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/*
 * 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.linkis.bml.restful;

import org.apache.linkis.bml.common.BmlAuthorityException;
import org.apache.linkis.bml.common.Constant;
import org.apache.linkis.bml.service.ResourceService;
import org.apache.linkis.server.utils.ModuleUserUtils;

import javax.servlet.http.HttpServletRequest;

import java.text.SimpleDateFormat;
import java.util.Date;

public class RestfulUtils {

  private static final Long SECOND = 1000L;
  private static final Long MINUTE = 60 * SECOND;
  private static final Long HOUR = 60 * MINUTE;
  public static final Long DAY = 24 * HOUR;
  private static final Long MONTH = 30 * DAY;
  private static final Long YEAR = 365 * DAY;

  public static String getUserName(HttpServletRequest request) throws BmlAuthorityException {
    String user;
    try {
      user = ModuleUserUtils.getOperationUser(request);
    } catch (final Exception e) {
      throw new BmlAuthorityException();
    }
    return user;
  }

  /**
   * 用于检查用户user是否有权限对resourceId对应的资源有修改权限
   *
   * @param user 传入的用户名
   * @param resourceId resourceId
   * @param resourceService service服务层
   * @return
   */
  public static boolean canAccessResource(
      String user, String resourceId, ResourceService resourceService) {
    // String realUser = resourceService.getOwner(resourceId);
    // return user.equals(realUser);
    // todo
    return true;
  }

  public static String getExpireTime(Date createTime, String expireType, String expireTime) {

    SimpleDateFormat simpleDateFormat = new SimpleDateFormat(Constant.TIME_FORMAT);
    String retTime = null;

    if ("date".equals(expireType)) {
      return expireTime;
    } else {
      int num = Integer.parseInt(expireTime.substring(0, expireTime.length() - 1));
      switch (expireTime.charAt(expireTime.length() - 1)) {
        case 'y':
          retTime = simpleDateFormat.format(new Date(createTime.getTime() + num * YEAR));
          break;
        case 'M':
          retTime = simpleDateFormat.format(new Date(createTime.getTime() + num * MONTH));
          break;
        case 'd':
          retTime = simpleDateFormat.format(new Date(createTime.getTime() + num * DAY));
          break;
        case 'H':
          retTime = simpleDateFormat.format(new Date(createTime.getTime() + num * HOUR));
          break;
        case 'm':
          retTime = simpleDateFormat.format(new Date(createTime.getTime() + num * MINUTE));
          break;
        default:
          retTime = simpleDateFormat.format(new Date(createTime.getTime() + 10 * DAY));
      }
    }
    return retTime;
  }
}