/*
 * Copyright (c) 2024-2025 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 'dart:convert';

import 'package:flutter/material.dart';
import 'package:flutter_hooks/flutter_hooks.dart';
import 'package:flutter_material_design_icons/flutter_material_design_icons.dart';
import 'package:go_router/go_router.dart';
import 'package:hooks_riverpod/hooks_riverpod.dart';
import 'package:weblibre/core/routing/routes.dart';
import 'package:weblibre/domain/entities/profile.dart';
import 'package:weblibre/features/user/domain/repositories/profile.dart';
import 'package:weblibre/utils/form_validators.dart';

class ProfileEditScreen extends HookConsumerWidget {
  final Profile? profile;

  const ProfileEditScreen({required this.profile});

  @override
  Widget build(BuildContext context, WidgetRef ref) {
    final formKey = useMemoized(() => GlobalKey<FormState>());
    final nameTextController = useTextEditingController(text: profile?.name);

    return Scaffold(
      appBar: AppBar(
        title: (profile != null)
            ? const Text('Edit User')
            : const Text('Create User'),
        actions: [
          IconButton(
            onPressed: () async {
              if (formKey.currentState?.validate() ?? false) {
                if (profile != null) {
                  await ref
                      .read(profileRepositoryProvider.notifier)
                      .updateProfileMetadata(
                        profile!.copyWith.name(nameTextController.text),
                      );

                  if (context.mounted) {
                    context.pop();
                  }
                } else {
                  await ref
                      .read(profileRepositoryProvider.notifier)
                      .createProfile(name: nameTextController.text);

                  if (context.mounted) {
                    context.pop();
                  }
                }
              }
            },
            icon: const Icon(Icons.check),
          ),
        ],
      ),
      body: Form(
        key: formKey,
        child: Padding(
          padding: const EdgeInsets.symmetric(horizontal: 12.0),
          child: ListView(
            children: [
              TextFormField(
                controller: nameTextController,
                decoration: const InputDecoration(
                  label: Text('Name'),
                  floatingLabelBehavior: FloatingLabelBehavior.always,
                ),
                validator: validateProfileName,
              ),
              const SizedBox(height: 16),
              if (profile != null) ...[
                SizedBox(
                  width: double.infinity,
                  child: OutlinedButton.icon(
                    label: const Text('Backup'),
                    icon: const Icon(MdiIcons.safe),
                    onPressed: () async {
                      await BackupProfileRoute(
                        profile: jsonEncode(profile!.toJson()),
                      ).push(context);
                    },
                  ),
                ),
              ],
              const SizedBox(height: 16),
              SizedBox(
                width: double.infinity,
                child: OutlinedButton.icon(
                  style: OutlinedButton.styleFrom(
                    side: BorderSide(
                      color: Theme.of(context).colorScheme.error,
                    ),
                    foregroundColor: Theme.of(context).colorScheme.error,
                    iconColor: Theme.of(context).colorScheme.error,
                  ),
                  label: const Text('Delete'),
                  icon: const Icon(Icons.delete),
                  onPressed: () async {
                    final result = await showDialog<bool?>(
                      context: context,
                      builder: (BuildContext context) {
                        return AlertDialog(
                          icon: const Icon(Icons.warning),
                          title: const Text('Delete User'),
                          content: const Text(
                            'Are you sure you want to delete this User including all data?',
                          ),
                          actions: <Widget>[
                            TextButton(
                              onPressed: () {
                                Navigator.pop(context, false);
                              },
                              child: const Text('Cancel'),
                            ),
                            TextButton(
                              onPressed: () {
                                Navigator.pop(context, true);
                              },
                              child: const Text('Delete'),
                            ),
                          ],
                        );
                      },
                    );

                    if (result == true) {
                      await ref
                          .read(profileRepositoryProvider.notifier)
                          .deleteProfile(profile!.uuidValue.uuid);

                      if (context.mounted) {
                        context.pop();
                      }
                    }
                  },
                ),
              ),
            ],
          ),
        ),
      ),
    );
  }
}