Fix/dreamsync bugs

[coodos]

Description of change

Issue Number

closes #370
closes #369
closes #368

Type of change

• Breaking (any change that would cause existing functionality to not work as expected)
• New (a change which implements a new feature)
• Update (a change which updates existing functionality)
• Fix (a change which fixes an issue)
• Docs (changes to the documentation)
• Chore (refactoring, build scripts or anything else that isn't user-facing)

How the change has been tested

Change checklist

• I have ensured that the CI Checks pass locally
• I have removed any unnecessary logic
• My code is well documented
• I have signed my commits
• My code follows the pattern of the application
• I have self reviewed my code

Summary by CodeRabbit

• Bug Fixes
  • Corrected profile links in notifications to point to /profile/{ename}.
  • Prevents creation of duplicate direct message threads between two users.
  • Improves reliability of initial messages after a new chat is created.
• Refactor
  • Streamlined mutual chat creation and detection across notification and consent flows to reduce errors and ensure private chats are ready before messaging.
  • Optimized private chat lookup to more efficiently find existing two‑member chats.

[coderabbitai]

Caution

Review failed

The pull request is closed.

Walkthrough

Refactors mutual chat creation across services to return { chat, wasCreated } and introduces a 15-second delay before messaging when a chat is newly created. Adds a 2-member DM fast-path and pre-check in group lookup/creation to avoid duplicate chats. Updates link building in notifications and expands logging.

Changes

Cohort / File(s)	Summary
Mutual chat return-shape refactor and delayed messaging platforms/dreamsync-api/src/services/ConsentService.ts, platforms/dreamsync-api/src/services/MatchNotificationService.ts	Change findOrCreateMutualChat to return { chat, wasCreated }; update call sites to unpack values and conditionally wait 15s before sending messages; standardize null/error returns to { chat: null, wasCreated: false }; add logging and JSDoc.
DM lookup fast-path and creation pre-check platforms/dreamsync-api/src/services/GroupService.ts	Add optimized 2-member private DM search using name prefix and exact-member match; filter by isPrivate; in createGroup, pre-check for existing DM and return it to skip creation.
Notification link tweak .../MatchNotificationService.ts	Update convertEnameToLinks to use /profile/{ename} instead of /user/{ename}.

Sequence Diagram(s)

sequenceDiagram
  autonumber
  participant Svc as Service (Consent/MatchNotification)
  participant GroupSvc as GroupService
  participant Store as Data Store
  participant Msg as Messaging

  Note over Svc: findOrCreateMutualChat(targetUserId)
  Svc->>GroupSvc: findGroupByMembers([me, target])
  alt Existing DM found
    GroupSvc-->>Svc: { chat, wasCreated: false }
  else Not found
    Svc->>GroupSvc: createGroup(private, 2 members)
    GroupSvc->>GroupSvc: pre-check existing DM
    alt DM exists
      GroupSvc-->>Svc: { chat: existing, wasCreated: false }
    else Create new
      GroupSvc->>Store: insert group
      Store-->>GroupSvc: group
      GroupSvc-->>Svc: { chat: new, wasCreated: true }
    end
  end

  alt wasCreated == true
    Note over Svc: Wait 15s to ensure chat readiness
  end
  Svc->>Msg: send initial messages to chat

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sequenceDiagram
  autonumber
  participant Client as Caller (Any Service)
  participant GroupSvc as GroupService
  participant DB as DB

  Note over Client,GroupSvc: findGroupByMembers([A,B])
  alt Exactly 2 members
    GroupSvc->>DB: query private groups with DreamSync Chat prefix
    DB-->>GroupSvc: candidate groups
    GroupSvc->>GroupSvc: filter exact 2-member match
    GroupSvc-->>Client: DM or null
  else Other sizes
    GroupSvc->>DB: query private groups by members
    DB-->>GroupSvc: result
    GroupSvc-->>Client: group or null
  end

  Note over Client,GroupSvc: createGroup(private, [A,B])
  GroupSvc->>GroupSvc: pre-check findGroupByMembers([A,B])
  alt Found
    GroupSvc-->>Client: existing group
  else Not found
    GroupSvc->>DB: insert new group
    DB-->>GroupSvc: group
    GroupSvc-->>Client: new group
  end

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Estimated code review effort

🎯 4 (Complex) | ⏱️ ~60 minutes

Poem

I thump my paw: “Delay, delay!”
Fifteen ticks so chats won’t stray.
Two-heart tunnels, swift and neat—
Find before we forge the seat.
Links hop paths to profiles new,
Burrows tidy, messages through.
DreamSync hums—carrots for the crew! 🥕✨

✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch fix/dreamsync-bugs

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📜 Recent review details

Configuration used: CodeRabbit UI

Review profile: CHILL

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 9bf39c0 and cd1801a.

📒 Files selected for processing (3)

• platforms/dreamsync-api/src/services/ConsentService.ts (12 hunks)
• platforms/dreamsync-api/src/services/GroupService.ts (2 hunks)
• platforms/dreamsync-api/src/services/MatchNotificationService.ts (10 hunks)

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