// Copyright (c) 2012, 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 '../command.dart';
import '../log.dart' as log;
import '../solver.dart';

/// Handles the `get` pub command.
class GetCommand extends PubCommand {
  @override
  String get name => 'get';
  @override
  String get description => "Get the current package's dependencies.";
  @override
  String get docUrl => 'https://dart.dev/tools/pub/cmd/pub-get';
  @override
  bool get isOffline => argResults.flag('offline');
  @override
  String get argumentsDescription => '';

  GetCommand() {
    argParser.addFlag(
      'offline',
      help: 'Use cached packages instead of accessing the network.',
    );

    argParser.addFlag(
      'dry-run',
      abbr: 'n',
      negatable: false,
      help: "Report what dependencies would change but don't change any.",
    );

    argParser.addFlag(
      'enforce-lockfile',
      negatable: false,
      help:
          'Enforce pubspec.lock. '
          'Fail `pub get` if the current `pubspec.lock` '
          'does not exactly specify a valid resolution of `pubspec.yaml` '
          'or if any content hash of a hosted package has changed.\n'
          'Useful for CI or deploying to production.',
    );

    argParser.addFlag(
      'precompile',
      help: 'Build executables in immediate dependencies.',
    );

    argParser.addFlag('packages-dir', hide: true);

    argParser.addFlag(
      'example',
      defaultsTo: true,
      help: 'Also run in `example/` (if it exists).',
      hide: true,
    );

    argParser.addOption(
      'directory',
      abbr: 'C',
      help: 'Run this in the directory <dir>.',
      valueHelp: 'dir',
    );
  }

  @override
  Future<void> runProtected() async {
    if (argResults.wasParsed('packages-dir')) {
      log.warning(
        log.yellow(
          'The --packages-dir flag is no longer used and does nothing.',
        ),
      );
    }

    await entrypoint.acquireDependencies(
      SolveType.get,
      dryRun: argResults.flag('dry-run'),
      precompile: argResults.flag('precompile'),
      enforceLockfile: argResults.flag('enforce-lockfile'),
    );

    final example = entrypoint.example;
    if ((argResults.flag('example')) && example != null) {
      await example.acquireDependencies(
        SolveType.get,
        dryRun: argResults.flag('dry-run'),
        precompile: argResults.flag('precompile'),
        summaryOnly: true,
        enforceLockfile: argResults.flag('enforce-lockfile'),
      );
    }
  }
}