/*
 * Copyright (c) 2024-2026 Fabian Freund.
 *
 * This file is part of WebLibre
 * (see https://weblibre.eu).
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */
import 'package:flutter/material.dart';
import 'package:flutter_hooks/flutter_hooks.dart';
import 'package:flutter_mozilla_components/flutter_mozilla_components.dart';
import 'package:hooks_riverpod/hooks_riverpod.dart';

import 'package:weblibre/features/user/data/models/engine_settings.dart';
import 'package:weblibre/features/user/domain/repositories/engine_settings.dart';
import 'package:weblibre/utils/exit_app.dart';
import 'package:weblibre/utils/form_validators.dart';

const _defaultServerUrl = 'https://services.addons.mozilla.org';

class AddonCollectionScreen extends HookConsumerWidget {
  const AddonCollectionScreen({super.key});

  @override
  Widget build(BuildContext context, WidgetRef ref) {
    final formKey = useMemoized(() => GlobalKey<FormState>());

    final addonCollectionSetting = ref.watch(
      engineSettingsWithDefaultsProvider.select(
        (value) => value.addonCollection,
      ),
    );

    final serverURLController = useTextEditingController(
      text: addonCollectionSetting?.serverURL ?? _defaultServerUrl,
      keys: [addonCollectionSetting],
    );

    final collectionUserController = useTextEditingController(
      text: addonCollectionSetting?.collectionUser,
      keys: [addonCollectionSetting],
    );

    final collectionNameController = useTextEditingController(
      text: addonCollectionSetting?.collectionName,
      keys: [addonCollectionSetting],
    );

    return Scaffold(
      appBar: AppBar(
        title: const Text('Custom Extension Collection'),
        actions: [
          if (addonCollectionSetting != null)
            IconButton(
              onPressed: () async {
                await ref
                    .read(engineSettingsRepositoryProvider.notifier)
                    .updateSettings(
                      (currentSettings) =>
                          currentSettings.copyWith.addonCollection(null),
                    );

                await exitApp(ref.container);
              },
              icon: const Icon(Icons.delete),
            ),
        ],
      ),
      body: Form(
        key: formKey,
        child: SafeArea(
          child: Padding(
            padding: const EdgeInsets.symmetric(horizontal: 16.0),
            child: ListView(
              children: [
                TextFormField(
                  controller: serverURLController,
                  decoration: const InputDecoration(
                    label: Text('Server URL'),
                    hintText: _defaultServerUrl,
                    floatingLabelBehavior: FloatingLabelBehavior.always,
                  ),
                  keyboardType: TextInputType.url,
                  validator: (value) {
                    return validateUrl(
                      value,
                      onlyHttpProtocol: true,
                      eagerParsing: false,
                    );
                  },
                ),
                const SizedBox(height: 8),
                TextFormField(
                  controller: collectionUserController,
                  decoration: const InputDecoration(
                    label: Text('Collection User'),
                    floatingLabelBehavior: FloatingLabelBehavior.always,
                  ),
                  validator: validateRequired,
                ),
                const SizedBox(height: 8),
                TextFormField(
                  controller: collectionNameController,
                  decoration: const InputDecoration(
                    label: Text('Collection Name'),
                    floatingLabelBehavior: FloatingLabelBehavior.always,
                  ),
                  validator: validateRequired,
                ),
                const SizedBox(height: 32),
                FilledButton(
                  onPressed: () async {
                    if (formKey.currentState?.validate() == true) {
                      await ref
                          .read(engineSettingsRepositoryProvider.notifier)
                          .updateSettings(
                            (
                              currentSettings,
                            ) => currentSettings.copyWith.addonCollection(
                              AddonCollection(
                                serverURL: serverURLController.text,
                                collectionUser: collectionUserController.text,
                                collectionName: collectionNameController.text,
                              ),
                            ),
                          );

                      await exitApp(ref.container);
                    }
                  },
                  child: const Text('Save & Restart Browser'),
                ),
              ],
            ),
          ),
        ),
      ),
    );
  }
}