/**
 * Copyright 2015 Google Inc. 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.
 */

import {GoogleAuthOptions, Service} from '@google-cloud/common';
import * as request from 'request';

export interface PackageInfo {
  name: string;
  version: string;
}

export class Debug extends Service {
  options!: GoogleAuthOptions;
  packageInfo!: PackageInfo;

  /**
   * <p class="notice">
   *   **This is an experimental release of Stackdriver Debug.** This API is not
   *   covered by any SLA of deprecation policy and may be subject to backwards
   *   incompatible changes.
   * </p>
   *
   * This module provides Stackdriver Debugger support for Node.js applications.
   * [Stackdriver Debugger](https://cloud.google.com/debug/) is a feature of
   * [Google Cloud Platform](https://cloud.google.com/) that lets you debug your
   * applications in production without stopping or pausing your application.
   *
   * This module provides an agent that lets you automatically enable debugging
   * without changes to your application.
   *
   * @constructor
   * @alias module:debug
   *
   * @resource [What is Stackdriver Debug]{@link
   * https://cloud.google.com/debug/}
   *
   * @param options - [Authentication options](#/docs)
   */
  constructor(options: GoogleAuthOptions, packageJson: {
    name: string; version: string;
  }) {
    if (new.target !== Debug) {
      return new Debug(options, packageJson);
    }

    const config = {
      requestModule: request,
      projectIdRequired: false,
      baseUrl: 'https://clouddebugger.googleapis.com/v2',
      scopes: ['https://www.googleapis.com/auth/cloud_debugger'],
      packageJson
    };

    // TODO: Update Service to provide types
    // TODO: Determine if we should check if `options` is `undefined` or
    //       `null` here and, if so, provide a default value.
    super(config, options);

    // FIXME(ofrobots): We need our own copy of options because Service may
    // default to '{{projectId}}' when options doesn't contain the `projectId`.
    // property. This breaks the SSOT principle. Remove this when
    // https://github.com/GoogleCloudPlatform/google-cloud-node/issues/1891
    // is resolved.
    this.options = options;

    this.packageInfo = {name: packageJson.name, version: packageJson.version};
  }
}