validateDownloadRequest method

void validateDownloadRequest({ required String manifestUrl, required String fileName, required HlsDownloadOptions options, })

Implementation

void validateDownloadRequest({
  required String manifestUrl,
  required String fileName,
  required HlsDownloadOptions options,
}) {
  final parsed = Uri.tryParse(manifestUrl);
  if (parsed == null ||
      !(parsed.isScheme('http') || parsed.isScheme('https'))) {
    throw const HlsDownloadException(
      code: HlsErrorCode.invalidUrl,
      message: 'manifestUrl must be a valid http(s) URL',
    );
  }

  if (sanitizeFileName(fileName).isEmpty) {
    throw const HlsDownloadException(
      code: HlsErrorCode.invalidFileName,
      message: 'fileName cannot be empty',
    );
  }

  if (options.retryAttempts < 0) {
    throw const HlsDownloadException(
      code: HlsErrorCode.invalidOptions,
      message: 'retryAttempts cannot be negative',
    );
  }

  if (options.outputFileExtension.trim().isEmpty) {
    throw const HlsDownloadException(
      code: HlsErrorCode.invalidOptions,
      message: 'outputFileExtension cannot be empty',
    );
  }

  if (options.outputDirectoryPath != null &&
      options.outputDirectoryPath!.trim().isEmpty) {
    throw const HlsDownloadException(
      code: HlsErrorCode.invalidOptions,
      message: 'outputDirectoryPath cannot be blank',
    );
  }

  final hasBlankHeaderKey = options.customHeaders.keys.any(
    (key) => key.trim().isEmpty,
  );
  if (hasBlankHeaderKey) {
    throw const HlsDownloadException(
      code: HlsErrorCode.invalidOptions,
      message: 'customHeaders cannot contain blank keys',
    );
  }
}