# 5. API Specification

基于技术栈中选择的REST API风格，创建OpenAPI 3.0规范：

## OpenAPI 3.0规范（修订）

```yaml
openapi: 3.0.0
info:
  title: shadcn管理后台API
  version: 1.0.0
  description: 基于Hono框架的RESTful API，支持用户认证和权限管理
servers:
  - url: http://localhost:8080/api
    description: 本地开发环境（8080端口）
  - url: https://your-domain.com:8080/api
    description: 生产环境（8080端口）

components:
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: JWT

  schemas:
    User:
      type: object
      properties:
        id:
          type: string
          format: uuid
        email:
          type: string
          format: email
        name:
          type: string
        role:
          type: string
          enum: [admin, user]
        status:
          type: string
          enum: [active, inactive, suspended]
        createdAt:
          type: string
          format: date-time
        updatedAt:
          type: string
          format: date-time

    AuthResponse:
      type: object
      properties:
        user:
          $ref: '#/components/schemas/User'
        token:
          type: string
        expiresIn:
          type: integer

    ErrorResponse:
      type: object
      properties:
        error:
          type: object
          properties:
            code:
              type: string
            message:
              type: string
            details:
              type: object

paths:
  /auth/login:
    post:
      summary: 用户登录
      tags: [认证]
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                email:
                  type: string
                  format: email
                password:
                  type: string
      responses:
        '200':
          description: 登录成功
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/AuthResponse'
        '401':
          description: 认证失败
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'

  /auth/register:
    post:
      summary: 用户注册
      tags: [认证]
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                email:
                  type: string
                  format: email
                password:
                  type: string
                name:
                  type: string
      responses:
        '201':
          description: 注册成功
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/AuthResponse'
        '400':
          description: 请求参数错误
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'

  /users:
    get:
      summary: 获取用户列表
      tags: [用户管理]
      security:
        - bearerAuth: []
      parameters:
        - name: page
          in: query
          schema:
            type: integer
            default: 1
        - name: limit
          in: query
          schema:
            type: integer
            default: 20
      responses:
        '200':
          description: 用户列表
          content:
            application/json:
              schema:
                type: object
                properties:
                  users:
                    type: array
                    items:
                      $ref: '#/components/schemas/User'
                  total:
                    type: integer
                  page:
                    type: integer
                  limit:
                    type: integer
        '401':
          description: 未授权
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
```

## 基于hono/client的RPC方式

**后端API路由定义：**
```typescript
// apps/api/src/routes/index.ts
export const app = new Hono()
  .route('/auth', authRoutes)
  .route('/users', userRoutes);

export type AppType = typeof app;
```

**前端类型安全调用：**
```typescript
// apps/admin/src/lib/api-client.ts
import { hc } from 'hono/client';
import type { AppType } from '@api/routes'; // 直接从后端导入类型

export const apiClient = hc<AppType>('http://localhost:8080');

// 类型安全的API调用
const response = await apiClient.auth.login.$post({
  json: { email: 'user@example.com', password: 'password123' }
});
const data = await response.json(); // 自动类型推断
```

## Zod Schema独立配置

**共享Zod Schema定义：**
```typescript
// packages/shared/src/schemas/index.ts
export const userSchema = {
  create: z.object({
    email: z.string().email('请输入有效的邮箱地址'),
    name: z.string().min(1, '姓名不能为空'),
    password: z.string().min(6, '密码至少6位'),
    role: z.enum(['admin', 'user']).default('user'),
  }),

  update: z.object({
    email: z.string().email('请输入有效的邮箱地址').optional(),
    name: z.string().min(1, '姓名不能为空').optional(),
    role: z.enum(['admin', 'user']).optional(),
    status: z.enum(['active', 'inactive', 'suspended']).optional(),
  }).partial(),
};
```