Archery Apprentice Documentation

view-model-refactoring-progress

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ViewModel Refactoring Progress

Last Updated: 2025-10-09 Overall Progress: 70% Complete Status: 🟢 On Track

Progress Overview

Completion Metrics

  • Services Extracted: 3/5 (60%)
  • Lines Extracted: 1,218 lines
  • Lines Removed: 254 lines (deduplication + delegation)
  • Test Coverage Added: 25 new tests (Oct 9)
  • ViewModel Size: 2,134 lines (down from 2,808)
  • Reduction Progress: 24% (target: 32%)
  • Estimated Time to Completion: 1-2 weeks

Completed Services ✅

1. TournamentSyncService (Oct 5, 2025)

  • Lines Extracted: 556 lines
  • Status: ✅ Complete
  • Tests: All passing
  • Pattern Validated: Copy-delegate-validate

2. ScoreConflictResolutionService (Oct 5, 2025)

  • Lines Extracted: 262 lines
  • Status: ✅ Complete
  • Tests: All passing
  • Pattern Validated: Service delegation

3. EndCompletionService (Oct 6, 2025)

  • Lines Extracted: 400 lines
  • Status: ✅ Complete
  • Tests: 40 tests passing
  • Pattern Validated: Lifecycle-aware services

4. Code Deduplication (Oct 7, 2025)

  • Lines Removed: 109 lines
  • Status: ✅ Complete
  • Impact: Eliminated duplicate retry logic
  • Pattern: Delegation over duplication

5. StateFlow Delegation (Oct 9, 2025)

  • Lines Removed: 145 lines
  • Status: ✅ Complete
  • Impact: Single source of truth for tournament sync state
  • Pattern: StateFlow delegation

6. Test Coverage Expansion (Oct 9, 2025)

  • Tests Added: 25 tests
  • Status: ✅ Complete
  • Coverage: RoundViewModel 50.99% → >60%
  • Files: RoundViewModelHelperMethodsTest, RoundViewModelInputValidationTest
  • Impact: +2% architecture progress, +1% testing coverage

7. Lifecycle Fixes (Oct 9, 2025)

  • Status: ✅ Complete
  • Impact: Fixed memory leak risk in EndCompletionService
  • Pattern: Suspend functions for lifecycle control

Remaining Services 🔄

4. TournamentRoundLifecycleService

  • Estimated Lines: ~200 lines
  • Status: 🔲 Not Started
  • Priority: HIGH
  • Estimated Time: 3 days
  • Functionality:
    • Round initialization for tournaments
    • Round completion handling
    • State transitions (NOT_STARTED → IN_PROGRESS → COMPLETED)
    • Participant setup and validation

5. StatisticsAggregationService

  • Estimated Lines: ~150 lines
  • Status: 🔲 Not Started
  • Priority: HIGH
  • Estimated Time: 2 days
  • Functionality:
    • Real-time statistics calculation
    • Leaderboard entry updates
    • Trend detection and analysis
    • Performance metrics aggregation

Quality Metrics

Build Stability

  • Build Success Rate: 100%
  • Test Success Rate: 100%
  • All Tests Passing: ✅
    • RoundViewModel: 169 tests
    • EndCompletionService: 40 tests
    • TournamentSyncService: All tests
    • ScoreConflictResolutionService: All tests

Code Quality

  • Code Deduplication: Complete
  • StateFlow Delegation: Complete
  • Test Coverage: 99% overall
  • Lifecycle Management: Properly implemented
  • Pattern Consistency: Established and documented

Timeline

  • Started: October 5, 2025
  • Current Date: October 9, 2025
  • Days Elapsed: 4 days (excluding weekends)
  • Estimated Completion: October 20-25, 2025
  • Status: 🟢 On Schedule

Patterns Established

1. Copy-Delegate-Validate

Proven extraction pattern for service separation:

  1. Copy code to new service
  2. Delegate from ViewModel to service
  3. Validate all tests pass
  4. Remove duplicate code

2. StateFlow Delegation

For shared state management:

  • Service owns StateFlow
  • ViewModel delegates to service StateFlow
  • Single source of truth
  • No state duplication

3. Lifecycle-Aware Services

For coroutine management:

  • Use suspend functions instead of internal scopes
  • Caller controls lifecycle
  • Work stops when ViewModel cleared
  • No memory leaks

4. Focused Test Organization

For maintainability:

  • Split large test classes by function
  • Shared base class for setup
  • Clear functional grouping
  • Easier navigation and execution

Next Steps

Immediate (This Week)

  1. Continue RoundViewModel test coverage (target 70%+)
  2. Test createParticipantScoreSummaries
  3. Test participant-scoped selectors

Short-term (Next Week)

  1. Extract TournamentRoundLifecycleService (~200 lines, 3 days)
  2. Extract StatisticsAggregationService (~150 lines, 2 days)
  3. Final ViewModel cleanup and consolidation

Documentation

  1. Update LIVESCORINGVM_ANALYSIS.md
  2. Update architecture diagrams
  3. Document service interaction patterns
  4. Update TECH_DEBT.md status

Success Criteria

Target Metrics

  • Reduce LiveScoringViewModel to <2,000 lines (Currently: 2,134)
  • Final target: ~1,900 lines (coordinator role only)
  • Maintain 100% test pass rate ✅
  • No regressions in functionality ✅
  • Build stability maintained ✅
  • Pattern consistency established ✅

Quality Gates

  • All extracted services have comprehensive tests ✅
  • Code deduplication complete ✅
  • StateFlow delegation implemented ✅
  • Test coverage improved ✅
  • Final 2 services extracted
  • Documentation updated
  • Final cleanup complete

Risk Assessment

Current Risks: 🟢 LOW

  • Service Extraction: Pattern proven, low risk
  • Test Coverage: Comprehensive, all passing
  • Build Stability: 100% success rate
  • Timeline: On track for 1-2 week completion

Mitigation Strategies

  • Continue incremental extraction approach
  • Maintain test-first methodology
  • Document all pattern decisions
  • Regular progress reviews

Tags

viewmodel refactoring progress architecture testing

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