// Copyright 2016 Google LLC
//
// 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 * as gcpMetadata from 'gcp-metadata';
import * as nock from 'nock';

// In the future _=>true.
function accept(): true {
  return true;
}

export type Validator = (body: {
  client_id: string;
  client_secret: string;
  refresh_token: string;
}) => boolean;

// TODO: Determine if the type of `validator` is correct.
export function oauth2(validator?: Validator): nock.Scope {
  validator = validator || accept;
  return nock('https://oauth2.googleapis.com')
    .post('/token', validator)
    .once()
    .reply(200, {
      refresh_token: 'hello',
      access_token: 'goodbye',
      expiry_date: new Date(9999, 1, 1),
    });
}

// TODO: Determine if the type of `validator` is correct.
export function register(validator?: Validator): nock.Scope {
  validator = validator || accept;
  return nock('https://clouddebugger.googleapis.com')
    .post('/v2/controller/debuggees/register', validator)
    .once()
    .reply(200, {debuggee: {}});
}

export function projectId(reply: string): nock.Scope {
  return nock(gcpMetadata.HOST_ADDRESS)
    .get('/computeMetadata/v1/project/project-id')
    .once()
    .reply(200, reply);
}

export function metadataInstance(): nock.Scope {
  return nock(gcpMetadata.HOST_ADDRESS)
    .get('/computeMetadata/v1/instance')
    .replyWithError({code: 'ENOTFOUND', message: 'nocked request'});
}
