2025-10-10-tournamentroundlifecycle-extraction

TournamentRoundLifecycleService Extraction Complete

Date: 2025-10-10 Task: Extract TournamentRoundLifecycleService from LiveScoringViewModel Status: ✅ Complete

Summary

Successfully extracted ~80-100 lines of tournament round lifecycle management logic from LiveScoringViewModel into a new dedicated service. This is the 4th of 6 planned service extractions as part of the god-class refactoring initiative.

Changes Made

1. Created TournamentRoundLifecycleService.kt (221 lines)

Location: app/src/main/java/com/archeryapprentice/domain/services/TournamentRoundLifecycleService.kt

Extracted Methods:

• startTournamentRound() - Transition round from NOT_STARTED → IN_PROGRESS
• pauseTournamentRound() - Placeholder for future pause functionality
• completeTournamentRound() - Transition round from IN_PROGRESS → COMPLETED
• observeTournamentRoundState() - Real-time Firebase state observation with local processing
• cleanup() - Resource cleanup for listener jobs

Key Features:

• @Singleton service with dependency injection
• Delegates Firebase operations to TournamentSyncService
• Handles local Round entity updates via RoundRepository
• Multi-device synchronization support
• Callback-based architecture for UI updates
• Comprehensive error handling

2. Updated LiveScoringViewModel

Line Count: 2,167 → 2,115 lines (-52 lines, 2.4% reduction)

Changes:

• Added tournamentRoundLifecycleService constructor parameter
• Removed roundStateListenerJob field (moved to service)
• Updated all lifecycle methods to delegate to service:
  • startTournamentRound()
  • pauseTournamentRound()
  • completeTournamentRound()
  • observeTournamentRoundState()
• Updated onCleared() to call service cleanup

3. Updated ActiveScoringScreen.kt

Added service instantiation and wiring:

val sharedTournamentRoundLifecycleService = TournamentRoundLifecycleService(
    roundRepository = factory.createRoundRepository(),
    tournamentSyncService = sharedTournamentSyncService
)

4. Created Comprehensive Tests

File: TournamentRoundLifecycleServiceTest.kt Test Count: 24 tests Coverage:

• Round lifecycle transitions (start, pause, complete)
• Firebase state observation
• Multi-device behavior
• Error handling
• Resource cleanup

5. Updated Test Infrastructure

Fixed missing parameter in test helper files:

• ViewModelFactory.kt
• EndSummaryKeyUniquenessTest.kt
• IntegrationTestBase.kt
• LiveScoringViewModelTestBase.kt

Test Results

All tests passing:

• ✅ TournamentRoundLifecycleServiceTest (24 tests)
• ✅ All LiveScoringViewModel tests
• ✅ All related service tests (TournamentSyncService, EndCompletionService, ScoreConflictResolutionService)
• ✅ No regressions detected

Architecture Impact

Service Dependencies

LiveScoringViewModel
    ├── TournamentRoundLifecycleService (NEW)
    │   ├── TournamentSyncService (delegates Firebase ops)
    │   └── RoundRepository (local DB updates)
    ├── TournamentSyncService
    ├── ScoreConflictResolutionService
    └── EndCompletionService

Extraction Progress

LiveScoringViewModel God-Class Refactoring: 68% → 72% Complete

Service	Status	Lines Extracted
TournamentSyncService	✅ Complete	~400 lines
ScoreConflictResolutionService	✅ Complete	~150 lines
EndCompletionService	✅ Complete	~100 lines
TournamentRoundLifecycleService	✅ Complete	~80 lines
StatisticsAggregationService	🚧 Planned	~150 lines
LeaderboardService	🚧 Planned	~100 lines

Current ViewModel Size: 2,115 lines (down from 2,808 lines originally) Total Reduction: 693 lines (24.7% reduction) Remaining Goal: Extract ~250 more lines to reach target

Multi-Device Behavior

The service preserves critical multi-device synchronization:

1. Device A clicks “Finish Round” → Updates Firebase → Local DB updates
2. Device B observes Firebase change → Service automatically:
   • Updates local Round entity status to COMPLETED
   • Triggers onRoundComplete() callback
   • Emits roundCompleteEvent for UI
3. All devices show completion card simultaneously

Next Steps

1. ✅ TournamentRoundLifecycleService extraction
2. 🚧 Extract StatisticsAggregationService (~150 lines)
3. 🚧 Extract LeaderboardService (~100 lines)
4. 🚧 Final cleanup and documentation

Notes

• Used proven “Copy-Delegate-Validate” pattern (100% success rate on 4/4 extractions)
• No breaking changes to existing functionality
• All test suites remain green
• Service is injectable for testing
• Callback-based architecture maintains decoupling

Related Files

• TournamentRoundLifecycleService.kt - New service
• TournamentRoundLifecycleServiceTest.kt - Comprehensive tests
• LiveScoringViewModel.kt - Updated delegation
• ActiveScoringScreen.kt - Service wiring
• Multiple test infrastructure files updated

Tags

god-class-refactoring service-extraction livescoringviewmodel tournament-sync multi-device testing