APT/Docker manage

- view apt update
- view docker container

lib/data/provider/apt.dart

@@ -0,0 +1,48 @@
+import 'dart:convert';
+
+import 'package:dartssh2/dartssh2.dart';
+import 'package:toolbox/core/provider_base.dart';
+import 'package:toolbox/data/model/apt/upgrade_pkg_info.dart';
+import 'package:toolbox/data/model/distribution.dart';
+
+class AptProvider extends BusyProvider {
+  SSHClient? client;
+  Distribution? dist;
+  List<AptUpgradePkgInfo>? upgradeable;
+
+  AptProvider();
+
+  void init(SSHClient client, Distribution dist) {
+    this.client = client;
+    this.dist = dist;
+  }
+
+  void clear() {
+    client = null;
+    dist = null;
+    upgradeable = null;
+  }
+
+  bool get isReady {
+    return upgradeable != null && !isBusy;
+  }
+
+  Future<void> refreshInstalled() async {
+    await update();
+    final result = utf8.decode(await client!.run('apt list --upgradeable'));
+    final list = result.split('\n').sublist(4);
+    list.removeWhere((element) => element.isEmpty);
+    upgradeable = list.map((e) => AptUpgradePkgInfo(e, dist!)).toList();
+    notifyListeners();
+  }
+
+  Future<void> update() async {
+    await client!.run('apt update');
+  }
+
+  // Future<void> upgrade() async {
+  //   setBusyState();
+  //   await client!.run('apt upgrade -y');
+  //   refreshInstalled();
+  // }
+}