fluffychat/lib/pages/settings_security.dart

import 'package:adaptive_dialog/adaptive_dialog.dart';
import 'package:fluffychat/config/setting_keys.dart';
import 'package:fluffychat/widgets/matrix.dart';
import 'package:flutter/material.dart';
import 'package:flutter_app_lock/flutter_app_lock.dart';
import 'package:flutter_secure_storage/flutter_secure_storage.dart';
import 'package:future_loading_dialog/future_loading_dialog.dart';
import 'package:flutter_gen/gen_l10n/l10n.dart';

import 'bootstrap_dialog.dart';
import 'views/settings_security_view.dart';

class SettingsSecurity extends StatefulWidget {
  const SettingsSecurity({Key key}) : super(key: key);

  @override
  SettingsSecurityController createState() => SettingsSecurityController();
}

class SettingsSecurityController extends State<SettingsSecurity> {
  void changePasswordAccountAction() async {
    final input = await showTextInputDialog(
      useRootNavigator: false,
      context: context,
      title: L10n.of(context).changePassword,
      okLabel: L10n.of(context).ok,
      cancelLabel: L10n.of(context).cancel,
      textFields: [
        DialogTextField(
          hintText: L10n.of(context).pleaseEnterYourPassword,
          obscureText: true,
          minLines: 1,
          maxLines: 1,
        ),
        DialogTextField(
          hintText: L10n.of(context).chooseAStrongPassword,
          obscureText: true,
          minLines: 1,
          maxLines: 1,
        ),
      ],
    );
    if (input == null) return;
    final success = await showFutureLoadingDialog(
      context: context,
      future: () => Matrix.of(context)
          .client
          .changePassword(input.last, oldPassword: input.first),
    );
    if (success.error == null) {
      ScaffoldMessenger.of(context).showSnackBar(
          SnackBar(content: Text(L10n.of(context).passwordHasBeenChanged)));
    }
  }

  void setAppLockAction() async {
    final currentLock =
        await FlutterSecureStorage().read(key: SettingKeys.appLockKey);
    if (currentLock?.isNotEmpty ?? false) {
      await AppLock.of(context).showLockScreen();
    }
    final newLock = await showTextInputDialog(
      useRootNavigator: false,
      context: context,
      title: L10n.of(context).pleaseChooseAPasscode,
      message: L10n.of(context).pleaseEnter4Digits,
      cancelLabel: L10n.of(context).cancel,
      textFields: [
        DialogTextField(
          validator: (text) {
            if (text.isEmpty || (text.length == 4 && int.tryParse(text) >= 0)) {
              return null;
            }
            return L10n.of(context).pleaseEnter4Digits;
          },
          keyboardType: TextInputType.number,
          obscureText: true,
          maxLines: 1,
          minLines: 1,
        )
      ],
    );
    if (newLock != null) {
      await FlutterSecureStorage()
          .write(key: SettingKeys.appLockKey, value: newLock.single);
      if (newLock.single.isEmpty) {
        AppLock.of(context).disable();
      } else {
        AppLock.of(context).enable();
      }
    }
  }

  void bootstrapSettingsAction() async {
    if (await Matrix.of(context).client.encryption.keyManager.isCached()) {
      if (OkCancelResult.ok ==
          await showOkCancelAlertDialog(
            useRootNavigator: false,
            context: context,
            title: L10n.of(context).keysCached,
            message: L10n.of(context).wipeChatBackup,
            isDestructiveAction: true,
            okLabel: L10n.of(context).ok,
            cancelLabel: L10n.of(context).cancel,
          )) {
        await BootstrapDialog(
          client: Matrix.of(context).client,
          wipe: true,
        ).show(context);
      }
      return;
    }
    await BootstrapDialog(
      client: Matrix.of(context).client,
    ).show(context);
  }

  @override
  Widget build(BuildContext context) => SettingsSecurityView(this);
}