import 'package:flutter/material.dart';
import 'dart:io';
import 'package:flutter/foundation.dart';
import 'package:manager_api_new/api.dart';
import 'package:mymuseum_visitapp/Components/SlideFromRouteRight.dart';
import 'package:mymuseum_visitapp/Helpers/translationHelper.dart';
import 'package:mymuseum_visitapp/Models/visitContext.dart';
import 'package:mymuseum_visitapp/Screens/section_page.dart';
import 'package:mymuseum_visitapp/app_context.dart';
import 'package:mymuseum_visitapp/constants.dart';
import 'package:permission_handler/permission_handler.dart';
import 'package:mobile_scanner/mobile_scanner.dart';

class ScannerDialog extends StatefulWidget {
  const ScannerDialog({Key? key, required this.appContext}) : super(key: key);

  final AppContext? appContext;

  @override
  State<ScannerDialog> createState() => _ScannerDialogState();
}

class _ScannerDialogState extends State<ScannerDialog> {
  final MobileScannerController controller = MobileScannerController();
  bool isProcessing = false;

  @override
  void reassemble() {
    super.reassemble();
    if (Platform.isAndroid) {
      controller.stop();
    }
    controller.start();
  }

  @override
  Widget build(BuildContext context) {
    Size size = MediaQuery.of(context).size;

    return Container(
      height: size.height * 0.5,
      width: size.width * 0.9,
      child: Stack(
        children: [
          Center(
            child: ClipRRect(
              borderRadius: BorderRadius.circular(10.0),
              child: MobileScanner(
                controller: controller,
                //allowDuplicates: false,
                onDetect: (barcodes) => _onDetect(barcodes),
              ),
            ),
          ),
          _buildControlButton(
            icon: Icons.flash_on,
            onTap: () => controller.toggleTorch(),
            alignment: Alignment.topRight,
          ),
          _buildControlButton(
            icon: Icons.flip_camera_android,
            onTap: () => controller.switchCamera(),
            alignment: Alignment.bottomRight,
          ),
        ],
      ),
    );
  }

  Widget _buildControlButton({
    required IconData icon,
    required VoidCallback onTap,
    required Alignment alignment,
  }) {
    return Align(
      alignment: alignment,
      child: Container(
        width: 45,
        height: 45,
        margin: const EdgeInsets.all(8),
        decoration: BoxDecoration(
          shape: BoxShape.rectangle,
          color: kMainColor1,
          borderRadius: BorderRadius.circular(20.0),
        ),
        child: InkWell(
          onTap: onTap,
          child: Icon(icon, color: Colors.white),
        ),
      ),
    );
  }

  void _onDetect(BarcodeCapture capture) {
    if (isProcessing) return;

    final barcode = capture.barcodes.first;
    final code = barcode.rawValue ?? "";

    if (barcode.format == BarcodeFormat.qrCode && code.isNotEmpty) {
      isProcessing = true;

      RegExp regExp = RegExp(r'^(?:https:\/\/web\.mymuseum\.be\/([^\/]+)\/([^\/]+)\/([^\/]+)|([^\/]+))$'); // myinfomate
      var match = regExp.firstMatch(code);
      String? instanceId = match?.group(1);
      String? configurationId = match?.group(2);
      String? sectionId = match?.group(3) ?? match?.group(4);

      if (match == null || sectionId == null) {
        ScaffoldMessenger.of(context).showSnackBar(
          SnackBar(content: Text("L'URL ne correspond pas au format attendu."), backgroundColor: kMainColor2),
        );
        Navigator.of(context).pop();
        return;
      }

      VisitAppContext visitAppContext = widget.appContext!.getContext();

      if (visitAppContext.sectionIds == null || !visitAppContext.sectionIds!.contains(sectionId)) {
        ScaffoldMessenger.of(context).showSnackBar(
          SnackBar(content: Text(TranslationHelper.getFromLocale('invalidQRCode', visitAppContext)), backgroundColor: kMainColor2),
        );
        Navigator.of(context).pop();
      } else {
        dynamic rawSection = visitAppContext.currentSections!.firstWhere((cs) => cs!['id'] == sectionId)!;
        Navigator.of(context).pop();
        Navigator.push(
          context,
          SlideFromRightRoute(page: SectionPage(
            configuration: visitAppContext.configuration!,
            rawSection: rawSection,
            visitAppContextIn: visitAppContext,
            sectionId: rawSection['id'],
          )),
        );
      }
    }
  }

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

showScannerDialog(BuildContext context, AppContext appContext) {
  showDialog(
    context: context,
    builder: (BuildContext context) => AlertDialog(
      shape: const RoundedRectangleBorder(
        borderRadius: BorderRadius.all(Radius.circular(10.0)),
      ),
      content: ScannerDialog(appContext: appContext),
      contentPadding: EdgeInsets.zero,
    ),
  );
}