import 'package:flutter_test/flutter_test.dart';

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

/// ─────────────────────────────────────────────────────────────────────────
/// THE BRIEF DESCRIBES WHAT IS LEFT
///
/// Home's brief card carries four figures — duration, distance, parcels,
/// payment — under a headline that counts down (`20 stops left`).
///
/// The headline moved as the rider worked. The figures did not. They were
/// counted once over every stop the slot ever held, so a rider with five
/// collections to go read `≈4h 15m · 29.0 km · 25 parcels`: the morning he
/// started with, including the twenty already in his box and gone to
/// Deliveries. The one question the card exists to answer — *what is in front
/// of me* — was the one thing on it that was stale.
///
/// [Trip.outstanding] is the recount. The line it draws is
/// `WorkBoundary.pickupComplete`, the same boundary Home and Deliveries split
/// on, so a stop cannot be counted here and owned there.
/// ─────────────────────────────────────────────────────────────────────────
void main() {
  tearDown(() => ServiceProfile.setActive(ServiceProfile.parcel));

  Map<String, dynamic> stop(
    String id, {
    String status = 'accepted',
    int parcels = 1,
    double lat = 11.0,
    double lng = 76.95,
    double cash = 0,
  }) => {
    'orderid': id,
    'pickupid': id,
    'orderstatus': status,
    'pickupquantity': parcels,
    'pickuplat': lat,
    'pickuplon': lng,
    'collectionamt': cash,
  };

  group('what the figures count', () {
    test('a collected stop drops out of every figure', () {
      final trip = Trip.fromStops(
        id: 't1',
        stops: [
          stop('A', status: 'picked', lat: 11.00, lng: 76.90),
          stop('B', lat: 11.05, lng: 76.95),
          stop('C', lat: 11.10, lng: 77.00),
        ],
        hubLat: 11.0,
        hubLng: 76.95,
      );

      final left = trip.outstanding(originLat: 11.0, originLng: 76.95);

      expect(trip.stopCount, 3, reason: 'the trip itself is untouched');
      expect(left.stopCount, 2);
      expect(left.totalParcels, lessThan(trip.totalParcels));
      expect(left.totalDuration, lessThan(trip.totalDuration));
      expect(left.routeMeters, lessThan(trip.routeMeters));
    });

    test('the local collected record counts, not just the status', () {
      // The queue is a poll behind, so a stop the rider has just handed over
      // still reports its old status. `collectedIds` is what closes that
      // window — the same set Home writes after pickup-complete returns.
      final trip = Trip.fromStops(
        id: 't1',
        stops: [stop('A'), stop('B')],
      );

      expect(trip.outstanding().stopCount, 2, reason: 'nothing collected yet');
      expect(trip.outstanding(collectedIds: const {'A'}).stopCount, 1);
    });

    test('nothing collected returns the very same object', () {
      // The common case — a rider who has not started — must not pay for a
      // rebuild of the whole trip on every frame of the brief.
      final trip = Trip.fromStops(id: 't1', stops: [stop('A'), stop('B')]);
      expect(identical(trip.outstanding(), trip), isTrue);
    });

    test('skipped and cancelled work is not still-to-do', () {
      final trip = Trip.fromStops(
        id: 't1',
        stops: [
          stop('A', status: 'skipped'),
          stop('B', status: 'cancelled'),
          stop('C'),
        ],
      );
      expect(
        trip.outstanding().stopCount,
        1,
        reason: 'a written-off stop is a record, not a stop to plan around',
      );
    });

    test('a run with everything collected leaves nothing to describe', () {
      final trip = Trip.fromStops(
        id: 't1',
        stops: [
          stop('A', status: 'picked'),
          stop('B', status: 'picked'),
        ],
      );
      final left = trip.outstanding();
      expect(left.stopCount, 0);
      expect(left.totalParcels, 0);
      expect(
        left.totalDuration,
        Duration.zero,
        reason: 'the four cells fall back to the em dash, not to a stale figure',
      );
    });
  });

  group('payment on a meal run', () {
    test('is nothing to collect, whatever the payload says', () {
      ServiceProfile.setActive(ServiceProfile.milkMan);
      final trip = Trip.fromStops(
        id: 't1',
        stops: [stop('A', cash: 250), stop('B', cash: 130)],
      );
      // The cell prints the em dash when this is zero — the rider on a meal
      // run is never asked for money, so a figure here would be a prompt to
      // collect one.
      expect(trip.outstanding().cashToCollect, 0);
    });

    test('but a parcel route still counts the cash it is owed', () {
      ServiceProfile.setActive(ServiceProfile.parcel);
      final trip = Trip.fromStops(
        id: 't1',
        stops: [
          stop('A', status: 'picked', cash: 250),
          stop('B', cash: 130),
        ],
      );
      expect(
        trip.outstanding().cashToCollect,
        130,
        reason: 'the collected stop\'s cash is no longer waiting to be taken',
      );
    });
  });
}