# Sprint 54 Kickoff - MCP Integration Fixes

**Sprint Duration:** TBD
**Sprint Goal:** Achieve clean compilation and restore MCP integration functionality
**Previous Sprint:** Sprint 53 - Polyglot AST Feature Flags (70% error reduction achieved)

## Sprint Objective

Complete the polyglot AST feature implementation by fixing the remaining 34 compilation errors in MCP integration files. All errors stem from a single root cause and can be systematically resolved.

## Background

Sprint 53 successfully implemented the polyglot AST feature flag system with comprehensive documentation. The work achieved:
- ✅ Feature flag system (polyglot-ast meta-feature + 7 language features)
- ✅ CSharpMapper and RubyMapper implementations
- ✅ Complete documentation (4 guides, 1200+ lines)
- ✅ 70% error reduction (114 → 34 errors)

## Root Cause of Remaining Errors

All 34 remaining errors share the same cause:

**Issue:** MCP integration files attempt to access fields on AstItem as if it were a struct, but AstItem is an enum with variants.

**Example:**
```rust
// ❌ BROKEN: Trying to access fields on enum
let kind = item.kind;
let name = item.name;
let complexity = item.complexity;
```

**Solution:**
```rust
// ✅ CORRECT: Pattern match on enum variants
let (kind, name) = match item {
    AstItem::Function { name, .. } => ("function", name.clone()),
    AstItem::Struct { name, .. } => ("struct", name.clone()),
    AstItem::Enum { name, .. } => ("enum", name.clone()),
    AstItem::Trait { name, .. } => ("trait", name.clone()),
    AstItem::Impl { type_name, .. } => ("impl", type_name.clone()),
    AstItem::Use { path, .. } => ("use", path.clone()),
    AstItem::Module { name, .. } => ("module", name.clone()),
    AstItem::Import { module, .. } => ("import", module.clone()),
};
```

## Sprint 54 Task Breakdown

### Phase 1: MCP Integration Fixes (Priority: HIGH)

**Estimated Time:** 45-60 minutes

#### Task 1.1: Fix java_tools.rs
- **File:** `server/src/mcp_integration/java_tools.rs`
- **Errors:** ~12
- **Pattern:** Convert `.kind`, `.name`, `.complexity` field access to pattern matching
- **Lines Affected:** 128, 133, 138, and similar patterns

**Implementation Steps:**
1. Create helper function `extract_item_info(item: &AstItem) -> (String, String, u32)`
2. Replace all field access with helper function calls
3. Run `cargo check` to verify
4. Run tests: `cargo test --lib java_tools`

#### Task 1.2: Fix scala_tools.rs
- **File:** `server/src/mcp_integration/scala_tools.rs`
- **Errors:** ~10
- **Pattern:** Same as java_tools.rs

**Implementation Steps:**
1. Reuse or create similar helper function
2. Convert field access patterns
3. Verify with `cargo check`
4. Test: `cargo test --lib scala_tools`

#### Task 1.3: Fix polyglot_tools.rs
- **File:** `server/src/mcp_integration/polyglot_tools.rs`
- **Errors:** ~8
- **Pattern:** Field access + complexity calculations

**Implementation Steps:**
1. Create helper for polyglot-specific needs
2. Handle cross-language scenarios
3. Verify compilation
4. Test: `cargo test --lib polyglot_tools`

#### Task 1.4: Fix Remaining Files
- **Files:** Various (4-6 errors total)
- **Pattern:** Miscellaneous type issues

### Phase 2: Verification & Testing (Priority: HIGH)

**Estimated Time:** 30 minutes

#### Task 2.1: Clean Compilation
```bash
cargo check --lib
# Expected: 0 errors ✅
```

#### Task 2.2: Run Full Test Suite
```bash
cargo test --lib
# Document any failures
# Address critical failures only
```

#### Task 2.3: Run Quality Gates
```bash
make lint
# Expected: Pass ✅

cargo check --all-features
# Verify feature flags work correctly
```

### Phase 3: Feature Flag Validation (Priority: MEDIUM)

**Estimated Time:** 20 minutes

#### Task 3.1: Test Language-Specific Builds
```bash
# Java only
cargo build --no-default-features --features="polyglot-java"

# TypeScript + JavaScript
cargo build --no-default-features --features="polyglot-typescript,polyglot-javascript"

# All polyglot languages
cargo build --features="polyglot-ast"
```

#### Task 3.2: Verify Stub Mapper Fallback
```bash
# Build without specific language features
cargo build --no-default-features
# Verify StubMapper is used for unsupported languages
```

### Phase 4: MCP Integration Testing (Priority: MEDIUM)

**Estimated Time:** 20 minutes

#### Task 4.1: Test Java MCP Tools
```bash
# Start MCP server
pmat mcp

# Use MCP client to test:
# - analyze_java_dependencies
# - analyze_java_inheritance
# - Other Java-specific tools
```

#### Task 4.2: Test Scala MCP Tools
```bash
# Test Scala-specific MCP tools
# Verify cross-language analysis works
```

#### Task 4.3: Test Polyglot MCP Tools
```bash
# Test cross-language dependency detection
# Test polyglot code analysis
```

### Phase 5: Documentation & Closeout (Priority: LOW)

**Estimated Time:** 15 minutes

#### Task 5.1: Update Documentation
- Mark Sprint 53 as complete
- Update Sprint 54 status
- Document final metrics

#### Task 5.2: Create Sprint 54 Summary
- Document all fixes applied
- Note any discoveries or issues
- Update CHANGELOG.md

#### Task 5.3: Commit & Push
```bash
git add .
git commit -m "feat(polyglot): Complete MCP integration fixes (Sprint 54)"
git push origin master
```

## Success Criteria

Sprint 54 will be considered **COMPLETE** when:

1. ✅ **Compilation:** 0 errors
2. ✅ **Tests:** All existing tests pass (or failures documented)
3. ✅ **Lint:** `make lint` passes
4. ✅ **Feature Flags:** All language-specific builds work
5. ✅ **MCP Integration:** Java, Scala, and polyglot MCP tools functional
6. ✅ **Documentation:** Sprint summary created

## Risk Assessment

### Low Risks
- ✅ Errors are mechanical, pattern-based
- ✅ Clear fix pattern established
- ✅ No architectural changes needed
- ✅ Incremental testing possible

### Mitigations
- Fix one file at a time
- Run `cargo check` after each fix
- Commit after each successful file fix
- Test MCP tools incrementally

## Dependencies

### Prerequisites
- Sprint 53 commit merged (✅ DONE)
- Development environment set up
- MCP client available for testing (optional but recommended)

### Blocking Issues
- None identified

## Resources

### Documentation References
- [SPRINT-53-REMAINING-WORK.md](../tickets/SPRINT-53-REMAINING-WORK.md) - Detailed error analysis
- [Polyglot AST Feature Flags](../polyglot-ast-feature-flags.md) - Feature flag usage
- [Cross-Language Analysis](../cross-language-analysis.md) - Capabilities overview

### Code References
- `server/src/services/context.rs:85` - AstItem enum definition
- `server/src/ast/polyglot/mod.rs` - NodeKind enum
- `server/src/ast/polyglot/unified_node.rs` - UnifiedNode implementation

## Sprint Metrics (To Be Updated)

- **Starting Errors:** 34
- **Final Errors:** 0 (target)
- **Files Fixed:** TBD
- **Lines Changed:** TBD
- **Test Coverage:** TBD
- **Time to Complete:** TBD

## Notes

### Toyota Way Principles Applied
- **Genchi Genbutsu (現地現物):** Direct code inspection, systematic analysis
- **Kaizen (改善):** Continuous improvement through incremental fixes
- **Jidoka (自働化):** Automated quality checks at each step
- **Muda (無駄):** Eliminate waste by fixing root cause, not symptoms

### Lessons from Sprint 53
1. Feature flags work well for modular language support
2. Documentation-first approach improves clarity
3. Systematic error reduction is effective (70% in one sprint)
4. Pattern matching on enums is safer than field access

## Next Steps After Sprint 54

Once compilation is clean and tests pass:

1. **Sprint 55:** Enhanced polyglot capabilities
   - Add more sophisticated cross-language analysis
   - Implement dependency graph visualization
   - Add support for more languages

2. **Future Consideration:** Extend AstItem enum
   - Add Class, Interface, Method, Property variants
   - Enable richer code analysis
   - Requires careful planning and migration

---

**Sprint 54 Start Date:** TBD
**Estimated Completion:** TBD (1-2 hours total)
**Sprint Owner:** TBD
