import 'package:flutter/material.dart';
import 'package:permission_handler/permission_handler.dart';
import 'package:testing/src/esp_log.dart';
import 'package:testing/testing_code.dart';
import 'package:file_picker/file_picker.dart';

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

  @override
  State<HomeScreen> createState() => _HomeScreenState();
}

class _HomeScreenState extends State<HomeScreen> {
  String output = '';
  final TextEditingController _controller = TextEditingController();
  final ScrollController _scrollController = ScrollController();
  String jsonFilePath = '';
  String fsqFilePath = '';
  Future<void> pickJsonFile() async {
    final result = await FilePicker.platform.pickFiles(
      type: FileType.custom,
      allowedExtensions: ['json'],
    );

    if (result != null && result.files.single.path != null) {
      jsonFilePath = result.files.single.path!;
      Logger.log("JSON file selected: $jsonFilePath");
    } else {
      Logger.log("JSON file not selected");
    }
  }

  Future<void> pickFsqFile() async {
    final result = await FilePicker.platform.pickFiles(
      type: FileType.custom,
      allowedExtensions: ['fsq'],
    );

    if (result != null && result.files.single.path != null) {
      fsqFilePath = result.files.single.path!;
      Logger.log("FSQ file selected: $fsqFilePath");
    } else {
      Logger.log("FSQ file not selected");
    }
  }

  Future<void> requestStoragePermission() async {
    final status = await Permission.storage.request();
    if (status.isGranted) {
      Logger.log(" Storage permission granted");
    } else if (status.isDenied) {
      Logger.log(" Storage permission denied");
    } else if (status.isPermanentlyDenied) {
      Logger.log(
        " Storage permission permanently denied. Please enable it from settings.",
      );
      openAppSettings();
    }
  }

  final String jsonFileName = 'json1.json';
  final String fsqFileName = 'Greaves_Bosch_BS6_2.fsq';

  @override
  void initState() {
    super.initState();
    requestStoragePermission();
    Logger.uiLogger = (msg) {
      setState(() {
        output += '$msg\n';
      });
      Future.delayed(Duration(milliseconds: 100), () {
        if (_scrollController.hasClients) {
          _scrollController.jumpTo(_scrollController.position.maxScrollExtent);
        }
      });
    };
  }

  @override
  void dispose() {
    _controller.dispose();
    _scrollController.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: Text('Home Screen')),
      body: Padding(
        padding: const EdgeInsets.all(16.0),
        child: Column(
          children: [
            // TextField(
            //   controller: _controller,
            //   onSubmitted: (v) {
            //     waitForSimulatedECUResponse(
            //       simulatedEcuResponse: v
            //           .replaceAll(" ", "")
            //           .toUpperCase()
            //           .trim(),
            //     );
            //   },
            //   decoration: InputDecoration(
            //     labelText: 'Enter command',
            //     border: OutlineInputBorder(),
            //   ),
            // ),
            // SizedBox(height: 20),
            Wrap(
              spacing: 10,
              runSpacing: 10,
              children: [
                ElevatedButton(
                  onPressed: pickJsonFile,
                  child: const Text('Pick JSON File'),
                ),
                ElevatedButton(
                  onPressed: pickFsqFile,
                  child: const Text('Pick FSQ File'),
                ),
                ElevatedButton(
                  onPressed: () async {
                    await start(jsonFilePath, fsqFilePath);
                  },
                  child: const Text('Start'),
                ),
                // ElevatedButton(
                //   onPressed: () async {
                //     await waitForSimulatedECUResponse();
                //   },
                //   child: const Text('Send 7E00'),
                // ),
              ],
            ),
            SizedBox(height: 20),
            Expanded(
              child: Container(
                width: double.infinity,
                decoration: BoxDecoration(
                  color: Colors.black,
                  borderRadius: BorderRadius.circular(8),
                ),
                padding: const EdgeInsets.all(8),
                child: Scrollbar(
                  controller: _scrollController,
                  thumbVisibility: true,
                  child: SingleChildScrollView(
                    controller: _scrollController,
                    child: SelectableText(
                      output,
                      style: const TextStyle(
                        color: Colors.greenAccent,
                        fontFamily: 'Courier',
                        fontSize: 14,
                      ),
                    ),
                  ),
                ),
              ),
            ),
          ],
        ),
      ),
    );
  }
}