style: New settings design

lib/pages/settings_security/settings_security.dart

@@ -1,10 +1,16 @@
+import 'dart:convert';
+import 'dart:typed_data';
+
 import 'package:flutter/material.dart';
 
 import 'package:adaptive_dialog/adaptive_dialog.dart';
+import 'package:file_picker_cross/file_picker_cross.dart';
 import 'package:flutter_app_lock/flutter_app_lock.dart';
 import 'package:flutter_gen/gen_l10n/l10n.dart';
 import 'package:flutter_secure_storage/flutter_secure_storage.dart';
 import 'package:future_loading_dialog/future_loading_dialog.dart';
+import 'package:intl/intl.dart';
+import 'package:matrix/matrix.dart';
 
 import 'package:fluffychat/config/setting_keys.dart';
 import 'package:fluffychat/widgets/matrix.dart';
@@ -93,12 +99,102 @@ class SettingsSecurityController extends State<SettingsSecurity> {
     }
   }
 
+  void deleteAccountAction() async {
+    if (await showOkCancelAlertDialog(
+          useRootNavigator: false,
+          context: context,
+          title: L10n.of(context)!.warning,
+          message: L10n.of(context)!.deactivateAccountWarning,
+          okLabel: L10n.of(context)!.ok,
+          cancelLabel: L10n.of(context)!.cancel,
+        ) ==
+        OkCancelResult.cancel) {
+      return;
+    }
+    final supposedMxid = Matrix.of(context).client.userID!;
+    final mxids = await showTextInputDialog(
+      useRootNavigator: false,
+      context: context,
+      title: L10n.of(context)!.confirmMatrixId,
+      textFields: [
+        DialogTextField(
+          validator: (text) => text == supposedMxid
+              ? null
+              : L10n.of(context)!.supposedMxid(supposedMxid),
+        ),
+      ],
+      okLabel: L10n.of(context)!.delete,
+      cancelLabel: L10n.of(context)!.cancel,
+    );
+    if (mxids == null || mxids.length != 1 || mxids.single != supposedMxid) {
+      return;
+    }
+    final input = await showTextInputDialog(
+      useRootNavigator: false,
+      context: context,
+      title: L10n.of(context)!.pleaseEnterYourPassword,
+      okLabel: L10n.of(context)!.ok,
+      cancelLabel: L10n.of(context)!.cancel,
+      textFields: [
+        const DialogTextField(
+          obscureText: true,
+          hintText: '******',
+          minLines: 1,
+          maxLines: 1,
+        )
+      ],
+    );
+    if (input == null) return;
+    await showFutureLoadingDialog(
+      context: context,
+      future: () => Matrix.of(context).client.deactivateAccount(
+            auth: AuthenticationPassword(
+              password: input.single,
+              identifier: AuthenticationUserIdentifier(
+                  user: Matrix.of(context).client.userID!),
+            ),
+          ),
+    );
+  }
+
   void showBootstrapDialog(BuildContext context) async {
     await BootstrapDialog(
       client: Matrix.of(context).client,
     ).show(context);
   }
 
+  Future<void> dehydrateAction() => dehydrateDevice(context);
+
+  static Future<void> dehydrateDevice(BuildContext context) async {
+    final response = await showOkCancelAlertDialog(
+      context: context,
+      isDestructiveAction: true,
+      title: L10n.of(context)!.dehydrate,
+      message: L10n.of(context)!.dehydrateWarning,
+    );
+    if (response != OkCancelResult.ok) {
+      return;
+    }
+    await showFutureLoadingDialog(
+      context: context,
+      future: () async {
+        try {
+          final export = await Matrix.of(context).client.exportDump();
+          final filePickerCross = FilePickerCross(
+              Uint8List.fromList(const Utf8Codec().encode(export!)),
+              path:
+                  '/fluffychat-export-${DateFormat(DateFormat.YEAR_MONTH_DAY).format(DateTime.now())}.fluffybackup',
+              fileExtension: 'fluffybackup');
+          await filePickerCross.exportToStorage(
+            subject: L10n.of(context)!.dehydrateShare,
+          );
+        } catch (e, s) {
+          Logs().e('Export error', e, s);
+        }
+      },
+    );
+  }
+
   @override
   Widget build(BuildContext context) => SettingsSecurityView(this);
 }