content: /*
   *  Copyright (C) 2019 Alpha Jiang. All rights reserved.
   *
   *  Licensed 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 io.github.alphajiang.hyena.utils;
  
  import org.springframework.web.server.ServerWebExchange;
  
  import java.util.Iterator;
  
  
  public class LoggerHelper {
  
  
      public static String formatEnterLog(ServerWebExchange exh) {
          return ">> " + LoggerHelper.getUserLog(exh, true);
      }
  
      public static String formatEnterLog(ServerWebExchange exh, boolean logParams) {
          return ">> " + LoggerHelper.getUserLog(exh, logParams);
      }
  
      public static String formatLeaveLog(ServerWebExchange exh) {
          return "<< " + LoggerHelper.getUserLog(exh, false);
      }
  
      private static String getUserLog(ServerWebExchange exh, boolean logParams) {
  
          StringBuilder sb = new StringBuilder();
  
  
          if (logParams) {
              sb.append("params = { ");
              boolean firstKey = true;
              Iterator<String> iter = exh.getRequest().getQueryParams().keySet().iterator();
              while (iter.hasNext()) {
                  String k = iter.next();
  
                  if (firstKey) {
                      firstKey = false;
                  } else {
                      sb.append(", ");
                  }
  
                  sb.append(k).append("=[");
                  boolean firstValue = true;
                  for (String v : exh.getRequest().getQueryParams().get(k)) {
                      if (firstValue) {
                          firstValue = false;
                      } else {
                          sb.append(",");
                      }
                      sb.append(v);
                  }
                  sb.append("]");
              }
              sb.append(" } ");
          }
          return sb.toString();
  
      }
  }
  