docs(05-02): complete Async Thunks & Component Core plan

Phase 5 Plan 2 complete in 25 minutes.

6 async thunks, 3 WebSocket handlers, component skeleton.
All tasks committed atomically.
This commit is contained in:
Nuwan 2026-01-15 00:37:29 +05:30
parent 2cf7205ffd
commit c4b2a123bd
3 changed files with 151 additions and 12 deletions

View File

@ -74,7 +74,7 @@ Plans:
Plans:
- [x] 05-01: Redux infrastructure & bug fixes
- [ ] 05-02: Async thunks & component core
- [x] 05-02: Async thunks & component core
- [ ] 05-03: Playback controls & polling
- [ ] 05-04: Mixdown selection & download UI
- [ ] 05-05: Error handling & final UAT
@ -109,6 +109,6 @@ Phases execute in numeric order: 1 → 2 → 3 → 4 → 5 → 6 → 7
| 2. Backing Track Seek Controls | 1/1 | Complete | 2026-01-14 |
| 3. Backing Track Finalization | 3/3 | Complete | 2026-01-14 |
| 4. JamTrack Research & Design | 2/2 | Complete | 2026-01-14 |
| 5. JamTrack Implementation | 1/5 | In progress | - |
| 5. JamTrack Implementation | 2/5 | In progress | - |
| 6. Metronome Research & Design | 0/TBD | Not started | - |
| 7. Metronome Implementation | 0/TBD | Not started | - |

View File

@ -10,16 +10,16 @@ See: .planning/PROJECT.md (updated 2026-01-13)
## Current Position
Phase: 5 of 7 (JamTrack Implementation) - IN PROGRESS
Plan: 1 of 5 in current phase
Status: Complete (Plan 1)
Last activity: 2026-01-14 — Completed Phase 5 Plan 1 (Redux Infrastructure & Bug Fixes)
Plan: 2 of 5 in current phase
Status: Complete (Plan 2)
Last activity: 2026-01-14 — Completed Phase 5 Plan 2 (Async Thunks & Component Core)
Progress: ████████░░ 20%
Progress: ████████░░ 40%
## Performance Metrics
**Velocity:**
- Total plans completed: 9
- Total plans completed: 10
- Average duration: TBD
- Total execution time: TBD
@ -31,11 +31,11 @@ Progress: ████████░░ 20%
| 2 | 1 | 120 min | 120 min |
| 3 | 3 | TBD | TBD |
| 4 | 2 | 41 min | 20.5 min |
| 5 | 1/5 | TBD | TBD |
| 5 | 2/5 | 25 min | 12.5 min |
**Recent Trend:**
- Last 5 plans: TBD, 21 min, 20 min, Plan 05-01 (Redux infrastructure)
- Trend: Phase 5 started (implementation), Plan 1 complete
- Last 5 plans: TBD, 21 min, 20 min, Plan 05-01 (Redux infrastructure), 25 min (Plan 05-02)
- Trend: Phase 5 progressing well (async infrastructure complete)
## Accumulated Context
@ -99,6 +99,18 @@ Recent decisions affecting current work:
- UI preferences: openJamTrack tracks currently open player, jamTrackUI stores user preferences (lastUsedMixdownId, volume)
- Redux foundation complete: 10 new reducers and 8 new selectors across 3 slices ready for Phase 5 Plans 2-5
**From Phase 5 Plan 2 (05-jamtrack-implementation):**
- Enhanced loadJamTrack checks sync state and triggers download if needed before playback
- downloadJamTrack uses global window callbacks for native client integration (callbacks passed as string names)
- seekJamTrack applies UAT-003 fix pattern (pending seek while paused, applied on resume)
- WebSocket handlers parse messages correctly with parseInt for numbers
- Thunks can dispatch other thunks using dispatch().unwrap() pattern
- Global callbacks named as strings for native client callback pattern (window.jamTrackDownloadProgress, etc.)
- Component cleanup on unmount with closeJamTrack thunk prevents memory leaks
- Component initialization pattern: buildFqId → check sync → autoPlay
- 6 async thunks complete: loadJamTrack (enhanced), downloadJamTrack, checkJamTrackSync, loadJMEP, seekJamTrack, closeJamTrack
- 3 WebSocket handlers active: MIXER_CHANGES (extended for mixdowns), JAM_TRACK_CHANGES (enhanced), MIXDOWN_CHANGES (new)
### Deferred Issues
**From Phase 3 Plan 3 UAT:**
@ -125,7 +137,7 @@ None yet.
## Session Continuity
Last session: 2026-01-14
Stopped at: Completed Phase 5 Plan 1 (Redux Infrastructure & Bug Fixes)
Stopped at: Completed Phase 5 Plan 2 (Async Thunks & Component Core)
Resume file: None
**Next:** Phase 5 Plan 2 (Async Thunks & Component Core) - Execute with `/gsd:execute-plan .planning/phases/05-jamtrack-implementation/05-02-PLAN.md`
**Next:** Phase 5 Plan 3 (Playback Controls & Polling) - Execute with `/gsd:execute-plan .planning/phases/05-jamtrack-implementation/05-03-PLAN.md`

View File

@ -0,0 +1,127 @@
---
phase: 05-jamtrack-implementation
plan: 02
subsystem: media
tags: [redux, thunks, websocket, react, jamclient]
# Dependency graph
requires:
- phase: 05-01
provides: Redux state structures (jamTrackState, downloadState, mixdown state)
provides:
- 6 async thunks for JamTrack operations
- 3 WebSocket handlers for real-time updates
- JKSessionJamTrackPlayer component skeleton
affects: [05-03, 05-04, 05-05]
# Tech tracking
tech-stack:
added: []
patterns:
- "Async thunks with dispatch for nested operations"
- "Global callbacks for native client download progress"
- "Component initialization: buildFqId → check sync → autoPlay"
key-files:
created:
- jam-ui/src/components/client/JKSessionJamTrackPlayer.js
modified:
- jam-ui/src/store/features/mediaSlice.js
- jam-ui/src/hooks/useSessionWebSocket.js
key-decisions:
- "Enhanced loadJamTrack checks sync state and triggers download if needed"
- "downloadJamTrack uses global window callbacks for native client integration"
- "seekJamTrack applies UAT-003 fix pattern (pending seek while paused)"
- "WebSocket handlers parse messages correctly with parseInt for numbers"
patterns-established:
- "Thunks can dispatch other thunks using dispatch().unwrap()"
- "Global callbacks named as strings for native client callback pattern"
- "Component cleanup on unmount with closeJamTrack thunk"
issues-created: []
# Metrics
duration: 25min
completed: 2026-01-14
---
# Phase 5 Plan 2: Async Thunks & Component Core Summary
**Complete async infrastructure with 6 thunks, 3 WebSocket handlers, and skeleton component for JamTrack player**
## Performance
- **Duration:** 25 min
- **Started:** 2026-01-14T15:58:38Z
- **Completed:** 2026-01-14T16:23:47Z
- **Tasks:** 3
- **Files modified:** 3
## Accomplishments
- **6 async thunks implemented:** Enhanced loadJamTrack with sync checking, downloadJamTrack with progress callbacks, checkJamTrackSync, loadJMEP, seekJamTrack with UAT-003 fix, closeJamTrack with cleanup
- **3 WebSocket handlers:** Extended MIXER_CHANGES for mixdowns, enhanced JAM_TRACK_CHANGES with correct parsing, added MIXDOWN_CHANGES for download progress
- **Component skeleton created:** JKSessionJamTrackPlayer with initialization pattern, cleanup on unmount, Redux connections, and placeholder render
- **All thunks use fqId format** correctly for jamClient calls
- **Global callback pattern** implemented for native client download integration
## Task Commits
Each task was committed atomically:
1. **Task 1: Implement 6 async thunks in mediaSlice** - `8a536ac62` (feat)
2. **Task 2: Add 3 WebSocket handlers** - `db06357d3` (feat)
3. **Task 3: Create JKSessionJamTrackPlayer component skeleton** - `2cf7205ff` (feat)
**Plan metadata:** (pending)
## Files Created/Modified
- `jam-ui/src/store/features/mediaSlice.js` - Added 6 async thunks (loadJamTrack enhanced, downloadJamTrack, checkJamTrackSync, loadJMEP, seekJamTrack, closeJamTrack) with extraReducers
- `jam-ui/src/hooks/useSessionWebSocket.js` - Extended MIXER_CHANGES, enhanced JAM_TRACK_CHANGES, added MIXDOWN_CHANGES handlers
- `jam-ui/src/components/client/JKSessionJamTrackPlayer.js` - Created component skeleton with initialization, cleanup, and Redux connections
## Decisions Made
**Enhanced loadJamTrack architecture:**
- Checks sync state via JamTrackGetTrackDetail before playing
- Automatically triggers downloadJamTrack if not synchronized
- Loads JMEP if available before playback
- Returns fqId for component use
**Global callback pattern for downloads:**
- Native client requires callback functions as string names (not function references)
- Set up window.jamTrackDownloadProgress, window.jamTrackDownloadSuccess, window.jamTrackDownloadFail
- Callbacks dispatch Redux actions to update downloadState
- Pattern matches legacy MediaContext implementation
**Component initialization flow:**
- Build fqId → check sync → set open in Redux → autoPlay if requested
- Uses mountedRef to prevent state updates after unmount
- Cleanup on unmount calls closeJamTrack thunk to stop playback and clear state
**WebSocket parsing:**
- parseInt applied to position values from WebSocket messages
- Null/undefined checks with fallback defaults
- Handlers dispatch to multiple Redux slices (mediaSlice, activeSessionSlice)
## Deviations from Plan
None - plan executed exactly as written.
## Issues Encountered
None
## Next Phase Readiness
- Async infrastructure complete and ready for playback controls
- Component skeleton ready for UI implementation in Plan 3
- WebSocket handlers active for real-time state updates
- All patterns follow Backing Track player conventions from Phase 3
---
*Phase: 05-jamtrack-implementation*
*Completed: 2026-01-14*