opt.: auto add date for manual webdav backup

lib/core/extension/datetime.dart

@@ -2,4 +2,14 @@ extension DateTimeX on DateTime {
   String get hourMinute {
     return '${hour.toString().padLeft(2, '0')}:${minute.toString().padLeft(2, '0')}';
   }
+
+  /// Format: 2021-01-01-0000
+  String get numStr {
+    final year = this.year.toString();
+    final month = this.month.toString().padLeft(2, '0');
+    final day = this.day.toString().padLeft(2, '0');
+    final hour = this.hour.toString().padLeft(2, '0');
+    final minute = this.minute.toString().padLeft(2, '0');
+    return '$year-$month-$day-$hour$minute';
+  }
 }

lib/core/utils/sync/webdav.dart

@@ -73,6 +73,21 @@ abstract final class Webdav {
     return null;
   }
 
+  static Future<List<String>> list() async {
+    try {
+      final list = await _client.readDir(_prefix);
+      final names = <String>[];
+      for (final item in list) {
+        if ((item.isDir ?? true) || item.name == null) continue;
+        names.add(item.name!);
+      }
+      return names;
+    } catch (e, s) {
+      _logger.warning('List failed', e, s);
+      return [];
+    }
+  }
+
   static void changeClient(String url, String user, String pwd) {
     _client = WebdavClient(url: url, user: user, pwd: pwd);
     Stores.setting.webdavUrl.put(url);

lib/data/model/app/backup.dart

@@ -76,9 +76,9 @@ class Backup {
         lastModTime = Stores.lastModTime,
         history = Stores.history.box.toJson();
 
-  static Future<String> backup() async {
+  static Future<String> backup([String? name]) async {
     final result = _diyEncrypt(json.encode(Backup.loadFromStore()));
-    final path = await Paths.bak;
+    final path = '${await Paths.doc}/${name ?? Paths.bakName}';
     await File(path).writeAsString(result);
     return path;
   }

lib/data/res/build_data.dart

@@ -2,9 +2,9 @@
 
 class BuildData {
   static const String name = "ServerBox";
-  static const int build = 700;
+  static const int build = 701;
   static const String engine = "3.16.5";
-  static const String buildAt = "2024-01-06 11:00:48";
-  static const int modifications = 4;
+  static const String buildAt = "2024-01-06 13:39:30";
+  static const int modifications = 1;
   static const int script = 34;
 }

lib/view/page/backup.dart

@@ -6,6 +6,7 @@ import 'package:toolbox/core/extension/context/common.dart';
 import 'package:toolbox/core/extension/context/dialog.dart';
 import 'package:toolbox/core/extension/context/locale.dart';
 import 'package:toolbox/core/extension/context/snackbar.dart';
+import 'package:toolbox/core/extension/datetime.dart';
 import 'package:toolbox/core/utils/misc.dart';
 import 'package:toolbox/core/utils/sync/icloud.dart';
 import 'package:toolbox/core/utils/platform/base.dart';
@@ -122,8 +123,7 @@ class BackupPage extends StatelessWidget {
       child: ExpandTile(
         leading: const Icon(Icons.storage),
         title: const Text('WebDAV'),
-        initiallyExpanded:
-            !(isIOS || isMacOS) && Stores.setting.webdavSync.fetch(),
+        initiallyExpanded: true,
         children: [
           ListTile(
             title: Text(l10n.setting),
@@ -241,21 +241,48 @@ class BackupPage extends StatelessWidget {
 
   Future<void> _onTapWebdavDl(BuildContext context) async {
     webdavLoading.value = true;
-    try {
-      final result = await Webdav.download(
-        relativePath: Paths.bakName,
-      );
-      if (result != null) {
-        Loggers.app.warning('Download webdav backup failed: $result');
-        return;
-      }
-    } catch (e, s) {
-      Loggers.app.warning('Download webdav backup failed', e, s);
-      context.showSnackBar(e.toString());
+    final files = await Webdav.list();
+    if (files.isEmpty) {
+      context.showSnackBar(l10n.dirEmpty);
       webdavLoading.value = false;
       return;
     }
-    final dlFile = await File(await Paths.bak).readAsString();
+
+    final fileName = await context.showRoundDialog<String>(
+      title: Text(l10n.restore),
+      child: SizedBox(
+        width: 300,
+        height: 300,
+        child: ListView.builder(
+          itemCount: files.length,
+          itemBuilder: (_, index) {
+            final file = files[index];
+            return ListTile(
+              title: Text(file),
+              onTap: () => context.pop(file),
+            );
+          },
+        ),
+      ),
+      actions: [
+        TextButton(
+          onPressed: () => context.pop(),
+          child: Text(l10n.cancel),
+        ),
+      ],
+    );
+    if (fileName == null) {
+      webdavLoading.value = false;
+      return;
+    }
+
+    final result = await Webdav.download(relativePath: fileName);
+    if (result != null) {
+      Loggers.app.warning('Download webdav backup failed: $result');
+      webdavLoading.value = false;
+      return;
+    }
+    final dlFile = await File(fileName).readAsString();
     final dlBak = await compute(Backup.fromJsonString, dlFile);
     await dlBak.restore(force: true);
     webdavLoading.value = false;
@@ -263,8 +290,9 @@ class BackupPage extends StatelessWidget {
 
   Future<void> _onTapWebdavUp(BuildContext context) async {
     webdavLoading.value = true;
-    await Backup.backup();
-    final uploadResult = await Webdav.upload(relativePath: Paths.bakName);
+    final bakName = '${DateTime.now().numStr}-${Paths.bakName}';
+    await Backup.backup(bakName);
+    final uploadResult = await Webdav.upload(relativePath: bakName);
     if (uploadResult != null) {
       Loggers.app.warning('Upload webdav backup failed: $uploadResult');
     } else {

lib/view/widget/input_field.dart

@@ -59,7 +59,7 @@ class _InputState extends State<Input> {
   Widget build(BuildContext context) {
     return CardX(
       child: Padding(
-        padding: const EdgeInsets.symmetric(horizontal: 7),
+        padding: const EdgeInsets.symmetric(horizontal: 15),
         child: TextField(
           controller: widget.controller,
           maxLines: widget.maxLines,