import 'dart:io';
import 'package:flutter/material.dart';
import 'package:gap/gap.dart';
import 'package:go_router/go_router.dart';
import 'package:umbrix/core/localization/translations.dart';
import 'package:umbrix/features/app_update/model/remote_version_entity.dart';
import 'package:umbrix/features/app_update/notifier/app_update_notifier.dart';
import 'package:umbrix/utils/utils.dart';
import 'package:hooks_riverpod/hooks_riverpod.dart';
import 'package:dio/dio.dart';
import 'package:path_provider/path_provider.dart';
import 'package:flutter_hooks/flutter_hooks.dart';
import 'package:open_file/open_file.dart';

class NewVersionDialog extends HookConsumerWidget with PresLogger {
  NewVersionDialog(
    this.currentVersion,
    this.newVersion, {
    this.canIgnore = true,
  }) : super(key: _dialogKey);

  final String currentVersion;
  final RemoteVersionEntity newVersion;
  final bool canIgnore;

  static final _dialogKey = GlobalKey(debugLabel: 'new version dialog');

  Future<void> show(BuildContext context) async {
    if (_dialogKey.currentContext == null) {
      return showDialog(
        context: context,
        builder: (context) => this,
      );
    } else {
      loggy.warning("new version dialog is already open");
    }
  }

  @override
  Widget build(BuildContext context, WidgetRef ref) {
    final t = ref.watch(translationsProvider);
    final theme = Theme.of(context);
    final isDownloading = useState(false);
    final downloadProgress = useState(0.0);

    Future<void> downloadAndInstallUpdate() async {
      // Для Android - просто открываем браузер (в production - ссылка на Google Play)
      if (Platform.isAndroid) {
        await UriUtils.tryLaunch(Uri.parse(newVersion.url));
        if (context.mounted) context.pop();
        return;
      }

      // Для Desktop (Windows/macOS/Linux) - скачиваем с прогресс-баром
      try {
        isDownloading.value = true;
        downloadProgress.value = 0.0;

        final tempDir = await getTemporaryDirectory();
        String fileExt = '';
        if (Platform.isWindows)
          fileExt = '.exe';
        else if (Platform.isMacOS)
          fileExt = '.dmg';
        else if (Platform.isLinux) fileExt = '.AppImage';

        final savePath = '${tempDir.path}/umbrix-${newVersion.version}$fileExt';
        final file = File(savePath);
        if (await file.exists()) await file.delete();

        final dio = Dio();
        await dio.download(newVersion.url, savePath, onReceiveProgress: (received, total) {
          if (total != -1) downloadProgress.value = received / total;
        });

        loggy.info('Update downloaded to: $savePath');
        final result = await OpenFile.open(savePath);

        if (result.type != ResultType.done && context.mounted) {
          CustomToast.error('Не удалось открыть: ${result.message}').show(context);
        } else if (context.mounted) {
          context.pop();
        }
      } catch (e, st) {
        loggy.error('Download failed', e, st);
        if (context.mounted) CustomToast.error('Ошибка: $e').show(context);
      } finally {
        isDownloading.value = false;
      }
    }

    return AlertDialog(
      title: Text(t.appUpdate.dialogTitle),
      content: Column(
        mainAxisSize: MainAxisSize.min,
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          Text(t.appUpdate.updateMsg),
          const Gap(8),
          Text.rich(TextSpan(children: [
            TextSpan(text: "${t.appUpdate.currentVersionLbl}: ", style: theme.textTheme.bodySmall),
            TextSpan(text: currentVersion, style: theme.textTheme.labelMedium),
          ])),
          Text.rich(TextSpan(children: [
            TextSpan(text: "${t.appUpdate.newVersionLbl}: ", style: theme.textTheme.bodySmall),
            TextSpan(text: newVersion.presentVersion, style: theme.textTheme.labelMedium),
          ])),
          if (isDownloading.value) ...[
            const Gap(16),
            LinearProgressIndicator(value: downloadProgress.value),
            const Gap(8),
            Text('Скачивание: ${(downloadProgress.value * 100).toStringAsFixed(0)}%', style: theme.textTheme.bodySmall),
          ],
        ],
      ),
      actions: [
        if (canIgnore && !isDownloading.value)
          TextButton(
            onPressed: () async {
              await ref.read(appUpdateNotifierProvider.notifier).ignoreRelease(newVersion);
              if (context.mounted) context.pop();
            },
            child: Text(t.appUpdate.ignoreBtnTxt),
          ),
        if (!isDownloading.value) TextButton(onPressed: context.pop, child: Text(t.appUpdate.laterBtnTxt)),
        TextButton(
          onPressed: isDownloading.value ? null : downloadAndInstallUpdate,
          child: Text(isDownloading.value ? 'Скачивание...' : t.appUpdate.updateNowBtnTxt),
        ),
      ],
    );
  }
}