case of errors show a full screen alert
  • Title: "Error" (key common_error)
  • Message: "Sorry, an error occurred" (key error_unknown)
  • Button: "OK" (key action_ok)

Matrix APIs

Join (Rust PR)

• POST /_matrix/client/v3/join/{roomIdOrAlias}
• POST /_matrix/client/v3/rooms/{roomId}/join

Leave (Rust PR)

• POST /_matrix/client/v3/rooms/{roomId}/leave

Tasks

Preview Give feedback

1. Update the account data event m.direct after accepting an invite matrix-org/matrix-rust-sdk#1676
   Z-ElementX-Alpha enhancement +2
   
2. Expose room joining api to UniFFI matrix-org/matrix-rust-sdk#1653
   Z-ElementX-Alpha enhancement +2
   
3. Accept or decline an invite from invitations' list vector-im/element-x-android#106
   T-Enhancement Team: Element X Feature +2
   
4. Accept or decline an invite from invitations' list vector-im/element-x-ios#621
   T-Enhancement Team: Element X Feature +2