# Session History: Drawing Module Refactor v1.7.0

**Date:** 2025-12-25
**Session ID:** cdbb2d6b-1fab-459e-8ec9-e864bd30b308

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## Objective
Refactor Drawing module (backend & frontend) to align with `lcbp3-v1.7.0-schema.sql`, specifically for AS Built Drawings.

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## Changes Made

### Backend

#### Entities Updated
| File                                 | Changes                                             |
| ------------------------------------ | --------------------------------------------------- |
| `asbuilt-drawing.entity.ts`          | Added `mainCategoryId`, `subCategoryId` + relations |
| `asbuilt-drawing-revision.entity.ts` | Added `legacyDrawingNumber`                         |

#### New Files Created
| File                                         | Description                         |
| -------------------------------------------- | ----------------------------------- |
| `dto/create-asbuilt-drawing.dto.ts`          | Create AS Built with first revision |
| `dto/create-asbuilt-drawing-revision.dto.ts` | Add revision to existing AS Built   |
| `dto/search-asbuilt-drawing.dto.ts`          | Search with pagination              |
| `asbuilt-drawing.service.ts`                 | CRUD service                        |
| `asbuilt-drawing.controller.ts`              | REST controller                     |

#### Module Updated
- `drawing.module.ts` - Registered new entities, service, controller

#### New API Endpoints
| Method | Path                              | Description  |
| ------ | --------------------------------- | ------------ |
| POST   | `/drawings/asbuilt`               | Create       |
| POST   | `/drawings/asbuilt/:id/revisions` | Add revision |
| GET    | `/drawings/asbuilt`               | List         |
| GET    | `/drawings/asbuilt/:id`           | Get by ID    |
| DELETE | `/drawings/asbuilt/:id`           | Delete       |

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### Frontend

#### Types Updated
| File                                       | Changes                                                             |
| ------------------------------------------ | ------------------------------------------------------------------- |
| `types/drawing.ts`                         | `AsBuiltDrawing` interface: added `mainCategoryId`, `subCategoryId` |
| `types/dto/drawing/asbuilt-drawing.dto.ts` | Added category IDs                                                  |

#### Components Updated
| File                                  | Changes                                                 |
| ------------------------------------- | ------------------------------------------------------- |
| `components/drawings/upload-form.tsx` | AS_BUILT form: added category selectors, title required |
| `components/drawings/list.tsx`        | `projectId` now required prop                           |
| `app/(dashboard)/drawings/page.tsx`   | Added project selector dropdown                         |

#### Hooks Updated
| File                   | Changes                          |
| ---------------------- | -------------------------------- |
| `hooks/use-drawing.ts` | Fixed toast message for AS_BUILT |

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## Verification Results

| Component | Command      | Result    |
| --------- | ------------ | --------- |
| Backend   | `pnpm build` | ✅ Success |
| Frontend  | `pnpm build` | ✅ Success |

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## Notes
- AS Built Drawings use same category structure as Shop Drawings (`shop_drawing_main_categories`, `shop_drawing_sub_categories`)
- No existing data in `asbuilt_drawings` table, no migration needed
- Pre-existing lint warnings (`any` types) in `upload-form.tsx` not addressed in this session
