add simple binary for testing, this is not production ready

bin/dtorrent_task.dart

@@ -0,0 +1,86 @@
+import 'dart:async';
+import 'dart:io';
+
+import 'package:args/args.dart';
+import 'package:dtorrent_parser/dtorrent_parser.dart';
+import 'package:dtorrent_task/dtorrent_task.dart';
+
+void main(List<String> mainArgs) async {
+  var parser = ArgParser();
+  parser.addOption(
+    'task-type',
+    help: 'Choose the download type',
+    abbr: "t",
+    allowed: ['download', 'stream'],
+    defaultsTo: 'download',
+  );
+  parser.addFlag(
+    'help',
+    help: 'show usage/help',
+    abbr: 'h',
+    aliases: ['usage'],
+    negatable: false,
+  );
+  showHelp() {
+    print(parser.usage);
+    exit(0);
+  }
+
+  var args = parser.parse(mainArgs);
+  if (args['help']) {
+    showHelp();
+  }
+
+  if (args.rest.length < 2) {
+    print('Please provide a .torrent file and a save dir');
+    exit(0);
+  }
+  var filePath = mainArgs[0];
+
+  if (!File(filePath).existsSync()) {
+    print('File Can\'t be read');
+    exit(0);
+  }
+  var saveDir = args.rest[1];
+  if (!Directory(saveDir).existsSync()) {
+    print('dir Can\'t be read');
+    exit(0);
+  }
+  var torrent = await Torrent.parse(filePath);
+  TorrentTask task;
+  if (args['task-type'] == 'stream') {
+    task = TorrentStream(torrent, saveDir);
+  } else {
+    task = TorrentTask.newTask(torrent, saveDir);
+  }
+  var listener = task.createListener();
+  listener
+    ..on<StreamingServerStarted>(
+      (event) => print(
+          'Streaming started on http://${event.internetAddress.address}:${event.port}'),
+    )
+    ..on<StateFileUpdated>(
+      (event) {
+        var progress = '${(task.progress * 100).toStringAsFixed(2)}%';
+        var ads =
+            ((task.averageDownloadSpeed) * 1000 / 1024).toStringAsFixed(2);
+        var aps = ((task.averageUploadSpeed) * 1000 / 1024).toStringAsFixed(2);
+        var ds = ((task.currentDownloadSpeed) * 1000 / 1024).toStringAsFixed(2);
+        var ps = ((task.uploadSpeed) * 1000 / 1024).toStringAsFixed(2);
+
+        var utpDownloadSpeed =
+            ((task.utpDownloadSpeed) * 1000 / 1024).toStringAsFixed(2);
+        var utpUploadSpeed =
+            ((task.utpUploadSpeed) * 1000 / 1024).toStringAsFixed(2);
+        var utpPeerCount = task.utpPeerCount;
+
+        var active = task.connectedPeersNumber;
+        var seeders = task.seederNumber;
+        var all = task.allPeersNumber;
+        print(
+            'Progress : $progress , Peers:($active/$seeders/$all)($utpPeerCount) . Download speed : ($utpDownloadSpeed)($ads/$ds)kb/s , upload speed : ($utpUploadSpeed)($aps/$ps)kb/s');
+      },
+    );
+
+  await task.start();
+}

pubspec.yaml

@@ -19,6 +19,7 @@ dependencies:
   mime: ^1.0.4
   collection: ^1.0.0
   crypto: ^3.0.3
+  args: ^2.4.2
 
 dev_dependencies:
   lints: ^2.0.1