import 'package:flutter_test/flutter_test.dart';
import 'package:pad_scanner/pages/boxing/boxing_calculations.dart';
import 'package:pad_scanner/pages/boxing/boxing_models.dart';
import 'package:pad_scanner/services/api_service.dart';

void main() {
  group('boxing calculations', () {
    final currentBoxes = [
      CurrentZongpaiBoxData(boxItemId: 1, boxNo: 1, quantity: 4),
      CurrentZongpaiBoxData(boxItemId: 2, boxNo: 2, quantity: 3),
    ];

    test('calculates packed and remaining quantity', () {
      expect(packedQuantity(currentBoxes), 7);
      expect(
        remainingQuantity(totalQuantity: 10, currentBoxes: currentBoxes),
        3,
      );
    });

    test('detects quantity too high only when remaining is positive', () {
      expect(quantityTooHigh(remainingQuantity: 3, quantityText: '4'), isTrue);
      expect(quantityTooHigh(remainingQuantity: 3, quantityText: '3'), isFalse);
      expect(quantityTooHigh(remainingQuantity: 0, quantityText: '1'), isFalse);
    });

    test('validates submit conditions', () {
      expect(
        canSubmitBoxing(
          isSubmitting: false,
          phase: BoxingPhase.scanned,
          zongpaiNo: 'ZP001',
          boxNoText: '1',
          quantityText: '2',
          remainingQuantity: 3,
          quantityTooHigh: false,
          isDuplicateBoxNo: false,
        ),
        isTrue,
      );

      expect(
        canSubmitBoxing(
          isSubmitting: true,
          phase: BoxingPhase.scanned,
          zongpaiNo: 'ZP001',
          boxNoText: '1',
          quantityText: '2',
          remainingQuantity: 3,
          quantityTooHigh: false,
          isDuplicateBoxNo: false,
        ),
        isFalse,
      );
    });

    test('detects duplicate box number in single code mode', () {
      expect(
        singleCodeBoxNoIsDuplicate(
          boxNoText: '1',
          currentBoxes: currentBoxes,
          editingBoxItemId: null,
        ),
        isTrue,
      );
      expect(
        singleCodeBoxNoIsDuplicate(
          boxNoText: '1',
          currentBoxes: currentBoxes,
          editingBoxItemId: 1,
        ),
        isFalse,
      );
    });

    test('merges visible many-to-one items by box item id', () {
      final existingBoxes = [
        BoxDetailData(
          boxNo: 8,
          items: [
            BoxItemData(
              boxItemId: 11,
              zongpaiNo: 'ZP011',
              workOrderNo: 'WO011',
              quantity: 2,
              totalQuantity: 6,
            ),
          ],
        ),
      ];
      final packedItems = [
        const ManyToOnePackedItem(
          boxItemId: 11,
          zongpaiNo: 'ZP011',
          paichanNo: 'PC001',
          workOrderNo: 'WO011',
          boxNo: 8,
          quantity: 3,
          totalQuantity: 6,
        ),
        const ManyToOnePackedItem(
          boxItemId: 12,
          zongpaiNo: 'ZP012',
          paichanNo: 'PC001',
          workOrderNo: 'WO012',
          boxNo: 8,
          quantity: 1,
          totalQuantity: 4,
        ),
      ];

      final visible = visibleManyToOnePackedItems(
        boxNo: 8,
        existingBoxes: existingBoxes,
        packedItems: packedItems,
        paichanNo: 'PC001',
      );

      expect(visible.map((item) => item.boxItemId), [11, 12]);
      expect(visible.first.quantity, 3);
    });
  });
}