/**
 * 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 { IMediaElement } from "../../../compat/browser_compatibility_types";
import { MediaError } from "../../../errors";
import isNullOrUndefined from "../../../utils/is_null_or_undefined";
import type { CancellationSignal } from "../../../utils/task_canceller";

/**
 * @param {HTMLMediaElement} mediaElement
 * @param {Function} onError
 * @param {Object} cancelSignal
 */
export default function listenToMediaError(
  mediaElement: IMediaElement,
  onError: (error: MediaError) => void,
  cancelSignal: CancellationSignal,
): void {
  if (cancelSignal.isCancelled()) {
    return;
  }

  mediaElement.addEventListener("error", onMediaError);
  cancelSignal.register(() => {
    mediaElement.removeEventListener("error", onMediaError);
  });

  function onMediaError(): void {
    const mediaError = mediaElement.error;
    let errorCode: number | undefined;
    let errorMessage: string | undefined;
    if (!isNullOrUndefined(mediaError)) {
      errorCode = mediaError.code;
      errorMessage = mediaError.message;
    }

    switch (errorCode) {
      case 1:
        errorMessage =
          errorMessage ??
          "The fetching of the associated resource was aborted by the user's request.";
        return onError(new MediaError("MEDIA_ERR_ABORTED", errorMessage));
      case 2:
        errorMessage =
          errorMessage ??
          "A network error occurred which prevented the media from being " +
            "successfully fetched";
        return onError(new MediaError("MEDIA_ERR_NETWORK", errorMessage));
      case 3:
        errorMessage =
          errorMessage ?? "An error occurred while trying to decode the media resource";
        return onError(new MediaError("MEDIA_ERR_DECODE", errorMessage));
      case 4:
        errorMessage =
          errorMessage ?? "The media resource has been found to be unsuitable.";
        return onError(new MediaError("MEDIA_ERR_SRC_NOT_SUPPORTED", errorMessage));
      default:
        errorMessage =
          errorMessage ?? "The HTMLMediaElement errored due to an unknown reason.";
        return onError(new MediaError("MEDIA_ERR_UNKNOWN", errorMessage));
    }
  }
}