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DDD 架構輔助技能

ddd-architect

Ensure code follows DDD architecture and DAL separation for both frontend and backend. Triggers: DDD, arch, 架構, 新功能, 新模組, new feature, scaffold, 骨架, domain, layer, 分層, structure, 結構, backend, frontend, React, Vue, Python, TypeScript, 前端, 後端, component, 元件.

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DDD 架構輔助技能

描述

確保前後端程式碼遵循 DDD 架構與 DAL 分離原則。

觸發條件

  • 「建立新功能」「新增模組」
  • 「架構檢查」
  • 建立新檔案時自動檢查
  • 「前端架構」「後端架構」

法規依據

  • 憲法:CONSTITUTION.md 第 1、2 條
  • 子法:.github/​bylaws/​ddd-architecture.md

🔧 後端 DDD 結構 (Python/​Go/​Rust)

新功能腳手架

當建立新功能時,自動生成 DDD 結構:

「新增 Order 領域」

生成:
src/
├── Domain/
│   ├── Entities/​Order.py
│   ├── ValueObjects/​OrderId.py
│   ├── Aggregates/​OrderAggregate.py
│   └── Repositories/​IOrderRepository.py
├── Application/
│   ├── UseCases/​CreateOrder.py
│   └── DTOs/​OrderDTO.py
└── Infrastructure/
    └── Persistence/​Repositories/​OrderRepository.py

層級職責

層級職責可依賴
Domain業務規則、Entity、Value Object無外部依賴
ApplicationUse Case、DTO、編排Domain
InfrastructureRepository 實作、外部 APIDomain
PresentationAPI、CLI、UIApplication

⚛️ 前端 DDD 結構 (React/​Vue)

React 專案結構

「新增 User 管理功能 (React)」

生成:
src/
├── domain/
│   ├── models/
│   │   └── User.ts              # Entity 類型定義
│   ├── types/
│   │   └── UserTypes.ts         # Value Object 類型
│   └── rules/
│       └── userValidation.ts    # 純業務規則(無框架依賴)
│
├── application/
│   ├── hooks/
│   │   └── useUser.ts           # 業務邏輯 Hook
│   ├── stores/
│   │   └── userStore.ts         # 狀態管理 (Zustand/​Redux)
│   └── services/
│       └── UserService.ts       # 應用服務(編排)
│
├── infrastructure/
│   ├── api/
│   │   └── userApi.ts           # API Client (fetch/​axios)
│   ├── storage/
│   │   └── userStorage.ts       # LocalStorage/​SessionStorage
│   └── adapters/
│       └── userAdapter.ts       # API Response → Domain Model
│
└── presentation/
    ├── components/
    │   └── UserCard.tsx         # UI 元件
    ├── pages/
    │   └── UserListPage.tsx     # 頁面
    └── layouts/
        └── UserLayout.tsx       # 佈局

Vue 3 專案結構

「新增 Product 管理功能 (Vue)」

生成:
src/
├── domain/
│   ├── models/
│   │   └── Product.ts
│   ├── types/
│   │   └── ProductTypes.ts
│   └── rules/
│       └── productValidation.ts
│
├── application/
│   ├── composables/
│   │   └── useProduct.ts        # Composition API
│   ├── stores/
│   │   └── productStore.ts      # Pinia Store
│   └── services/
│       └── ProductService.ts
│
├── infrastructure/
│   ├── api/
│   │   └── productApi.ts
│   └── adapters/
│       └── productAdapter.ts
│
└── presentation/
    ├── components/
    │   └── ProductCard.vue
    ├── views/
    │   └── ProductListView.vue
    └── layouts/
        └── ProductLayout.vue

前端層級對照

層級ReactVue 3職責
Domainmodels/, types/, rules/同左純 TypeScript,無框架
Applicationhooks/, stores/composables/, stores/業務邏輯封裝
Infrastructureapi/, adapters/同左外部服務對接
Presentationcomponents/, pages/components/, views/UI 元件

🔍 架構違規檢查

後端違規

偵測並警告:

  • ❌ Domain 層導入 Infrastructure
  • ❌ 直接在 Domain 操作資料庫
  • ❌ Application 層直接操作資料庫
  • ❌ Repository 實作放在 Domain 層

前端違規

偵測並警告:

  • ❌ Domain 層導入 React/​Vue(應為純 TypeScript)
  • ❌ 元件直接呼叫 API(應透過 hooks/​composables)
  • ❌ 將業務邏輯寫在元件內
  • ❌ API Response 直接用於 UI(應經過 adapter 轉換)

依賴方向驗證

✅ Presentation → Application → Domain
✅ Infrastructure → Domain (實作介面)
❌ Domain → Infrastructure
❌ Domain → Application
❌ Domain → React/​Vue/框架

📋 檢查範本

後端輸出

🏗️ DDD 架構檢查 (Backend)

✅ 依賴方向正確
✅ DAL 正確分離
⚠️ 警告:
  - src/​Domain/​Services/​UserService.py:15
    導入了 Infrastructure 模組

建議:
  將資料庫操作移至 Repository

前端輸出

🏗️ DDD 架構檢查 (Frontend - React)

✅ Domain 層無框架依賴
✅ API 呼叫正確封裝於 infrastructure/
⚠️ 警告:
  - src/​presentation/​components/​UserCard.tsx:23
    直接呼叫 fetch(),應使用 useUser hook

建議:
  將 API 呼叫移至 src/​application/​hooks/​useUser.ts

🎯 快速生成指令

「建立後端 Order 領域」    → 生成 Python DDD 結構
「建立前端 User 功能」     → 詢問 React/​Vue,生成對應結構
「架構檢查」               → 掃描全專案違規
「前端架構檢查」           → 僅掃描前端

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