Finish release script

scripts/release.dart

@@ -1,6 +1,13 @@
 import 'dart:io';
 
 Future<void> main(List<String> args) async {
+  final res =
+      await Process.run('git', ['diff-index', '--cached', '--quiet', 'HEAD']);
+  if (res.exitCode != 0) {
+    print('You have staged files, commit or unstage them.');
+    exit(1);
+  }
+
   if (args.isEmpty || !{'patch', 'minor', 'major'}.contains(args[0])) {
     print('Unknown version bump type');
     exit(1);
@@ -33,18 +40,54 @@ Future<void> main(List<String> args) async {
   }
   code++;
 
-  final newVersion = '$major.$minor.$patch+$code';
-
-  confirm('Version looks good? $newVersion');
+  final newVersionName = '$major.$minor.$patch';
+  final newVersionString = '$newVersionName+$code';
 
+  confirm('Version looks good? $newVersionString');
   final updatedPubspec = pubspecContents.replaceFirst(
-      versionMatch.group(0), 'version: $newVersion');
-
+      versionMatch.group(0), 'version: $newVersionString');
   await pubspecFile.writeAsString(updatedPubspec);
+
+  final changelogFile = File('CHANGELOG.md');
+  final changelogContents = await changelogFile.readAsString();
+
+  var thisChangelog =
+      RegExp(r'^## Unreleased$.+?^##[^#]', multiLine: true, dotAll: true)
+          .stringMatch(changelogContents);
+  thisChangelog = thisChangelog.substring(0, thisChangelog.length - 4);
+
+  final date = DateTime.now();
+  final dateString =
+      '${date.year}-${date.month.toString().padLeft(2, '0')}-${date.day.toString().padLeft(2, '0')}';
+  thisChangelog = thisChangelog.replaceFirst(
+      'Unreleased', 'v$newVersionName - $dateString');
+  confirm('Changelog looks good?\n$thisChangelog\n');
+
+  await changelogFile.writeAsString(changelogContents.replaceFirst(
+      'Unreleased', 'v$newVersionName - $dateString'));
+
+  await File('fastlane/metadata/android/en-US/changelogs/$code.txt')
+      .writeAsString(thisChangelog.split('\n').skip(2).join('\n'));
+
+  stdout.write('Running git tag... ');
+  await Process.run('git', ['tag', 'v$newVersionName']);
+  print('done');
+
+  stdout.write('Running git add... ');
+  await Process.run('git', [
+    'add',
+    'CHANGELOG.md',
+    'pubspec.yaml',
+    'fastlane/metadata/android/en-US/changelogs/$code.txt'
+  ]);
+  print('done');
+
+  print(
+      'Review your staged files, commit them with a message of "Release v$newVersionName" push it and finish off with `git push --tags`');
 }
 
 void confirm(String message) {
-  print('$message [y/n]');
+  stdout.write('$message [y/n] ');
 
   switch (stdin.readLineSync()) {
     case 'y':