Future _installDriver()

in packages/web_drivers/lib/chrome_driver_installer.dart [67:105]

31 lines of code
6 McCabe index (conditional complexity)


  Future<void> _installDriver() async {
    // If this method is called, clean the previous installations.
    if (isInstalled) {
      installation.deleteSync(recursive: true);
    }

    // Figure out which driver version to install if it's not given during
    // initialization.
    if (chromeDriverVersion.isEmpty) {
      final int chromeVersion = await _querySystemChromeVersion();

      if (chromeVersion < 74) {
        throw Exception('Unsupported Chrome version: $chromeVersion');
      }

      final YamlMap browserLock = DriverLock.instance.configuration;
      final YamlMap chromeDrivers = browserLock['chrome'];
      final String? chromeDriverVersion = chromeDrivers[chromeVersion];
      if (chromeDriverVersion == null) {
        throw Exception(
          'No known chromedriver version for Chrome version $chromeVersion.\n'
          'Known versions are:\n${chromeDrivers.entries.map((e) => '${e.key}: ${e.value}').join('\n')}',
        );
      } else {
        this.chromeDriverVersion = chromeDriverVersion;
      }
    }

    try {
      driverDownload = await _downloadDriver();
    } catch (e) {
      throw Exception(
          'Failed to download chrome driver $chromeDriverVersion. $e');
    } finally {
      client.close();
    }

    await _uncompress();
  }