build function

Future build(List<String> args)

Injects config file variables into the flutter build -command using --dart-define

Implementation

Future build(List<String> args) async {
  /// Checks that has been given at least one argument (config file name)
  if (args.isEmpty) {
    logError(
        'Usage: flconf build <apk/ios> <config file name> <extra flutter parameters>');
    exit(1);
  }
  final flutterArgs = ['build'];

  /// Checks that the target is given and valid, adds to the arguments
  final target = args.removeAt(0);
  if (!['apk', 'ios'].contains(target)) {
    logError(
        'Usage: flconf build <apk/ios> <config file name> <extra flutter parameters>');
    exit(1);
  }
  flutterArgs.add(target);

  // The name of the config file should be the next part of the command
  final configName = args.removeAt(0);

  /// Loads list of dart defines from the config file
  final defines = await getDartDefines(configName);

  /// combines dart defines and the rest of the arguments
  flutterArgs.addAll([...defines, ...args]);

  /// Starts the flutter build process and listens for output and errors.
  final process = await Process.start('flutter', flutterArgs);

  process.stdout.listen((data) {
    log(utf8.decode(data));
  });

  process.stderr.listen((data) {
    logError(utf8.decode(data));
  });
}