// 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:io';

import 'package:args/args.dart';
import 'package:stack_trace/stack_trace.dart';
import 'package:update_homebrew/update_homebrew.dart';

void main(List<String> args) async {
  await Chain.capture(() async {
    updateHomeBrew(args);
  }, onError: (error, chain) {
    print(error);
    print(chain.terse);
    exitCode = 1;
  });
}

Future<void> updateHomeBrew(List<String> args) async {
  final parser = ArgParser()
    ..addFlag('dry-run', abbr: 'n')
    ..addOption('revision', abbr: 'r')
    ..addOption('channel', abbr: 'c', allowed: supportedChannels);
  final options = parser.parse(args);
  final dryRun = options['dry-run'] as bool;
  final revision = options['revision'] as String?;
  final channel = options['channel'] as String?;
  if (revision == null || channel == null) {
    print("Usage: update_homebrew.dart -r version -c channel [-n]");
    exitCode = 64;
    return;
  }

  final repository = Directory.current.path;
  if (await writeHomebrewInfo(channel, revision, repository, dryRun)) {
    await runGit(
        ['commit', '-a', '-m', 'Updated $channel channel to version $revision'],
        repository,
        null,
        dryRun);
  } else {
    print("Channel $channel is up to date at version $revision");
  }
}