import 'package:flutter_test/flutter_test.dart';

import 'package:miler/Models/stop_status.dart';
import 'package:miler/data/service_profile.dart';

/// Which of the three tabs a stop belongs on, at each rung of the ladder.
///
/// Home = decide and go · Deliveries = the work in hand · Activity = history.
/// The pages all read the same two predicates, so this is the whole contract.
String pageFor(StopStatus s) {
  if (s.isWorkComplete || s.isSkipped) return 'Activity';
  if (s.isPending) return 'Home';
  return 'Deliveries';
}

void main() {
  endOfDay();
  tearDown(() => ServiceProfile.setActive(ServiceProfile.parcel));

  group('milk man — collect at a kitchen, then a round of drops', () {
    setUp(() => ServiceProfile.setActive(ServiceProfile.milkMan));

    test('picked up moves it off Home and onto Deliveries', () {
      expect(pageFor(StopStatus.assigned), 'Home');
      expect(pageFor(StopStatus.accepted), 'Deliveries');
      expect(pageFor(StopStatus.picked), 'Deliveries');
      expect(pageFor(StopStatus.outForDelivery), 'Deliveries');
      expect(pageFor(StopStatus.deliveryArrived), 'Deliveries');
    });

    test('delivered moves it to Activity', () {
      expect(pageFor(StopStatus.delivered), 'Activity');
      expect(pageFor(StopStatus.skipped), 'Activity');
    });
  });

  group('logistics — first mile, and the hub delivers it', () {
    setUp(() => ServiceProfile.setActive(ServiceProfile.parcel));

    // ── This is the line that does not match the request ──
    //
    // A logistics rider collects at the customer's door and carries the
    // shipment to the hub; somebody else delivers it, on another day, and this
    // app never sees that. So `picked` IS the end of his work, and there is no
    // `delivered` event for him to reach.
    //
    // Making `picked` land on Deliveries instead would need a rung that does
    // not exist yet — a hand-over-at-hub step — or every collected parcel would
    // sit on that tab forever and never reach Activity.
    test('picked up is the end of the rider work, so it files to Activity', () {
      expect(pageFor(StopStatus.assigned), 'Home');
      expect(pageFor(StopStatus.accepted), 'Deliveries');
      expect(pageFor(StopStatus.arrived), 'Deliveries');
      expect(pageFor(StopStatus.picked), 'Activity');
    });

    test('the profile says so explicitly', () {
      expect(ServiceProfile.active.deliversToCustomer, isFalse);
      expect(ServiceProfile.milkMan.deliversToCustomer, isTrue);
    });
  });
}

/// ─────────────────────────────────────────────────────────────────────────
/// WHERE THE DAY ENDS
///
/// A logistics rider collects at customers' doors and carries the shipments to
/// the hub, so his last leg is a building. A milk-man round is the other way
/// up: he loads at the kitchen and his last address is a customer's door, so
/// there is nothing to return and nowhere to return it to.
///
/// The screens read [ServiceProfile.endsAtHub], never the line.
/// ─────────────────────────────────────────────────────────────────────────
void endOfDay() {
  group('end of day', () {
    test('a milk run finishes where it stands', () {
      expect(ServiceProfile.milkMan.endsAtHub, isFalse);
      expect(ServiceProfile.milkMan.deliversToCustomer, isTrue);
    });

    test('a parcel route goes back to the depot', () {
      expect(ServiceProfile.parcel.endsAtHub, isTrue);
      expect(ServiceProfile.parcel.deliversToCustomer, isFalse);
    });

    test('the two are one fact, not two flags that can disagree', () {
      for (final p in [
        ServiceProfile.parcel,
        ServiceProfile.milkMan,
        ServiceProfile.delivery,
      ]) {
        expect(p.endsAtHub, isNot(p.deliversToCustomer));
      }
    });
  });
}