parser logic added

lib/scan_screen.dart

@@ -8,6 +8,8 @@ import 'package:flutter/services.dart';
 import 'package:google_mlkit_text_recognition/google_mlkit_text_recognition.dart';
 import 'package:image_picker/image_picker.dart';
 
+import 'crop_receipt_screen.dart';
+import 'models/line_item.dart';
 import 'review_screen.dart';
 import 'services/app_settings.dart';
 import 'services/product_repository.dart';
@@ -17,11 +19,7 @@ import 'utils/supermarkets.dart';
 import 'widgets/settings_button.dart';
 
 class ScanScreen extends StatefulWidget {
-  const ScanScreen({
-    super.key,
-    required this.repository,
-    this.onTripSaved,
-  });
+  const ScanScreen({super.key, required this.repository, this.onTripSaved});
 
   final ProductRepository repository;
   final VoidCallback? onTripSaved;
@@ -51,7 +49,7 @@ class _ScanScreenState extends State<ScanScreen> {
       if (!mounted || response.isEmpty) return;
       final file = response.file;
       if (file != null) {
-        await _runOcr(file.path);
+        await _cropThenOcr(file.path);
       }
     } on UnimplementedError {
       // Desktop / platforms that do not support lost-data recovery.
@@ -59,12 +57,9 @@ class _ScanScreenState extends State<ScanScreen> {
   }
 
   Future<void> _capture(ImageSource source) async {
-    final file = await _picker.pickImage(
-      source: source,
-      imageQuality: 95,
-    );
+    final file = await _picker.pickImage(source: source, imageQuality: 95);
     if (file == null || !mounted) return;
-    await _runOcr(file.path);
+    await _cropThenOcr(file.path);
   }
 
   Future<void> _scanSampleReceipt() async {
@@ -75,7 +70,7 @@ class _ScanScreenState extends State<ScanScreen> {
       );
       await file.writeAsBytes(data.buffer.asUint8List(), flush: true);
       if (!mounted) return;
-      await _runOcr(file.path);
+      await _cropThenOcr(file.path);
     } catch (_) {
       if (!mounted) return;
       setState(() {
@@ -84,6 +79,17 @@ class _ScanScreenState extends State<ScanScreen> {
     }
   }
 
+  Future<void> _cropThenOcr(String imagePath) async {
+    final croppedPath = await Navigator.of(context).push<String>(
+      MaterialPageRoute(
+        fullscreenDialog: true,
+        builder: (_) => CropReceiptScreen(imagePath: imagePath),
+      ),
+    );
+    if (croppedPath == null || !mounted) return;
+    await _runOcr(croppedPath);
+  }
+
   Future<void> _runOcr(String imagePath) async {
     setState(() {
       _busy = true;
@@ -127,14 +133,26 @@ class _ScanScreenState extends State<ScanScreen> {
     }
   }
 
+  Future<void> _enterManually() async {
+    await _openReview('', items: const []);
+  }
+
   String _ocrFailureMessage(String? detail) {
     const fallback = 'Could not read text from this image.';
     if (detail == null || detail.trim().isEmpty) return fallback;
     return '$fallback\n$detail';
   }
 
-  Future<void> _openReview(String rawText) async {
-    final items = ReceiptParser.parse(rawText);
+  Future<void> _openReview(
+    String rawText, {
+    List<LineItem>? items,
+    String? imagePath,
+  }) async {
+    final parsedItems = items;
+    ReceiptParseResult? parsed;
+    if (parsedItems == null) {
+      parsed = ReceiptParser.parseReceipt(rawText);
+    }
     if (!mounted) return;
     final names =
         SettingsScope.maybeOf(context)?.supermarkets.map((s) => s.name) ??
@@ -142,11 +160,13 @@ class _ScanScreenState extends State<ScanScreen> {
     final saved = await Navigator.of(context).push<bool>(
       MaterialPageRoute(
         builder: (_) => ReviewScreen(
-          items: items,
+          items: parsedItems ?? parsed!.items,
           rawText: rawText,
           repository: widget.repository,
-          imagePath: _imagePath,
+          imagePath: imagePath ?? (items == null ? _imagePath : null),
           supermarketNames: names.toList(),
+          needsReview: parsed != null && !parsed.validationPassed,
+          detectedStore: parsed?.store,
         ),
       ),
     );
@@ -182,6 +202,12 @@ class _ScanScreenState extends State<ScanScreen> {
                 label: const Text('Pick from gallery'),
               ),
               const SizedBox(height: 8),
+              OutlinedButton.icon(
+                onPressed: _busy ? null : _enterManually,
+                icon: const Icon(Icons.edit_note_outlined),
+                label: const Text('Enter manually'),
+              ),
+              const SizedBox(height: 8),
               TextButton.icon(
                 onPressed: _busy ? null : _scanSampleReceipt,
                 icon: const Icon(Icons.receipt_long_outlined),
@@ -198,13 +224,12 @@ class _ScanScreenState extends State<ScanScreen> {
                 const SizedBox(height: 16),
                 const LinearProgressIndicator(),
                 const SizedBox(height: 8),
-                Text(
-                  'Reading text…',
-                  style: theme.textTheme.bodyMedium,
-                ),
+                Text('Reading text…', style: theme.textTheme.bodyMedium),
               ],
               const SizedBox(height: 16),
-              Expanded(child: _ResultPane(text: _extractedText, error: _error)),
+              Expanded(
+                child: _ResultPane(text: _extractedText, error: _error),
+              ),
             ],
           ),
         ),
@@ -236,7 +261,7 @@ class _ResultPane extends StatelessWidget {
     if (text.isEmpty) {
       return Center(
         child: Text(
-          'Take a photo of a shopping receipt, or pick one from the gallery.\n\nConfirmed trips show up in Shop log.',
+          'Scan a receipt or enter a trip by hand.\n\nConfirmed trips show up in Shop log.',
           textAlign: TextAlign.center,
           style: theme.textTheme.bodyLarge,
         ),