import {
  Injectable,
  NestInterceptor,
  ExecutionContext,
  CallHandler,
} from '@nestjs/common';
import { Observable, map } from 'rxjs';
import { ApiResponse } from '../response-format';

/**
 * 规范返回格式
 */
@Injectable()
export class ResponseInterceptor<T>
  implements NestInterceptor<T, ApiResponse<T>>
{
  intercept(
    context: ExecutionContext,
    next: CallHandler,
  ): Observable<ApiResponse<T>> {
    return next.handle().pipe(
      map((data) => ({
        success: true,
        data,
        message: '操作成功',
      })),
    );
  }
}