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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,107 @@ | ||
| import 'dart:typed_data'; | ||
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| import 'package:flutter/material.dart'; | ||
| import 'package:mobile_scanner/mobile_scanner.dart'; | ||
| import 'package:vepiot/storage.dart'; | ||
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|
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| import 'otp.dart'; | ||
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| class ScanScreen extends StatefulWidget { | ||
| const ScanScreen({super.key}); | ||
|
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| @override | ||
| State<StatefulWidget> createState() => _ScanScreenState(); | ||
| } | ||
|
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| class _ScanScreenStateNotifier extends ChangeNotifier { | ||
| void notify() { | ||
| StorageService.OTPs.notifyListeners(); | ||
| } | ||
| } | ||
|
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| class _ScanScreenState extends State<ScanScreen> { | ||
| MobileScannerController cameraController = MobileScannerController(); | ||
| _ScanScreenStateNotifier notifier = _ScanScreenStateNotifier(); | ||
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| @override | ||
| void dispose() { | ||
| cameraController.dispose(); | ||
| notifier.dispose(); | ||
|
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| super.dispose(); | ||
| } | ||
|
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| Future handleScan(String uri) async { | ||
| var errorMessage = ""; | ||
|
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| try { | ||
| OTP otp = OTP.createOTP(uri); | ||
| setState(() => StorageService.OTPs.value[otp.username] = otp); | ||
| await StorageService.writeOTP(); | ||
| notifier.notify(); | ||
| } on FormatException catch (e) { | ||
| errorMessage = e.message; | ||
| } | ||
|
|
||
| if (!mounted) return; | ||
| if (errorMessage.isNotEmpty) { | ||
| ScaffoldMessenger.of(context).showSnackBar(SnackBar( | ||
| content: Text(errorMessage), | ||
| )); | ||
| } else { | ||
| Navigator.pop(context); | ||
| } | ||
| } | ||
|
|
||
| @override | ||
| Widget build(BuildContext context) { | ||
| return Scaffold( | ||
| appBar: AppBar( | ||
| title: const Text('Scanner'), | ||
| actions: [ | ||
| IconButton( | ||
| color: Colors.white, | ||
| icon: ValueListenableBuilder( | ||
| valueListenable: cameraController.torchState, | ||
| builder: (context, state, child) { | ||
| switch (state as TorchState) { | ||
| case TorchState.off: | ||
| return const Icon(Icons.flash_off, color: Colors.grey); | ||
| case TorchState.on: | ||
| return const Icon(Icons.flash_on, color: Colors.yellow); | ||
| } | ||
| }, | ||
| ), | ||
| iconSize: 32.0, | ||
| onPressed: () => cameraController.toggleTorch(), | ||
| ), | ||
| IconButton( | ||
| color: Colors.white, | ||
| icon: ValueListenableBuilder( | ||
| valueListenable: cameraController.cameraFacingState, | ||
| builder: (context, state, child) { | ||
| switch (state as CameraFacing) { | ||
| case CameraFacing.front: | ||
| return const Icon(Icons.camera_front); | ||
| case CameraFacing.back: | ||
| return const Icon(Icons.camera_rear); | ||
| } | ||
| }, | ||
| ), | ||
| iconSize: 32.0, | ||
| onPressed: () => cameraController.switchCamera(), | ||
| ), | ||
| ], | ||
| ), | ||
| body: MobileScanner( | ||
| controller: cameraController, | ||
| onDetect: (capture) { | ||
| final List<Barcode> barcodes = capture.barcodes; | ||
| for (final barcode in barcodes) { | ||
| handleScan(barcode.rawValue!); | ||
| } | ||
| }, | ||
| ), | ||
| ); | ||
| } | ||
| } |
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