ente/auth/lib/ui/account/recovery_page.dart

import 'package:ente_auth/core/configuration.dart';
import 'package:ente_auth/l10n/l10n.dart';
import 'package:ente_auth/ui/account/password_entry_page.dart';
import 'package:ente_auth/ui/common/dynamic_fab.dart';
import 'package:ente_auth/utils/dialog_util.dart';
import 'package:ente_auth/utils/toast_util.dart';
import 'package:flutter/material.dart';

class RecoveryPage extends StatefulWidget {
  const RecoveryPage({super.key});

  @override
  State<RecoveryPage> createState() => _RecoveryPageState();
}

class _RecoveryPageState extends State<RecoveryPage> {
  final _recoveryKey = TextEditingController();

  Future<void> onPressed() async {
    FocusScope.of(context).unfocus();
    final dialog = createProgressDialog(context, "Decrypting...");
    await dialog.show();
    try {
      await Configuration.instance.recover(_recoveryKey.text.trim());
      await dialog.hide();
      showToast(context, "Recovery successful!");
      await Navigator.of(context).pushReplacement(
        MaterialPageRoute(
          builder: (BuildContext context) {
            return const PopScope(
              canPop: false,
              child: PasswordEntryPage(
                mode: PasswordEntryMode.reset,
              ),
            );
          },
        ),
      );
    } catch (e) {
      await dialog.hide();
      String errMessage = 'The recovery key you entered is incorrect';
      if (e is AssertionError) {
        errMessage = '$errMessage : ${e.message}';
      }
      await showErrorDialog(context, "Incorrect recovery key", errMessage);
    }
  }

  @override
  Widget build(BuildContext context) {
    final isKeypadOpen = MediaQuery.of(context).viewInsets.bottom > 100;
    FloatingActionButtonLocation? fabLocation() {
      if (isKeypadOpen) {
        return null;
      } else {
        return FloatingActionButtonLocation.centerFloat;
      }
    }

    return Scaffold(
      resizeToAvoidBottomInset: isKeypadOpen,
      appBar: AppBar(
        elevation: 0,
        leading: IconButton(
          icon: const Icon(Icons.arrow_back),
          color: Theme.of(context).iconTheme.color,
          onPressed: () {
            Navigator.of(context).pop();
          },
        ),
      ),
      floatingActionButton: DynamicFAB(
        isKeypadOpen: isKeypadOpen,
        isFormValid: _recoveryKey.text.isNotEmpty,
        buttonText: 'Recover',
        onPressedFunction: onPressed,
      ),
      floatingActionButtonLocation: fabLocation(),
      floatingActionButtonAnimator: NoScalingAnimation(),
      body: Column(
        children: [
          Expanded(
            child: ListView(
              children: [
                Padding(
                  padding:
                      const EdgeInsets.symmetric(vertical: 30, horizontal: 20),
                  child: Text(
                    context.l10n.forgotPassword,
                    style: Theme.of(context).textTheme.headlineMedium,
                  ),
                ),
                Padding(
                  padding: const EdgeInsets.fromLTRB(20, 24, 20, 0),
                  child: TextFormField(
                    decoration: InputDecoration(
                      filled: true,
                      hintText: "Enter your recovery key",
                      contentPadding: const EdgeInsets.all(20),
                      border: UnderlineInputBorder(
                        borderSide: BorderSide.none,
                        borderRadius: BorderRadius.circular(6),
                      ),
                    ),
                    style: const TextStyle(
                      fontSize: 14,
                      fontFeatures: [FontFeature.tabularFigures()],
                    ),
                    controller: _recoveryKey,
                    autofocus: false,
                    autocorrect: false,
                    keyboardType: TextInputType.multiline,
                    maxLines: null,
                    onChanged: (_) {
                      setState(() {});
                    },
                  ),
                ),
                const Padding(
                  padding: EdgeInsets.symmetric(vertical: 18),
                  child: Divider(
                    thickness: 1,
                  ),
                ),
                Row(
                  children: [
                    GestureDetector(
                      behavior: HitTestBehavior.translucent,
                      onTap: () {
                        showErrorDialog(
                          context,
                          "Sorry",
                          "Due to the nature of our end-to-end encryption protocol, your data cannot be decrypted without your password or recovery key",
                        );
                      },
                      child: Container(
                        padding: const EdgeInsets.symmetric(horizontal: 20),
                        child: Center(
                          child: Text(
                            context.l10n.noRecoveryKeyTitle,
                            style: Theme.of(context)
                                .textTheme
                                .titleMedium!
                                .copyWith(
                                  fontSize: 14,
                                  decoration: TextDecoration.underline,
                                ),
                          ),
                        ),
                      ),
                    ),
                  ],
                ),
              ],
            ),
          ),
        ],
      ),
    );
  }
}