/*
 * 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.iotdb.db.protocol.rest.handler;

import org.apache.iotdb.commons.auth.AuthException;
import org.apache.iotdb.db.auth.AuthorityChecker;
import org.apache.iotdb.db.protocol.rest.model.ExecutionStatus;
import org.apache.iotdb.db.queryengine.plan.statement.Statement;
import org.apache.iotdb.rpc.TSStatusCode;

import javax.ws.rs.core.Response;
import javax.ws.rs.core.SecurityContext;

public class AuthorizationHandler {

  public Response checkAuthority(SecurityContext securityContext, Statement statement) {
    String userName = securityContext.getUserPrincipal().getName();
    try {
      if (!AuthorityChecker.checkAuthorization(statement, userName)) {
        return Response.ok()
            .entity(
                new ExecutionStatus()
                    .code(TSStatusCode.NO_PERMISSION.getStatusCode())
                    .message(TSStatusCode.NO_PERMISSION.name()))
            .build();
      }
    } catch (AuthException e) {
      return Response.ok()
          .entity(
              new ExecutionStatus()
                  .message(e.getMessage())
                  .code(Response.Status.BAD_REQUEST.getStatusCode()))
          .build();
    }
    return null;
  }
}
