FitTrack_GarminSync/specs/007-update-the-authentication/tasks.md

description

description
Task list for MFA authentication flow with garth integration

Tasks: Update Authentication Flow for MFA with garth

Input: Design documents from /specs/007-update-the-authentication/ 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

• T001 Create project structure in cli/ directory following implementation plan
• T002 Set up Python 3.13 virtual environment and install required dependencies (Click, httpx, pydantic, pytest, garth, garminconnect)
• T003 Create requirements.txt with pinned dependencies following constitution standards
• T004 Create pyproject.toml with Black, Flake8, Mypy, Isort configurations
• T005 [P] Create initial directory structure (src/, models/, services/, commands/, utils/, tests/)

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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

• T006 Create base data models for User Session, Sync Job, and Authentication Token in src/models/
• T007 [P] Implement API client to interact with backend API endpoints in src/api/client.py
• T008 [P] Create configuration management utilities for YAML config in src/utils/config.py
• T009 [P] Implement token management with secure local storage in src/auth/token_manager.py
• T010 Create output formatting utilities (JSON, table, CSV) in src/utils/output.py
• T011 [P] Implement CLI entry point with base command structure in src/main.py

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

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Phase 3: User Story 1 - Text-Based Authentication with MFA (Priority: P1) 🎯 MVP

Goal: Implement authentication functionality via text-based interface with MFA support so users can securely access the system.

Independent Test: Can be fully tested by running the authentication command with both standard credentials and MFA-enabled accounts, and verifying the system properly validates credentials and handles MFA flows.

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 auth endpoint in tests/contract/test_auth_api.py
• T013 [P] [US1] Integration test for auth flow in tests/integration/test_auth_flow.py

Implementation for User Story 1

• T014 [US1] Create AuthManager class to handle authentication flows with MFA support in src/auth/auth_manager.py
• T015 [US1] Implement MFA handling functionality in AuthManager
• T016 [US1] Create authentication command implementation in src/commands/auth_cmd.py
• T017 [US1] Add interactive authentication mode with secure input prompts
• T018 [US1] Implement token validation and refresh logic
• T019 [US1] Add error handling for authentication failures
• T020 [US1] [P] Write unit tests for authentication manager in tests/unit/test_auth_manager.py
• T021 [US1] [P] Write integration tests for authentication flows in tests/integration/test_auth_flow.py

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

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Phase 4: User Story 2 - Trigger Sync Operations via Text Interface (Priority: P2)

Goal: Implement functionality to trigger sync operations from text-based interface so users can initiate data synchronization without using the web interface.

Independent Test: Can be fully tested by authenticating and then running the sync trigger command, and verifying that the sync process is initiated in the backend system.

Tests for User Story 2 (OPTIONAL - only if tests requested) ⚠️

• T022 [P] [US2] Contract test for sync trigger endpoint in tests/contract/test_sync_trigger.py
• T023 [P] [US2] Integration test for sync triggering in tests/integration/test_sync_operations.py

Implementation for User Story 2

• T024 [US2] Create SyncCommand class to handle sync triggering functionality in src/commands/sync_cmd.py
• T025 [US2] Implement sync trigger API call functionality
• T026 [US2] Add support for different sync types (activities, health, workouts)
• T027 [US2] Implement date range and full sync options
• T028 [US2] Add authentication validation before sync triggers
• T029 [US2] Handle sync conflict detection (concurrent sync requests)
• T030 [US2] [P] Write unit tests for sync command functionality in tests/unit/test_commands.py
• T031 [US2] [P] Write integration tests for sync triggering in tests/integration/test_sync_operations.py

Checkpoint: At this point, User Stories 1 AND 2 should both work independently

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Phase 5: User Story 3 - Check Sync Status via Text Interface (Priority: P3)

Goal: Implement functionality to check sync operation status from text-based interface so users can monitor data synchronization progress.

Independent Test: Can be fully tested by triggering a sync and then checking its status via the text interface, with various sync states being properly reported.

Tests for User Story 3 (OPTIONAL - only if tests requested) ⚠️

• T032 [P] [US3] Contract test for sync status endpoint in tests/contract/test_sync_status.py
• T033 [P] [US3] Integration test for status checking in tests/integration/test_sync_status.py

Implementation for User Story 3

• T034 [US3] Create StatusCommand class to handle sync status checking in src/commands/sync_cmd.py
• T035 [US3] Implement sync status API call functionality
• T036 [US3] Add support for retrieving specific job status by ID
• T037 [US3] Format status output in multiple formats (table, JSON, CSV)
• T038 [US3] Handle status requests for non-existent sync jobs
• T039 [US3] [P] Write unit tests for status command functionality in tests/unit/test_commands.py
• T040 [US3] [P] Write integration tests for status checking in tests/integration/test_sync_status.py

Checkpoint: All user stories should now be independently functional

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Phase N: Polish & Cross-Cutting Concerns

Purpose: Improvements that affect multiple user stories

• T041 [P] Documentation updates in docs/
• T042 Code cleanup and refactoring
• T043 Performance optimization across all stories
• T044 [P] Additional unit tests (if requested) in tests/unit/
• T045 Security hardening
• T046 Run quickstart.md validation

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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)
• 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) - Depends on US1 authentication
• User Story 3 (P3): Can start after Foundational (Phase 2) - Depends on US1 authentication

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

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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 (after authentication component ready)
   • Developer C: User Story 3 (after authentication component ready)
3. Stories complete and integrate independently

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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