[Spaces] / Read Only MVP Phase 1

[BillCarsonFr]

See matrix-org/matrix-doc#1772
and room types matrix-org/matrix-doc#1840

-> Basic support for spaces. As a user I should be able to receive an invite, preview the space content and join (or discard invite). Support leave.

SDK

• Database
  • persist room type
  • New SpaceSummaryEntity
  • Database migration  
• Create Space Service
  • Create Space
  • Get Space from Id
  • Peek Space from id or alias
    - [ ] Detect/Protect from space subspace cycle
  • Get space summary (detached + live)
  • Join Space (and default rooms of that space)
• Space Model
  • Add room to space
  • Remove room
  • Add subspace
  • Set child as default / add order
• Support room type (messaging / space)

UI

• Debug commands to create space / add child
• Add Lab flag in settings to enable space feature
• Show user spaces in left drawer (invites + member)
• Click on invite to open space preview
  • Add Space Preview Activity / fragments / model
  • 0 depth support
  • subspace display support (simple max depth)
  • Join Space
    - [ ] Discard Invite
    - [ ] Manage edge cases (failed to peek?)
    ~~ - [ ] Integrate new Space API for preview~~
• Handle current space selection
  • filter visible rooms
  • filter visible DM
  • Update home toolbar
  • [ ] Notification badge
  • [ ] Handle All spaces case
• [ ] New FAB buttons behaviour
  • [ ] In room tab should open explore space rooms screen
  • [ ]~~ In DM tab, modify a bit existing screen to display footer 'Looking for someone outside of ? Switch space or Invite them'~~

Issues

• [ ] Only show root spaces on left drawer (avoid to have both parent and child at same level)

[progserega]

Hello!
Standart use case for users: create group of his contacts. It is create personal group, with not show anybody. But...
But I try create private space on https://riots.im/adhoc/spaces3 and can not simply add my private chats to this space... I can add only room or invite users. After invate users - they must join to my PRIVATE space. What is this?! What changes from community?!
Why you do not create simply grouping of private chats and rooms. I want simply have private "groups":

1. work
2. home
3. friends

Why my friends need join to my private spaces?! I do not understand...

[t3chguy]

can not simply add my private chats to this space

This is a feature which simply has not had UX designed for it but is planned.

[progserega]

This is a feature which simply has not had UX designed for it but is planned.

I hope this is will be accepted. 👍