// Copyright 2017 The Nomulus 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 com.google.common.base.Preconditions.checkArgument;
import static com.google.common.base.Strings.isNullOrEmpty;
import static google.registry.util.CollectionUtils.findDuplicates;

import com.beust.jcommander.Parameter;
import com.beust.jcommander.Parameters;
import com.google.common.base.Joiner;
import com.google.common.collect.ImmutableSet;
import com.google.template.soy.data.SoyMapData;
import google.registry.tools.soy.DomainCreateSoyInfo;
import google.registry.util.StringGenerator;
import java.util.List;
import java.util.Set;
import javax.inject.Inject;

/** A command to create a new domain via EPP. */
@Parameters(separators = " =", commandDescription = "Create a new domain via EPP.")
final class CreateDomainCommand extends MutatingEppToolCommand {

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

  @Parameter(description = "Names of the domains", required = true)
  private List<String> mainParameters;

  @Parameter(
      names = "--period",
      description = "Initial registration period, in years.")
  private Integer period;

  @Parameter(
    names = {"-n", "--nameservers"},
    description = "Comma-separated list of nameservers, up to 13."
  )
  private List<String> ns;

  @Parameter(
      names = {"-r", "--registrant"},
      description = "Domain registrant.",
      required = true)
  private String registrant;

  @Parameter(
      names = {"-a", "--admin"},
      description = "Admin contact.",
      required = true)
  private String admin;

  @Parameter(
      names = {"-t", "--tech"},
      description = "Technical contact.",
      required = true)
  private String tech;

  @Parameter(
      names = {"-p", "--password"},
      description = "Password. Optional, randomly generated if not provided.")
  private String password;

  @Inject
  StringGenerator passwordGenerator;

  private static final int PASSWORD_LENGTH = 16;

  @Override
  protected void initMutatingEppToolCommand() {
    if (isNullOrEmpty(password)) {
      password = passwordGenerator.createString(PASSWORD_LENGTH);
    }
    checkArgument(ns == null || ns.size() <= 13, "There can be at most 13 nameservers.");
    String duplicates = Joiner.on(", ").join(findDuplicates(mainParameters));
    checkArgument(duplicates.isEmpty(), "Duplicate arguments found: '%s'", duplicates);
    Set<String> domains = ImmutableSet.copyOf(mainParameters);

    for (String domain : domains) {
      setSoyTemplate(DomainCreateSoyInfo.getInstance(), DomainCreateSoyInfo.DOMAINCREATE);
      addSoyRecord(
          clientId,
          new SoyMapData(
              "domain", domain,
              "period", period == null ? null : period.toString(),
              "ns", ns,
              "registrant", registrant,
              "admin", admin,
              "tech", tech,
              "password", password));
    }
  }
}