// Copyright 2016 The Domain Registry Authors. 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 google.registry.tools;

import static java.nio.charset.StandardCharsets.UTF_8;

import com.google.common.io.CharStreams;
import com.google.common.io.Files;

import com.beust.jcommander.Parameter;
import com.beust.jcommander.Parameters;

import google.registry.util.NonFinalForTesting;

import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;

/** A command to execute an arbitrary epp command from file or stdin. */
@Parameters(separators = " =", commandDescription = "Execute an epp command")
final class ExecuteEppCommand extends MutatingEppToolCommand {
  @Parameter(description = "Epp command filename")
  private List<String> mainParameters = new ArrayList<>();

  @Parameter(
      names = {"-c", "--client"},
      description = "Client identifier of the registrar to execute the command as",
      required = true)
  String clientIdentifier;

  @NonFinalForTesting
  private static InputStream stdin = System.in;

  @Override
  protected void initMutatingEppToolCommand() throws IOException {
    if (mainParameters.isEmpty()) {
      addXmlCommand(
          clientIdentifier, CharStreams.toString(new InputStreamReader(stdin, UTF_8)));
    } else {
      for (String command : mainParameters) {
        addXmlCommand(clientIdentifier, Files.toString(new File(command), UTF_8));
      }
    }
  }
}