import 'package:flutter/material.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';
import 'package:flutter_test/flutter_test.dart';

import 'package:miler/data/service_profile.dart';
import 'package:miler/views/Dashboard/home/route_timeline.dart';
import 'package:miler/views/Dashboard/home/trip.dart';
import 'package:miler/views/Dashboard/home/trip_card.dart';
import 'package:miler/views/helpers/constants/Colorconstants.dart';

/// ─────────────────────────────────────────────────────────────────────────
/// ONE GRID, MEASURED
///
/// Home is read by running the eye down two columns: names on the left, bags
/// and figures on the right. Every point of drift in either costs a fixation,
/// and drift is invisible in code review — it comes from nested padding that
/// each looks correct where it is written.
///
/// The select-all was 36pt off the name axis, because the row is railed by its
/// caller *and* reserved a second rail inside the widget: two corrections for
/// one indent. Then it was 2pt off, because the rail it sits in is 2 wider
/// than the order rows' own. Both were found by measuring, not by reading.
/// ─────────────────────────────────────────────────────────────────────────
void main() {
  tearDown(() => ServiceProfile.setActive(ServiceProfile.parcel));

  Map<String, dynamic> meal(String id, String who, {int step = 1}) => {
    'orderid': id,
    'type': 'delivery',
    'step': step,
    'pickupcustomer': who,
    'kitchenid': 'K1',
    'kitchenname': 'Vidhya Kitchen',
    'sourcename': 'Vidhya Kitchen',
    'pickupcontactno': '9787698259',
    'pickupaddress': '4 Cross, RS Puram, Coimbatore',
    'dropaddress': '12 SNS Colony, Peelamedu, Coimbatore 641004',
    'Quantity': '1',
  };

  Future<void> pumpHome(
    WidgetTester tester, {
    double width = 390,
    double textScale = 1.0,
    int orders = 3,
  }) async {
    ServiceProfile.setActive(ServiceProfile.milkMan);
    // A real phone's geometry. A taller view with the same design size scales
    // every `.h` by the ratio and makes every measurement here a fiction —
    // which is exactly how a "116dp row" was once reported on a 62dp row.
    tester.view.physicalSize = Size(width * 3, 844 * 3);
    tester.view.devicePixelRatio = 3.0;
    addTearDown(tester.view.reset);

    final trip = Trip.fromStops(
      id: 'run',
      stops: [
        for (var i = 1; i <= orders; i++) meal('$i', 'Customer $i', step: i),
      ],
    );

    await tester.pumpWidget(
      ScreenUtilInit(
        designSize: const Size(390, 844),
        builder: (_, _) => MaterialApp(
          builder: (context, child) => MediaQuery(
            data: MediaQuery.of(
              context,
            ).copyWith(textScaler: TextScaler.linear(textScale)),
            child: child!,
          ),
          home: Scaffold(
            backgroundColor: ColorConstants.daylightSurface,
            body: SingleChildScrollView(
              child: TripCard(
                trip: trip,
                onToggleSelect: (_) {},
                onSelectAll: (_) {},
                onStopTap: (_) {},
                onCallStop: (_) {},
              ),
            ),
          ),
        ),
      ),
    );
    await tester.pumpAndSettle();
  }

  group('the two columns', () {
    testWidgets('every customer name starts on one axis', (tester) async {
      await pumpHome(tester, orders: 4);
      final lefts = [
        for (var i = 1; i <= 4; i++)
          tester.getRect(find.text('Customer $i')).left,
      ];
      for (final l in lefts) {
        expect(l, closeTo(lefts.first, 0.5));
      }
    });

    testWidgets('every Bag ends on one axis', (tester) async {
      await pumpHome(tester, orders: 4);
      final rights = [
        for (var i = 1; i <= 4; i++) tester.getRect(find.text('Bag $i')).right,
      ];
      for (final r in rights) {
        expect(r, closeTo(rights.first, 0.5));
      }
    });

    testWidgets('the select-all label sits on the name axis', (tester) async {
      await pumpHome(tester);

      // The regression this file exists for. It heads the list it selects, so
      // it starts where the list starts — not one rail further in, and not two
      // points off it either.
      final label = tester.getRect(find.text('Select all 3')).left;
      final name = tester.getRect(find.text('Customer 1')).left;
      expect(
        label,
        closeTo(name, 0.5),
        reason: 'the select-all is $label, the names are $name',
      );
    });

    testWidgets('the kitchen and its state share one axis', (tester) async {
      await pumpHome(tester);
      expect(
        tester.getRect(find.text('Pending')).left,
        closeTo(tester.getRect(find.text('Vidhya Kitchen')).left, 0.5),
      );
    });
  });

  group('type ranks the page', () {
    testWidgets('the kitchen outranks the customer, which outranks the area', (
      tester,
    ) async {
      await pumpHome(tester);

      final kitchen = tester.widget<Text>(find.text('Vidhya Kitchen')).style!;
      final name = tester.widget<Text>(find.text('Customer 1')).style!;
      final area = tester.widget<Text>(find.text('Peelamedu').first).style!;

      expect(kitchen.fontSize, 19);
      expect(kitchen.fontWeight, FontWeight.w700);
      expect(name.fontSize, 15);
      expect(area.fontSize, 12.5);

      // A customer row must never overpower the heading it sits under.
      expect(name.fontSize!, lessThan(kitchen.fontSize!));
      expect(area.fontSize!, lessThan(name.fontSize!));
      expect(area.fontSize!, greaterThanOrEqualTo(12));
    });
  });

  group('rows grow, they do not clip', () {
    for (final (width, scale) in const [
      (390.0, 1.0),
      (390.0, 2.0),
      (375.0, 1.0),
      (375.0, 2.0),
      (320.0, 1.0),
      (320.0, 2.0),
    ]) {
      testWidgets('${width.toInt()}px @ ${scale}x lays out clean', (
        tester,
      ) async {
        await pumpHome(tester, width: width, textScale: scale, orders: 4);
        expect(
          tester.takeException(),
          isNull,
          reason: 'no overflow at ${width.toInt()}px / ${scale}x',
        );
      });
    }

    testWidgets('a one-line row clears the touch floor and grows at 2x', (
      tester,
    ) async {
      await pumpHome(tester);
      final at1x = tester.getRect(find.byType(PickupTimelineStep).first).height;
      expect(
        at1x,
        greaterThanOrEqualTo(44),
        reason: 'a step is reachable with a gloved thumb',
      );

      await pumpHome(tester, textScale: 2.0);
      final at2x = tester.getRect(find.byType(PickupTimelineStep).first).height;
      expect(
        at2x,
        greaterThan(at1x),
        reason: 'density comes from removing furniture, never from clipping',
      );
    });
  });
}