// 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.config;

import com.google.common.base.Ascii;

/** Registry environments. */
public enum RegistryEnvironment {

  /** Production environment. */
  PRODUCTION,

  /** Development environment. */
  ALPHA,

  /** Load/Backup/Restore Testing environment. */
  CRASH,

  /** Local machine environment. */
  LOCAL,

  /** Quality Assurance environment. */
  QA,

  /** Sandbox environment. */
  SANDBOX,

  /**
   * Unit testing environment.
   *
   * <p>This is the default enum value. This is because it's non-trivial to configure the system
   * property that specifies the environment in our unit tests.
   *
   * <p>Do not use this environment outside of unit tests.
   */
  UNITTEST;

  /** Sets this enum as the name of the registry environment. */
  public RegistryEnvironment setup() {
    return setup(SystemPropertySetter.PRODUCTION_IMPL);
  }

  /**
   * Sets this enum as the name of the registry environment using specified {@link
   * SystemPropertySetter}.
   */
  public RegistryEnvironment setup(SystemPropertySetter systemPropertySetter) {
    systemPropertySetter.setProperty(PROPERTY, name());
    return this;
  }

  /** Returns environment configured by system property {@value #PROPERTY}. */
  public static RegistryEnvironment get() {
    return valueOf(Ascii.toUpperCase(System.getProperty(PROPERTY, UNITTEST.name())));
  }

  /** System property for configuring which environment we should use. */
  private static final String PROPERTY = "google.registry.environment";
}