/**
 * Copyright 2015 CANAL+ Group
 *
 * 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 type { IMediaKeySystemAccess, IMediaKeys } from "../browser_compatibility_types";

/**
 * Simple implementation of the MediaKeySystemAccess EME API.
 *
 * All needed arguments are given to the constructor
 * @class CustomMediaKeySystemAccess
 */
export default class CustomMediaKeySystemAccess implements IMediaKeySystemAccess {
  /**
   * @param {string} _keyType - type of key system (e.g. "widevine" or
   * "com.widevine.alpha").
   * @param {Object} _mediaKeys - MediaKeys implementation
   * @param {Object} _configuration - Configuration accepted for this
   * MediaKeySystemAccess.
   */
  constructor(
    private readonly _keyType: string,
    private readonly _mediaKeys: IMediaKeys,
    private readonly _configuration: MediaKeySystemConfiguration,
  ) {}

  /**
   * @returns {string} - current key system type (e.g. "widevine" or
   * "com.widevine.alpha").
   */
  get keySystem(): string {
    return this._keyType;
  }

  /**
   * @returns {Promise.<Object>} - Promise wrapping the MediaKeys for this
   * MediaKeySystemAccess. Never rejects.
   */
  public createMediaKeys(): Promise<IMediaKeys> {
    return new Promise((res) => res(this._mediaKeys));
  }

  /**
   * @returns {Object} - Configuration accepted for this MediaKeySystemAccess.
   */
  public getConfiguration(): MediaKeySystemConfiguration {
    return this._configuration;
  }
}