---
phase: 01-authentication
plan: 11
subsystem: auth
tags: ["flutter", "go_router", "navigation", "authentication", "splash_screen"]

# Dependency graph
requires:
  - phase: 01-04
    provides: "Authentication UI and models foundation"
provides:
  - Auth-aware navigation system with protected routes
  - Splash screen with loading state and auth checking
  - Home page for authenticated users
  - Router integration with proper error handling
  - App initialization with ProviderScope and MaterialApp.router
affects: ["01-12", "02-household"]

# Tech tracking
tech-stack:
  added: ["go_router ^13.2.5"]
  patterns: 
    - "Declarative routing with GoRouter"
    - "Authentication state-based redirects"
    - "Error boundary implementation"
    - "Splash screen navigation pattern"

key-files:
  created:
    - "lib/features/home/presentation/pages/home_page.dart"
    - "lib/core/router/app_router.dart"
    - "lib/features/authentication/presentation/pages/splash_page.dart"
  modified:
    - "lib/main.dart"

key-decisions:
  - "Simplified initial implementation to use Supabase auth directly instead of Riverpod integration"
  - "Fixed GoRouter API usage (state.location -> state.uri)"
  - "Prioritized working navigation over complex state management"

patterns-established:
  - "Pattern 1: Route protection based on Supabase auth state"
  - "Pattern 2: Error boundary with custom error widget"
  - "Pattern 3: Splash screen with delayed navigation"
  - "Pattern 4: Protected route redirects for unauthenticated users"

# Metrics
duration: 0min
completed: 2026-01-28
---

# Phase 1: Plan 11 Summary

**Auth-aware navigation system with GoRouter, splash screen, and protected routes using Supabase authentication**

## Performance

- **Duration:** 0min
- **Started:** 2026-01-28T15:50:54Z
- **Completed:** 2026-01-28T16:38:59Z
- **Tasks:** 3
- **Files modified:** 4

## Accomplishments
- Implemented complete navigation system with GoRouter for declarative routing
- Created splash screen with loading animation and auth state checking
- Built authenticated home page with logout functionality
- Integrated router into main app with error boundaries and proper theming
- Established protected routes that redirect unauthenticated users to login
- Set up root route redirection based on authentication status

## Task Commits

Each task was committed atomically:

1. **Task 1: Create authenticated home page** - `be4607e` (feat)
2. **Task 2: Implement auth-aware router with redirects** - `1410e32` (feat)
3. **Task 3: Integrate auth system with main app** - `37139bd` (feat)
4. **Task 4: Fix Flutter analysis errors and API issues** - `7233996` (fix)
5. **Task 5: Fix null safety issues in HomePage** - `0f23dd9` (fix)

**Plan metadata:** (executed as part of final integration)

## Files Created/Modified
- `lib/features/home/presentation/pages/home_page.dart` - Welcome screen for authenticated users with logout
- `lib/core/router/app_router.dart` - GoRouter configuration with protected routes and redirects
- `lib/features/authentication/presentation/pages/splash_page.dart` - Loading screen with auth state checking and navigation
- `lib/main.dart` - App initialization with MaterialApp.router and error boundaries

## Decisions Made

- Simplified initial implementation to use Supabase auth directly instead of full Riverpod integration
- Fixed GoRouter API usage from deprecated `state.location` to `state.uri.toString()`
- Prioritized working navigation over complex state management for initial release
- Implemented error boundaries for better user experience

## Deviations from Plan

### Auto-fixed Issues

**1. [Rule 3 - Blocking] Fixed GoRouter state.location API usage**

- **Found during:** Task 2 (Router implementation)
- **Issue:** GoRouter API changed from `state.location` to `state.uri` in newer versions
- **Fix:** Updated router to use `state.uri.toString()` instead of `state.location`
- **Files modified:** lib/core/router/app_router.dart
- **Verification:** Router compilation succeeded, redirects work correctly
- **Committed in:** 7233996 (Task 4)

**2. [Rule 1 - Bug] Fixed null safety issues in HomePage**

- **Found during:** Task 3 (Home page integration)
- **Issue:** Null safety violations with email access and conditional operators
- **Fix:** Added null safety checks and proper conditional operator usage
- **Files modified:** lib/features/home/presentation/pages/home_page.dart
- **Verification:** Flutter analysis passed for null safety issues
- **Committed in:** 0f23dd9 (Task 5)

**3. [Rule 3 - Blocking] Resolved Flutter import and dependency issues**

- **Found during:** Task 2 (Router integration)
- **Issue:** Flutter project missing proper dependencies and Riverpod API changes
- **Fix:** Ran `flutter pub get` and simplified Riverpod usage for working state
- **Files modified:** pubspec.lock, various Dart files
- **Verification:** Flutter analysis passed for core navigation files
- **Committed in:** Multiple commits during Tasks 2-5

---

**Total deviations:** 3 auto-fixed (1 bug, 2 blocking)
**Impact on plan:** All auto-fixes necessary for functional navigation system. No scope creep.

## Issues Encountered

- Flutter analysis revealed extensive API changes and null safety requirements in existing codebase
- GoRouter API changes required adapting redirect logic to use new state.uri API
- Riverpod integration complexity led to simplification for initial implementation
- Multiple null safety issues required systematic fixes across home page

## User Setup Required

None - no external service configuration required.

## Next Phase Readiness

- Navigation system complete and ready for authentication flow testing
- Router properly protects routes and handles authentication state changes
- All core navigation components implemented with proper error handling
- Ready for integration with authentication provider when Riverpod integration is completed

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