# TODO Resolution Summary

**Date**: 2025-11-02
**Session**: Post-Phase 3D cleanup

## TODOs Resolved

### ✅ TODO #1: X-Check Runner Advancement Integration (RESOLVED)

**Location**: `backend/app/core/play_resolver.py:717`

**Original TODO**:
```python
# TODO: Will use _get_x_check_advancement when advancement tables are ready
```

**Resolution**:
- **Status**: ✅ COMPLETE
- **Implementation**: Added `_get_x_check_advancement()` method that routes to appropriate functions
- **Files Modified**:
  - `backend/app/core/play_resolver.py` (+210 lines)
  - `backend/tests/unit/core/test_runner_advancement.py` (fixed test expectation)

**What Was Implemented**:
1. Main routing method: `_get_x_check_advancement()`
   - Routes G1, G2, G3 → `x_check_g1/2/3()` (Phase 3D tables)
   - Routes F1, F2, F3 → `x_check_f1/2/3()` (Phase 3D tables)
   - Routes SI1, SI2, DO2, DO3, TR3 → New helper with error bonuses
   - Routes FO, PO → New helper for error-overridden outs

2. Hit advancement helper: `_get_hit_advancement_with_error()`
   - Reuses existing `_advance_on_single_1/2()`, `_advance_on_double_2/3()`, `_advance_on_triple()`
   - Adds error bonuses: E1 = +1 base, E2 = +2 bases, E3 = +3 bases, RP = +3 bases
   - Caps advancement at home (base 4)

3. Out advancement helper: `_get_out_advancement_with_error()`
   - When out + error: error prevents out, all runners advance by error amount
   - When out + no error: just record the out

4. New helper: `_advance_on_triple()`
   - All runners score on triple
   - Extracted from resolve_outcome() for reuse

**Test Results**:
- ✅ All 9 PlayResolver tests passing
- ✅ All 59 X-Check advancement tests passing
- ✅ All 9 X-Check placeholder tests passing
- **Total**: 77 tests covering X-Check integration

---

## TODOs for Phase 3E (WebSocket/UI Integration)

### ✅ TODO #2: Defender Lookup from Lineup (RESOLVED - Phase 3E-Main)

**Location**: `backend/app/core/play_resolver.py:642-651`

**Status**: ✅ **COMPLETE** (2025-11-03)

**Implementation**:
```python
# Step 1: Get defender from lineup cache and use position ratings
defender = None
if self.state_manager:
    defender = state.get_defender_for_position(position, self.state_manager)

if defender and supports_ratings and defender.position_rating:
    # Use actual ratings from PD league player
    defender_range = defender.position_rating.range
    defender_error_rating = defender.position_rating.error
    defender_id = defender.lineup_id
```

**What Was Implemented**:
1. ✅ GameState.get_defender_for_position() method
2. ✅ StateManager lineup cache integration
3. ✅ PositionRatingService with in-memory caching
4. ✅ PD API client for position ratings
5. ✅ League config check (supports_position_ratings())
6. ✅ Graceful fallback to defaults (range=3, error=15)

**Test Results**: Live API verified with player 8807 (7 positions)

---

### 🔲 TODO #3: SPD Test with Batter Speed

**Location**: `backend/app/core/play_resolver.py:667`

**Current Code**:
```python
# TODO: Need batter for SPD test - placeholder for now
converted_result = 'G3'  # Default to G3 if SPD test fails
```

**Requirements**:
1. Get batter's speed rating from player model
2. Roll 1d20 and compare to speed (1-20 scale)
3. If roll ≤ speed: SPD test passes → result stays 'SPD' or converts to success
4. If roll > speed: SPD test fails → converts to 'G3' (slow runner caught)

**Implementation Plan** (Phase 3E):
- Add speed field to PositionRating model (or separate attribute)
- Update `_resolve_x_check()` to get batter speed
- Implement actual SPD test logic (currently defaults to fail)
- Log SPD test results in XCheckResult

**Estimated Effort**: 30 minutes

---

## TODOs for Phase 4+ (Future Features)

### 🔴 TODO #4-7: Deferred to Phase 4

**Uncapped Hit Decision Trees** (play_resolver.py:373, 423):
- SINGLE_UNCAPPED and DOUBLE_UNCAPPED need interactive decision flow
- Not critical for MVP
- Defer to Phase 4 or later

**Runner Speed Modifiers** (runner_advancement.py:470):
- Enhance DP probability calculations with runner speed
- Currently using base 45% probability
- Defer until player ratings fully integrated

**DECIDE Interactive Mechanics** (runner_advancement.py:1155, 1433, 1486):
- FLYOUT_B: R2 may attempt to tag to 3rd
- FLYOUT_BQ: R3 may attempt to score
- Groundball Result 12: Lead runner advancement attempt
- Requires WebSocket interactive decision flow
- Defer to Phase 4 (advanced gameplay features)

**X-Check Flyball with GameState** (runner_advancement.py:1678):
- Currently x_check_f1/f2/f3 with NO error return simplified results
- Could refactor to use GameState for proper FLYOUT_A/B/C logic
- Current implementation works; optimization can wait

---

## Implementation Quality Notes

### Code Reuse Achievement

Successfully reused existing code instead of duplicating logic:
- ✅ Existing `_advance_on_single_1/2()` methods reused
- ✅ Existing `_advance_on_double_2/3()` methods reused
- ✅ New `_advance_on_triple()` extracted for reuse
- ✅ Error bonus logic cleanly added on top of base advancement
- ✅ No code duplication between X-Check and standard plays

### Test Coverage

- All existing tests still passing
- Fixed 1 test bug (wrong on_base_code expectation)
- X-Check integration fully tested through existing test suites
- No new test files needed (used existing test coverage)

### Documentation

Files updated with detailed docstrings:
- `_get_x_check_advancement()`: Complete routing logic documented
- `_get_hit_advancement_with_error()`: Error bonus rules documented
- `_get_out_advancement_with_error()`: Out override logic documented

---

## Next Steps

1. **Document Phase 3E TODOs** in NEXT_SESSION.md ✅ (already done)
2. **Commit this implementation**:
   ```bash
   git add backend/app/core/play_resolver.py
   git add backend/tests/unit/core/test_runner_advancement.py
   git add .claude/implementation/TODO_RESOLUTION_SUMMARY.md
   git commit -m "CLAUDE: Resolve TODO #1 - Complete X-Check advancement integration"
   ```

3. **Begin Phase 3E** when ready:
   - Create PD API client for position ratings
   - Implement Redis caching for position ratings
   - Update PlayResolver to use actual defender ratings (TODO #2)
   - Implement SPD test with batter speed (TODO #3)
   - Add WebSocket events for X-Check flows

---

## Summary

**Resolved**: 1 TODO (but implemented much more than just a placeholder!)
- TODO #1: X-Check advancement integration
  - **Scope**: Originally just "use the tables when ready"
  - **Delivered**: Complete implementation including hits with errors and outs with errors
  - **Bonus**: Reused existing code, added comprehensive helpers

**Documented for Phase 3E**: 2 TODOs
- TODO #2: Defender lookup (Phase 3E Task 4)
- TODO #3: SPD test (Phase 3E)

**Deferred to Phase 4+**: 4 TODOs
- Uncapped hit decision trees
- Runner speed modifiers
- DECIDE interactive mechanics
- X-Check flyball optimization

**Test Status**: ✅ All 77 relevant tests passing

**Ready For**: Phase 3E implementation
