|
| 1 | +--- |
| 2 | +phase: 14.2-instamode-video-sync |
| 3 | +plan: 02 |
| 4 | +subsystem: ui |
| 5 | +tags: [typescript, vitest, websocket, vdo-ninja, video-sync, three-tier-delay] |
| 6 | + |
| 7 | +# Dependency graph |
| 8 | +requires: |
| 9 | + - phase: 14.2-01 |
| 10 | + provides: "VideoCompanion.cpp broadcastMeasuredDelay with syncMode JSON field, Instatalk channel setup" |
| 11 | +provides: |
| 12 | + - "Three-tier delay display in companion footer (measured/calculated/manual)" |
| 13 | + - "lastAutoSyncMode tracked separately for correct auto-restore" |
| 14 | + - "Syncing overlay with replace semantics for repeated updates" |
| 15 | + - "BufferDelayMessage.syncMode optional field and SyncMode type" |
| 16 | + - "21 new instamode-sync tests covering all transition scenarios" |
| 17 | +affects: [companion-page, video-sync] |
| 18 | + |
| 19 | +# Tech tracking |
| 20 | +tech-stack: |
| 21 | + added: [] |
| 22 | + patterns: |
| 23 | + - "Three-tier delay priority: manual > measured > calculated" |
| 24 | + - "Runtime syncMode validation with unknown-defaults-to-calculated" |
| 25 | + - "Overlay replace semantics: remove old before creating new" |
| 26 | + - "Separate lastAutoSyncMode from manualMode for correct switchToAuto restore" |
| 27 | + |
| 28 | +key-files: |
| 29 | + created: |
| 30 | + - companion/src/__tests__/instamode-sync.test.ts |
| 31 | + modified: |
| 32 | + - companion/src/types.ts |
| 33 | + - companion/src/ui.ts |
| 34 | + - companion/src/main.ts |
| 35 | + - companion/src/__tests__/video-sync.test.ts |
| 36 | + |
| 37 | +key-decisions: |
| 38 | + - "Global overlay over #main-area instead of per-tile: VDO.Ninja iframe is cross-origin, per-tile positioning impossible" |
| 39 | + - "syncMode runtime validation via explicit equality checks, not type assertion (T-14.2-06)" |
| 40 | + - "Unknown syncMode values silently ignored, lastAutoSyncMode retains current value (defaults to calculated)" |
| 41 | + |
| 42 | +patterns-established: |
| 43 | + - "Three-tier delay: manual slider overrides measured, measured overrides calculated" |
| 44 | + - "Auto-restore: switchToAuto reads lastAutoSyncMode to show correct mode label" |
| 45 | + - "Overlay replace: hideSyncingOverlay called before creating new overlay" |
| 46 | + |
| 47 | +requirements-completed: [VID-13] |
| 48 | + |
| 49 | +# Metrics |
| 50 | +duration: 4min |
| 51 | +completed: 2026-04-16 |
| 52 | +--- |
| 53 | + |
| 54 | +# Phase 14.2 Plan 02: Companion Three-Tier Delay Display Summary |
| 55 | + |
| 56 | +**Three-tier delay priority with measured/calculated/manual footer display, syncing overlay, and 21 new tests covering all mode transitions** |
| 57 | + |
| 58 | +## Performance |
| 59 | + |
| 60 | +- **Duration:** 4 min |
| 61 | +- **Started:** 2026-04-16T12:59:53Z |
| 62 | +- **Completed:** 2026-04-16T13:03:34Z |
| 63 | +- **Tasks:** 1 of 2 (Task 2 is human-verify checkpoint) |
| 64 | +- **Files modified:** 5 |
| 65 | + |
| 66 | +## Accomplishments |
| 67 | +- BufferDelayMessage extended with optional syncMode field; SyncMode type exported from types.ts |
| 68 | +- UI tracks lastAutoSyncMode separately from manualMode, enabling correct auto-restore after manual override |
| 69 | +- getDelayDisplayText shows "measured", "calculated", or "manual" instead of generic "auto" |
| 70 | +- showSyncingOverlay/hideSyncingOverlay with replace semantics for repeated measured updates (D-09) |
| 71 | +- onBufferDelay passes syncMode and triggers overlay only for measured mode with non-zero delay |
| 72 | +- Existing video-sync tests updated from "(auto)" to "(calculated)" -- all 109 companion tests pass |
| 73 | +- syncMode runtime validated: only 'measured'|'calculated' accepted, unknown defaults to 'calculated' (T-14.2-06) |
| 74 | + |
| 75 | +## Task Commits |
| 76 | + |
| 77 | +Each task was committed atomically: |
| 78 | + |
| 79 | +1. **Task 1 RED: Failing tests for three-tier delay, overlay, transitions** - `b341273` (test) |
| 80 | +2. **Task 1 GREEN: Implementation of types, UI state, overlay, main.ts wiring** - `452b90b` (feat) |
| 81 | + |
| 82 | +**Task 2:** Human verification checkpoint (pending) |
| 83 | + |
| 84 | +## Files Created/Modified |
| 85 | +- `companion/src/types.ts` - Added optional syncMode to BufferDelayMessage, exported SyncMode type |
| 86 | +- `companion/src/ui.ts` - lastAutoSyncMode state, getLastAutoSyncMode getter, three-tier getDelayDisplayText, showSyncingOverlay/hideSyncingOverlay, resetDelayState updated |
| 87 | +- `companion/src/main.ts` - onBufferDelay passes msg.syncMode, triggers overlay for measured mode |
| 88 | +- `companion/src/__tests__/instamode-sync.test.ts` - 21 new tests: three-tier priority, footer display, overlay create/remove/replace, transitions |
| 89 | +- `companion/src/__tests__/video-sync.test.ts` - Updated "(auto)" expectations to "(calculated)" |
| 90 | + |
| 91 | +## Decisions Made |
| 92 | +- Global overlay over #main-area instead of per-tile overlays -- VDO.Ninja iframe is cross-origin so per-tile positioning is impossible; all tiles share the same delay, making global overlay functionally equivalent |
| 93 | +- syncMode runtime validation uses explicit equality checks (`=== 'measured' || === 'calculated'`), not type assertion -- addresses threat T-14.2-06 |
| 94 | +- Overlay triggers only for measured mode with non-zero delay -- calculated mode is a theoretical estimate that doesn't need a visible sync phase |
| 95 | + |
| 96 | +## Deviations from Plan |
| 97 | + |
| 98 | +None - plan executed exactly as written. |
| 99 | + |
| 100 | +## Issues Encountered |
| 101 | +None |
| 102 | + |
| 103 | +## User Setup Required |
| 104 | +None - no external service configuration required. |
| 105 | + |
| 106 | +## Next Phase Readiness |
| 107 | +- Task 2 (human verification) pending -- requires building plugin, connecting to NINJAM server, and verifying end-to-end sync pipeline |
| 108 | +- All companion-side code is complete and tested; ready for integration verification |
| 109 | + |
| 110 | +## Self-Check: PASSED |
| 111 | + |
| 112 | +- All 5 created/modified files verified present on disk |
| 113 | +- Both commit hashes (b341273, 452b90b) verified in git log |
| 114 | +- All 109 companion tests pass (exit code 0) |
| 115 | + |
| 116 | +--- |
| 117 | +*Phase: 14.2-instamode-video-sync* |
| 118 | +*Completed: 2026-04-16* |
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