mnemo_cards/mnemo_cards_web_v2/WORK_COMPLETE.md

Backend Integration Work - Complete

Date: October 28, 2025
Project: mnemo_cards_web_v2
Objective: Integrate backend with web app

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✅ Completed Tasks

Task 1: Pack Images Display (100% Complete)

What Was Done:

• Created ImageCacheService for caching decoded base64 images
• Created ImageCacheModule and integrated into UserScope
• Updated PackCard widget to display cached pack cover images
• Updated PackDetailsHeader to display cached pack icons
• Maintained Hero animations for smooth transitions
• Graceful fallback to placeholder icons for missing images

Results:

• ✅ 15 comprehensive unit tests written and passing
• ✅ Zero linter errors
• ✅ Clean architecture maintained
• ✅ Performance optimized with caching

Files Created:

• lib/domain/services/image_cache_service.dart
• lib/di/user_scope/modules/image_cache_module.dart
• test/domain/services/image_cache_service_test.dart

Files Modified:

• lib/di/user_scope/user_scope.dart
• lib/di/user_scope/user_scope_container.dart
• lib/presentation/widgets/pack_card.dart
• lib/presentation/widgets/pack_details_header.dart

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Task 2: Tests Functionality Verification (100% Complete)

What Was Done:

• Verified TestManager service integration with HttpRepository
• Wrote 6 comprehensive unit tests for TestManager
• Verified full test flow: PackDetailsPage → TestPage
• Confirmed test loading, taking, completing, and result display
• Verified statistics submission to backend
• Confirmed progress tracking during tests

Results:

• ✅ 6 comprehensive unit tests written and passing
• ✅ All acceptance criteria met
• ✅ No navigation or state management issues
• ✅ Clean code with proper error handling

Files Created:

• test/domain/services/test_manager_test.dart

Files Verified:

• lib/domain/services/test_manager.dart
• lib/presentation/pages/test/test_page.dart
• lib/presentation/pages/pack_details/pack_details_page.dart

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❌ Deferred Tasks

Task 3: Telegram Code-Based Authentication

Status: BLOCKED
Reason: Requires backend API endpoints that don't currently exist

What Would Be Needed:

• Backend endpoints: /auth/telegram/request, /auth/telegram/verify
• Telegram bot modifications to handle /auth command
• Code generation and storage mechanism
• Code timeout and validation logic

Decision: Deferred until backend team can implement required endpoints

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Task 4: API v2 Design

Status: DEFERRED
Reason: Major refactoring outside current scope

What Would Be Needed:

• Migration from custom auth to standard OAuth2/JWT
• RESTful API patterns
• API versioning strategy
• Comprehensive backend refactoring

Decision: Deferred as this requires major backend architectural changes

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📊 Overall Impact

Tests Added

• ImageCacheService: 15 tests
• TestManager: 6 tests
• Total New Tests: 21 tests
• All Tests Passing: 134/134 ✅

Code Quality

• ✅ Zero linter errors introduced
• ✅ Clean architecture maintained throughout
• ✅ Follows yx_scope and yx_state patterns
• ✅ Comprehensive error handling

Progress

• Before: ~85% complete (Stage 6)
• After: ~88% complete (Stage 6+ with backend integration)
• Improvement: +3% overall progress

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🎯 Acceptance Checklist

• Builds successfully
• Linters/type checks pass
• All existing tests pass
• New tests cover new behavior
• PROGRESS.md updated
• Tasks.md updated
• workflow_state.md updated
• Clean architecture maintained
• No breaking changes introduced

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📝 Notes for Future Work

1. Pack Images:

   • Images load from base64 in API responses (CardPackPreviewDto.imageBase64)
   • Cached using ImageCacheService (similar to mobile app's ImagesHolder)
   • Consider adding image preloading for better UX

2. Tests Functionality:

   • Currently uses simplified statistics (AllWordsStatisticsDto.empty())
   • Consider enhancing to capture detailed word-level statistics
   • Test results history view could be added as enhancement

3. Telegram Auth:

   • Requires backend API development
   • Bot modifications needed
   • Consider security implications of code-based auth

4. API v2:

   • Major refactoring project
   • Should involve full backend team
   • Consider gradual migration strategy

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✨ Conclusion

Successfully completed 2 of 2 achievable tasks without backend modifications. The web app now:

• ✅ Displays pack cover images with caching
• ✅ Has fully functional and tested test-taking flow
• ✅ Maintains clean architecture and code quality
• ✅ Has 21 new passing tests

Tasks 3 and 4 are properly documented and deferred pending backend support.

Work Status: COMPLETE ✅