first start

tools/.gitignore

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+# Miscellaneous
+*.class
+*.log
+*.pyc
+*.swp
+.DS_Store
+.atom/
+.buildlog/
+.history
+.svn/
+
+# IntelliJ related
+*.iml
+*.ipr
+*.iws
+.idea/
+
+# The .vscode folder contains launch configuration and tasks you configure in
+# VS Code which you may wish to be included in version control, so this line
+# is commented out by default.
+.vscode/
+
+# Flutter/Dart/Pub related
+**/doc/api/
+**/ios/Flutter/.last_build_id
+.dart_tool/
+.flutter-plugins
+.flutter-plugins-dependencies
+.packages
+.pub-cache/
+.pub/
+/build/
+
+# Web related
+lib/generated_plugin_registrant.dart
+
+# Symbolication related
+app.*.symbols
+
+# Obfuscation related
+app.*.map.json
+
+# Android Studio will place build artifacts here
+/android/app/debug
+/android/app/profile
+/android/app/release
+
+# Linux related
+AppDir
+appimage-builder-cache
+*.AppImage

tools/pubspec.lock

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+# Generated by pub
+# See https://dart.dev/tools/pub/glossary#lockfile
+packages:
+  charcode:
+    dependency: transitive
+    description:
+      name: charcode
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.3.1"
+  collection:
+    dependency: transitive
+    description:
+      name: collection
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.15.0"
+  path:
+    dependency: transitive
+    description:
+      name: path
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.8.1"
+  source_span:
+    dependency: transitive
+    description:
+      name: source_span
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.8.1"
+  string_scanner:
+    dependency: transitive
+    description:
+      name: string_scanner
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.1.0"
+  term_glyph:
+    dependency: transitive
+    description:
+      name: term_glyph
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.2.0"
+  yaml:
+    dependency: "direct main"
+    description:
+      name: yaml
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.1.0"
+sdks:
+  dart: ">=2.13.0 <3.0.0"

tools/pubspec.yaml

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+name: butterfly_tools
+environment:
+  sdk: ">=2.13.0 <3.0.0"
+dependencies: 
+  yaml: ^3.1.0

tools/set_version.dart

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+import 'dart:io';
+
+Future<void> main(List<String> args) async {
+  // Get the version from args
+  if (args.length != 1) {
+    print("Please provide the version number as the first argument");
+    exit(1);
+  }
+  var version = args[0];
+  // Update the version in the pubspec.yaml
+  File pubspec = new File('app/pubspec.yaml');
+  String content = await pubspec.readAsString();
+  // Get last version from pubspec.yaml
+  RegExp exp = new RegExp(r'^version:\s(.+)\+(.+)', multiLine: true);
+  Iterable<Match> matches = exp.allMatches(content);
+  if (matches.length != 1) {
+    print("Could not find the version in the pubspec.yaml");
+    exit(1);
+  }
+  var lastVersion = matches.first.group(0) ?? '';
+  print(lastVersion);
+  // Get build number from lastVersion
+  var lastBuildNumber = lastVersion.split('+')[1];
+  var newBuildNumber = (int.parse(lastBuildNumber) + 1).toString();
+
+  var newVersion = '$version+$newBuildNumber';
+  // Update the version in the pubspec.yaml
+  content = content.replaceAll(lastVersion, 'version: $newVersion');
+
+  await pubspec.writeAsString(content);
+  print(
+      "Updating the version in the pubspec.yaml from $lastVersion to $newVersion");
+}