--- description: "Task list for Fitbit-Garmin Local Sync implementation" --- # Tasks: Fitbit-Garmin Local Sync **Input**: Design documents from `/specs/001-fitbit-garmin-sync/` **Prerequisites**: plan.md (required), spec.md (required for user stories), research.md, data-model.md, contracts/ **Tests**: The examples below include test tasks. Tests are OPTIONAL - only include them if explicitly requested in the feature specification. **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 - **Single project**: `src/`, `tests/` at repository root - **Web app**: `backend/src/`, `frontend/src/` - **Mobile**: `api/src/`, `ios/src/` or `android/src/` - Paths shown below assume single project - adjust based on plan.md structure ## Phase 1: Setup (Shared Infrastructure) **Purpose**: Project initialization and basic structure - [x] T001 Create project structure per implementation plan in backend/ - [x] T002 Initialize Python 3.11 project with FastAPI, SQLAlchemy, garminconnect, garth, fitbit dependencies in requirements.txt - [x] T003 [P] Configure linting and formatting tools (black, flake8) in pyproject.toml --- ## 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 - [x] T004 Setup database schema and migrations framework using SQLAlchemy in backend/src/models/ - [x] T005 [P] Create base models (Configuration, API Token) in backend/src/models/config.py and backend/src/models/api_token.py - [x] T006 [P] Setup API routing and middleware structure in backend/main.py - [x] T007 Create database manager for PostgreSQL in backend/src/services/postgresql_manager.py - [x] T008 Configure error handling and logging infrastructure in backend/src/utils/ - [x] T009 Setup environment configuration management in backend/src/utils/ - [x] T010 Create FastAPI app structure with proper routing in backend/main.py - [x] T011 Setup Docker configuration with PostgreSQL in backend/Dockerfile and backend/docker-compose.yml **Checkpoint**: Foundation ready - user story implementation can now begin in parallel --- ## Phase 3: User Story 1 - Sync Weight Data from Fitbit to Garmin (Priority: P1) 🎯 MVP **Goal**: User can transfer weight data from Fitbit to Garmin without duplicating entries, with a web interface to trigger the sync. **Independent Test**: Can be fully tested by configuring Fitbit and Garmin credentials, triggering a weight sync, and verifying weight entries appear in Garmin without duplication. Delivers core value of unified health data. ### Tests for User Story 1 (OPTIONAL - only if tests requested) ⚠️ > **NOTE: Write these tests FIRST, ensure they FAIL before implementation** - [ ] T012 [P] [US1] Contract test for /api/sync/weight endpoint in backend/tests/contract/test_weight_sync.py - [ ] T013 [P] [US1] Integration test for weight sync flow in backend/tests/integration/test_weight_sync_flow.py ### Implementation for User Story 1 - [x] T014 [P] [US1] Create Weight Record model in backend/src/models/weight_record.py - [x] T015 [P] [US1] Create Sync Log model in backend/src/models/sync_log.py - [x] T016 [US1] Implement Fitbit Client service in backend/src/services/fitbit_client.py - [x] T017 [US1] Implement Garmin Client service in backend/src/services/garmin_client.py - [x] T018 [US1] Implement weight sync logic in backend/src/services/sync_app.py - [x] T019 [US1] Implement weight sync API endpoint in backend/src/api/sync.py - [x] T020 [US1] Create status API endpoint in backend/src/api/status.py - [x] T021 [US1] Add web UI for weight sync in backend/templates/index.html - [x] T022 [US1] Add logging for weight sync operations in backend/src/utils/helpers.py **Checkpoint**: At this point, User Story 1 should be fully functional and testable independently --- ## Phase 4: User Story 2 - Archive Activity Files from Garmin (Priority: P2) **Goal**: User can download and archive Garmin activity files (.fit, .gpx, .tcx) to a local directory structure with proper organization. **Independent Test**: Can be tested by triggering the activity archiving process and verifying original activity files are downloaded to the specified local directory with proper organization. ### Tests for User Story 2 (OPTIONAL - only if tests requested) ⚠️ - [ ] T023 [P] [US2] Contract test for /api/sync/activities endpoint in backend/tests/contract/test_activities_sync.py - [ ] T024 [P] [US2] Integration test for activity archiving flow in backend/tests/integration/test_activity_flow.py ### Implementation for User Story 2 - [x] T025 [P] [US2] Create Activity Metadata model in backend/src/models/activity.py - [x] T026 [US2] Extend Garmin Client service with activity download methods in backend/src/services/garmin_client.py - [x] T027 [US2] Implement activity archiving logic in backend/src/services/sync_app.py - [x] T028 [US2] Implement activity sync API endpoint in backend/src/api/sync.py - [x] T029 [US2] Add activity list endpoint in backend/src/api/activities.py - [x] T030 [US2] Update web UI to include activity archiving in backend/templates/index.html - [x] T031 [US2] Add logging for activity archiving operations in backend/src/utils/helpers.py **Checkpoint**: At this point, User Stories 1 AND 2 should both work independently --- ## Phase 5: User Story 3 - Download Comprehensive Health Metrics from Garmin (Priority: P3) **Goal**: User can download and store comprehensive health metrics from Garmin in a local database with API endpoints for querying. **Independent Test**: Can be tested by triggering the metrics download and verifying that various types of health metrics are stored in the database with proper timestamps and types. ### Tests for User Story 3 (OPTIONAL - only if tests requested) ⚠️ - [ ] T032 [P] [US3] Contract test for /api/metrics endpoints in backend/tests/contract/test_metrics_api.py - [ ] T033 [P] [US3] Integration test for health metrics download flow in backend/tests/integration/test_metrics_flow.py ### Implementation for User Story 3 - [x] T034 [P] [US3] Create Health Metric model in backend/src/models/health_metric.py - [x] T035 [US3] Extend Garmin Client service with comprehensive metrics download methods in backend/src/services/garmin_client.py - [x] T036 [US3] Implement health metrics download logic in backend/src/services/sync_app.py - [x] T037 [US3] Implement metrics list and query endpoints in backend/src/api/metrics.py - [x] T038 [US3] Implement health data summary endpoint in backend/src/api/metrics.py - [x] T039 [US3] Add UI elements for metrics management in backend/templates/ - [x] T040 [US3] Add logging for metrics download operations in backend/src/utils/helpers.py **Checkpoint**: All user stories should now be independently functional --- ## Phase 6: Setup API Endpoints for Configuration (Cross-cutting) **Goal**: Implement configuration and authentication endpoints that support all user stories - [x] T041 [P] Create setup API endpoints in backend/src/api/setup.py - [x] T042 [P] Implement Garmin credentials save endpoint in backend/src/api/setup.py - [x] T043 [P] Implement Fitbit credentials save and auth URL endpoint in backend/src/api/setup.py - [x] T044 [P] Implement Fitbit OAuth callback endpoint in backend/src/api/setup.py - [x] T045 Create logs endpoint in backend/src/api/logs.py - [x] T046 Update UI with setup page in backend/templates/setup.html - [x] T047 [P] Create auth status model in backend/src/models/auth_status.py - [x] T048 [P] Create auth status API endpoint in backend/src/api/setup.py --- ## Phase 7: Polish & Cross-Cutting Concerns **Purpose**: Improvements that affect multiple user stories - [x] T047 [P] Documentation updates in backend/README.md - [ ] T048 Code cleanup and refactoring - [ ] T049 Performance optimization across all stories - [ ] T050 [P] Additional unit tests (if requested) in backend/tests/unit/ - [ ] T051 Security hardening for OAuth token storage and API access - [ ] T052 Run quickstart.md validation - [ ] T053 Final integration testing across all features - [x] T054 Update Docker configuration with all required services - [x] T055 Create setup guide in backend/docs/setup.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 → P2 → P3) - **Configuration Phase (Phase 6)**: Can proceed in parallel with user stories but may be needed first - **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 2 (P2)**: Can start after Foundational (Phase 2) - May integrate with US1 but should be independently testable - **User Story 3 (P3)**: Can start after Foundational (Phase 2) - May integrate with US1/US2 but should be independently testable ### Within Each User Story - Tests (if included) MUST be written and FAIL before implementation - Models before services - Services before endpoints - Core implementation before integration - Story complete before moving to next priority ### Parallel Opportunities - All Setup tasks marked [P] can run in parallel - All Foundational tasks marked [P] can run in parallel (within Phase 2) - Once Foundational phase completes, all user stories can start in parallel (if team capacity allows) - All tests for a user story marked [P] can run in parallel - Models within a story marked [P] can run in parallel - Different user stories can be worked on in parallel by different team members --- ## Parallel Example: User Story 1 ```bash # Launch all tests for User Story 1 together (if tests requested): Task: "Contract test for /api/sync/weight endpoint in backend/tests/contract/test_weight_sync.py" Task: "Integration test for weight sync flow in backend/tests/integration/test_weight_sync_flow.py" # Launch all models for User Story 1 together: Task: "Create Weight Record model in backend/src/models/weight_record.py" Task: "Create Sync Log model in backend/src/models/sync_log.py" ``` --- ## Implementation Strategy ### MVP First (User Story 1 Only) 1. Complete Phase 1: Setup 2. Complete Phase 2: Foundational (CRITICAL - blocks all stories) 3. Complete Phase 3: User Story 1 4. **STOP and VALIDATE**: Test User Story 1 independently 5. Deploy/demo if ready ### Incremental Delivery 1. Complete Setup + Foundational → Foundation ready 2. Add User Story 1 → Test independently → Deploy/Demo (MVP!) 3. Add User Story 2 → Test independently → Deploy/Demo 4. Add User Story 3 → Test independently → Deploy/Demo 5. Each story adds value without breaking previous stories ### Parallel Team Strategy With multiple developers: 1. Team completes Setup + Foundational together 2. Once Foundational is done: - Developer A: User Story 1 - Developer B: User Story 2 - Developer C: User Story 3 3. Stories complete and integrate independently --- ## Notes - [P] tasks = different files, no dependencies - [Story] label maps task to specific user story for traceability - 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