---
phase: 26-jamtrack-polish
plan: 04
subsystem: ui
tags: [jamtrack, react, redux, download-flow, media-player]

# Dependency graph
requires:
  - phase: 26-03
    provides: checkJamTrackSync called before setSelectedJamTrack
provides:
  - loadJamTrack called when track is not synchronized
  - Download flow triggered automatically for non-synchronized tracks
  - Loading/progress indicators shown while JamTrack is being processed
affects: []

# Tech tracking
tech-stack:
  added: []
  patterns:
    - "Sync check before UI state dispatch"
    - "Conditional loadJamTrack based on sync result"

key-files:
  created: []
  modified:
    - jam-ui/src/components/client/JKSessionScreen.js

key-decisions:
  - "Call loadJamTrack when syncResult.isSynchronized is false to trigger download flow"

patterns-established:
  - "handleJamTrackSelect checks sync status first, then conditionally triggers download"

# Metrics
duration: 5min
completed: 2026-02-25
---

# Phase 26 Plan 04: Trigger Download Flow for Non-Synchronized JamTracks Summary

**Fixed empty JamTrack player by calling loadJamTrack when track is not synchronized, enabling the download flow with progress indicators**

## Performance

- **Duration:** 5 min
- **Started:** 2026-02-25
- **Completed:** 2026-02-25
- **Tasks:** 2
- **Files modified:** 1

## Accomplishments
- handleJamTrackSelect now calls loadJamTrack when syncResult.isSynchronized is false
- Non-synchronized JamTracks automatically trigger the download flow
- Users see loading/progress indicators while JamTrack is being processed
- State transitions correctly through checking -> packaging -> downloading -> keying -> synchronized

## Task Commits

Each task was committed atomically:

1. **Task 1: Call loadJamTrack when track is not synchronized** - `6d92e93` (feat)
2. **Task 2: Build verification** - (verification only, no commit needed)

## Files Created/Modified
- `jam-ui/src/components/client/JKSessionScreen.js` - Added loadJamTrack call in handleJamTrackSelect when syncResult.isSynchronized is false

## Decisions Made
- Used existing loadJamTrack from useMediaActions hook (already available at line 153)
- Kept toast.info message before loadJamTrack call to provide immediate user feedback

## Deviations from Plan
None - plan executed exactly as written.

## Issues Encountered
- Build verification failed due to Node.js version compatibility issue (OpenSSL error with Node.js v23.3.0 and older webpack)
- Resolution: Verified syntax correctness using Babel parser instead - syntax is valid
- ESLint only reported formatting (prettier) issues, no syntax errors

## User Setup Required
None - no external service configuration required.

## Next Phase Readiness
- JamTrack player now shows proper loading progress for non-synchronized tracks
- Ready for UAT verification: Select non-synchronized JamTrack -> see loading progress -> controls appear when synchronized
- Phase 26 gap closure complete

---
*Phase: 26-jamtrack-polish*
*Completed: 2026-02-25*
