import 'dart:ui';
import 'dart:io';
import 'package:flutter/material.dart';
import 'package:window_manager/window_manager.dart';
import 'package:winui_n2n/edge_state.dart';
import 'package:winui_n2n/home_page.dart';
import 'package:winui_n2n/shared_pref_singleton.dart';
import 'package:flutter_gen/gen_l10n/app_localizations.dart';

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

  @override
  State<ApplicationExitControl> createState() => _ApplicationExitControlState();
}

class _ApplicationExitControlState extends State<ApplicationExitControl> {
  late final AppLifecycleListener _listener;

  @override
  void initState() {
    super.initState();
    _listener = AppLifecycleListener(
      onExitRequested: _handleExitRequest,
    );
  }

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

  Future<AppExitResponse> _handleExitRequest() async {
    if (SharedPrefSingleton().minimizeOnQuit == null) {
      showDialog(
        context: context,
        builder: (context) {
          bool minimize = false;
          return AlertDialog(
            title: Text(AppLocalizations.of(context)!.exitAlert),
            actions: <Widget>[
              Row(
                mainAxisAlignment: MainAxisAlignment.spaceBetween,
                children: [
                  Row(
                    children: [
                      StatefulBuilder(builder:
                          (BuildContext context, StateSetter setState) {
                        return Checkbox(
                          value: minimize,
                          onChanged: (bool? value) {
                            SharedPrefSingleton()
                                .setMinimizeOrNot(value ?? false)
                                .then(
                              (_) {
                                setState(
                                  () {
                                    minimize = value ?? false;
                                  },
                                );
                              },
                            );
                          },
                        );
                      }),
                      Text(AppLocalizations.of(context)!.alwaysMinimize),
                    ],
                  ),
                  Row(
                    children: [
                      TextButton(
                        onPressed: () {
                          Navigator.pop(context);
                          windowManager.hide();
                        },
                        child: Text(AppLocalizations.of(context)!.minimize),
                      ),
                      TextButton(
                        onPressed: () {
                          Navigator.pop(context);
                        },
                        child: Text(AppLocalizations.of(context)!.exit),
                      ),
                    ],
                  ),
                ],
              ),
            ],
          );
        },
      );

      return AppExitResponse.cancel;
    }

    if (EdgeState.instance.isRunning && EdgeState.instance.process != null) {
      if (EdgeState.instance.process!.kill()) {
        EdgeState.instance.isRunning = false;
        EdgeState.instance.process = null;
      } else {
        // TODO: Handle abnormal close.
        return AppExitResponse.cancel;
      }
    }

    // Uninstall tap device before exit
    final findTapResult = await Process.run(
      './tools/driver/devcon.exe',
      ['hwids', 'tap0901'],
    );
    if (!findTapResult.stdout
        .toString()
        .contains('No matching devices found.')) {
      // Unstall tap device
      await Process.run(
        './tools/driver/devcon.exe',
        [
          'remove',
          'tap0901',
        ],
      );
    }

    return AppExitResponse.exit;
  }

  @override
  Widget build(BuildContext context) {
    return const HomePage();
  }
}