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/data/stop_area.dart';
import 'package:miler/views/Dashboard/home/homepage_banner.dart';
import 'package:miler/views/Dashboard/pickups/pickups.dart';
import 'package:miler/views/helpers/constants/Colorconstants.dart';

/// ─────────────────────────────────────────────────────────────────────────
/// THE WORK QUEUE, NOT A LIST OF CARDS
///
/// Deliveries answers one question — *where do I go now, and what do I do
/// there* — and the whole screen is ranked around it: NOW is the command
/// object, UP NEXT is a glance, LATER recedes. That ranking has to be legible
/// **before** the labels are read, or the labels are the only thing carrying
/// it.
///
/// These pin the invariants that ranking depends on, plus the two geometry
/// rules the bottom of this screen has broken twice.
/// ─────────────────────────────────────────────────────────────────────────
void main() {
  _realAddresses();
  tearDown(() => ServiceProfile.setActive(ServiceProfile.parcel));

  Map<String, dynamic> drop(String id, String who, {String? address}) => {
    'orderid': id,
    'type': 'delivery',
    'orderstatus': 'outfordelivery',
    'pickupcustomer': who,
    'sourcename': 'DailyGrubs RS Puram Kitchen',
    'kitchenname': 'DailyGrubs RS Puram Kitchen',
    'pickupaddress': '9 Mettupalayam Road, RS Puram, Coimbatore 641002',
    'dropaddress': address ?? '12, SNS Colony, Peelamedu, Coimbatore 641004',
    'pickupcontactno': '9787698259',
  };

  group('the collapsed queue names a place, not a street', () {
    test('an area, never a truncated address', () {
      // The screen's own anti-pattern, named in the brief: twenty rows of
      // `SEQTEST Gandhipur…` answer nothing a blank line would not have.
      final area = areaOf(drop('1', 'Joe Mathew'));
      expect(area, isNot(contains('641004')));
      expect(area, isNot(contains('12,')));
      expect(area.length, lessThan(24));
      expect(RegExp(r'[0-9]').hasMatch(area), isFalse);
    });

    test('a delivery names where the bag is GOING', () {
      ServiceProfile.setActive(ServiceProfile.milkMan);
      // Once he is carrying it, the kitchen is supporting information. The
      // destination is the question.
      // `Peelamedu`, not `SNS Colony` — the locality, not the sub-locality.
      // See the live-data group above for why the rule prefers a one-word name.
      expect(areaOf(drop('1', 'Joe Mathew'), preferDrop: true), 'Peelamedu');
      expect(
        areaOf(drop('1', 'Joe Mathew'), preferDrop: false),
        'Mettupalayam Road'.contains('9') ? isNotEmpty : 'RS Puram',
      );
    });

    test('a stop with nothing usable yields nothing, never a placeholder', () {
      expect(areaOf(const {'orderid': '1'}), '');
    });

    test('one implementation, shared with Home', () {
      // Two copies of this rule got the same subtle case wrong in the same
      // way: `12 SNS Colony` returned as an area because it is not *entirely*
      // digits. One function is one place to find that.
      expect(
        areaOf({'dropaddress': '4/2 Cross Cut Road, Gandhipuram, 641012'}),
        'Gandhipuram',
      );
    });
  });

  group('the bottom slot is one slot', () {
    /// `maxHeight` is expressed in `.h`, like every dimension in this app, so
    /// these run inside a pumped `ScreenUtilInit` rather than as pure tests.
    Future<void> ready(WidgetTester tester) async {
      tester.view.physicalSize = const Size(390 * 3, 844 * 3);
      tester.view.devicePixelRatio = 3.0;
      addTearDown(tester.view.reset);
      await tester.pumpWidget(
        ScreenUtilInit(
          designSize: const Size(390, 844),
          builder: (_, _) => const MaterialApp(home: SizedBox.shrink()),
        ),
      );
    }

    testWidgets('the reservation follows whichever surface is showing', (
      tester,
    ) async {
      await ready(tester);
      const inset = 34.0;

      // Live stop: the banner is up, and the floor clears the banner.
      expect(
        bottomReservationFor(inset: inset, live: true, unreleased: true),
        inset + ActivePickupBanner.maxHeight,
      );
      // A live stop suppresses the start bar, so the banner wins even when
      // there is unreleased work — the two never stack.
      expect(
        bottomReservationFor(inset: inset, live: true, unreleased: false),
        inset + ActivePickupBanner.maxHeight,
      );
      // Nothing running, load in hand: the start bar.
      expect(
        bottomReservationFor(inset: inset, live: false, unreleased: true),
        inset + StartRoundBar.maxHeight,
      );
    });

    testWidgets('the device inset is always counted', (tester) async {
      await ready(tester);
      // The regression: the live branch was a flat `80.h` that forgot the
      // inset, so on a gesture-navigation phone the last row of the run sat
      // behind the banner *and* behind the navigation.
      for (final live in const [true, false]) {
        final withInset = bottomReservationFor(
          inset: 34,
          live: live,
          unreleased: true,
        );
        final without = bottomReservationFor(
          inset: 0,
          live: live,
          unreleased: true,
        );
        expect(withInset - without, 34);
      }
    });

    testWidgets('an idle queue reserves almost nothing', (tester) async {
      await ready(tester);
      expect(
        bottomReservationFor(inset: 0, live: false, unreleased: false),
        lessThan(StartRoundBar.maxHeight),
      );
    });

    testWidgets('both surfaces declare a real height', (tester) async {
      await ready(tester);
      // Measured, not guessed. Each is the only thing that knows how much of
      // the list it covers.
      expect(ActivePickupBanner.maxHeight, greaterThan(48));
      expect(StartRoundBar.maxHeight, greaterThan(48));
    });
  });

  group('the command surface', () {
    Future<void> pumpBar(
      WidgetTester tester, {
      double width = 390,
      double textScale = 1.0,
      int count = 5,
    }) async {
      ServiceProfile.setActive(ServiceProfile.milkMan);
      tester.view.physicalSize = Size(width * 3, 844 * 3);
      tester.view.devicePixelRatio = 3.0;
      addTearDown(tester.view.reset);

      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: Align(
                alignment: Alignment.bottomCenter,
                child: StartRoundBar(
                  count: count,
                  busy: false,
                  onPressed: () {},
                ),
              ),
            ),
          ),
        ),
      );
      await tester.pumpAndSettle();
    }

    testWidgets('it says what is in hand and what the press does', (
      tester,
    ) async {
      await pumpBar(tester);
      // Setting off is reversible and operational, so it is a press — unlike
      // Picked and Delivered, which are assertions about custody.
      expect(find.textContaining('Start'), findsOneWidget);
    });

    for (final (width, scale) in const [
      (390.0, 1.0),
      (390.0, 1.3),
      (390.0, 2.0),
      (375.0, 2.0),
      (320.0, 1.0),
      (320.0, 2.0),
    ]) {
      testWidgets('${width.toInt()}px @ ${scale}x lays out clean', (
        tester,
      ) async {
        await pumpBar(tester, width: width, textScale: scale, count: 12);
        expect(tester.takeException(), isNull);
      });
    }

    testWidgets('it never wraps itself in a second SafeArea', (tester) async {
      await pumpBar(tester);
      // `BottomPage.bottomInset` is the one owner of the device inset on this
      // screen. A `SafeArea` here would count it twice and float the bar a
      // navigation bar's height off the bottom of the screen.
      expect(
        find.descendant(
          of: find.byType(StartRoundBar),
          matching: find.byType(SafeArea),
        ),
        findsNothing,
      );
    });
  });
}

/// Real addresses from the live tenant, added after seeing them render on a
/// device. The rule that only skipped digits printed the landmark —
/// `Coimbatore Gandhipuram Mofussil Bus Stand` — on every row of the run.
void _realAddresses() {
  group('the area rule against live data', () {
    const cases = <String, String>{
      'Coimbatore Gandhipuram Mofussil Bus Stand, Sathyamurthi Road, '
              'Gandhipuram, Ward 54, Central Zone, Coimbatore, '
              'Coimbatore North, Coimbatore, Tamil Nadu, 641001, India':
          'Gandhipuram',
      '12, SNS Colony, Peelamedu, Coimbatore 641004': 'Peelamedu',
      '4 Cross, RS Puram, Coimbatore 641002': 'RS Puram',
      '19, Thadagam Road, Venkitapuram, Coimbatore': 'Venkitapuram',
    };

    cases.forEach((address, expected) {
      test('"${address.split(',').first}…" → $expected', () {
        expect(areaOf({'dropaddress': address}), expected);
      });
    });

    test('a landmark never wins over the locality behind it', () {
      final area = areaOf(const {
        'dropaddress':
            'Coimbatore Gandhipuram Mofussil Bus Stand, '
            'Sathyamurthi Road, Gandhipuram, Coimbatore',
      });
      expect(area.split(' ').length, 1, reason: 'an area is a name');
      expect(area, isNot(contains('Bus Stand')));
    });
  });
}