Files
Mikkeli Matlock d0427219a2 docs(03): complete overlay refactor phase
Phase 3 verified: 9/9 must-haves, 6/6 OVRL requirements satisfied.
OverlayService wrapper, staleness detection, error surfacing all verified.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-02-11 19:35:15 +09:00

9.4 KiB

phase, verified, status, score, re_verification
phase verified status score re_verification
03-overlay-refactor 2026-02-11T10:29:03Z passed 9/9 must-haves verified false

Phase 3: Overlay Refactor Verification Report

Phase Goal: Fix overlay data staleness and communication reliability issues Verified: 2026-02-11T10:29:03Z Status: PASSED Re-verification: No - initial verification

Goal Achievement

Observable Truths

# Truth Status Evidence
1 Overlay receives continuous GPS updates without going stale VERIFIED OverlayProvider subscribes to GpsDataManager.dataStream and forwards every GPS tick via _pushDataToOverlay (lines 55-59)
2 Overlay displays dashes when data is more than 10 seconds old (3s dim threshold) VERIFIED Staleness timer checks every 1s shows dashes after STALENESS_DASH_THRESHOLD (10s) dims at STALENESS_DIM_THRESHOLD (3s) using opacity
3 Overlay creation failures surface to user via snackbar VERIFIED OverlayProvider calls onError callback on permission denial (line 82) and creation failure (line 112) SpeedometerScreen shows SnackBar (lines 91-97)
4 OverlayService encapsulates all flutter_overlay_window platform calls VERIFIED All platform calls isolated in OverlayService OverlayProvider has zero direct FlutterOverlayWindow usage
5 Heartbeat timer only runs when overlay active AND app backgrounded VERIFIED Timer checks both _isInBackground AND overlay.isOverlayActive (speedometer_screen.dart line 126)
6 Overlay shows current speed and heading that matches main app display VERIFIED OverlayProvider pushes OverlayMessage.updateDisplay with speedText heading unitIndex themeIndex on every GPS tick and settings change
7 Permission errors show snackbar with Settings action button VERIFIED _handleOverlayError creates SnackBarAction for OverlayError.permission that calls openAppSettings() (lines 78-81)
8 Recovery from staleness is immediate snap-back (no animation) VERIFIED Staleness opacity applied directly via color.withValues(alpha:) no AnimatedOpacity used (overlay_screen.dart lines 173 188 216 229)
9 GPS grace period timer (30s) created on overlay close VERIFIED _gracePeriodTimer starts on _handleOverlayClose (line 251) cancelled on showOverlay (line 74)

Score: 9/9 truths verified

Required Artifacts

Artifact Expected Status Details
lib/services/overlay_service.dart Platform channel wrapper with retry logic VERIFIED 97 lines methods: showOverlay closeOverlay shareData isActive overlayListener checkPermission. RetryOptions with 3 attempts and 200ms delay
lib/models/overlay_message.dart Timestamp field with serialization VERIFIED timestamp field (line 13) auto-populated in factories (lines 49 57 65) serialized as millisecondsSinceEpoch (line 80) deserialized with fallback (lines 96-98)
lib/config/overlay_constants.dart Staleness thresholds (3s dim 10s dash) VERIFIED STALENESS_DIM_THRESHOLD = 3s (line 39) STALENESS_DASH_THRESHOLD = 10s (line 42) STALENESS_DIM_OPACITY = 0.5 (line 45) STALENESS_CHECK_INTERVAL = 1s (line 48)
lib/config/timing_constants.dart GPS_GRACE_PERIOD constant VERIFIED GPS_GRACE_PERIOD = 30s (line 18)
lib/providers/overlay_provider.dart OverlayService integration with error callback VERIFIED OverlayService dependency (line 16) onError callback field (line 34) permission checks (line 79) verified creation (lines 105-114) grace period timer (lines 74 250-254)
lib/screens/overlay_screen.dart Staleness detection timer and UI VERIFIED _stalenessCheckTimer (line 27) _lastUpdateTime tracking (line 83) staleness monitoring (lines 105-116) opacity calculation (lines 125-127) opacity applied to all display elements
lib/screens/speedometer_screen.dart Error snackbar surfacing VERIFIED onError callback registration (line 35) _handleOverlayError method (lines 69-98) SnackBar with Settings action for permission errors
lib/main.dart OverlayService in provider tree VERIFIED OverlayService registered (line 20) injected into OverlayProvider constructor (line 28)
pubspec.yaml retry package dependency VERIFIED retry 3.1.2 present
From To Via Status Details
OverlayProvider OverlayService Constructor injection all platform calls delegated WIRED _overlayService field (line 16) used in showOverlay (lines 79 94 105) closeOverlay (line 133) shareData (line 167) overlayListener (line 180) isActive (line 221)
OverlayProvider SpeedometerScreen onError callback for snackbar surfacing WIRED onError field set by SpeedometerScreen (speedometer_screen.dart line 35) called on permission/creation errors (overlay_provider.dart lines 82 112)
OverlayScreen OverlayMessage.timestamp Reads timestamp for staleness calculation WIRED _lastUpdateTime = message.timestamp (line 83) age calculated in staleness check (line 109) and build (line 125)
OverlayScreen OverlayConfig constants Uses staleness thresholds for visual feedback WIRED STALENESS_CHECK_INTERVAL (line 106) STALENESS_DASH_THRESHOLD (line 110) STALENESS_DIM_THRESHOLD (line 126) STALENESS_DIM_OPACITY (line 127)
main.dart OverlayService Provider registration and injection WIRED Provider OverlayService created (line 20) passed to OverlayProvider constructor (line 28)
OverlayService flutter_overlay_window Platform channel delegation with retry WIRED showOverlay (lines 24 38) closeOverlay (line 57) shareData (line 71) isActive (line 81) overlayListener (line 90)
OverlayService retry package RetryOptions for showOverlay closeOverlay WIRED RetryOptions configured (lines 10-12) used in showOverlay (line 22) and closeOverlay (line 55)
GpsDataManager OverlayProvider Stream subscription for continuous updates WIRED _gpsSubscription listens to dataStream (line 55) calls _pushDataToOverlay on each tick (line 57)

Requirements Coverage

Requirement Status Blocking Issue
OVRL-01: Continuous debounced data updates SATISFIED GPS stream forwarded on every tick via _gpsSubscription.listen to _pushDataToOverlay
OVRL-02: Overlay errors surfaced to user SATISFIED onError callback mechanism connects OverlayProvider to SpeedometerScreen for snackbar display
OVRL-03: Overlay creation verified SATISFIED showOverlay checks return value from OverlayService (which calls isActive after platform showOverlay)
OVRL-04: Messages include timestamp SATISFIED OverlayMessage.timestamp field auto-populated and serialized as millisecondsSinceEpoch
OVRL-05: Overlay displays dashes when stale SATISFIED Staleness timer shows dashes after 10s (STALENESS_DASH_THRESHOLD) dims at 3s (STALENESS_DIM_THRESHOLD)
OVRL-06: OverlayService encapsulates platform calls SATISFIED All FlutterOverlayWindow calls isolated in OverlayService zero direct usage in OverlayProvider

Anti-Patterns Found

File Line Pattern Severity Impact
lib/screens/overlay_screen.dart 73 Direct FlutterOverlayWindow.overlayListener usage in overlay isolate Info Expected - overlay screen runs in separate isolate and must use direct platform channel for receiving messages
lib/screens/overlay_screen.dart 257 268 Direct FlutterOverlayWindow calls in long press handler Info Expected - overlay screen cannot use OverlayService (separate isolate) must use direct platform channel

No blocker anti-patterns found.

Human Verification Required

None required. All success criteria are structurally verifiable through code analysis.

Optional manual testing to confirm runtime behavior:

  1. Launch overlay - verify it appears and shows current speed/heading
  2. Close main app to background - verify overlay continues receiving GPS updates
  3. Wait 3 seconds without GPS movement - verify overlay dims speed display
  4. Wait 10 seconds without GPS movement - verify overlay shows dashes
  5. Move to trigger GPS update - verify overlay immediately shows new speed (no fade animation)
  6. Deny overlay permission - verify snackbar appears with Settings button
  7. Press Settings button - verify app settings page opens
  8. Close overlay while app backgrounded - verify GPS continues for 30 seconds (grace period)

Summary

Phase 3 goal ACHIEVED.

All 6 OVRL requirements satisfied:

  • OVRL-01: Continuous GPS updates via stream subscription
  • OVRL-02: Error surfacing via onError callback to SnackBar
  • OVRL-03: Verified overlay creation via isActive check
  • OVRL-04: Timestamp field in OverlayMessage
  • OVRL-05: Two-stage staleness (3s dim 10s dashes)
  • OVRL-06: OverlayService encapsulates all platform calls

Key improvements delivered:

  1. Overlay communication is reliable (retry logic + verification)
  2. Staleness detection provides clear visual feedback
  3. Errors surface to user with actionable guidance
  4. GPS grace period infrastructure ready for Phase 4
  5. Clean separation of concerns (OverlayService isolates platform code)

No gaps no blockers ready to proceed to Phase 4.

NOTE: ROADMAP.md incorrectly states "2 seconds" for success criterion #2. The user explicitly decided on 3 seconds in CONTEXT.md and plan must-haves. Code correctly implements 3s dim / 10s dash thresholds per user decision.


Verified: 2026-02-11T10:29:03Z Verifier: Claude (gsd-verifier)