import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:pad_scanner/pages/registration/registration_calculations.dart';
import 'package:pad_scanner/services/api_service.dart';

void main() {
  group('registration calculations', () {
    test('calculates overview stats by item status', () {
      final stats = overviewStats(
        _overview([
          _item('R1', status: 'not_shelved'),
          _item('R2', status: 'on_shelf'),
          _item('R3', status: 'transferred'),
        ]),
      );

      expect(stats.totalCount, 3);
      expect(stats.shelvedCount, 1);
      expect(stats.transferredCount, 1);
    });

    test('splits overview items into scanned and unscanned groups', () {
      final sections = splitOverviewItems(
        overview: _overview([_item('R1'), _item('R2'), _item('R3')]),
        zongpaiNos: ['R1', 'R3'],
      );

      expect(sections.scanned.map((item) => item.zongpaiNo), ['R1', 'R3']);
      expect(sections.unscanned.map((item) => item.zongpaiNo), ['R2']);
      expect(sections.hasDivider, isTrue);
    });

    test('finds located scanned items', () {
      final overview = _overview([
        _item('R1', status: 'on_shelf'),
        _item('R2', status: 'transferred'),
        _item('R3', status: 'on_shelf'),
      ]);

      expect(
        findOnShelfItemsInScanned(
          overview: overview,
          zongpaiNos: ['R1', 'R2'],
        ).map((item) => item.zongpaiNo),
        ['R1'],
      );
      expect(
        findTransferredItemsInScanned(
          overview: overview,
          zongpaiNos: ['R1', 'R2'],
        ).map((item) => item.zongpaiNo),
        ['R2'],
      );
      expect(
        hasAnyLocatedInScanned(overview: overview, zongpaiNos: ['R1']),
        isTrue,
      );
      expect(
        hasAnyLocatedInScanned(overview: overview, zongpaiNos: ['R4']),
        isFalse,
      );
    });

    test('maps row colors for scanned and unscanned states', () {
      expect(
        registrationBarColor(
          status: 'on_shelf',
          isScanned: true,
          isTransitTarget: false,
        ),
        Colors.red,
      );
      expect(
        registrationRowBgColor(
          status: 'transferred',
          isScanned: false,
          isTransitTarget: false,
        ),
        const Color(0xFFFFF3E0),
      );
    });
  });
}

PaichaOverviewResult _overview(List<PaichaOverviewItem> items) {
  return PaichaOverviewResult(
    success: true,
    totalCount: items.length,
    items: items,
  );
}

PaichaOverviewItem _item(String zongpaiNo, {String status = 'not_shelved'}) {
  return PaichaOverviewItem(zongpaiNo: zongpaiNo, quantity: 1, status: status);
}