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

import 'package:miler/data/service_profile.dart';
import 'package:miler/views/Dashboard/home/trip.dart';
import 'package:miler/views/Dashboard/home/trip_card.dart';
import 'package:miler/views/Dashboard/home/trip_progress_rail.dart';
import 'package:miler/views/Dashboard/pickups/stop_type.dart';

/// ─────────────────────────────────────────────────────────────────────────
/// ONE APP, TWO DAYS
///
/// The whole merge rests on one promise, in both directions:
///
///  • A rider whose login carries a **meal tenant id** gets the meal process —
///    kitchen loading, deliveries, no money, no return leg.
///  • A rider **without** one gets the parcel app exactly as it was: hub to hub,
///    bookings, cash, per-stop decisions.
///
/// The second half of that is the one that can break silently. Nobody files a
/// bug saying "the meal build looks fine"; a parcel rider losing his cash screen
/// or gaining a kitchen heading is found at a customer's door. So every meal
/// assertion below has a parcel one beside it.
/// ─────────────────────────────────────────────────────────────────────────
void main() {
  TestWidgetsFlutterBinding.ensureInitialized();

  setUp(() => SharedPreferences.setMockInitialValues({}));
  tearDown(() => ServiceProfile.setActive(ServiceProfile.parcel));

  Map<String, dynamic> stop({
    required String id,
    String status = 'ASSIGNED',
    String kitchen = '',
    num cash = 0,
  }) => {
    'orderid': id,
    'step': int.parse(id),
    'pickupcustomer': 'Customer $id',
    'pickupaddress': '$id Main Road, RS Puram',
    'orderstatus': status,
    if (kitchen.isNotEmpty) 'kitchenname': kitchen,
    if (kitchen.isNotEmpty) 'baglabel': 'BAG-$id',
    if (cash > 0) 'collectionamt': cash,
    'pickuplat': 13.08,
    'pickuplon': 80.21,
  };

  Future<void> pumpRoute(
    WidgetTester tester, {
    required List<Map<String, dynamic>> stops,
  }) async {
    tester.view.physicalSize = const Size(1080, 2600);
    tester.view.devicePixelRatio = 3.0;
    addTearDown(tester.view.resetPhysicalSize);
    addTearDown(tester.view.resetDevicePixelRatio);

    final trip = Trip.fromStops(id: 't', stops: stops);
    await tester.pumpWidget(
      ScreenUtilInit(
        designSize: const Size(390, 844),
        builder: (_, _) => MaterialApp(
          home: Scaffold(
            body: SingleChildScrollView(
              child: TripCard(
                trip: trip,
                onToggleSelect: (_) {},
                onViewRoute: () {},
              ).buildStops(),
            ),
          ),
        ),
      ),
    );
    await tester.pumpAndSettle();
  }

  // ══════════════════════════════════════════════════════════════════════
  // THE MEAL LOGIN — what a tenant id buys
  // ══════════════════════════════════════════════════════════════════════
  group('a rider who logs in on a meal tenant', () {
    setUp(() => ServiceProfile.setActive(ServiceProfile.meals));

    testWidgets('starts at a kitchen, and never comes back to a hub', (
      tester,
    ) async {
      await pumpRoute(
        tester,
        stops: [
          stop(id: '1', kitchen: 'Kitchen 1'),
          stop(id: '2', kitchen: 'Kitchen 1'),
        ],
      );

      // ── Ported to the timeline ──
      //
      // `START · KITCHEN` was the hub row's label, and the hub row is gone with
      // the cards: the run opens on one line-agnostic head instead. What that
      // row was really holding is the half below, which is unchanged — a meal
      // run has no return leg.
      expect(find.text('TODAY’S RUN'), findsOneWidget);
      // His day ends at the last subscriber's door. A return leg to a warehouse
      // he has never seen is an un-completable step at the end of a route he
      // has in fact finished.
      expect(find.text('RETURN · HUB'), findsNothing);
      expect(find.text('START · HUB'), findsNothing);
    });

    testWidgets('sees his route grouped under the kitchen it comes from', (
      tester,
    ) async {
      await pumpRoute(
        tester,
        stops: [
          stop(id: '1', kitchen: 'Kitchen 1'),
          stop(id: '2', kitchen: 'Kitchen 2'),
        ],
      );

      // Two kitchens, two headings — the shape of a meal day, which a flat list
      // hides until he opens every card.
      expect(find.text('Kitchen 1'), findsOneWidget);
      expect(find.text('Kitchen 2'), findsOneWidget);
      // And the bag, which is what he checks against the box in his hand.
      // The label the kitchen printed, as [BagManifest] hands it over — the
      // `Bag ` prefix belonged to the card's chip and went with it, which
      // stopped a printed `BAG-1` reading as `Bag BAG-1`.
      expect(find.text('BAG-1'), findsOneWidget);
    });

    test('works deliveries, not bookings', () {
      final p = ServiceProfile.active;
      expect(p.workTabLabel, 'Deliveries');
      expect(p.jobNounPlural, 'deliveries');
      expect(p.completionVerb, 'Delivered');
    });

    test('hands a subscriber food — he does not collect from one', () {
      // Every stop after the kitchen is a drop, whether or not the payload
      // bothered to label it.
      expect(stopKindOf(stop(id: '1')).isDelivery, isTrue);
    });

    test('is never asked for money, however the payload is priced', () {
      // Subscribers pay the client monthly. A rupee figure at the door is a
      // question the rider cannot answer and must not be asked.
      expect(stopCollectionAmount(stop(id: '1', cash: 450)), 0);
      expect(ServiceProfile.active.collectsCash, isFalse);
    });

    test('takes the whole assignment, not stop by stop', () {
      // He cannot decline one subscriber's lunch.
      expect(ServiceProfile.active.acceptsPerStop, isFalse);
    });

    test('photographs the crate once, at the counter', () {
      expect(ServiceProfile.active.bulkLoadProof, isTrue);
    });

    test('keeps the order on Home until it is physically in his box', () {
      // Accepting changes nothing physical — the food is still in a kitchen he
      // has not reached.
      expect(ServiceProfile.active.handsOffAtCollection, isTrue);
    });
  });

  // ══════════════════════════════════════════════════════════════════════
  // THE PARCEL LOGIN — nothing moved
  // ══════════════════════════════════════════════════════════════════════
  group('a rider who logs in without a meal tenant', () {
    setUp(() => ServiceProfile.setActive(ServiceProfile.parcel));

    testWidgets('gets the hub-to-hub route he has always had', (tester) async {
      await pumpRoute(
        tester,
        stops: [
          stop(id: '1'),
          stop(id: '2'),
        ],
      );

      // The parcel day is still a loop: he leaves the hub empty, fills up at
      // customer doors and comes back. The head is shared with the meal run;
      // the closing leg is what tells the two apart.
      expect(find.text('TODAY’S RUN'), findsOneWidget);
      expect(find.text('RETURN · HUB'), findsOneWidget);
      expect(find.text('START · KITCHEN'), findsNothing);
    });

    testWidgets('gets no kitchen sections and no meal chrome', (tester) async {
      // Nothing from the meal run may leak onto a parcel route. The *source
      // pill* is data-driven and stays if a parcel payload ever names one —
      // see [StopSourceLine] — but the grouping, its counts and its bulk
      // collect are meal-flow structure and must not appear.
      await pumpRoute(
        tester,
        stops: [stop(id: '1', kitchen: 'Kitchen 1')],
      );
      expect(find.text('1 meal · 1 to accept'), findsNothing);
      expect(find.textContaining('ready to collect'), findsNothing);
      expect(find.text('MEAL'), findsNothing);
      // The stop is drawn — it is just drawn flat. A parcel route has no
      // counter to group under, so the timeline is one node per stop and the
      // header *is* the stop. `PICKUP` was the card's type mark; the type is
      // progressive disclosure in the detail sheet now.
      expect(find.text('Customer 1'), findsOneWidget);
      expect(find.text('Kitchen 1'), findsNothing);
      // "Collect 1" on the meta line is the parcel card's own count of what he
      // is picking up at this door, and stays. The heading assertions above are
      // what tell the two apart.
    });

    test('still works bookings', () {
      final p = ServiceProfile.active;
      expect(p.workTabLabel, 'Bookings');
      expect(p.jobNounPlural, 'bookings');
      expect(p.completionVerb, 'Picked up');
    });

    test('still collects the cash the stop is priced at', () {
      // The failure this app cannot afford: a rider at a door with no way to
      // record the money he is holding.
      expect(stopCollectionAmount(stop(id: '1', cash: 450)), 450);
      expect(ServiceProfile.active.collectsCash, isTrue);
    });

    test('still decides stop by stop', () {
      expect(ServiceProfile.active.acceptsPerStop, isTrue);
    });

    test('an unlabelled stop is still a pickup', () {
      expect(stopKindOf(stop(id: '1')), StopKind.pickup);
    });
  });

  // ══════════════════════════════════════════════════════════════════════
  // THE SWITCH ITSELF
  // ══════════════════════════════════════════════════════════════════════
  group('what decides which day he gets', () {
    Future<ServiceProfile> loginWith(Map<String, Object> prefs) async {
      SharedPreferences.setMockInitialValues(prefs);
      final p = await resolveServiceProfile();
      ServiceProfile.setActive(p);
      return p;
    }

    test('a recognised meal tenant name puts him on the meal line', () async {
      final p = await loginWith({'tenantname': 'DailyGrubs'});
      expect(p.line, ServiceLine.milkMan);
    });

    test(
      'no tenant, an unknown tenant, or a blank one is a parcel day',
      () async {
        expect((await loginWith({})).line, ServiceLine.parcel);
        expect((await loginWith({'tenantid': 4242})).line, ServiceLine.parcel);
        expect((await loginWith({'tenantname': ''})).line, ServiceLine.parcel);
      },
    );

    test('the fallback direction is the safe one', () async {
      // Wrong-way round, a live parcel rider loses the screen that records a
      // customer's cash. This way, a meal rider sees a payment prompt he can
      // dismiss.
      final p = await loginWith({'tenantname': 'something-nobody-configured'});
      expect(p.collectsCash, isTrue);
    });
  });

  // ── The round does not end at a warehouse ──
  //
  // A logistics day is a loop: leave the hub empty, fill up at customer doors,
  // return with the consignments — so "then hub" is the true last leg and the
  // rider is not finished until he is there. A meal rider finishes at the last
  // subscriber's door and goes home. Telling him his round ends at a building he
  // has never visited is the same fiction the RETURN · HUB row was removed from
  // Home for, and it survived on the progress rail.
  group("the progress rail speaks each line's own language", () {
    Future<String> subtitle(WidgetTester tester) async {
      tester.view.physicalSize = const Size(1080, 1200);
      tester.view.devicePixelRatio = 3.0;
      addTearDown(tester.view.resetPhysicalSize);
      addTearDown(tester.view.resetDevicePixelRatio);

      await tester.pumpWidget(
        ScreenUtilInit(
          designSize: const Size(390, 844),
          builder: (_, _) => MaterialApp(
            home: Scaffold(
              body: TripProgressRail(
                progress: const [
                  StopProgress.done,
                  StopProgress.current,
                  StopProgress.pending,
                ],
                slotLabel: 'Trip 1',
                remaining: const Duration(minutes: 25),
              ),
            ),
          ),
        ),
      );
      await tester.pumpAndSettle();

      return tester
          .widgetList<Text>(find.byType(Text))
          .map((t) => t.data ?? '')
          .firstWhere((d) => d.contains('left'), orElse: () => '');
    }

    testWidgets('a meal round just ends', (tester) async {
      ServiceProfile.setActive(ServiceProfile.meals);
      final line = await subtitle(tester);
      expect(line, contains('left'));
      expect(
        line,
        isNot(contains('hub')),
        reason: 'he goes home from the last door, not to a warehouse',
      );
    });

    testWidgets('a parcel day is a loop, and says so', (tester) async {
      ServiceProfile.setActive(ServiceProfile.parcel);
      final line = await subtitle(tester);
      expect(line, contains('then hub'));
    });
  });
}