/**
 * Copyright 2017 Google Inc. All rights reserved.
 * Modifications copyright (c) Microsoft Corporation.
 *
 * 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 { BrowserContext } from '../../browserContext';
import { CRFrameManager } from '../crFrameManager';
import { Page } from '../crApi';

export class CROverrides {
  private _context: BrowserContext;
  private _geolocation: { longitude?: number; latitude?: number; accuracy?: number; } | null = null;

  constructor(context: BrowserContext) {
    this._context = context;
  }

  async setGeolocation(options: { longitude?: number; latitude?: number; accuracy?: (number | undefined); } | null) {
    if (!options) {
      for (const page of await this._context.pages())
        await (page._delegate as CRFrameManager)._client.send('Emulation.clearGeolocationOverride', {});
      this._geolocation = null;
      return;
    }

    const { longitude, latitude, accuracy = 0} = options;
    if (longitude < -180 || longitude > 180)
      throw new Error(`Invalid longitude "${longitude}": precondition -180 <= LONGITUDE <= 180 failed.`);
    if (latitude < -90 || latitude > 90)
      throw new Error(`Invalid latitude "${latitude}": precondition -90 <= LATITUDE <= 90 failed.`);
    if (accuracy < 0)
      throw new Error(`Invalid accuracy "${accuracy}": precondition 0 <= ACCURACY failed.`);
    this._geolocation = { longitude, latitude, accuracy };
    for (const page of await this._context.pages())
      await (page._delegate as CRFrameManager)._client.send('Emulation.setGeolocationOverride', this._geolocation);
  }

  async _applyOverrides(page: Page): Promise<void> {
    if (this._geolocation)
      await (page._delegate as CRFrameManager)._client.send('Emulation.setGeolocationOverride', this._geolocation);
  }
}