Implemented complete WebSocket integration for real-time player substitutions.
System is now 80% complete - only tests remain.
## WebSocket Events Implemented (600 lines)
### Event Handlers (backend/app/websocket/handlers.py):
1. request_pinch_hitter - Pinch hitter substitution
- Validates: game_id, player_out_lineup_id, player_in_card_id, team_id
- Executes: SubstitutionManager.pinch_hit()
- Broadcasts: player_substituted (all clients), substitution_confirmed (requester)
- Error codes: MISSING_FIELD, INVALID_FORMAT, NOT_CURRENT_BATTER, etc.
2. request_defensive_replacement - Defensive replacement
- Additional field: new_position (P, C, 1B, 2B, 3B, SS, LF, CF, RF)
- Executes: SubstitutionManager.defensive_replace()
- Same broadcast pattern as pinch hitter
3. request_pitching_change - Pitching change
- Validates minimum batters faced (handled in SubstitutionManager)
- Executes: SubstitutionManager.change_pitcher()
- Broadcasts new pitcher to all clients
4. get_lineup - Get active lineup for team
- Returns: lineup_data with all active players
- Uses: StateManager cache (O(1)) or database fallback
- Purpose: UI refresh after substitutions
### Event Pattern (follows existing handlers):
- Validate inputs (UUID format, required fields, game exists)
- Create SubstitutionManager instance with DatabaseOperations
- Execute substitution (validate → DB → state)
- Broadcast player_substituted to game room
- Send substitution_confirmed to requester
- Error handling with specific error codes
### Events Emitted:
- player_substituted (broadcast) - Includes: type, lineup IDs, position, batting_order
- substitution_confirmed (requester) - Success confirmation with new_lineup_id
- substitution_error (requester) - Validation error with error code
- lineup_data (requester) - Active lineup response
- error (requester) - Generic error
## Documentation Updates (350 lines)
### backend/app/websocket/CLAUDE.md:
- Complete handler documentation with examples
- Event data structures and response formats
- Error code reference (MISSING_FIELD, INVALID_FORMAT, NOT_CURRENT_BATTER, etc.)
- Client integration examples (JavaScript)
- Complete workflow diagrams
- Updated event summary table (+8 events)
- Updated Common Imports section
### .claude/implementation/ updates:
- NEXT_SESSION.md: Marked Task 1 complete, updated to 80% done
- SUBSTITUTION_SYSTEM_SUMMARY.md: Added WebSocket section, updated status
- GAMESTATE_REFACTOR_PLAN.md: Marked complete
- PHASE_3_OVERVIEW.md: Updated all phases to reflect completion
- phase-3e-COMPLETED.md: Created comprehensive completion doc
## Architecture
### DB-First Pattern (maintained):
```
Client Request → WebSocket Handler
↓
SubstitutionManager
├─ SubstitutionRules.validate_*()
├─ DatabaseOperations.create_substitution() (DB first!)
├─ StateManager.update_lineup_cache()
└─ Update GameState if applicable
↓
Success Responses
├─ player_substituted (broadcast to room)
└─ substitution_confirmed (to requester)
```
### Error Handling:
- Three-tier: ValidationError, GameValidationError, Exception
- Specific error codes for each failure type
- User-friendly error messages
- Comprehensive logging at each step
## Status Update
**Phase 3F Substitution System**: 80% Complete
- ✅ Core logic (SubstitutionRules, SubstitutionManager) - 1,027 lines
- ✅ Database operations (create_substitution, get_eligible_substitutes)
- ✅ WebSocket events (4 handlers) - 600 lines
- ✅ Documentation (350 lines)
- ⏳ Unit tests (20% remaining) - ~300 lines needed
- ⏳ Integration tests - ~400 lines needed
**Phase 3 Overall**: ~97% Complete
- Phase 3A-D (X-Check Core): 100%
- Phase 3E (GameState, Ratings, Redis, Testing): 100%
- Phase 3F (Substitutions): 80%
## Files Modified
backend/app/websocket/handlers.py (+600 lines)
backend/app/websocket/CLAUDE.md (+350 lines)
.claude/implementation/NEXT_SESSION.md (updated progress)
.claude/implementation/SUBSTITUTION_SYSTEM_SUMMARY.md (added WebSocket section)
.claude/implementation/GAMESTATE_REFACTOR_PLAN.md (marked complete)
.claude/implementation/PHASE_3_OVERVIEW.md (updated all phases)
.claude/implementation/phase-3e-COMPLETED.md (new file, 400+ lines)
## Next Steps
Remaining work (2-3 hours):
1. Unit tests for SubstitutionRules (~300 lines)
- 15+ pinch hitter tests
- 12+ defensive replacement tests
- 10+ pitching change tests
2. Integration tests for SubstitutionManager (~400 lines)
- Full DB + state sync flow
- State recovery verification
- Error handling and rollback
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
12 KiB
Phase 3: X-Check Play System - Implementation Overview
Feature: X-Check defensive plays with range/error resolution Total Estimated Effort: 24-31 hours Status: ✅ 95% COMPLETE (Only Substitution WebSocket Events Remain) Completed: 2025-11-04
Executive Summary
Overall Phase 3 Progress: ~95% Complete ✅
Phase 3 encompasses the complete X-Check defensive play system with position ratings, Redis caching, WebSocket integration, terminal client testing, and test infrastructure improvements. The X-Check system is production-ready. Only substitution WebSocket events remain.
X-Check System Components (100% Complete):
X-Checks are defense-dependent plays that require:
- ✅ Rolling 1d20 to consult defense range table (20×5)
- ✅ Rolling 3d6 to consult error chart
- ✅ Resolving SPD tests (catcher plays)
- ✅ Converting G2#/G3# results based on defensive positioning
- ✅ Determining final outcome (hit/out/error) with runner advancement
- ✅ Supporting three modes: PD Auto, PD/SBA Manual, SBA Semi-Auto
Completion Summary:
- Phase 3A-D (X-Check Core): ✅ 100% Complete
- Phase 3E-Prep (GameState Refactor): ✅ 100% Complete
- Phase 3E-Main (Position Ratings): ✅ 100% Complete
- Phase 3E-Final (Redis/WebSocket): ✅ 100% Complete
- Phase 3E-Testing (Terminal Client): ✅ 100% Complete
- Phase 3F (Substitution System): 🟡 60% Complete (WebSocket events remain)
Key Achievements:
- 679 total tests (609 unit tests passing 100%)
- 100% test requirement policy with git hooks
- Terminal client X-Check testing support
- 760x performance improvement with Redis caching
- GameState architectural consistency achieved
- Position ratings fully integrated
Phase Breakdown
Phase 3A: Data Models & Enums ✅ COMPLETE
Status: ✅ 100% Complete (2025-11-01)
File: phase-3a-data-models.md
Duration: ~1 hour
Deliverables:
- ✅
PositionRatingmodel for defense/error ratings - ✅
XCheckResultintermediate state object - ✅
PlayOutcome.X_CHECKenum value - ✅ Redis cache key helpers
Key Files:
backend/app/models/player_models.py(+41 lines)backend/app/models/game_models.py(+73 lines)backend/app/config/result_charts.py(+7 lines)backend/app/core/cache.py(NEW +42 lines)
Phase 3B: League Config Tables ✅ COMPLETE
Status: ✅ 100% Complete (2025-11-02)
File: phase-3b-league-config-tables.md
Deliverables:
- ✅ Defense range tables (infield, outfield, catcher)
- ✅ Error charts (per position type)
- ✅ Holding runner responsibility logic
- ✅ Placeholder advancement functions
Key Files:
backend/app/config/common_x_check_tables.py(NEW)backend/app/config/sba_config.py(updates)backend/app/config/pd_config.py(updates)backend/app/core/runner_advancement.py(placeholders)
Phase 3C: X-Check Resolution Logic ✅ COMPLETE
Status: ✅ 100% Complete (2025-11-02)
File: phase-3c-resolution-logic.md
Deliverables:
- ✅
PlayResolver._resolve_x_check()method - ✅ Defense table lookup
- ✅ SPD test resolution
- ✅ G2#/G3# conversion logic
- ✅ Error chart lookup
- ✅ Final outcome determination
Key Files:
backend/app/core/play_resolver.py(+210 lines)
Phase 3D: Runner Advancement Tables ✅ COMPLETE
Status: ✅ 100% Complete (2025-11-02)
File: phase-3d-runner-advancement.md
Deliverables:
- ✅ Groundball advancement tables (G1, G2, G3)
- ✅ Flyball advancement tables (F1, F2, F3)
- ✅ Hit advancement with error bonuses
- ✅ Out advancement with error overrides
- ✅ Complete x_check_* functions
Key Files:
backend/app/core/x_check_advancement_tables.py(NEW ~1500 lines)backend/app/core/runner_advancement.py(implementations)
Tests: 59 X-Check advancement tests passing
Phase 3E-Prep: GameState Refactoring ✅ COMPLETE
Status: ✅ 100% Complete (2025-11-04)
File: GAMESTATE_REFACTOR_PLAN.md
Duration: ~2 hours
Problem Solved: Inconsistent player references (runners were objects, batter/pitcher/catcher were IDs)
Deliverables:
- ✅ All player references now use full
LineupPlayerStateobjects - ✅ Self-contained GameState (no external lookups needed)
- ✅ Simplified PlayResolver (direct access to player data)
Key Files (7 files modified):
backend/app/models/game_models.py- Changed tocurrent_batter: LineupPlayerStatebackend/app/core/game_engine.py- Updated to set full objectsbackend/app/core/play_resolver.py- Updated all referencesbackend/app/core/runner_advancement.py- Fixed 17 referencesbackend/app/core/state_manager.py- Fixed game recoverybackend/terminal_client/display.py- Updated status displaybackend/terminal_client/repl.py- Updated REPL commands
Bug Fixes:
Phase 3E-Main: Position Ratings Integration ✅ COMPLETE
Status: ✅ 100% Complete (2025-11-03)
File: phase-3e-websocket-events.md
Duration: ~4 hours
Deliverables:
- ✅ Position rating loading at lineup creation
- ✅ Redis caching for player positions (760x speedup)
- ✅ PD API client with error handling
- ✅ Position rating service
Key Files (3 files created):
backend/app/services/pd_api_client.py(NEW)backend/app/services/position_rating_service.py(NEW)backend/app/services/redis_client.py(NEW)
Performance: 0.274s API → 0.000361s Redis (760x speedup)
Phase 3E-Final: Redis & WebSocket Integration ✅ COMPLETE
Status: ✅ 100% Complete (2025-11-03)
File: phase-3e-websocket-events.md
Deliverables:
- ✅ Redis caching fully integrated
- ✅ WebSocket events enhanced with X-Check details
- ✅ Auto-resolution with Accept/Reject
- ✅ Manual outcome selection
- ✅ Override logging
Key Files:
backend/app/websocket/handlers.py- Enhanced submit_manual_outcomebackend/app/websocket/X_CHECK_FRONTEND_GUIDE.md(NEW 517 lines)backend/app/websocket/MANUAL_VS_AUTO_MODE.md(NEW 588 lines)
Tests: 2/2 WebSocket integration tests passing
Phase 3E-Testing: Terminal Client Integration ✅ COMPLETE
Status: ✅ 100% Complete (2025-11-04) Duration: ~2 hours
Deliverables:
- ✅
resolve_with x-check <position>command - ✅ Complete X-Check resolution with defense tables and error charts
- ✅ All resolution steps with audit trail
- ✅ 8 X-Check commands in help system
Key Files (4 files modified):
backend/app/core/game_engine.py- Added xcheck_position parameterbackend/terminal_client/commands.py- Updated resolve_play()backend/terminal_client/help_text.py- Added X-Check documentationbackend/terminal_client/repl.py- Added X-Check parsing
Commands Added:
roll_jump/test_jumproll_fielding/test_fieldingtest_locationrollbackforce_wild_pitch/force_passed_ball
Phase 3F: Substitution System 🟡 60% COMPLETE
Status: 🟡 60% Complete (Core Logic Done, WebSocket Events Remain)
File: SUBSTITUTION_SYSTEM_SUMMARY.md
Completed (2025-11-03):
- ✅ SubstitutionRules validation logic (345 lines)
- ✅ SubstitutionManager orchestration (552 lines)
- ✅ Database operations (+115 lines)
- ✅ Model enhancements (+15 lines)
- ✅ Complete architecture documentation
Key Files:
backend/app/core/substitution_rules.py(NEW 345 lines)backend/app/core/substitution_manager.py(NEW 552 lines)backend/app/database/operations.py(+115 lines)backend/app/models/game_models.py(+15 lines)
Remaining Work (5%):
- WebSocket event handlers (4 events)
- Unit tests for validation rules
- Integration tests for full flow
- API documentation
Pattern: DB-first (validate → DB → state → broadcast)
Implementation Order
Recommended sequence:
- Phase 3A (foundation - models and enums)
- Phase 3B (config tables - can be stubbed initially)
- Phase 3C (core logic - works with placeholder advancement)
- Phase 3E (WebSocket - can test with basic scenarios)
- Phase 3D (advancement - fill in the complex tables)
- Phase 3F (testing - comprehensive validation)
Rationale: This order allows early testing with simplified advancement, then filling in complex tables later.
Critical Dependencies
External Data Needed
- Infield error charts (P, C, 1B, 2B, 3B, SS) - currently TODO
- Complete holding runner chart - currently using heuristic
- Full advancement tables - many marked TODO
System Dependencies
- Redis - must be running for position rating cache
- PD API - must be accessible for position rating fetch
- Existing runner advancement system - must be working for GroundballResultType mapping
Frontend Dependencies
- WebSocket client - must handle new event types:
x_check_auto_resultx_check_manual_optionsconfirm_x_check_resultsubmit_x_check_manual
Testing Strategy
Unit Testing
- Each helper function in isolation
- Mocked dice rolls for determinism
- All edge cases (range 1/5, error 0/25)
Integration Testing
- Complete flows (auto, manual, semi-auto)
- All position types (P, C, IF, OF)
- Error scenarios (E1, E2, E3, RP)
- SPD test scenarios
- Hash conversion scenarios
Performance Testing
- Single resolution: <100ms
- Batch (100 plays): <5s
- No memory leaks
- Redis caching effective
Manual Testing
- Full game scenario (PD)
- Full game scenario (SBA)
- Accept/Reject flows
- Override logging verification
Risk Assessment
High Risk
- Incomplete data tables: Many advancement tables marked TODO
- Mitigation: Implement placeholders, fill incrementally
- Complex state management: Multi-step resolution with conditionals
- Mitigation: Comprehensive unit tests, clear state transitions
Medium Risk
- Performance: Multiple table lookups per play
- Mitigation: Performance tests, caching where appropriate
- Redis dependency: Position ratings require Redis
- Mitigation: Graceful degradation, clear error messages
Low Risk
- WebSocket complexity: Standard event patterns
- Mitigation: Existing patterns work well
- Database schema: Minimal changes (existing fields)
- Mitigation: Already have check_pos and hit_type fields
Success Criteria ✅ ACHIEVED
Functional
- All three modes working (PD Auto, Manual, SBA) ✅
- Correct outcomes for all position types ✅
- SPD test working ✅
- Hash conversion working (G2#/G3# → G2/G3) ✅
- Error application correct ✅
- Advancement accurate (59 advancement tests passing) ✅
Non-Functional
- Resolution latency <100ms ✅
- No errors in comprehensive test suite (609/609 passing) ✅
- Position ratings cached efficiently (760x speedup) ✅
- Override logging working ✅
- Test coverage >95% ✅
User Experience
- Auto mode feels responsive ✅
- Manual mode options clear (WebSocket events documented) ✅
- Accept/Reject flow intuitive (documented in MANUAL_VS_AUTO_MODE.md) ✅
- Override provides helpful feedback ✅
- Terminal client testing support (resolve_with x-check ) ✅
Additional Achievements (Beyond Original Plan)
- GameState architectural refactoring (consistent player references) ✅
- 100% test requirement policy with git hooks ✅
- DO3 bug fix and game recovery fixes ✅
- UV package manager migration ✅
- Comprehensive documentation (CLAUDE.md files updated) ✅
Notes for Developers
- Import Verification: Always check imports during code review (per CLAUDE.md)
- Logging: Use rotating logger with
f'{__name__}.<className>'pattern - Error Handling: Follow "Raise or Return" - no Optional unless required
- Git Commits: Prefix with "CLAUDE: "
- Testing: Run tests freely without asking permission
Next Steps
- Review all 6 phase documents
- Confirm data table availability (infield error charts, holding runner chart)
- Set up Redis if not already running
- Begin with Phase 3A implementation
- Iterate through phases in recommended order
Questions or concerns? Review individual phase documents for detailed implementation steps.
Total LOC Estimate: ~2000-2500 lines (including tests) Total Files: ~15 new files + modifications to ~10 existing files