/*
    * Copyright 2012-2017 CodeLibs Project and the Others.
    *
    * 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 org.codelibs.fess.helper;
  
  import java.time.ZonedDateTime;
  import java.time.format.DateTimeFormatter;
  
  import javax.annotation.PostConstruct;
  
  import org.codelibs.fess.mylasta.action.FessUserBean;
  import org.codelibs.fess.util.ComponentUtil;
  import org.dbflute.optional.OptionalThing;
  import org.lastaflute.web.util.LaRequestUtil;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  /**
   * @author shinsuke
   *
   */
  public class ActivityHelper {
      private Logger logger = null;
  
      protected String loggerName = "fess.log.audit";
  
      @PostConstruct
      public void init() {
          logger = LoggerFactory.getLogger(loggerName);
      }
  
      public void login(final OptionalThing<FessUserBean> user) {
          final StringBuilder buf = new StringBuilder(100);
          buf.append("action:");
          buf.append(Action.LOGIN);
          buf.append('\t');
          buf.append("user:");
          buf.append(user.map(u -> u.getUserId()).orElse("-"));
          log(buf);
      }
  
      public void logout(final OptionalThing<FessUserBean> user) {
          final StringBuilder buf = new StringBuilder(100);
          buf.append("action:");
          buf.append(Action.LOGOUT);
          buf.append('\t');
          buf.append("user:");
          buf.append(user.map(u -> u.getUserId()).orElse("-"));
          log(buf);
      }
  
      public void access(final OptionalThing<FessUserBean> user, final String path, final String execute) {
          final StringBuilder buf = new StringBuilder(100);
          buf.append("action:");
          buf.append(Action.ACCESS);
          buf.append('\t');
          buf.append("user:");
          buf.append(user.map(u -> u.getUserId()).orElse("-"));
          buf.append('\t');
          buf.append("path:");
          buf.append(path);
          buf.append('\t');
          buf.append("execute:");
          buf.append(execute);
          log(buf);
      }
  
      private void log(final StringBuilder buf) {
          buf.append('\t');
          buf.append("ip:");
          buf.append(getClientIp());
          buf.append('\t');
          buf.append("time:");
          buf.append(DateTimeFormatter.ISO_INSTANT.format(ZonedDateTime.now()));
          logger.info(buf.toString());
      }
  
      protected static String getClientIp() {
          return LaRequestUtil.getOptionalRequest().map(req -> ComponentUtil.getViewHelper().getClientIp(req)).orElse("-");
      }
  
      protected enum Action {
          LOGIN, LOGOUT, ACCESS;
      }
  
      public void setLoggerName(final String loggerName) {
          this.loggerName = loggerName;
     }
 }