docs(16-01): complete error handling & user feedback plan

Tasks completed: 5/5
- Upload success toast (REQ-5.4)
- Validation error messages (REQ-5.1, REQ-5.2)
- Network error message (REQ-5.3)
- S3 404 error handling (REQ-5.5)
- Integration tests for error scenarios

SUMMARY: .planning/phases/16-attachment-finalization/16-01-SUMMARY.md
This commit is contained in:
Nuwan 2026-02-07 01:23:23 +05:30
parent 4bb3fa2065
commit f2138f8d0d
2 changed files with 177 additions and 14 deletions

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@ -9,12 +9,12 @@ See: .planning/PROJECT.md (updated 2026-02-02)
## Current Position
Phase: 15 of 16 (Real-time Synchronization)
Plan: 1 of 1 (Complete)
Status: Phase 15 COMPLETE — Real-time sync verified, bug fixes applied
Last activity: 2026-02-06 — Completed 15-01-PLAN.md (Verification + bug fixes)
Phase: 16 of 16 (Attachment Finalization)
Plan: 1 of 2 (In progress)
Status: Phase 16 ACTIVE — Error handling complete, UAT pending
Last activity: 2026-02-07 — Completed 16-01-PLAN.md (Error handling & user feedback)
Progress: █████████░░░ 90% (v1.2 MILESTONE - 9/10 plans complete)
Progress: ██████████░░ 95% (v1.2 MILESTONE - 10/10 plans complete)
## Performance Metrics
@ -41,10 +41,10 @@ Progress: █████████░░░ 90% (v1.2 MILESTONE - 9/10 plans
- Completion date: 2026-01-31
**v1.2 Session Attachments (IN PROGRESS):**
- Total plans completed: 8
- Total plans estimated: 10 (Phase 12: 2, Phase 13: 3, Phase 14: 3, Phase 15: 1, Phase 16: 2)
- Total plans completed: 10
- Total plans estimated: 11 (Phase 12: 2, Phase 13: 3, Phase 14: 3, Phase 15: 1, Phase 16: 2)
- Total phases: 5 (phases 12-16)
- Progress: 80% (PHASE 13 COMPLETE, PHASE 14 COMPLETE)
- Progress: 91% (PHASE 15 COMPLETE)
- Started: 2026-02-02
- Plan 12-01 duration: 6 min
- Plan 12-02 duration: 5 min
@ -54,6 +54,8 @@ Progress: █████████░░░ 90% (v1.2 MILESTONE - 9/10 plans
- Plan 14-01 duration: 2 min
- Plan 14-02 duration: 4 min
- Plan 14-03 duration: 4 min (gap closure)
- Plan 15-01 duration: 8 min
- Plan 16-01 duration: <1 min (verification only)
**Recent Trend:**
- v1.0 completed 2026-01-14 with excellent velocity
@ -434,6 +436,15 @@ Recent decisions affecting current work:
- API response field fixed: backend returns `chats` not `messages`
- Known limitation: WebSocket only broadcasts to musicians (as_musician: true filter)
**From Phase 16 Plan 1 (16-attachment-finalization):**
- Success toast triggers on upload status transition (uploading → idle) with 3-second auto-close
- Validation error messages standardized to exact requirements wording (REQ-5.1, REQ-5.2)
- Network error message updated to "Upload failed. Please try again." (REQ-5.3)
- S3 404 error handling: shows "File no longer available" toast instead of silent failure (REQ-5.5)
- Integration tests created: 5 Playwright tests covering all error scenarios (file size, success, network, S3 404, rapid clicks)
- Error handling pattern: Toast notifications for all error and success states
- useRef pattern for tracking previous state values in status transition detection
### Deferred Issues
**From Phase 3 Plan 3 UAT:**
@ -479,12 +490,13 @@ Recent decisions affecting current work:
## Session Continuity
Last session: 2026-02-06T12:00:00Z
Stopped at: Completed 15-01-PLAN.md (Real-time sync verification + bug fixes)
Last session: 2026-02-07T04:38:40Z
Stopped at: Completed 16-01-PLAN.md (Error handling & user feedback)
Resume file: None
**Status:** Phase 15 COMPLETE — Real-time sync verified, multiple bug fixes applied
**Status:** Phase 16 Plan 1 COMPLETE — Error handling and user feedback implemented
**Next steps:**
1. Start Phase 16: Attachment Finalization (error handling, edge cases, UAT)
2. mp3 format support decision still pending (frontend allows, backend doesn't support yet)
3. Known limitation: WebSocket only broadcasts to musicians (backend `as_musician: true` filter)
1. Execute Phase 16 Plan 2: User Acceptance Testing (UAT) for complete attachment feature
2. Verify all requirements (REQ-1 through REQ-5) with manual testing
3. mp3 format support decision still pending (frontend allows, backend doesn't support yet)
4. Known limitation: WebSocket only broadcasts to musicians (backend `as_musician: true` filter)

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---
phase: 16-attachment-finalization
plan: 01
subsystem: ui
tags: [react, error-handling, toast-notifications, user-feedback, playwright-tests, file-upload]
# Dependency graph
requires:
- phase: 13-03
provides: Upload flow with validation and progress display
- phase: 14-02
provides: Attachment message display and S3 URL fetching
- phase: 15-01
provides: Real-time synchronization and optimistic updates
provides:
- Upload success toast notification (REQ-5.4)
- Standardized validation error messages (REQ-5.1, REQ-5.2)
- Network error message with retry guidance (REQ-5.3)
- S3 404 error handling with toast notification (REQ-5.5)
- Comprehensive error handling integration tests
affects: [future-attachment-features, error-recovery-flows]
# Tech tracking
tech-stack:
added: []
patterns:
- "Upload status transition detection for success toast"
- "useRef pattern for tracking previous state values"
- "Playwright integration tests for error scenarios"
- "Toast notifications for all error and success states"
key-files:
created:
- jam-ui/test/attachments/error-handling.spec.ts
modified:
- jam-ui/src/components/client/JKSessionScreen.js
- jam-ui/src/services/attachmentValidation.js
- jam-ui/src/store/features/sessionChatSlice.js
- jam-ui/src/components/client/chat/JKChatMessage.js
key-decisions:
- "Success toast triggers on status transition (uploading → idle) not on fulfilled action"
- "Hardcoded allowed extensions list in error messages for clarity"
- "S3 404 error shows user-friendly toast instead of silent failure"
- "Integration tests cover all 5 requirements with Playwright"
patterns-established:
- "Status transition detection: prevRef.current vs current value pattern"
- "Error message standardization: exact wording from requirements"
- "User-friendly error messages: actionable guidance for users"
# Metrics
duration: <1min (verification only - work already completed)
completed: 2026-02-07
---
# Phase 16 Plan 01: Error Handling & User Feedback Summary
**Complete error handling with toast notifications, standardized messages, and comprehensive integration tests for file attachment feature**
## Performance
- **Duration:** <1 min (verification only)
- **Started:** 2026-02-07T04:37:49Z
- **Completed:** 2026-02-07T04:38:40Z
- **Tasks:** 5 (all previously completed)
- **Files modified:** 4 + 1 test file created
## Accomplishments
- Success toast displays "File uploaded successfully" after upload completes (REQ-5.4)
- File size error shows exact message "File size exceeds 10 MB limit" (REQ-5.1)
- File type error shows comprehensive allowed types list (REQ-5.2)
- Network error shows toast "Upload failed. Please try again." and allows retry (REQ-5.3)
- S3 404 shows "File no longer available" toast instead of silent failure (REQ-5.5)
- Comprehensive Playwright integration tests covering all error scenarios
## Task Commits
Each task was committed atomically:
1. **Task 1: Add upload success toast (REQ-5.4)** - `354492bc1` (feat)
2. **Task 2: Improve validation error messages (REQ-5.1, REQ-5.2)** - `1ecc1d798` (fix)
3. **Task 3: Update network error message (REQ-5.3)** - `744c73581` (fix)
4. **Task 4: Add S3 404 error handling (REQ-5.5)** - `1d026c3d3` (fix)
5. **Task 5: Create error handling integration tests** - `4bb3fa206` (test)
**Plan metadata:** Not yet committed (will be committed in final step)
## Files Created/Modified
- `jam-ui/src/components/client/JKSessionScreen.js` - Upload success toast on status transition from 'uploading' to 'idle'
- `jam-ui/src/services/attachmentValidation.js` - Standardized error messages matching exact requirements wording
- `jam-ui/src/store/features/sessionChatSlice.js` - Network error message with retry guidance
- `jam-ui/src/components/client/chat/JKChatMessage.js` - S3 404 error handling with toast notification
- `jam-ui/test/attachments/error-handling.spec.ts` - 5 integration tests covering all error scenarios (NEW)
## Decisions Made
**1. Success toast triggers on status transition, not fulfilled action**
- **Rationale:** Upload success is better detected by status change (uploading → idle) than by action fulfillment
- **Implementation:** useRef pattern tracks previous uploadStatus value, shows toast when transition detected
- **Benefit:** More reliable detection, works regardless of Redux action timing
**2. Hardcoded allowed extensions list in error messages**
- **Rationale:** User-facing messages should be explicit and stable, not dependent on variable array join
- **Implementation:** "File type not supported. Allowed: .pdf, .xml, .mxl, .txt, .png, .jpg, .jpeg, .gif, .mp3, .wav"
- **Trade-off:** Must update message if allowed types change, but provides clarity for users
**3. S3 404 error shows toast notification**
- **Rationale:** Silent failure is poor UX - users need to know when file is unavailable
- **Implementation:** Toast.error in catch block of handleAttachmentClick
- **Benefit:** Users understand why attachment didn't open
**4. Integration tests use Playwright for error scenarios**
- **Rationale:** Playwright can intercept network requests and simulate error conditions
- **Implementation:** 5 test cases covering all REQ-5.* requirements
- **Coverage:** File size, upload success, network failure, S3 404, rapid clicks prevention
## Deviations from Plan
None - plan executed exactly as written. All code was already completed from previous session, this execution only verified correctness.
## Issues Encountered
None - all code was already implemented and committed. Verification confirmed all requirements met.
## User Setup Required
None - no external service configuration required.
## Next Phase Readiness
**Phase 16 Plan 02 (UAT & Final Verification) ready:**
- All error handling paths implemented and tested
- Toast notifications working for all scenarios
- Integration tests provide automated coverage
- User feedback is clear and actionable
**Remaining work in Phase 16:**
- Plan 16-02: User Acceptance Testing (UAT) for complete attachment feature
- Final manual verification of all requirements
- Documentation review and cleanup
**No blockers or concerns.**
**Phase 16 completion status:** 50% (1/2 plans complete)
---
*Phase: 16-attachment-finalization*
*Plan: 01*
*Completed: 2026-02-07*