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/trip.dart';
import 'package:miler/views/Dashboard/home/trip_card.dart';

/// ─────────────────────────────────────────────────────────────────────────
/// A STOP HE IS STANDING AT MUST NOT LEAVE THE SCREEN
///
/// Reported from a live run: the rider marked **Arrived**, the console updated
/// correctly — and the stop vanished off Home. Deliveries did not have it
/// either, and could not: arrival is a *pre-pickup* rung, and the delivery tab
/// only takes work once it is collected. The stop existed in neither place.
///
/// ── What caused it ──
///
/// Nothing on the backend. [StopState.arrived] and [StopState.active] used to
/// be one value, and `TripCard._showsOnHome` — like a dozen other sites — asked
/// `state == StopState.active` to mean *is he at the counter*. Splitting the
/// two apart so the row could say **Arrived** instead of **Active** left every
/// one of those comparisons answering `false` for the new rung.
///
/// The visibility filter was the one the rider could see. The others were just
/// as broken and quieter: the selection bar offered *Accept* for a stop he was
/// already at, the card stopped building its **Mark as picked** button, and the
/// group he was working no longer opened by default.
///
/// These pin the rung end to end — the predicate that now answers the question
/// once ([StopStateX.isAtSource]), and the screen behaviour that regressed.
/// ─────────────────────────────────────────────────────────────────────────
void main() {
  tearDown(() => ServiceProfile.setActive(ServiceProfile.parcel));

  Map<String, dynamic> meal(String id, String who, {String? status}) => {
    'orderid': id,
    'type': 'delivery',
    'step': int.parse(id),
    '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',
    if (status != null) 'orderstatus': status,
  };

  Future<void> pumpHome(
    WidgetTester tester,
    List<Map<String, dynamic>> stops,
  ) async {
    ServiceProfile.setActive(ServiceProfile.milkMan);
    tester.view.physicalSize = const Size(390 * 3, 2600 * 3);
    tester.view.devicePixelRatio = 3.0;
    addTearDown(tester.view.reset);

    await tester.pumpWidget(
      ScreenUtilInit(
        designSize: const Size(390, 844),
        builder: (_, _) => MaterialApp(
          home: Scaffold(
            body: SingleChildScrollView(
              child: TripCard(
                trip: Trip.fromStops(id: 'run', stops: stops),
                acceptedIds: const {},
                selectedIds: const {},
                onToggleSelect: (_) {},
                onSelectAll: (_) {},
                onStopTap: (_) {},
                onCallStop: (_) {},
              ),
            ),
          ),
        ),
      ),
    );
    // Not `pumpAndSettle`: an arrived row is a **live** row, and [LiveMark]
    // pulses for as long as it is on screen — settling waits for an animation
    // that is never going to stop. Two pumps lay the frame out and let the
    // pulse start, which is all these assertions need.
    await tester.pump();
    await tester.pump(const Duration(milliseconds: 300));
  }

  group('1 · the predicate that answers it once', () {
    test('arrived and active both mean "he is at the source"', () {
      expect(StopState.arrived.isAtSource, isTrue);
      expect(StopState.active.isAtSource, isTrue);
    });

    test('and nothing else does', () {
      for (final other in const [
        StopState.pending,
        StopState.accepted,
        StopState.collected,
        StopState.done,
        StopState.skipped,
        StopState.rejected,
      ]) {
        expect(
          other.isAtSource,
          isFalse,
          reason: '$other must not read as standing at the counter',
        );
      }
    });

    test('an arrived stop is committed work, not an open offer', () {
      // It rode in on `active` and was dropped by the same split. A rider who
      // has reported an arrival has plainly committed to the stop.
      expect(StopState.arrived.isCommitted, isTrue);
      expect(StopState.pending.isCommitted, isFalse);
    });
  });

  group('2 · the screen behaviour that regressed', () {
    testWidgets('an arrived stop stays on Home', (tester) async {
      await pumpHome(tester, [
        meal('1', 'Joe Mathew', status: 'arrived'),
        meal('2', 'Arun Prakash'),
      ]);

      expect(
        find.text('Joe Mathew'),
        findsOneWidget,
        reason:
            'the rider is standing at this counter — it cannot leave Home, '
            'and Deliveries will not take it until it is collected',
      );
    });

    testWidgets('it is still there beside an untouched stop', (tester) async {
      // Guards the opposite overcorrection: making arrived visible must not
      // have cost the ordinary rows their place in the run.
      await pumpHome(tester, [
        meal('1', 'Joe Mathew', status: 'arrived'),
        meal('2', 'Arun Prakash'),
      ]);

      expect(find.text('Joe Mathew'), findsOneWidget);
      expect(find.text('Arun Prakash'), findsOneWidget);
    });

    testWidgets('a collected stop still leaves — that one is not a bug', (
      tester,
    ) async {
      // The filter's real job, asserted so a fix for the disappearance cannot
      // quietly turn into "nothing ever leaves Home".
      await pumpHome(tester, [
        meal('1', 'Joe Mathew', status: 'picked'),
        meal('2', 'Arun Prakash'),
      ]);

      expect(find.text('Joe Mathew'), findsNothing);
      expect(find.text('Arun Prakash'), findsOneWidget);
    });
  });
}