nc_program_manager/.paul/phases/11-refactor/11-02-SUMMARY.md
dtrentin bd17ea46e5 feat(11-refactor): extract ArgParser, fix error handling, remove dead code
Phase 11 complete:
- ArgParser.cs: CLI parsing extracted from Program.cs (pure static method)
- Program.cs: no static state; Scarica/Invia take explicit InputArgs param
- Program.cs: try/finally with connected flag — fixes connection leak on exception
- Program.cs: PrintErrors helper surfaces CncResult.Errors on every failure
- AesCrypt.cs: deleted (dead code, zero references)
- NcProgramManager.csproj: AesCrypt.cs → ArgParser.cs

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-05-18 00:01:32 +02:00

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---
phase: 11-refactor
plan: 02
subsystem: cli
tags: [error-handling, refactor, connection-management]
requires:
- phase: 11-01
provides: "Scarica/Invia with explicit InputArgs parameter — enables this plan's refactor"
provides:
- try/finally disconnect guarantee in Scarica and Invia
- PrintErrors helper — surfaces CncResult.Errors on every failure
- Connection leak bug fixed (catch block previously had no disconnect)
affects: []
tech-stack:
added: []
patterns: ["try/finally with connected flag for resource cleanup after async connect"]
key-files:
created: []
modified: [Program.cs]
key-decisions:
- "connected flag (bool) preferred over nested try — simpler than tracking state across multiple early returns"
- "PrintErrors prints to stdout before VediErrore — operator sees machine detail then error code"
patterns-established:
- "Resource cleanup pattern: bool connected = false; try { ... connected = true; } finally { if (connected) Disconnect(); }"
duration: ~10min
started: 2026-05-18T00:00:00Z
completed: 2026-05-18T00:00:00Z
---
# Phase 11 Plan 02: Scarica/Invia error handling refactor
**Fixed connection leak in Scarica/Invia (try/finally with `connected` flag); `CncResult.Errors` now printed before every error code.**
## Performance
| Metric | Value |
|--------|-------|
| Duration | ~10min |
| Tasks | 2 completed |
| Files modified | 1 |
## Acceptance Criteria Results
| Criterion | Status | Notes |
|-----------|--------|-------|
| AC-1: Disconnect always runs after connect | Pass | `finally { if (connected) DisconnectAsync() }` in both methods |
| AC-2: No manual disconnect inside try | Pass | Zero `DisconnectAsync` calls inside try blocks — verified by grep |
| AC-3: CncResult errors printed on failure | Pass | `PrintErrors(result.Errors)` called at all 8 CncResult failure sites |
## Files Created/Modified
| File | Change | Purpose |
|------|--------|---------|
| `Program.cs` | Modified | try/finally pattern, `connected` flag, `PrintErrors` helper added |
## Decisions Made
| Decision | Rationale | Impact |
|----------|-----------|--------|
| `bool connected` flag over nested try | Simpler than inner try; clearly marks connect/disconnect boundary | Easy to read, no double-catch complexity |
| `PrintErrors` before `VediErrore` | Operator sees machine-level detail first, then summary code | Better diagnostics; no behavior change otherwise |
## Deviations from Plan
None — plan executed exactly as written.
## Next Phase Readiness
**Ready:**
- Phase 11 complete — `Program.cs` clean, `ArgParser` isolated, errors surfaced
- Phase 12 (docs-cli) can proceed: README needs full CLI param table
**Concerns:** None.
**Blockers:** None.
---
*Phase: 11-refactor, Plan: 02*
*Completed: 2026-05-18*