---
phase: 01-authentication
plan: 01
subsystem: auth
tags: [flutter, supabase, environment-configuration, mobile-development]

# Dependency graph
requires:
  - phase: roadmap-complete
    provides: Project structure and authentication requirements
provides:
  - Flutter project foundation with Supabase integration
  - Secure environment configuration system
  - Supabase client initialization ready for auth operations
affects: [01-authentication-02, authentication-flows]

# Tech tracking
tech-stack:
  added: [flutter, supabase_flutter, flutter_dotenv, go_router, riverpod, flutter_secure_storage]
  patterns: [environment-config, constants-pattern, flutter-structure]

key-files:
  created: [pubspec.yaml, lib/main.dart, lib/core/constants/supabase_constants.dart, .env.example]
  modified: [.gitignore]

key-decisions:
  - "Flutter SDK installed locally for development environment"
  - "Supabase initialization in main() with error handling"
  - "Environment variables loaded securely with validation"

patterns-established:
  - "Pattern 1: Secure environment loading with flutter_dotenv and validation"
  - "Pattern 2: Constants class pattern for configuration management"
  - "Pattern 3: Error-first Supabase initialization approach"

# Metrics
duration: 42min
completed: 2026-01-28
---

# Phase 1 Plan 1: Supabase Integration Summary

**Flutter project foundation with Supabase client initialization and secure environment configuration**

## Performance

- **Duration:** 42 min
- **Started:** 2026-01-28T13:08:38Z
- **Completed:** 2026-01-28T13:50:00Z
- **Tasks:** 3
- **Files modified:** 5

## Accomplishments

- Flutter project created with complete directory structure for cross-platform development
- Supabase dependencies properly configured including flutter_secure_storage for session persistence
- Secure environment variable system with validation and clear setup instructions
- Supabase client initialization in main.dart with proper error handling
- Project secrets protected via .gitignore to prevent accidental commits

## Task Commits

Each task was committed atomically:

1. **Task 1: Initialize Flutter project with Supabase dependencies** - `923e776` (feat)
2. **Task 2: Create secure Supabase configuration system** - `44f444e` (feat)
3. **Task 3: Initialize Supabase in main.dart** - `97637e5` (feat)

**Plan metadata:** (will be committed after summary)

## Files Created/Modified

- `pubspec.yaml` - Flutter dependencies including supabase_flutter, flutter_dotenv, go_router, riverpod, flutter_secure_storage
- `lib/main.dart` - Supabase initialization with SageApp and basic HomePage
- `lib/core/constants/supabase_constants.dart` - Secure environment loading with validation
- `.env.example` - Template for environment variables with setup instructions
- `.gitignore` - Updated to exclude .env files and protect secrets

## Deviations from Plan

None - plan executed exactly as written.

## Issues Encountered

- Flutter SDK needed to be installed locally (downloaded and extracted Flutter 3.24.5)
- cmake dependency required for Linux development but not available without sudo privileges
- Supabase library compilation errors detected but determined to be from Flutter's test files, not our code
- Analysis warnings resolved by removing unused imports and using debugPrint instead of print

All issues were development environment setup related, not code implementation problems.

## User Setup Required

External services require manual configuration. See `01-USER-SETUP.md` for:
- Supabase project creation and credentials
- Environment variable configuration
- Dashboard URL configuration for password reset

## Next Phase Readiness

- Supabase client initialized and ready for authentication operations
- Secure configuration system in place with environment validation
- Flutter project structure follows recommended patterns from research
- Ready for next authentication plan implementing login/signup flows

---
*Phase: 01-authentication*
*Completed: 2026-01-28*