feat: 邮箱冲突检测优化 v1.1.1

- 新增邮箱冲突检测：发送验证码前检查邮箱是否已被注册
- 优化用户体验：避免向已注册邮箱发送无用验证码
- 改进错误处理：返回409 Conflict状态码和明确错误信息
- 更新API文档：重新整理文档结构，突出前端开发要点
- 完善测试用例：添加邮箱冲突检测相关测试
- 版本升级：1.1.0  1.1.1

核心修改：
- src/core/login_core/login_core.service.ts: 在sendEmailVerification方法中添加邮箱存在性检查
- src/business/auth/controllers/login.controller.ts: 正确处理409冲突状态码
- docs/api/api-documentation.md: 重新整理为精简实用的前端开发文档
- docs/api/openapi.yaml: 更新版本和接口描述
- test-register-fix.ps1: 添加邮箱冲突检测测试用例

docs/api/openapi.yaml

@@ -1,8 +1,8 @@
 openapi: 3.0.3
 info:
   title: Pixel Game Server - Auth API
-  description: 像素游戏服务器用户认证API接口文档 - 包含验证码登录功能
-  version: 1.1.0
+  description: 像素游戏服务器用户认证API接口文档 - 包含验证码登录功能和邮箱冲突检测
+  version: 1.1.1
   contact:
     name: API Support
     email: support@example.com
@@ -106,7 +106,7 @@ paths:
       tags:
         - auth
       summary: 用户注册
-      description: 创建新用户账户
+      description: 创建新用户账户。如果提供邮箱，需要先调用发送验证码接口获取验证码。发送验证码接口会自动检查邮箱是否已被注册，避免向已存在邮箱发送验证码。
       operationId: register
       requestBody:
         required: true
@@ -325,7 +325,7 @@ paths:
       tags:
         - auth
       summary: 发送邮箱验证码
-      description: 向指定邮箱发送验证码
+      description: 向指定邮箱发送验证码。如果邮箱已被注册，将返回冲突错误。
       operationId: sendEmailVerification
       requestBody:
         required: true
@@ -354,6 +354,16 @@ paths:
             application/json:
               schema:
                 $ref: '#/components/schemas/ErrorResponse'
+        '409':
+          description: 邮箱已被注册
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ErrorResponse'
+              example:
+                success: false
+                message: "邮箱已被注册，请使用其他邮箱或直接登录"
+                error_code: "SEND_EMAIL_VERIFICATION_FAILED"
         '429':
           description: 发送频率过高
           content:

package.json

@@ -1,7 +1,7 @@
 {
   "name": "pixel-game-server",
-  "version": "1.1.0",
-  "description": "A 2D pixel art game server built with NestJS - 支持验证码登录功能",
+  "version": "1.1.1",
+  "description": "A 2D pixel art game server built with NestJS - 支持验证码登录功能和邮箱冲突检测",
   "main": "dist/main.js",
   "scripts": {
     "dev": "nest start --watch",

src/app.service.ts

@@ -31,7 +31,7 @@ export class AppService {
     
     return {
       service: 'Pixel Game Server',
-      version: '1.1.0',
+      version: '1.1.1',
       status: 'running',
       timestamp: new Date().toISOString(),
       uptime: Math.floor((Date.now() - this.startTime) / 1000),

src/business/auth/controllers/login.controller.ts

@@ -389,6 +389,9 @@ export class LoginController {
       res.status(HttpStatus.OK).json(result);
     } else if (result.error_code === 'TEST_MODE_ONLY') {
       res.status(HttpStatus.PARTIAL_CONTENT).json(result); // 206 Partial Content
+    } else if (result.message?.includes('已被注册') || result.message?.includes('已存在')) {
+      // 邮箱已被注册
+      res.status(HttpStatus.CONFLICT).json(result);
     } else {
       res.status(HttpStatus.BAD_REQUEST).json(result);
     }

src/core/login_core/login_core.service.ts

@@ -516,6 +516,12 @@ export class LoginCoreService {
    * @returns 验证码结果
    */
   async sendEmailVerification(email: string, nickname?: string): Promise<VerificationCodeResult> {
+    // 首先检查邮箱是否已经被注册，避免发送无用的验证码
+    const existingUser = await this.usersService.findByEmail(email);
+    if (existingUser) {
+      throw new ConflictException('邮箱已被注册，请使用其他邮箱或直接登录');
+    }
+
     // 生成验证码
     const verificationCode = await this.verificationService.generateCode(
       email,

src/main.ts

@@ -58,8 +58,8 @@ async function bootstrap() {
   // 配置Swagger文档
   const config = new DocumentBuilder()
     .setTitle('Pixel Game Server API')
-    .setDescription('像素游戏服务器API文档 - 包含用户认证、登录注册、验证码登录等功能')
-    .setVersion('1.1.0')
+    .setDescription('像素游戏服务器API文档 - 包含用户认证、登录注册、验证码登录、邮箱冲突检测等功能')
+    .setVersion('1.1.1')
     .addTag('auth', '用户认证相关接口')
     .addTag('admin', '管理员后台相关接口')
     .addBearerAuth(

test-register-fix.ps1

@@ -6,11 +6,14 @@
 # 2. 用户注册（有邮箱但无验证码）- 应该失败并返回正确错误信息
 # 3. 用户存在性检查 - 应该在验证码验证之前进行，返回"用户名已存在"
 # 4. 邮箱验证码完整流程 - 验证码生成、注册、重复邮箱检查
+# 5. 邮箱冲突检测 - 发送验证码前检查邮箱是否已注册
 #
 # 修复验证：
 # - 用户存在检查现在在验证码验证之前执行
+# - 邮箱冲突检测防止向已注册邮箱发送验证码
 # - 验证码不会因为用户已存在而被无效消费
 # - 错误信息更加准确和用户友好
+# - 返回正确的HTTP状态码（409 Conflict）
 $baseUrl = "http://localhost:3000"
 
 Write-Host "🧪 Testing Register API Fix" -ForegroundColor Green
@@ -100,25 +103,42 @@ if ($result1 -and $result1.success) {
     }
 }
 
-# Test 4: Get verification code and register with email
-Write-Host "`n📋 Get verification code and register with email" -ForegroundColor Yellow
+# Test 4: Email conflict detection test
+Write-Host "`n📋 Email conflict detection test" -ForegroundColor Yellow
 try {
-    $emailResponse = Invoke-RestMethod -Uri "$baseUrl/auth/send-email-verification" -Method POST -Body (@{email = "newuser@test.com"} | ConvertTo-Json) -ContentType "application/json"
+    # First, try to get verification code for a new email
+    $newEmail = "newuser_$(Get-Random)@test.com"
+    $emailResponse = Invoke-RestMethod -Uri "$baseUrl/auth/send-email-verification" -Method POST -Body (@{email = $newEmail} | ConvertTo-Json) -ContentType "application/json"
     
     if ($emailResponse.data.verification_code) {
         $verificationCode = $emailResponse.data.verification_code
         Write-Host "Got verification code: $verificationCode" -ForegroundColor Green
         
+        # Register user with this email
         $result4 = Test-ApiCall -TestName "Register with valid email and verification code" -Url "$baseUrl/auth/register" -Body (@{
             username = "emailuser_$(Get-Random)"
             password = "password123"
             nickname = "Email User"
-            email = "newuser@test.com"
+            email = $newEmail
             email_verification_code = $verificationCode
         } | ConvertTo-Json)
         
         if ($result4 -and $result4.success) {
             Write-Host "✅ PASS: Email registration successful" -ForegroundColor Green
+            
+            # Now test email conflict detection
+            Write-Host "`n📋 Testing email conflict detection" -ForegroundColor Yellow
+            try {
+                $conflictResponse = Invoke-RestMethod -Uri "$baseUrl/auth/send-email-verification" -Method POST -Body (@{email = $newEmail} | ConvertTo-Json) -ContentType "application/json"
+                Write-Host "❌ FAIL: Should have detected email conflict" -ForegroundColor Red
+            } catch {
+                $statusCode = $_.Exception.Response.StatusCode.value__
+                if ($statusCode -eq 409) {
+                    Write-Host "✅ PASS: Email conflict detected (409 status)" -ForegroundColor Green
+                } else {
+                    Write-Host "❌ FAIL: Wrong status code for email conflict ($statusCode)" -ForegroundColor Red
+                }
+            }
         }
     }
 } catch {
@@ -129,5 +149,7 @@ Write-Host "`n🎯 Test Summary" -ForegroundColor Green
 Write-Host "===============" -ForegroundColor Green
 Write-Host "✅ Registration logic has been fixed:" -ForegroundColor White
 Write-Host "   • User existence checked BEFORE verification code validation" -ForegroundColor White
+Write-Host "   • Email conflict detection prevents sending codes to registered emails" -ForegroundColor White
 Write-Host "   • Proper error messages for different scenarios" -ForegroundColor White
-Write-Host "   • Verification codes not wasted on existing users" -ForegroundColor White
+Write-Host "   • Verification codes not wasted on existing users" -ForegroundColor White
+Write-Host "   • Returns 409 Conflict for email/username conflicts" -ForegroundColor White