# Phase 10A — AI-Powered Development: Dishant Progress

**Developer:** Dishant
**Branch:** `cline-dev-dishant`
**Last Updated:** 2026-02-19

---

## Task Status

| Task ID    | Title                        | Status      | Notes                                                        |
|------------|------------------------------|-------------|--------------------------------------------------------------|
| STRUCT-001 | JSON Schema Definition       | COMPLETE    | 8 schemas + validator + tests (33/33 pass)                   |
| STRUCT-002 | Export Engine Core           | COMPLETE    | ProjectExporter + 50 unit tests                              |
| STRUCT-003 | Import Engine Core           | COMPLETE    | ProjectImporter + 55 unit tests incl. round-trip validation  |
| STRUCT-004 | Editor Format Detection      | COMPLETE    | ProjectFormatDetector + 30 unit tests incl. integration      |
| STRUCT-005 | Lazy Loading                 | TODO        | Unblocked by STRUCT-004                                      |
| STRUCT-006 | Save Logic                   | TODO        | Unblocked by STRUCT-005                                      |
| STRUCT-007 | Migration Wizard UI          | TODO        | Unblocked by STRUCT-006                                      |
| STRUCT-008 | Testing and Validation       | TODO        | Unblocked by STRUCT-007                                      |
| STRUCT-009 | Documentation                | TODO        | Unblocked by STRUCT-008                                      |

---

## STRUCT-001 — JSON Schema Definition COMPLETE

**Completed:** 2026-02-18

### What was built

All files under `packages/noodl-editor/src/editor/src/schemas/`:

| File | Schema ID | Describes |
|------|-----------|-----------|
| `project-v2.schema.json` | `https://opennoodl.dev/schemas/project-v2.json` | Root project metadata |
| `component.schema.json` | `https://opennoodl.dev/schemas/component-v2.json` | Component metadata |
| `nodes.schema.json` | `https://opennoodl.dev/schemas/nodes-v2.json` | Node graph definitions |
| `connections.schema.json` | `https://opennoodl.dev/schemas/connections-v2.json` | Connection/wire definitions |
| `registry.schema.json` | `https://opennoodl.dev/schemas/registry-v2.json` | Component index |
| `routes.schema.json` | `https://opennoodl.dev/schemas/routes-v2.json` | URL route definitions |
| `styles.schema.json` | `https://opennoodl.dev/schemas/styles-v2.json` | Global styles + variants |
| `model.schema.json` | `https://opennoodl.dev/schemas/model-v2.json` | Backend data model definitions |

- `validator.ts` — SchemaValidator singleton, per-schema convenience methods, Ajv v8 + ajv-formats
- `index.ts` — re-exports all schemas, validator, TypeScript interfaces
- `tests/schemas/schema-validator.test.ts` — 33 test cases, all passing

### Key decisions

- `additionalProperties: true` on nodes/connections — open-ended by design
- Port type is `oneOf [string, object]` — Noodl uses both formats
- `strict: false` on Ajv — schemas use `description` in `definitions`
- `require()` for `ajv-formats` — avoids TS type conflict

---

## STRUCT-002 — Export Engine Core COMPLETE

**Completed:** 2026-02-19

### What was built

| File | Purpose |
|------|---------|
| `packages/noodl-editor/src/editor/src/io/ProjectExporter.ts` | Core exporter class + legacy types + helpers |
| `packages/noodl-editor/tests/io/ProjectExporter.test.ts` | 50 unit tests |
| `packages/noodl-editor/tests/io/index.ts` | Test barrel export |

### Architecture

`ProjectExporter` is pure — no filesystem access. Takes `LegacyProject`, returns `ExportResult { files[], stats }`.

Output layout:
```
nodegx.project.json
nodegx.routes.json        (conditional)
nodegx.styles.json        (conditional)
components/
  _registry.json
  Header/
    component.json
    nodes.json
    connections.json
```

### Key decisions

1. Pure/filesystem-agnostic — caller writes files
2. Node tree flattening — recursive tree to flat array with parent/children IDs
3. Styles/routes files conditional — only produced when content exists
4. Legacy `stateParamaters` typo normalised to `stateParameters`
5. Metadata split — styles/routes extracted, rest stays in project file
6. Original legacy path preserved in `component.json` for round-trip fidelity
7. Empty `parameters: {}` omitted from output

---

## STRUCT-003 — Import Engine Core COMPLETE

**Completed:** 2026-02-19

### What was built

| File | Purpose |
|------|---------|
| `packages/noodl-editor/src/editor/src/io/ProjectImporter.ts` | Core importer class + helpers |
| `packages/noodl-editor/tests/io/ProjectImporter.test.ts` | 55 unit tests incl. round-trip |

### Architecture

`ProjectImporter` is pure — no filesystem access. Takes `ImportInput` (all file contents), returns `ImportResult { project, warnings }`.

```
ImportInput {
  project: ProjectV2File        (nodegx.project.json)
  registry: RegistryV2File      (components/_registry.json)
  routes?: RoutesV2File         (nodegx.routes.json)
  styles?: StylesV2File         (nodegx.styles.json)
  components: Record<path, { component, nodes, connections }>
}
```

### Key functions exported

| Function | Purpose |
|----------|---------|
| `unflattenNodes(flat)` | Reconstructs recursive legacy node tree from flat NodeV2 array |
| `toLegacyName(componentFile, registryPath)` | Converts v2 path back to legacy name (uses preserved `path` field) |

### Key decisions

1. Pure/filesystem-agnostic — symmetric with ProjectExporter
2. `unflattenNodes` — two-pass: build map, then wire children in order
3. `toLegacyName` — prefers `component.path` (preserved original) for perfect round-trip; falls back to reconstruction
4. `stateParameters` → `stateParamaters` reversal — restores legacy typo
5. Metadata merge — routes/styles merged back into `project.metadata`
6. Non-fatal warnings — component failures collected, not thrown
7. Round-trip validated — 20 round-trip tests covering all data types

### Test coverage (55 tests)

- `unflattenNodes` — 11 cases (empty, single, parent-child, deep nesting, order, field restoration)
- `toLegacyName` — 4 cases (path field, fallback, root, cloud)
- `ProjectImporter.import()` — 20 cases (basic, metadata, variants, components, nodes)
- Round-trip (export → import) — 20 cases (all data types, edge cases)

---

## STRUCT-004 — Editor Format Detection COMPLETE

**Completed:** 2026-02-19

### What was built

| File | Purpose |
|------|---------|
| `packages/noodl-editor/src/editor/src/io/ProjectFormatDetector.ts` | Format detection utility |
| `packages/noodl-editor/tests/io/ProjectFormatDetector.test.ts` | 30 unit + integration tests |

### Architecture

`ProjectFormatDetector` accepts a `DetectorFilesystem` interface (injectable, testable). Supports both async `detect()` and sync `detectSync()`.

Detection logic (priority order):
1. `nodegx.project.json` + `components/_registry.json` → **v2 / high confidence**
2. Either v2 indicator alone → **v2 / medium confidence**
3. `project.json` only → **legacy / high confidence**
4. Nothing found → **unknown / low confidence**
5. Both legacy + v2 → **v2 wins** (migration in progress)

### Key exports

| Export | Purpose |
|--------|---------|
| `ProjectFormatDetector` | Main class |
| `DetectorFilesystem` | Interface for filesystem injection |
| `V2_INDICATORS` | Sentinel filenames for v2 format |
| `LEGACY_INDICATORS` | Sentinel filenames for legacy format |
| `createNodeDetector()` | Factory using Node.js `fs.existsSync` |
| `ProjectFormat` | `'legacy' | 'v2' | 'unknown'` type |
| `FormatDetectionResult` | `{ format, confidence, indicators }` |

### Key decisions

1. Injectable filesystem — no platform singleton dependency, fully testable
2. Supports both sync and async `exists()` — `detectSync()` throws if async fs injected
3. `createNodeDetector()` factory for Node.js/test contexts
4. Scoring system — v2 needs score ≥ 2 (nodegx.project.json=2, registry=2, components dir=1)
5. Errors in `exists()` treated as "not found" — graceful degradation

### Test coverage (30 tests)

- `detect()` — 12 cases (all format combinations, async fs, error handling)
- `detectSync()` — 4 cases (v2, legacy, unknown, throws on async fs)
- Convenience methods — 7 cases (getFormat, isV2, isLegacy)
- Constants — 3 cases
- `createNodeDetector()` integration — 4 cases (real filesystem with tmp dirs)

---

## Decisions and Learnings

- **[2026-02-18]** Ajv v8 + ajv-formats: use `require()` for ajv-formats to avoid TS type conflict with root-level ajv-formats package
- **[2026-02-19]** Legacy `stateParamaters` typo (missing 'e') is real — must be preserved in round-trip. Exporter normalises to `stateParameters`, importer reverses it.
- **[2026-02-19]** `component.path` field is the key to perfect round-trip fidelity — always preserve the original legacy name in the v2 component file
- **[2026-02-19]** `unflattenNodes` needs two passes — first build the node map, then wire children in order using the children ID array
- **[2026-02-19]** Format detection: inject filesystem interface rather than using platform singleton — makes the utility testable without Electron context and usable in Node.js scripts/tests