feat: 添加API路由和CORS配置

- 为AppController添加api/v1/templates路由前缀
- 改进API响应格式，统一返回ApiResponse结构
- 添加错误处理和类型定义
- 启用CORS支持多平台访问
- 添加服务启动日志信息

src/app.controller.ts

@@ -1,21 +1,66 @@
 import { Body, Controller, Get, Param, Post } from '@nestjs/common';
 import { TemplateService } from './templates/index'
-@Controller()
+import { Template } from './templates/types';
+interface ApiResponse<T = any> {
+  status: boolean | string;
+  data: T;
+  msg: string;
+}
+
+@Controller('api/v1/templates')
 export class AppController {
   constructor(private readonly tempalte: TemplateService) { }
 
   @Get()
-  async getTemplates() {
-    return this.tempalte.getAllTemplates();
+  async getTemplates(): Promise<ApiResponse<Template[]>> {
+    const templates = this.tempalte.getAllTemplates();
+    return {
+      status: true,
+      data: templates,
+      msg: 'success'
+    };
   }
 
   @Get(':templateCode')
-  async getTemplate(@Param('templateCode') templateCode: string) {
-    return this.tempalte.getTemplate(templateCode);
+  async getTemplate(@Param('templateCode') templateCode: string): Promise<ApiResponse<Template | null>> {
+    const template = this.tempalte.getTemplate(templateCode);
+    if (template) {
+      return {
+        status: true,
+        data: template,
+        msg: 'success'
+      };
+    }
+    return {
+      status: false,
+      data: null,
+      msg: '模板不存在'
+    };
   }
 
   @Post()
-  async executeTemplate(@Body('imageUrl') imageUrl: string, @Body('templateCode') templateCode: string) {
-    return this.tempalte.executeTemplate(templateCode, imageUrl);
+  async executeTemplate(@Body('imageUrl') imageUrl: string, @Body('templateCode') templateCode: string): Promise<ApiResponse<string | null>> {
+    try {
+      const result = await this.tempalte.executeTemplate(templateCode, imageUrl);
+      if (result) {
+        return {
+          status: true,
+          data: result,
+          msg: 'success'
+        };
+      }
+      return {
+        status: false,
+        data: null,
+        msg: '执行失败'
+      };
+    } catch (e) {
+      return {
+        status: false,
+        data: null,
+        msg: e.message
+      };
+    }
+
   }
 }

src/main.ts

@@ -3,6 +3,24 @@ import { AppModule } from './app.module';
 
 async function bootstrap() {
   const app = await NestFactory.create(AppModule);
-  await app.listen(process.env.PORT ?? 3000);
+
+  // 启用 CORS 支持多平台访问
+  app.enableCors({
+    origin: true,
+    methods: ['GET', 'POST', 'PUT', 'DELETE', 'OPTIONS'],
+    allowedHeaders: ['Content-Type', 'Authorization', 'X-Requested-With'],
+    credentials: true,
+  });
+
+  // 设置全局前缀
+  app.setGlobalPrefix('');
+
+  const port = process.env.PORT ?? 3000;
+  await app.listen(port);
+
+  console.log(`🚀 多平台小程序后台服务启动成功！`);
+  console.log(`📡 服务地址: http://localhost:${port}`);
+  console.log(`📋 模板管理 API: http://localhost:${port}/api/v1/templates`);
+  console.log(`🔗 Webhook API: http://localhost:${port}/api/v1/webhook`);
 }
 bootstrap();