// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

import 'dart:async';

import 'package:path/path.dart' as p;

import '../command.dart';
import '../executable.dart';
import '../log.dart' as log;
import '../utils.dart';

/// Handles the `global run` pub command.
class GlobalRunCommand extends PubCommand {
  @override
  String get name => 'run';
  @override
  String get description =>
      'Run an executable from a globally activated package.';
  @override
  String get argumentsDescription => '<package>:<executable> [args...]';
  @override
  bool get allowTrailingOptions => false;

  final bool alwaysUseSubprocess;

  GlobalRunCommand({this.alwaysUseSubprocess = false}) {
    argParser.addFlag('enable-asserts', help: 'Enable assert statements.');
    argParser.addFlag('checked', abbr: 'c', hide: true);
    argParser.addMultiOption(
      'enable-experiment',
      help: 'Runs the executable in a VM with the given experiments enabled. '
          '(Will disable snapshotting, resulting in slower startup).',
      valueHelp: 'experiment',
    );
    argParser.addFlag(
      'sound-null-safety',
      help: 'Override the default null safety execution mode.',
      hide: true,
    );
    argParser.addOption('mode', help: 'Deprecated option', hide: true);
  }

  @override
  Future<void> runProtected() async {
    if (argResults.rest.isEmpty) {
      usageException('Must specify an executable to run.');
    }
    if (argResults.wasParsed('sound-null-safety')) {
      dataError('The --(no-)sound-null-safety flag is no longer supported.');
    }

    String package;
    var executable = argResults.rest[0];
    if (executable.contains(':')) {
      final parts = split1(executable, ':');
      package = parts[0];
      executable = parts[1];
    } else {
      // If the package name is omitted, use the same name for both.
      package = executable;
    }

    final args = argResults.rest.skip(1).toList();
    if (p.split(executable).length > 1) {
      usageException('Cannot run an executable in a subdirectory of a global '
          'package.');
    }

    if (argResults.wasParsed('mode')) {
      log.warning('The --mode flag is deprecated and has no effect.');
    }

    final vmArgs = vmArgsFromArgResults(argResults);
    final globalEntrypoint = await globals.find(package);
    final exitCode = await globals.runExecutable(
      globalEntrypoint,
      Executable.adaptProgramName(package, executable),
      args,
      vmArgs: vmArgs,
      enableAsserts:
          argResults.flag('enable-asserts') || argResults.flag('checked'),
      recompile: (executable) => log.errorsOnlyUnlessTerminal(
        () => globalEntrypoint.precompileExecutable(executable),
      ),
      alwaysUseSubprocess: alwaysUseSubprocess,
    );
    overrideExitCode(exitCode);
  }
}