// Copyright 2018 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.keyring;

import com.google.common.collect.ImmutableList;
import dagger.Binds;
import dagger.Module;
import dagger.Provides;
import google.registry.config.RegistryConfig.Config;
import google.registry.keyring.api.Keyring;
import google.registry.keyring.secretmanager.SecretManagerKeyring;
import jakarta.inject.Singleton;
import java.util.Optional;

/** Dagger module for {@link Keyring} */
@Module
public abstract class KeyringModule {

  @Binds
  @Singleton
  public abstract Keyring provideKeyring(SecretManagerKeyring keyring);

  @Provides
  @Config("cloudSqlInstanceConnectionName")
  public static String provideCloudSqlInstanceConnectionName(Keyring keyring) {
    return keyring.getSqlPrimaryConnectionName();
  }

  @Provides
  @Config("cloudSqlReplicaInstanceConnectionNames")
  public static ImmutableList<String> provideCloudSqlReplicaInstanceConnectionNames(
      Keyring keyring) {
    return ImmutableList.copyOf(keyring.getSqlReplicaConnectionNames());
  }

  @Provides
  @Config("cloudSqlDbInstanceName")
  public static String provideCloudSqlDbInstance(
      @Config("cloudSqlInstanceConnectionName") String instanceConnectionName) {
    // Format of instanceConnectionName: project-id:region:instance-name
    int lastColonIndex = instanceConnectionName.lastIndexOf(':');
    return instanceConnectionName.substring(lastColonIndex + 1);
  }

  @Provides
  @Config("valkeyCertificateAuthority")
  public static Optional<String> provideValkeyCertificateAuthority(Keyring keyring) {
    return Optional.ofNullable(keyring.getValkeyCertificateAuthority());
  }
}
