MWClash/lib/fragments/backup_and_recovery.dart

import 'dart:typed_data';

import 'package:fl_clash/common/common.dart';
import 'package:fl_clash/common/dav_client.dart';
import 'package:fl_clash/enum/enum.dart';
import 'package:fl_clash/models/models.dart';
import 'package:fl_clash/providers/config.dart';
import 'package:fl_clash/state.dart';
import 'package:fl_clash/widgets/fade_box.dart';
import 'package:fl_clash/widgets/list.dart';
import 'package:fl_clash/widgets/text.dart';
import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';

class BackupAndRecovery extends ConsumerWidget {
  const BackupAndRecovery({super.key});

  _showAddWebDAV(DAV? dav) async {
    await globalState.showCommonDialog<String>(
      child: WebDAVFormDialog(
        dav: dav?.copyWith(),
      ),
    );
  }

  _backupOnWebDAV(BuildContext context, DAVClient client) async {
    final commonScaffoldState = context.commonScaffoldState;
    final res = await commonScaffoldState?.loadingRun<bool>(
      () async {
        final backupData = await globalState.appController.backupData();
        return await client.backup(Uint8List.fromList(backupData));
      },
      title: appLocalizations.backup,
    );
    if (res != true) return;
    globalState.showMessage(
      title: appLocalizations.backup,
      message: TextSpan(text: appLocalizations.backupSuccess),
    );
  }

  _recoveryOnWebDAV(
    BuildContext context,
    DAVClient client,
    RecoveryOption recoveryOption,
  ) async {
    final commonScaffoldState = context.commonScaffoldState;
    final res = await commonScaffoldState?.loadingRun<bool>(
      () async {
        final data = await client.recovery();
        await globalState.appController.recoveryData(data, recoveryOption);
        return true;
      },
      title: appLocalizations.recovery,
    );
    if (res != true) return;
    globalState.showMessage(
      title: appLocalizations.recovery,
      message: TextSpan(text: appLocalizations.recoverySuccess),
    );
  }

  _handleRecoveryOnWebDAV(BuildContext context, DAVClient client) async {
    final recoveryOption = await globalState.showCommonDialog<RecoveryOption>(
      child: const RecoveryOptionsDialog(),
    );
    if (recoveryOption == null || !context.mounted) return;
    _recoveryOnWebDAV(context, client, recoveryOption);
  }

  _backupOnLocal(BuildContext context) async {
    final commonScaffoldState = context.commonScaffoldState;
    final res = await commonScaffoldState?.loadingRun<bool>(
      () async {
        final backupData = await globalState.appController.backupData();
        final value = await picker.saveFile(
          other.getBackupFileName(),
          Uint8List.fromList(backupData),
        );
        if (value == null) return false;
        return true;
      },
      title: appLocalizations.backup,
    );
    if (res != true) return;
    globalState.showMessage(
      title: appLocalizations.backup,
      message: TextSpan(text: appLocalizations.backupSuccess),
    );
  }

  _recoveryOnLocal(
    BuildContext context,
    RecoveryOption recoveryOption,
  ) async {
    final file = await picker.pickerFile();
    final data = file?.bytes;
    if (data == null || !context.mounted) return;
    final commonScaffoldState = context.commonScaffoldState;
    final res = await commonScaffoldState?.loadingRun<bool>(
      () async {
        await globalState.appController.recoveryData(
          List<int>.from(data),
          recoveryOption,
        );
        return true;
      },
      title: appLocalizations.recovery,
    );
    if (res != true) return;
    globalState.showMessage(
      title: appLocalizations.recovery,
      message: TextSpan(text: appLocalizations.recoverySuccess),
    );
  }

  _handleRecoveryOnLocal(BuildContext context) async {
    final recoveryOption = await globalState.showCommonDialog<RecoveryOption>(
      child: const RecoveryOptionsDialog(),
    );
    if (recoveryOption == null || !context.mounted) return;
    _recoveryOnLocal(context, recoveryOption);
  }

  _handleChange(String? value, WidgetRef ref) {
    if (value == null) {
      return;
    }
    ref.read(appDAVSettingProvider.notifier).updateState(
          (state) => state?.copyWith(
            fileName: value,
          ),
        );
  }

  @override
  Widget build(BuildContext context, ref) {
    final dav = ref.watch(appDAVSettingProvider);
    final client = dav != null ? DAVClient(dav) : null;
    return ListView(
      children: [
        ListHeader(title: appLocalizations.remote),
        if (dav == null)
          ListItem(
            leading: const Icon(Icons.account_box),
            title: Text(appLocalizations.noInfo),
            subtitle: Text(appLocalizations.pleaseBindWebDAV),
            trailing: FilledButton.tonal(
              onPressed: () {
                _showAddWebDAV(dav);
              },
              child: Text(
                appLocalizations.bind,
              ),
            ),
          )
        else ...[
          ListItem(
            leading: const Icon(Icons.account_box),
            title: TooltipText(
              text: Text(
                dav.user,
                maxLines: 1,
                overflow: TextOverflow.ellipsis,
              ),
            ),
            subtitle: Padding(
              padding: const EdgeInsets.symmetric(vertical: 4),
              child: Row(
                crossAxisAlignment: CrossAxisAlignment.center,
                children: [
                  Text(appLocalizations.connectivity),
                  FutureBuilder<bool>(
                    future: client!.pingCompleter.future,
                    builder: (_, snapshot) {
                      return Center(
                        child: FadeBox(
                          child: snapshot.connectionState ==
                                  ConnectionState.waiting
                              ? const SizedBox(
                                  width: 12,
                                  height: 12,
                                  child: CircularProgressIndicator(
                                    strokeWidth: 1,
                                  ),
                                )
                              : Container(
                                  decoration: BoxDecoration(
                                    shape: BoxShape.circle,
                                    color: snapshot.data == true
                                        ? Colors.green
                                        : Colors.red,
                                  ),
                                  width: 12,
                                  height: 12,
                                ),
                        ),
                      );
                    },
                  ),
                ],
              ),
            ),
            trailing: FilledButton.tonal(
              onPressed: () {
                _showAddWebDAV(dav);
              },
              child: Text(
                appLocalizations.edit,
              ),
            ),
          ),
          const SizedBox(
            height: 4,
          ),
          ListItem.input(
            title: Text(appLocalizations.file),
            subtitle: Text(dav.fileName),
            delegate: InputDelegate(
              title: appLocalizations.file,
              value: dav.fileName,
              resetValue: defaultDavFileName,
              onChanged: (value) {
                _handleChange(value, ref);
              },
            ),
          ),
          ListItem(
            onTap: () {
              _backupOnWebDAV(context, client);
            },
            title: Text(appLocalizations.backup),
            subtitle: Text(appLocalizations.remoteBackupDesc),
          ),
          ListItem(
            onTap: () {
              _handleRecoveryOnWebDAV(context, client);
            },
            title: Text(appLocalizations.recovery),
            subtitle: Text(appLocalizations.remoteRecoveryDesc),
          ),
        ],
        ListHeader(title: appLocalizations.local),
        ListItem(
          onTap: () {
            _backupOnLocal(context);
          },
          title: Text(appLocalizations.backup),
          subtitle: Text(appLocalizations.localBackupDesc),
        ),
        ListItem(
          onTap: () {
            _handleRecoveryOnLocal(context);
          },
          title: Text(appLocalizations.recovery),
          subtitle: Text(appLocalizations.localRecoveryDesc),
        ),
      ],
    );
  }
}

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

  @override
  State<RecoveryOptionsDialog> createState() => _RecoveryOptionsDialogState();
}

class _RecoveryOptionsDialogState extends State<RecoveryOptionsDialog> {
  _handleOnTab(RecoveryOption? value) {
    if (value == null) return;
    Navigator.of(context).pop(value);
  }

  @override
  Widget build(BuildContext context) {
    return AlertDialog(
      title: Text(appLocalizations.recovery),
      contentPadding: const EdgeInsets.symmetric(
        horizontal: 8,
        vertical: 16,
      ),
      content: SizedBox(
        width: 250,
        child: Wrap(
          children: [
            ListItem(
              onTap: () {
                _handleOnTab(RecoveryOption.onlyProfiles);
              },
              title: Text(appLocalizations.recoveryProfiles),
            ),
            ListItem(
              onTap: () {
                _handleOnTab(RecoveryOption.all);
              },
              title: Text(appLocalizations.recoveryAll),
            )
          ],
        ),
      ),
    );
  }
}

class WebDAVFormDialog extends ConsumerStatefulWidget {
  final DAV? dav;

  const WebDAVFormDialog({super.key, this.dav});

  @override
  ConsumerState<WebDAVFormDialog> createState() => _WebDAVFormDialogState();
}

class _WebDAVFormDialogState extends ConsumerState<WebDAVFormDialog> {
  late TextEditingController uriController;
  late TextEditingController userController;
  late TextEditingController passwordController;
  final _obscureController = ValueNotifier<bool>(true);
  final GlobalKey<FormState> _formKey = GlobalKey<FormState>();

  @override
  void initState() {
    super.initState();
    uriController = TextEditingController(text: widget.dav?.uri);
    userController = TextEditingController(text: widget.dav?.user);
    passwordController = TextEditingController(text: widget.dav?.password);
  }

  _submit() {
    if (!_formKey.currentState!.validate()) return;
    ref.read(appDAVSettingProvider.notifier).value = DAV(
      uri: uriController.text,
      user: userController.text,
      password: passwordController.text,
    );
    Navigator.pop(context);
  }

  _delete() {
    ref.read(appDAVSettingProvider.notifier).value = null;
    Navigator.pop(context);
  }

  @override
  void dispose() {
    _obscureController.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return AlertDialog(
      title: Text(appLocalizations.webDAVConfiguration),
      content: Form(
        key: _formKey,
        child: SizedBox(
          width: dialogCommonWidth,
          child: Wrap(
            runSpacing: 16,
            children: [
              TextFormField(
                controller: uriController,
                maxLines: 5,
                minLines: 1,
                decoration: InputDecoration(
                  prefixIcon: const Icon(Icons.link),
                  border: const OutlineInputBorder(),
                  labelText: appLocalizations.address,
                  helperText: appLocalizations.addressHelp,
                ),
                validator: (String? value) {
                  if (value == null || value.isEmpty || !value.isUrl) {
                    return appLocalizations.addressTip;
                  }
                  return null;
                },
              ),
              TextFormField(
                controller: userController,
                decoration: InputDecoration(
                  prefixIcon: const Icon(Icons.account_circle),
                  border: const OutlineInputBorder(),
                  labelText: appLocalizations.account,
                ),
                validator: (String? value) {
                  if (value == null || value.isEmpty) {
                    return appLocalizations.accountTip;
                  }
                  return null;
                },
              ),
              ValueListenableBuilder(
                valueListenable: _obscureController,
                builder: (_, obscure, __) {
                  return TextFormField(
                    controller: passwordController,
                    obscureText: obscure,
                    decoration: InputDecoration(
                      prefixIcon: const Icon(Icons.password),
                      border: const OutlineInputBorder(),
                      suffixIcon: IconButton(
                        icon: Icon(
                          obscure ? Icons.visibility : Icons.visibility_off,
                        ),
                        onPressed: () {
                          _obscureController.value = !obscure;
                        },
                      ),
                      labelText: appLocalizations.password,
                    ),
                    validator: (String? value) {
                      if (value == null || value.isEmpty) {
                        return appLocalizations.passwordTip;
                      }
                      return null;
                    },
                  );
                },
              ),
            ],
          ),
        ),
      ),
      actions: [
        if (widget.dav != null)
          TextButton(
            onPressed: _delete,
            child: Text(appLocalizations.delete),
          ),
        TextButton(
          onPressed: _submit,
          child: Text(appLocalizations.save),
        )
      ],
    );
  }
}