Implement PrintingStatusCard in ReceiptSpeedDial and improve error handling for Bluetooth printer connection

lib/screens/receipt_screen.dart

@@ -1,5 +1,4 @@
 import 'package:flutter/material.dart';
-import 'dart:typed_data';
 import 'package:cashumit/models/receipt_item.dart';
 import 'package:cashumit/screens/add_item_screen.dart';
 import 'package:bluetooth_print/bluetooth_print.dart';
@@ -12,6 +11,7 @@ import 'package:cashumit/widgets/store_info_config_dialog.dart';
 import 'package:cashumit/widgets/custom_text_config_dialog.dart';
 import 'package:cashumit/screens/webview_screen.dart';
 import 'package:cashumit/widgets/receipt_speed_dial.dart';
+import 'package:cashumit/widgets/printing_status_card.dart';
 
 // Import service baru
 import 'package:cashumit/services/account_dialog_service.dart';
@@ -21,6 +21,10 @@ import 'package:cashumit/services/esc_pos_print_service.dart';
 import 'package:provider/provider.dart';
 import 'package:cashumit/providers/receipt_provider.dart';
 
+// Import untuk penanganan error
+import 'dart:io';
+import 'package:flutter/services.dart';
+
 class ReceiptScreen extends StatefulWidget {
   const ReceiptScreen({super.key});
 
@@ -32,6 +36,9 @@ class _ReceiptScreenState extends State<ReceiptScreen> {
   // Bluetooth service
   final BluetoothService _bluetoothService = BluetoothService();
   
+  // Printing status
+  bool _isPrinting = false;
+
   @override
   void initState() {
     super.initState();
@@ -108,6 +115,7 @@ class _ReceiptScreenState extends State<ReceiptScreen> {
     final receiptProvider = context.read<ReceiptProvider>();
     final state = receiptProvider.state;
     
+    try {
       // Cek dan reconnect jika perlu
       final isConnected = await _bluetoothService.reconnectIfNeeded();
       if (!isConnected) {
@@ -126,7 +134,6 @@ class _ReceiptScreenState extends State<ReceiptScreen> {
         return;
       }
       
-    try {
       await EscPosPrintService.printToThermalPrinter(
         items: state.items,
         transactionDate: state.transactionDate,
@@ -138,7 +145,20 @@ class _ReceiptScreenState extends State<ReceiptScreen> {
       ScaffoldMessenger.of(context).showSnackBar(
         const SnackBar(content: Text('Perintah cetak dikirim ke printer')),
       );
+    } on SocketException catch (e) {
+      // Tangani error koneksi secara spesifik
+      if (!mounted) return;
+      ScaffoldMessenger.of(context).showSnackBar(
+        SnackBar(content: Text('Koneksi ke printer terputus: ${e.message}')),
+      );
+    } on PlatformException catch (e) {
+      // Tangani error platform secara spesifik
+      if (!mounted) return;
+      ScaffoldMessenger.of(context).showSnackBar(
+        SnackBar(content: Text('Error printer: ${e.message}')),
+      );
     } catch (e) {
+      // Tangani error umum
       if (!mounted) return;
       ScaffoldMessenger.of(context).showSnackBar(
         SnackBar(content: Text('Gagal mencetak struk: $e')),
@@ -146,6 +166,19 @@ class _ReceiptScreenState extends State<ReceiptScreen> {
     }
   }
   
+  /// Methods to control printing status
+  void _startPrinting() {
+    setState(() {
+      _isPrinting = true;
+    });
+  }
+  
+  void _endPrinting() {
+    setState(() {
+      _isPrinting = false;
+    });
+  }
+
   void _addItem() async {
     final newItem = await showDialog<ReceiptItem>(
       context: context,
@@ -330,7 +363,9 @@ class _ReceiptScreenState extends State<ReceiptScreen> {
 
   @override
   Widget build(BuildContext context) {
-    return Scaffold(
+    return Stack(
+      children: [
+        Scaffold(
           backgroundColor:
               Colors.grey[300], // Latar belakang abu-abu untuk efek struk
           floatingActionButton: Consumer<ReceiptProvider>(
@@ -346,6 +381,8 @@ class _ReceiptScreenState extends State<ReceiptScreen> {
                 hasSourceAccount: state.sourceAccountId != null,
                 hasDestinationAccount: state.destinationAccountId != null,
                 onSendToFirefly: _sendToFirefly,
+                onPrintingStart: _startPrinting,
+                onPrintingEnd: _endPrinting,
               );
             }
           ),
@@ -419,6 +456,16 @@ class _ReceiptScreenState extends State<ReceiptScreen> {
               ),
             ),
           ),
+        ),
+        PrintingStatusCard(
+          isVisible: _isPrinting,
+          onDismiss: () {
+            setState(() {
+              _isPrinting = false;
+            });
+          },
+        ),
+      ],
     );
   }
 }

lib/services/bluetooth_service.dart

@@ -1,7 +1,8 @@
 import 'package:bluetooth_print/bluetooth_print.dart';
 import 'package:bluetooth_print/bluetooth_print_model.dart';
 import 'package:shared_preferences/shared_preferences.dart';
-import 'dart:typed_data';
+import 'dart:io';
+import 'package:flutter/services.dart';
 
 class BluetoothService {
   late BluetoothPrint _bluetoothPrint;
@@ -44,7 +45,13 @@ class BluetoothService {
       final isConnected = await _bluetoothPrint.isConnected ?? false;
       _isConnected = isConnected;
       return isConnected;
+    } on SocketException {
+      // Tangani error koneksi secara spesifik
+      _isConnected = false;
+      return false;
     } catch (e) {
+      // Tangani error umum
+      _isConnected = false;
       return false;
     }
   }
@@ -62,7 +69,17 @@ class BluetoothService {
       await prefs.setString('bluetooth_device_name', device.name ?? '');
       
       return true;
+    } on SocketException {
+      // Tangani error koneksi secara spesifik
+      _isConnected = false;
+      return false;
+    } on PlatformException {
+      // Tangani error platform secara spesifik
+      _isConnected = false;
+      return false;
     } catch (e) {
+      // Tangani error umum
+      _isConnected = false;
       return false;
     }
   }
@@ -80,12 +97,24 @@ class BluetoothService {
   /// Mencetak struk ke printer thermal
   Future<void> printReceipt(Uint8List data) async {
     if (!_isConnected) {
-      throw Exception('Printer tidak terhubung');
+      throw SocketException('Printer tidak terhubung');
     }
 
     _isPrinting = true;
     try {
       await _bluetoothPrint.printRawData(data);
+    } on SocketException {
+      // Tangani error koneksi saat mencetak
+      _isPrinting = false;
+      rethrow;
+    } on PlatformException {
+      // Tangani error platform saat mencetak
+      _isPrinting = false;
+      rethrow;
+    } catch (e) {
+      // Tangani error umum saat mencetak
+      _isPrinting = false;
+      throw Exception('Gagal mencetak: $e');
     } finally {
       _isPrinting = false;
     }
@@ -124,7 +153,14 @@ class BluetoothService {
           isConnected = await checkConnection();
           
           return isConnected;
+        } on SocketException {
+          // Tangani error koneksi secara spesifik
+          return false;
+        } on PlatformException {
+          // Tangani error platform secara spesifik
+          return false;
         } catch (e) {
+          // Tangani error umum
           return false;
         }
       } else {

lib/services/esc_pos_print_service.dart

@@ -5,8 +5,6 @@ import 'package:cashumit/models/receipt_item.dart';
 import 'package:flutter_esc_pos_utils/flutter_esc_pos_utils.dart';
 import 'package:image/image.dart' as img;
 import 'dart:io';
-import 'dart:ui' as ui;
-import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 
 /// Service untuk menghasilkan perintah ESC/POS menggunakan flutter_esc_pos_utils
@@ -342,7 +340,7 @@ class EscPosPrintService {
       final isConnectedBeforePrint = await bluetoothService.checkConnection();
       if (!isConnectedBeforePrint) {
         print('Printer tidak terhubung saat akan mencetak');
-        throw Exception('Printer tidak terhubung saat akan mencetak');
+        throw SocketException('Printer tidak terhubung saat akan mencetak');
       }
       
       print('Mengirim byte array ke printer...');
@@ -352,10 +350,20 @@ class EscPosPrintService {
         final Uint8List data = Uint8List.fromList(bytes);
         await bluetoothService.printReceipt(data);
         print('Perintah cetak berhasil dikirim');
+      } on SocketException catch (e) {
+        print('Socket error saat mengirim perintah cetak ke printer: $e');
+        throw SocketException('Koneksi ke printer terputus: ${e.message}');
+      } on PlatformException catch (e) {
+        print('Platform error saat mengirim perintah cetak ke printer: $e');
+        throw PlatformException(code: e.code, message: 'Error printer: ${e.message}');
       } catch (printError) {
         print('Error saat mengirim perintah cetak ke printer: $printError');
         throw Exception('Gagal mengirim perintah cetak: $printError');
       }
+    } on SocketException {
+      rethrow; // Lempar ulang error koneksi
+    } on PlatformException {
+      rethrow; // Lempar ulang error platform
     } catch (e, stackTrace) {
       print('Error saat mencetak struk: $e');
       print('Stack trace: $stackTrace');

lib/widgets/printing_status_card.dart

@@ -8,7 +8,7 @@ class PrintingStatusCard extends StatefulWidget {
     super.key,
     required this.isVisible,
     this.onDismiss,
-  }) : super();
+  });
 
   @override
   State<PrintingStatusCard> createState() => _PrintingStatusCardState();
@@ -92,10 +92,10 @@ class _PrintingStatusCardState extends State<PrintingStatusCard>
                       padding: const EdgeInsets.all(20),
                       decoration: BoxDecoration(
                         borderRadius: BorderRadius.circular(20),
-                        gradient: const LinearGradient(
+                        gradient: LinearGradient(
                           begin: Alignment.topLeft,
                           end: Alignment.bottomRight,
-                          colors: [
+                          colors: const [
                             Color(0xFF6A11CB),
                             Color(0xFF2575FC),
                           ],

lib/widgets/receipt_speed_dial.dart

@@ -12,9 +12,11 @@ class ReceiptSpeedDial extends StatelessWidget {
   final bool hasSourceAccount;
   final bool hasDestinationAccount;
   final Future<void> Function() onSendToFirefly;
+  final VoidCallback onPrintingStart;
+  final VoidCallback onPrintingEnd;
 
   const ReceiptSpeedDial({
-    Key? key,
+    super.key,
     required this.bluetoothService,
     required this.onCheckConnection,
     required this.onPrint,
@@ -24,7 +26,9 @@ class ReceiptSpeedDial extends StatelessWidget {
     required this.hasSourceAccount,
     required this.hasDestinationAccount,
     required this.onSendToFirefly,
-  }) : super(key: key);
+    required this.onPrintingStart,
+    required this.onPrintingEnd,
+  });
 
   @override
   Widget build(BuildContext context) {
@@ -74,10 +78,14 @@ class ReceiptSpeedDial extends StatelessWidget {
           onTap: bluetoothService.isPrinting
               ? null
               : () async {
+                  // Panggil callback untuk memulai printing status
+                  onPrintingStart();
+                  
+                  try {
                     // Periksa koneksi secara real-time
                     final isConnected = await onCheckConnection();
                     if (isConnected) {
-                    onPrint();
+                      await onPrint();
                     } else {
                       // Coba sambungkan kembali jika ada device yang tersimpan
                       if (bluetoothService.connectedDevice != null) {
@@ -95,7 +103,7 @@ class ReceiptSpeedDial extends StatelessWidget {
                           // Periksa koneksi lagi
                           final isConnectedAfterConnect = await onCheckConnection();
                           if (isConnectedAfterConnect) {
-                          onPrint();
+                            await onPrint();
                           } else {
                             ScaffoldMessenger.of(context).showSnackBar(
                               const SnackBar(
@@ -115,6 +123,16 @@ class ReceiptSpeedDial extends StatelessWidget {
                         );
                       }
                     }
+                  } catch (e) {
+                    // Tangani error secara umum
+                    ScaffoldMessenger.of(context).showSnackBar(
+                      SnackBar(
+                        content: Text('Terjadi kesalahan: $e')),
+                    );
+                  } finally {
+                    // Pastikan printing status selalu diakhiri
+                    onPrintingEnd();
+                  }
                 },
           backgroundColor: Colors.purple,
         ),