Organize Dart dependencies and introduce rinf server command

flutter_package/bin/rinf.dart

@@ -8,7 +8,7 @@ import 'src/internet.dart';
 import 'src/common.dart';
 
 Future<void> main(List<String> args) async {
-  // After running `dart run rinf`,
+  // When running `dart run rinf`,
   // Unnecessary two lines of
   //`Building package executable...\nBuilt rinf:rinf.` appear.
   // Remove those before proceeding.
@@ -18,18 +18,19 @@ Future<void> main(List<String> args) async {
   await checkConnectivity();
 
   // Parse CLI arguments and run the corresponding function.
-  final runner = CommandRunner(
+  final commandRunner = CommandRunner(
     'rinf',
-    'Helper commands for building apps with Rust in Flutter.',
+    'Helper commands for building apps using Rust in Flutter.',
     usageLineLength: 80,
-  )
-    ..addCommand(ConfigCommand())
-    ..addCommand(TemplateCommand())
-    ..addCommand(MessageCommand())
-    ..addCommand(WasmCommand());
+  );
+  commandRunner.addCommand(ConfigCommand());
+  commandRunner.addCommand(TemplateCommand());
+  commandRunner.addCommand(MessageCommand());
+  commandRunner.addCommand(WasmCommand());
+  commandRunner.addCommand(ServerCommand());
 
   try {
-    await runner.run(args);
+    await commandRunner.run(args);
   } catch (error) {
     // Print the error gracefully without backtrace.
     print(error.toString().trim().red);
@@ -38,8 +39,7 @@ Future<void> main(List<String> args) async {
 
 class ConfigCommand extends Command {
   final name = 'config';
-  final description = 'Shows current Rinf configuration' +
-      ' resolved from `pubspec.yaml` with defaults applied.';
+  final description = 'Show Rinf configuration resolved from `pubspec.yaml`.';
 
   ConfigCommand() {}
 
@@ -51,7 +51,7 @@ class ConfigCommand extends Command {
 
 class TemplateCommand extends Command {
   final name = 'template';
-  final description = 'Applies Rust template to the current Flutter project.';
+  final description = 'Apply Rust template to the current Flutter project.';
 
   TemplateCommand() {}
 
@@ -63,13 +63,13 @@ class TemplateCommand extends Command {
 
 class MessageCommand extends Command {
   final name = 'message';
-  final description = 'Generates message code from `.proto` files.';
+  final description = 'Generate message code from `.proto` files.';
 
   MessageCommand() {
     argParser.addFlag(
       'watch',
       abbr: 'w',
-      help: 'Continuously watches `.proto` files.',
+      help: 'Continuously watches `.proto` files',
     );
   }
 
@@ -90,13 +90,13 @@ class MessageCommand extends Command {
 
 class WasmCommand extends Command {
   final name = 'wasm';
-  final description = 'Builds the webassembly module for the web.';
+  final description = 'Build the webassembly module for the web.';
 
   WasmCommand() {
     argParser.addFlag(
       'release',
       abbr: 'r',
-      help: 'Builds in release mode.',
+      help: 'Builds in release mode',
     );
   }
 
@@ -109,3 +109,20 @@ class WasmCommand extends Command {
     await buildWebassembly(release);
   }
 }
+
+class ServerCommand extends Command {
+  final name = 'server';
+  final description = 'Show how to run Flutter web server with web headers.';
+
+  ServerCommand() {}
+
+  Future<void> run() async {
+    final commandParts = [
+      'flutter',
+      'run',
+      '--web-header=Cross-Origin-Opener-Policy=same-origin',
+      '--web-header=Cross-Origin-Embedder-Policy=require-corp'
+    ];
+    print(commandParts.join(' ').dim);
+  }
+}

flutter_package/bin/src/common.dart

@@ -20,6 +20,6 @@ void removeCliLines(int lines) {
   for (var i = 0; i < lines; i++) {
     stdout.write('\x1B[1A'); // Move the cursor up one line
     stdout.write('\x1B[2K'); // Clear the line
-    stdout.write('\r'); // Return the cursor to the front
+    stdout.write('\r'); // Move the cursor to the front
   }
 }

flutter_package/bin/src/helpers.dart

@@ -2,7 +2,6 @@ import 'dart:io';
 
 import 'package:package_config/package_config.dart';
 import 'package:yaml/yaml.dart';
-import 'package:chalkdart/chalkstrings.dart';
 
 import 'config.dart';
 import 'message.dart';
@@ -286,30 +285,5 @@ Future<void> buildWebassembly(bool isReleaseMode) async {
   fillingBar.increment();
 
   // Guide the developer how to run Flutter web server with web headers.
-  print('To run the Flutter web server, use:');
-  final commandLineDivider = await getCommandLineDivider();
-  final commandLines = [
-    'flutter run',
-    '--web-header=Cross-Origin-Opener-Policy=same-origin',
-    '--web-header=Cross-Origin-Embedder-Policy=require-corp'
-  ];
-  print(commandLines.join(' ${commandLineDivider}\n').dim);
-}
-
-Future<String> getCommandLineDivider() async {
-  if (Platform.isWindows) {
-    // Windows environment, check further for PowerShell or CMD
-    if (Platform.environment['SHELL'] == null) {
-      // Likely PowerShell environment
-      return '`';
-      // // Likely Command Prompt (cmd.exe)
-      // return "^";
-    } else {
-      // Bash or some other shell
-      return '\\';
-    }
-  } else {
-    // Bash or some other shell
-    return '\\';
-  }
+  print('To get the Flutter web server command, run `rinf server`');
 }

flutter_package/bin/src/internet.dart

@@ -1,7 +1,14 @@
-import 'package:internet_connection_checker/internet_connection_checker.dart';
+import 'dart:io';
 
 var isInternetConnected = false;
 
 Future<void> checkConnectivity() async {
-  isInternetConnected = await InternetConnectionChecker().hasConnection;
+  try {
+    final result = await InternetAddress.lookup('pub.dev');
+    if (result.isNotEmpty && result[0].rawAddress.isNotEmpty) {
+      isInternetConnected = true;
+    }
+  } on SocketException catch (_) {
+    isInternetConnected = false;
+  }
 }

flutter_package/bin/src/progress.dart

@@ -1,8 +1,7 @@
-// CLI progress bar copied from
+// CLI progress bar copied and modified from
 // https://github.com/RohitEdathil/ConsoleBars
 
 import 'dart:async';
-import 'dart:io';
 import 'common.dart';
 
 class ProgressBar {
@@ -13,7 +12,7 @@ class ProgressBar {
   int _progress = 0;
   late int max;
 
-  // Time
+  /// Tracks time
   final _clock = Stopwatch();
 
   /// Whether a timer should be present
@@ -22,8 +21,6 @@ class ProgressBar {
   /// Percentage should be displayed or not
   bool percentage;
 
-  // Decorations
-
   /// The description of the bar
   String _desc;
 
@@ -33,11 +30,8 @@ class ProgressBar {
   /// The character to used as fill
   String fill;
 
-  /// Scale of the bar relative to the terminal width
-  double scale;
-
   /// Width of the bar
-  int? width;
+  int width;
 
   /// Whether the instance should print nothing
   bool silent;
@@ -56,33 +50,25 @@ class ProgressBar {
   }
 
   /// Arguments:
-  /// - total : Total number of steps
-  /// - desc : Simple text shown before the bar (optional)
-  /// - space : Character denoting empty space (default : '.')
-  /// - fill : Character denoting filled space (default : '█')
-  /// - time : Toggle timing mode (default : false)
-  /// - percentage : Toggle percentage display (default : false)
-  /// - scale : Scale of the bar relative to width (between: 0 and 1, default: 0.5, Irrelavant if width is specified)
-  /// - width : Width of the bar drawn in the CLI
+  /// - `total` : Total number of steps
+  /// - `desc` : Simple text shown after the bar (optional)
+  /// - `space` : Character denoting empty space (default : '.')
+  /// - `fill` : Character denoting filled space (default : '█')
+  /// - `time` : Toggle timing mode (default : false)
+  /// - `percentage` : Toggle percentage display (default : false)
+  /// - `width` : Width of the bar drawn in the CLI (default: 40)
   ProgressBar({
     required int total,
     String desc = '',
     this.space = '.',
     this.fill = '█',
     this.time = false,
     this.percentage = false,
-    this.scale = 0.5,
     this.width = 40,
     this.silent = false,
   })  : _desc = desc,
         _total = total {
-    // Handles width of the bar, throws an error if it's not specified and the terminal width is not available
-    try {
-      max = width ?? ((stdout.terminalColumns - _desc.length) * scale).toInt();
-    } on StdoutException {
-      throw StdoutException(
-          'Could not get terminal width, try specifying a width manually');
-    }
+    max = width;
     if (time) {
       _clock.start();
       scheduleMicrotask(autoRender);
@@ -128,24 +114,21 @@ class ProgressBar {
         _clock.stop();
       }
     }
-    String timeStr = '';
+    String? timeStr = null;
     if (time) {
       final rate = _clock.elapsedMicroseconds / (_current == 0 ? 1 : _current);
       final eta = Duration(microseconds: ((_total - _current) * rate).toInt());
-      timeStr = '[ ' +
-          _clock.elapsed.toString().substring(0, 10) +
-          ' / ' +
-          eta.toString().substring(0, 10) +
-          ' ]';
+      final elpsedStr = _clock.elapsed.toString().substring(0, 10);
+      final etaStr = eta.toString().substring(0, 10);
+      timeStr = '[ $elpsedStr / $etaStr ]';
     }
-    String perc = '';
+    String? perc = null;
     if (percentage) {
       perc = '${(_current * 100 / _total).toStringAsFixed(1)}%';
     }
     final bar = '${fill * _progress}${space * (max - _progress)}';
     final frameParts = [bar, '$_current/$_total', perc, timeStr, ':', _desc];
-    final filteredParts = frameParts.where((v) => v.isNotEmpty).toList();
-    final frame = filteredParts.join(' ');
+    final frame = frameParts.where((v) => v != null).toList().join(' ');
     removeCliLines(1);
     print(frame);
   }

flutter_package/pubspec.yaml

@@ -15,12 +15,11 @@ dependencies:
   watcher: ^1.1.0
   ffi: ^2.1.0
   yaml: ^3.1.2
-  internet_connection_checker: ^1.0.0
   args: ^2.5.0
   chalkdart: ^2.2.1
 
 dev_dependencies:
-  lints: ">=3.0.0 <5.0.0"
+  lints: ">=4.0.0 <5.0.0"
 
 # For information on the generic Dart part of this file, see the
 # following page: https://dart.dev/tools/pub/pubspec