import 'package:flutter_test/flutter_test.dart';

import 'package:miler/Models/stop_status.dart';
import 'package:miler/data/api_config.dart';
import 'package:miler/data/milk_run.dart';
import 'package:miler/data/service_profile.dart';
import 'package:miler/views/Dashboard/home/trip.dart';

/// ─────────────────────────────────────────────────────────────────────────
/// PICKED IS A RUNG, NOT A MOMENT
///
/// The regression: tapping **Picked** put the stop straight onto the
/// delivery-active rung, so the state the rider had just created was never
/// shown to him.
///
/// The cause was a true fact read as the wrong one. `pickup-complete` releases
/// hyperlocal work itself — pickup and delivery pincodes sharing a 3-digit
/// prefix means the parcel never sees a hub — so the consignment is stamped
/// `Out_for_Delivery` in the same call that records the collection. Every
/// DailyGrubs order is hyperlocal, so the very next poll after a successful
/// Picked reported `Out_for_Delivery`, and the ladder read that as "the rider
/// is riding his round".
///
/// It is not. It says the consignment *may be delivered*. Whether the rider has
/// set off is something only the app knows, and it knows it at the moment he
/// opens the stop.
///
/// These tests hold the two apart. Nothing here asserts on a fabricated status:
/// the backend value under test is the one the contract says `pickup-complete`
/// writes.
/// ─────────────────────────────────────────────────────────────────────────
void main() {
  setUp(() => ServiceProfile.setActive(ServiceProfile.milkMan));
  tearDown(() => ServiceProfile.setActive(ServiceProfile.parcel));

  /// A stop as the queue hands it over, with `orderstatus` already translated
  /// out of the booking enum the way `pickupFromBooking` does it.
  Map<String, dynamic> stop(String backendStatus) => {
    'orderid': '1001',
    'pickupid': 1001,
    'sourcename': 'Vidhya Kitchen',
    'orderstatus': ApiConfig.legacyStatusFromNew(backendStatus),
    'pickuplat': 11.01,
    'pickuplon': 76.95,
    'droplat': 11.05,
    'droplon': 76.99,
  };

  group('the rung after a successful Picked', () {
    test('a released consignment the rider has not started is PICKED', () {
      // The exact state one poll after the slide: booking converted,
      // consignment already out for delivery, rider still at the counter.
      expect(
        MilkRun.stageOf(
          stop('Out_for_Delivery'),
          acceptedIds: {'1001'},
          collectedIds: {'1001'},
          outForDeliveryIds: const {},
        ),
        StopStatus.picked,
        reason:
            'Out_for_Delivery is the consignment being releasable, not the '
            'rider having set off',
      );
    });

    test('Converted_To_Consignment is PICKED too', () {
      // The non-hyperlocal half of the same call. Both endings of
      // `pickup-complete` have to land on the same rung, or the word on the
      // card would depend on the customer's pincode.
      expect(
        MilkRun.stageOf(
          stop('Converted_To_Consignment'),
          acceptedIds: {'1001'},
          collectedIds: {'1001'},
        ),
        StopStatus.picked,
      );
    });

    test('ACTIVE needs the rider to have opened the stop', () {
      expect(
        MilkRun.stageOf(
          stop('Out_for_Delivery'),
          acceptedIds: {'1001'},
          collectedIds: {'1001'},
          outForDeliveryIds: {'1001'},
        ),
        StopStatus.outForDelivery,
      );
    });

    test('the whole ladder still runs in order', () {
      // Pending → Picked → Active → Delivered, end to end, with the backend
      // saying `Out_for_Delivery` from the second rung onward — which is what
      // it really does.
      final s = stop('Pickup_Scheduled');
      expect(
        MilkRun.stageOf(s, acceptedIds: {'1001'}, collectedIds: const {}),
        StopStatus.accepted,
      );

      final picked = stop('Out_for_Delivery');
      expect(
        MilkRun.stageOf(picked, acceptedIds: {'1001'}, collectedIds: {'1001'}),
        StopStatus.picked,
      );
      expect(
        MilkRun.stageOf(
          picked,
          acceptedIds: {'1001'},
          collectedIds: {'1001'},
          outForDeliveryIds: {'1001'},
        ),
        StopStatus.outForDelivery,
      );
      expect(
        MilkRun.stageOf(
          picked,
          acceptedIds: {'1001'},
          collectedIds: {'1001'},
          outForDeliveryIds: {'1001'},
          deliveredIds: {'1001'},
        ),
        StopStatus.delivered,
      );
    });
  });

  group('states the backend genuinely owns still win', () {
    test('a delivered stop is never dragged back to picked', () {
      expect(
        MilkRun.stageOf(
          stop('Delivered'),
          acceptedIds: {'1001'},
          collectedIds: {'1001'},
          outForDeliveryIds: const {},
        ),
        StopStatus.delivered,
      );
    });

    test('an arrival at the door outranks the release', () {
      final s = stop('Out_for_Delivery')..['orderstatus'] = 'deliveryarrived';
      expect(
        MilkRun.stageOf(s, acceptedIds: {'1001'}, collectedIds: {'1001'}),
        StopStatus.deliveryArrived,
      );
    });
  });

  group('after a reload', () {
    test('a released consignment is carried work, never live work', () {
      // The collected set lives in prefs and a reinstall empties it. Before,
      // `outfordelivery` matched nothing in `stopStateOf` and the row fell
      // through to `pending` — putting a bag already in the rider's box back on
      // Home as work to accept.
      final state = stopStateOf(
        stop('Out_for_Delivery'),
        acceptedIds: const {},
        rejectedIds: const {},
        collectedIds: const {},
      );
      expect(state, StopState.collected);
      expect(state, isNot(StopState.active));
      expect(state, isNot(StopState.pending));
    });

    test('a started round survives, because the marker is on the device', () {
      // The rider opened the stop before the app was killed. `startPickup`
      // wrote the id, prefs kept it, and the rung comes back ACTIVE — which is
      // the one case where the UI may say so.
      expect(
        MilkRun.stageOf(
          stop('Out_for_Delivery'),
          acceptedIds: const {},
          collectedIds: const {},
          outForDeliveryIds: {'1001'},
        ),
        StopStatus.outForDelivery,
      );
    });
  });
}