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Mobile App Integration Progress - Phase 2+3

Date: 2025-12-12
Status: Trust Attestation + Offline Queue Complete ✅

Completed in this Session

1. Trust Attestation Screen ✅

  • Created TrustAttestationScreen.tsx with full UI
  • Search for members by DID or name
  • Slider for trust score (0-100%)
  • Context/reason textarea
  • Submit attestation to ICN gateway
  • Success/error feedback

2. ICN Context Provider ✅

  • Created ICNContext.tsx for client access
  • Wrapped app with ICNProvider
  • Enables useICNContext() hook pattern

3. Navigation Integration ✅

  • Added TrustAttestation route to RootStackParamList
  • Added Trust button (🤝) to HomeScreen quick actions
  • Registered screen in Stack.Navigator
  • Added History and Proposal route types

4. TypeScript Fixes ✅

  • Exported useTrustScore and useTrustNetwork from SDK
  • Exported useTrustAttestation hook
  • Fixed client null type assertions across all screens
  • Rebuilt SDK with new exports

5. Offline Queue Support ✅

  • Created useTrustAttestation hook with automatic queuing
  • Added 'trust_attestation' to QueuedOperation types
  • Added attestTrust alias method to ICNMobileClient
  • Updated TrustAttestationScreen to use hook
  • Automatic queuing on network errors
  • Uses existing QueueManager infrastructure

Architecture Overview

User Flow:
1. HomeScreen → Click "Trust" button
2. TrustAttestationScreen opens
3. Search for member (optional pre-fill from params)
4. Set trust score with slider
5. Add context/reason
6. Submit → useTrustAttestation hook
7. If online: POST /v1/trust/attest
8. If offline: Queue operation for later sync
9. Success toast → Navigate back

Offline Queue:
- Network error → auto-enqueue operation
- QueueManager persists to storage
- Auto-retry on reconnect
- User can view pending operations via useQueue hook

Context Hierarchy:
App
└── ICNProvider (client)
    └── NavigationContainer
        └── Stack.Navigator
            └── Screens (access client via useICNContext)

Test Results

  • Rust Tests: 1134+ passing ✅
  • SDK Tests: 86/86 passing ✅
  • TypeScript: Clean compilation ✅

Remaining Work

Phase 3: Trust Graph Visualization (NOT STARTED)

  • Trust network visualization component
  • D3.js or react-native-svg graph
  • Show direct and transitive trust
  • Interactive node exploration
  • Trust score badge on member profiles

Additional Features

  • Wire event listeners for auto-notifications
  • Real-time trust updates via WebSocket
  • Trust metrics dashboard
  • Trust history/timeline view
  • E2E testing for trust flows

Technical Notes

  • All hooks now properly typed with ICNMobileClient (not null)
  • Trust attestation uses REST POST (not WebSocket)
  • Context provider pattern allows clean dependency injection
  • Quick actions grid scales to 5 buttons (Send/Receive/Scan/Vote/Trust)
  • QueueManager handles offline operations transparently
  • Network error detection triggers automatic queuing

Gateway API Used

POST /v1/trust/attest
Body: {
  target_did: string,
  score: number,      // 0.0-1.0
  context?: string
}
Response: {
  success: boolean,
  message?: string
}

GET /v1/trust/score/:did
Response: {
  score: number,
  attestation_count: number
}

GET /v1/trust/network/:did?depth=2
Response: {
  nodes: Array<{ did, trust_score, distance }>,
  edges: Array<{ from, to, score, created_at, labels }>
}

SDK API Changes

New Hooks

// Trust score for a DID
useTrustScore(client, did)

// Trust network graph data
useTrustNetwork(client, did, depth)

// Create attestation with offline support
useTrustAttestation(client)
  .attest({ targetDid, score, context })

Client Methods

// Get trust score
client.getTrustScore(did)

// Get trust network
client.getTrustNetwork(did, depth)

// Create attestation (two aliases)
client.createTrustAttestation(to, score, memo)
client.attestTrust(targetDid, score, context)

// Queue operations
client.queueOperation(type, data)
client.getQueuedOperations()
client.clearFailedOperations()

Next Steps

  1. ✅ DONE: Trust attestation UI
  2. ✅ DONE: Offline queue for trust attestations
  3. Add trust graph visualization component
  4. Wire up real-time trust updates via WebSocket
  5. Add trust score display on member profiles
  6. Integrate with governance weight calculations
  7. Add trust metrics to HomeScreen

Commits:

  • 7f0cb1a - feat(mobile): add trust attestation screen and ICN context
  • c7387d1 - feat(mobile): add offline queue support for trust attestations
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