/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.streampark.console.base.interceptor;

import org.apache.streampark.common.util.AssertUtils;
import org.apache.streampark.common.util.FileUtils;
import org.apache.streampark.console.base.exception.ApiAlertException;

import org.springframework.stereotype.Component;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.multipart.MultipartHttpServletRequest;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import java.util.Map;

@Component
public class UploadFileTypeInterceptor implements HandlerInterceptor {

  @Override
  public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
      throws Exception {
    if (request instanceof MultipartHttpServletRequest) {
      MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request;
      Map<String, MultipartFile> files = multipartRequest.getFileMap();
      for (String file : files.keySet()) {
        MultipartFile multipartFile = multipartRequest.getFile(file);
        AssertUtils.state(multipartFile != null);
        boolean fileType = FileUtils.isJarFileType(multipartFile.getInputStream());
        if (!fileType) {
          throw new ApiAlertException("illegal file type, Only standard jar files supported");
        }
      }
    }
    return true;
  }

  @Override
  public void postHandle(
      HttpServletRequest request,
      HttpServletResponse response,
      Object handler,
      ModelAndView modelAndView)
      throws Exception {
    HandlerInterceptor.super.postHandle(request, response, handler, modelAndView);
  }

  @Override
  public void afterCompletion(
      HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex)
      throws Exception {
    HandlerInterceptor.super.afterCompletion(request, response, handler, ex);
  }
}
