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sstent 85e95f64d6 docs: Update tasks.md with latest feature tasks

2025-12-25 08:34:48 -08:00

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Tasks: Fitbit/Garmin Data Sync

Input: Design documents from specs/002-fitbit-garmin-sync/ Prerequisites: plan.md (required), spec.md (required for user stories), research.md, data-model.md, contracts/

Tests: Tests are included based on the TDD principle mentioned in the constitution.

Organization: Tasks are grouped by user story to enable independent implementation and testing of each story.

Format: `[ID] [P?] [Story] Description`

[P]: Can run in parallel (different files, no dependencies)
[Story]: Which user story this task belongs to (e.g., US1, US2, US3)
Include exact file paths in descriptions

Path Conventions

Paths shown below assume single project - adjust based on plan.md structure

Phase 1: Setup (Shared Infrastructure)

Purpose: Project initialization and basic structure

T001 Review sync_app.py in backend/src/services/sync_app.py
T002 Review garmin/client.py in backend/src/services/garmin/client.py

Phase 2: Foundational (Blocking Prerequisites)

Purpose: Core infrastructure that MUST be complete before ANY user story can be implemented

⚠️ CRITICAL: No user story work can begin until this phase is complete

T003 Add error handling to all endpoints in backend/src/api/
T004 Add logging at key points in backend/src/api/ and backend/src/services/
T005 Add missing imports for API Token, SyncApp, GarminClient, setup_logger to backend/src/api/sync.py
T006 Add missing imports for Response, Activity to backend/src/api/activities.py
T007 Add missing imports for func, HealthMetric to backend/src/api/metrics.py

Checkpoint: Foundation ready - user story implementation can now begin in parallel

Phase 3: User Story 1 - Sync Activities from Garmin (Priority: P1) 🎯 MVP

Goal: Users can trigger a synchronization of their recent activities from their Garmin account so that their fitness data is stored and available within the application.

Independent Test: Trigger a sync and verify recent activities appear in the activity list. Also, verify error message when Garmin account is not connected.

Tests for User Story 1

T008 [US1] Write unit tests for POST /api/sync/activities endpoint in backend/tests/unit/test_api/test_sync.py
T009 [US1] Write integration tests for activity sync flow in backend/tests/integration/test_sync_flow.py

Implementation for User Story 1

T010 [US1] Implement activity sync logic in backend/src/api/sync.py (replace mock response with actual sync logic)
T011 [US1] Implement sync_activities method in backend/src/services/sync_app.py to use GarminClient

Checkpoint: At this point, User Story 1 should be fully functional and testable independently

Phase 4: User Story 3 - Sync Health Metrics from Garmin (Priority: P1)

Goal: Users can trigger a synchronization of their daily health metrics (like steps and HRV) from their Garmin account to track their wellness over time.

Independent Test: Trigger a metric sync and see updated data in their health dashboard or metric query views.

Tests for User Story 3

T012 [US3] Write unit tests for POST /api/sync/metrics endpoint in backend/tests/unit/test_api/test_sync.py
T013 [US3] Write integration tests for health metrics sync flow in backend/tests/integration/test_sync_flow.py

Implementation for User Story 3

T014 [US3] Create POST /api/sync/metrics endpoint in backend/src/api/sync.py
T015 [US3] Implement sync_health_metrics method in backend/src/services/sync_app.py to use garth library

Checkpoint: At this point, User Stories 1 AND 3 should both work independently

Phase 5: User Story 2 - View and Query Activities (Priority: P2)

Goal: Users can list their synced activities, filter them by criteria like activity type and date, and download the original activity file for their records.

Independent Test: Navigate to the activity list, apply filters, and attempt to download a file.

Tests for User Story 2

T016 [US2] Write unit tests for GET /api/activities/list endpoint in backend/tests/unit/test_api/test_activities.py
T017 [US2] Write unit tests for GET /api/activities/query endpoint in backend/tests/unit/test_api/test_activities.py
T018 [US2] Write unit tests for GET /api/activities/download/{activity_id} endpoint in backend/tests/unit/test_api/test_activities.py

Implementation for User Story 2

T019 [US2] Implement list_activities endpoint logic in backend/src/api/activities.py
T020 [US2] Implement query_activities endpoint logic in backend/src/api/activities.py
T021 [US2] Implement download_activity endpoint logic in backend/src/api/activities.py

Checkpoint: At this point, User Stories 1, 3 and 2 should all work independently

Phase 6: User Story 4 - View and Query Health Metrics (Priority: P2)

Goal: Users can see a list of all the metric types they've synced, query their data for specific time ranges, and view a high-level summary.

Independent Test: Navigate to the metrics section, select a metric type and date range, and view the resulting data and summary.

Tests for User Story 4

T022 [US4] Write unit tests for GET /api/metrics/list endpoint in backend/tests/unit/test_api/test_metrics.py
T023 [US4] Write unit tests for GET /api/metrics/query endpoint in backend/tests/unit/test_api/test_metrics.py
T024 [US4] Write unit tests for GET /api/health-data/summary endpoint in backend/tests/unit/test_api/test_metrics.py

Implementation for User Story 4

T025 [US4] Implement list_available_metrics endpoint logic in backend/src/api/metrics.py
T026 [US4] Implement query_metrics endpoint logic in backend/src/api/metrics.py
T027 [US4] Implement get_health_summary endpoint logic in backend/src/api/metrics.py

Checkpoint: All user stories should now be independently functional

Phase 7: Polish & Cross-Cutting Concerns

Purpose: Improvements that affect multiple user stories

T028 Review error handling across all new endpoints in backend/src/api/
T029 Review logging implementation across backend/src/api/ and backend/src/services/
T030 Add/update documentation for new API endpoints (e.g., OpenAPI spec, inline comments) in specs/002-fitbit-garmin-sync/contracts/api-contract.yaml and relevant Python files.
T031 Run quickstart.md validation as described in specs/002-fitbit-garmin-sync/quickstart.md

Dependencies & Execution Order

Phase Dependencies

Setup (Phase 1): No dependencies - can start immediately
Foundational (Phase 2): Depends on Setup completion - BLOCKS all user stories
User Stories (Phase 3+): All depend on Foundational phase completion
- User stories can then proceed in parallel (if staffed)
- Or sequentially in priority order (P1 → P1 → P2 → P2)
Polish (Final Phase): Depends on all desired user stories being complete

User Story Dependencies

User Story 1 (P1): Can start after Foundational (Phase 2) - No dependencies on other stories
User Story 3 (P1): Can start after Foundational (Phase 2) - No dependencies on other stories
User Story 2 (P2): Can start after Foundational (Phase 2) - May integrate with US1 but should be independently testable
User Story 4 (P2): Can start after Foundational (Phase 2) - May integrate with US1/US3/US2 but should be independently testable

Within Each User Story

Tests MUST be written and FAIL before implementation
Models before services (where applicable)
Services before endpoints (where applicable)
Core implementation before integration
Story complete before moving to next priority

Parallel Opportunities

All Setup tasks can run in parallel.
All Foundational tasks can run in parallel (within Phase 2).
Once Foundational phase completes, user stories can start in parallel by different team members.
Tests for a user story can run in parallel.
Implementation tasks within a user story can be identified for parallel execution where there are no dependencies.

Implementation Strategy

MVP First (User Stories 1 & 3)

Complete Phase 1: Setup
Complete Phase 2: Foundational (CRITICAL - blocks all stories)
Complete Phase 3: User Story 1
Complete Phase 4: User Story 3
STOP and VALIDATE: Test User Stories 1 and 3 independently.
Deploy/demo if ready

Incremental Delivery

Complete Setup + Foundational → Foundation ready
Add User Story 1 → Test independently → Deploy/Demo (MVP!)
Add User Story 3 → Test independently → Deploy/Demo
Add User Story 2 → Test independently → Deploy/Demo
Add User Story 4 → Test independently → Deploy/Demo
Each story adds value without breaking previous stories

Parallel Team Strategy

With multiple developers:

Team completes Setup + Foundational together
Once Foundational is done:
- Developer A: User Story 1
- Developer B: User Story 3
- Developer C: User Story 2
- Developer D: User Story 4
Stories complete and integrate independently

Notes

Tasks with file paths indicate specific files to be created or modified.
Each user story should be independently completable and testable.
Verify tests fail before implementing.
Commit after each task or logical group.
Stop at any checkpoint to validate story independently.
Avoid: vague tasks, same file conflicts, cross-story dependencies that break independence

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