import 'dart:async';

import 'package:copy_with/copy_with.dart';
import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:kiwi/kiwi.dart';
import 'package:logging/logging.dart';
import 'package:nc_photos/app_localizations.dart';
import 'package:nc_photos/bloc_util.dart';
import 'package:nc_photos/db/entity_converter.dart';
import 'package:nc_photos/di_container.dart';
import 'package:nc_photos/entity/pref.dart';
import 'package:nc_photos/snack_bar_manager.dart';
import 'package:nc_photos/widget/trusted_cert_manager.dart';
import 'package:np_codegen/np_codegen.dart';
import 'package:np_db/np_db.dart';
import 'package:to_string/to_string.dart';

part 'expert/bloc.dart';
part 'expert/state_event.dart';
part 'expert_settings.g.dart';

class ExpertSettings extends StatelessWidget {
  const ExpertSettings({super.key});

  @override
  Widget build(BuildContext context) {
    return BlocProvider(
      create: (_) => _Bloc(
        KiwiContainer().resolve<DiContainer>(),
        db: context.read(),
      ),
      child: const _WrappedExpertSettings(),
    );
  }
}

class _WrappedExpertSettings extends StatefulWidget {
  const _WrappedExpertSettings();

  @override
  State<StatefulWidget> createState() => _WrappedExpertSettingsState();
}

@npLog
class _WrappedExpertSettingsState extends State<_WrappedExpertSettings> {
  @override
  void initState() {
    super.initState();
    _errorSubscription = context.read<_Bloc>().errorStream().listen((error) {
      if (error.ev is _ClearCacheDatabase) {
        SnackBarManager().showSnackBarForException(error.error);
      }
    });
  }

  @override
  void dispose() {
    _errorSubscription.cancel();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Builder(
        builder: (context) => BlocListener<_Bloc, _State>(
          listenWhen: (previous, current) =>
              !identical(previous.lastSuccessful, current.lastSuccessful),
          listener: (context, state) {
            if (state.lastSuccessful is _ClearCacheDatabase) {
              showDialog(
                context: context,
                builder: (_) => AlertDialog(
                  content: Text(L10n.global()
                      .settingsClearCacheDatabaseSuccessNotification),
                  actions: [
                    TextButton(
                      onPressed: () {
                        Navigator.of(context).pop();
                      },
                      child: Text(
                          MaterialLocalizations.of(context).closeButtonLabel),
                    ),
                  ],
                ),
              );
            }
          },
          child: CustomScrollView(
            slivers: [
              SliverAppBar(
                pinned: true,
                title: Text(L10n.global().settingsExpertTitle),
              ),
              SliverPadding(
                padding:
                    const EdgeInsets.symmetric(horizontal: 16, vertical: 16),
                sliver: SliverToBoxAdapter(
                  child: Column(
                    mainAxisSize: MainAxisSize.min,
                    children: [
                      Icon(
                        Icons.warning_amber,
                        color: Theme.of(context).colorScheme.error,
                      ),
                      const SizedBox(height: 8),
                      Text(L10n.global().settingsExpertWarningText),
                    ],
                  ),
                ),
              ),
              SliverList(
                delegate: SliverChildListDelegate(
                  [
                    ListTile(
                      title:
                          Text(L10n.global().settingsClearCacheDatabaseTitle),
                      subtitle: Text(
                          L10n.global().settingsClearCacheDatabaseDescription),
                      onTap: () {
                        context.read<_Bloc>().add(_ClearCacheDatabase());
                      },
                    ),
                    ListTile(
                      title: Text(
                          L10n.global().settingsManageTrustedCertificateTitle),
                      onTap: () {
                        Navigator.of(context)
                            .pushNamed(TrustedCertManager.routeName);
                      },
                    ),
                  ],
                ),
              ),
            ],
          ),
        ),
      ),
    );
  }

  late final StreamSubscription _errorSubscription;
}