parser logic added

test/receipt_parser_test.dart

@@ -44,17 +44,59 @@ BROODSTICKS OLIJF
     expect(items.single.quantity, 4);
   });
 
-  test('drops discount rows and Dutch totals', () {
-    final items = ReceiptParser.parse('''
+  test('folds a discount into the previous item', () {
+    final result = ReceiptParser.parseReceipt('''
 AARDBEIEN 7,98
 ACTIE AARDBEIEN -2,00
-Totaal 82,99
-VISA 82,99
-Totaal korting: -2,21
+Totaal 5,98
+VISA 5,98
+Totaal korting: -2,00
 ''');
 
-    expect(items.map((item) => item.name), ['AARDBEIEN']);
-    expect(items.single.price, 7.98);
+    expect(result.items.map((item) => item.name), ['AARDBEIEN']);
+    expect(result.items.single.price, 5.98);
+    expect(result.items.single.discount, -2.00);
+    expect(result.validationPassed, isTrue);
+  });
+
+  test('parses Kruidvat-style inline quantity', () {
+    final items = ReceiptParser.parse('''
+ZEEPTABLET NEUTRAL 2 X 3,99 PER STUK 7,98
+KORTING NEUTRAL ZE.HP -1,00
+Totaal 6,98
+''');
+
+    expect(items, hasLength(1));
+    expect(items.single.name, 'ZEEPTABLET NEUTRAL');
+    expect(items.single.quantity, 2);
+    expect(items.single.unitPrice, 3.99);
+    expect(items.single.price, 6.98);
+  });
+
+  test('parses Lidl-style price-reduction lines', () {
+    final items = ReceiptParser.parse('''
+MELK 1,09 B
+In prijs verlaagd -0,50
+Totaal 0,59
+''');
+
+    expect(items, hasLength(1));
+    expect(items.single.name, 'MELK');
+    expect(items.single.price, 0.59);
+  });
+
+  test('ignores BTW breakdown rows', () {
+    final items = ReceiptParser.parse('''
+MELK 2,09
+Totaal 2,09
+BTW
+B 9% 0,17
+C 21% 0,00
+Bedr.Excl 1,92
+Bedr.Incl 2,09
+''');
+
+    expect(items.map((item) => item.name), ['MELK']);
   });
 
   test('pairs a name column with a price column from OCR', () {
@@ -66,10 +108,16 @@ Totaal korting: -2,21
     expect(items.first.name, 'JUMBO BIO VOLLE MELK');
     expect(items.first.price, 2.09);
 
-    final eggs = items.firstWhere((item) => item.name.startsWith('BIOLOGISCH EI'));
+    final eggs = items.firstWhere(
+      (item) => item.name.startsWith('BIOLOGISCH EI'),
+    );
     expect(eggs.quantity, 2);
     expect(eggs.price, 5.58);
 
+    final berries = items.firstWhere((item) => item.name == 'AARDBEIEN');
+    expect(berries.quantity, 2);
+    expect(berries.price, 5.98);
+
     expect(items.last.name, 'JUMBO PREM LUIER M4');
     expect(items.last.price, 6.20);
     expect(items, hasLength(26));