opt.

lib/core/extension/context/common.dart

@@ -0,0 +1,11 @@
+import 'package:flutter/material.dart';
+
+extension ContextX on BuildContext {
+  void pop<T extends Object?>([T? result]) {
+    Navigator.of(this).pop<T>(result);
+  }
+
+  bool get canPop => Navigator.of(this).canPop();
+
+  bool get isDark => Theme.of(this).brightness == Brightness.dark;
+}

lib/core/extension/context/dialog.dart

@@ -1,55 +1,14 @@
 import 'package:flutter/material.dart';
 import 'package:flutter_gen/gen_l10n/l10n.dart';
-import 'package:toolbox/view/widget/rebuild.dart';
+import 'package:toolbox/core/extension/context/common.dart';
 
-import '../../data/model/server/snippet.dart';
-import '../../data/provider/snippet.dart';
-import '../../data/res/ui.dart';
-import '../../locator.dart';
-import '../../view/widget/input_field.dart';
-import '../../view/widget/picker.dart';
-import '../route.dart';
-
-extension ContextX on BuildContext {
-  void pop<T extends Object?>([T? result]) {
-    Navigator.of(this).pop<T>(result);
-  }
-
-  bool get canPop => Navigator.of(this).canPop();
-
-  bool get isDark => Theme.of(this).brightness == Brightness.dark;
-}
-
-extension SnackBarX on BuildContext {
-  void showSnackBar(String text) =>
-      ScaffoldMessenger.of(this).showSnackBar(SnackBar(
-        content: Text(text),
-        behavior: SnackBarBehavior.floating,
-      ));
-
-  void showSnackBarWithAction(
-    String content,
-    String action,
-    GestureTapCallback onTap,
-  ) {
-    ScaffoldMessenger.of(this).showSnackBar(SnackBar(
-      content: Text(content),
-      behavior: SnackBarBehavior.floating,
-      action: SnackBarAction(
-        label: action,
-        onPressed: onTap,
-      ),
-    ));
-  }
-
-  void showRestartSnackbar({String? btn, String? msg}) {
-    showSnackBarWithAction(
-      msg ?? 'Need restart to take effect',
-      btn ?? 'Restart',
-      () => RebuildWidget.restartApp(this),
-    );
-  }
-}
+import '../../../data/model/server/snippet.dart';
+import '../../../data/provider/snippet.dart';
+import '../../../data/res/ui.dart';
+import '../../../locator.dart';
+import '../../../view/widget/input_field.dart';
+import '../../../view/widget/picker.dart';
+import '../../route.dart';
 
 extension DialogX on BuildContext {
   Future<T?> showRoundDialog<T>({
@@ -74,7 +33,7 @@ extension DialogX on BuildContext {
 
   void showLoadingDialog({bool barrierDismiss = false}) {
     showRoundDialog(
-      child: centerSizedLoading,
+      child: UIs.centerSizedLoading,
       barrierDismiss: barrierDismiss,
     );
   }

lib/core/extension/context/snackbar.dart

@@ -0,0 +1,33 @@
+import 'package:flutter/material.dart';
+import 'package:toolbox/view/widget/rebuild.dart';
+
+extension SnackBarX on BuildContext {
+  void showSnackBar(String text) =>
+      ScaffoldMessenger.of(this).showSnackBar(SnackBar(
+        content: Text(text),
+        behavior: SnackBarBehavior.floating,
+      ));
+
+  void showSnackBarWithAction(
+    String content,
+    String action,
+    GestureTapCallback onTap,
+  ) {
+    ScaffoldMessenger.of(this).showSnackBar(SnackBar(
+      content: Text(content),
+      behavior: SnackBarBehavior.floating,
+      action: SnackBarAction(
+        label: action,
+        onPressed: onTap,
+      ),
+    ));
+  }
+
+  void showRestartSnackbar({String? btn, String? msg}) {
+    showSnackBarWithAction(
+      msg ?? 'Need restart to take effect',
+      btn ?? 'Restart',
+      () => RebuildWidget.restartApp(this),
+    );
+  }
+}

lib/core/extension/ssh_client.dart

@@ -3,7 +3,7 @@ import 'dart:async';
 import 'package:dartssh2/dartssh2.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/widgets.dart';
-import 'package:toolbox/core/extension/context.dart';
+import 'package:toolbox/core/extension/context/dialog.dart';
 import 'package:toolbox/core/extension/stringx.dart';
 import 'package:toolbox/core/extension/uint8list.dart';
 
@@ -70,7 +70,7 @@ extension SSHClientX on SSHClient {
         if (isRequestingPwd) return;
         isRequestingPwd = true;
         if (data.contains('[sudo] password for ')) {
-          final user = pwdRequestWithUserReg.firstMatch(data)?.group(1);
+          final user = Miscs.pwdRequestWithUserReg.firstMatch(data)?.group(1);
           if (context == null) return;
           final pwd = await context.showPwdDialog(user);
           if (pwd == null || pwd.isEmpty) {

lib/core/update.dart

@@ -4,7 +4,9 @@ import 'package:dio/dio.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_gen/gen_l10n/l10n.dart';
 import 'package:r_upgrade/r_upgrade.dart';
-import 'package:toolbox/core/extension/context.dart';
+import 'package:toolbox/core/extension/context/common.dart';
+import 'package:toolbox/core/extension/context/dialog.dart';
+import 'package:toolbox/core/extension/context/snackbar.dart';
 import 'package:toolbox/data/model/app/update.dart';
 import 'package:toolbox/data/res/logger.dart';
 import 'package:toolbox/data/res/path.dart';
@@ -103,10 +105,8 @@ Future<void> _doUpdate(AppUpdate update, BuildContext context, S? s) async {
 // rmdir Download
 Future<void> _rmDownloadApks() async {
   if (!isAndroid) return;
-  final dlDir = Directory(await _dlDir);
+  final dlDir = Directory(await Paths.dl);
   if (await dlDir.exists()) {
     await dlDir.delete(recursive: true);
   }
 }
-
-Future<String> get _dlDir async => joinPath(await docDir, 'Download');

lib/core/utils/icloud.dart

@@ -29,7 +29,7 @@ class ICloud {
     final completer = Completer<ICloudErr?>();
     await ICloudStorage.upload(
       containerId: _containerId,
-      filePath: localPath ?? '${await docDir}/$relativePath',
+      filePath: localPath ?? '${await Paths.doc}/$relativePath',
       destinationRelativePath: relativePath,
       onProgress: (stream) {
         stream.listen(
@@ -73,7 +73,7 @@ class ICloud {
     await ICloudStorage.download(
       containerId: _containerId,
       relativePath: relativePath,
-      destinationFilePath: localPath ?? '${await docDir}/$relativePath',
+      destinationFilePath: localPath ?? '${await Paths.doc}/$relativePath',
       onProgress: (stream) {
         stream.listen(
           null,
@@ -122,7 +122,7 @@ class ICloud {
         }
       }));
 
-      final docPath = await docDir;
+      final docPath = await Paths.doc;
 
       /// compare files in iCloud and local
       mission.addAll(allFiles.map((file) async {
@@ -176,7 +176,7 @@ class ICloud {
 
   static Future<void> syncDb() async {
     if (!isIOS && !isMacOS) return;
-    final docPath = await docDir;
+    final docPath = await Paths.doc;
     final dir = Directory(docPath);
     final files = await dir.list().toList();
     // filter out non-hive(db) files