import 'package:flutter_test/flutter_test.dart';

import 'package:miler/data/milk_run.dart';
import 'package:miler/data/pickup_locations.dart';

/// ─────────────────────────────────────────────────────────────────────────
/// THE PICKUP IS NAMED BY THE TENANT'S LOCATION LIST
///
/// The route card's heading — the biggest type on Home — read `Sudharsan`,
/// a contact person, above a distance and an ETA to a place that name does not
/// identify. It came from the booking row's `sourcename`, which the backend
/// fills from `providercompany` / `providerlocation`.
///
/// The app cannot tell a person from a shop by looking at the string, so the
/// name is **joined** instead: the booking carries the location id, and
/// `GET /admin/tenants/:id/locations` carries the names.
///
/// The half that matters most is the fallback. That route is under `/admin`,
/// and whether a rider's token is admitted to it is the backend's call — so
/// every one of these proves the app is no worse off than before when the
/// table is empty.
/// ─────────────────────────────────────────────────────────────────────────
void main() {
  setUp(PickupLocations.reset);
  tearDown(PickupLocations.reset);

  Map<String, dynamic> stop({
    Object? locationId,
    String sourceName = '',
  }) => {
    'orderid': 'A1',
    if (locationId != null) 'pickuplocationid': locationId,
    'sourcename': sourceName,
  };

  group('with the tenant list loaded', () {
    test('the location name replaces the person on the row', () {
      PickupLocations.seed({'7': 'Sri Balaji Stores'});
      expect(
        MilkRun.sourceNameOf(stop(locationId: 7, sourceName: 'Sudharsan')),
        'Sri Balaji Stores',
      );
    });

    test('it also fills a row that names nothing at all', () {
      PickupLocations.seed({'7': 'Gandhipuram Counter'});
      expect(
        MilkRun.sourceNameOf(stop(locationId: 7)),
        'Gandhipuram Counter',
      );
    });

    test('`sourceid` and `kitchenid` join on the same table', () {
      PickupLocations.seed({'9': 'Peelamedu Kitchen'});
      expect(
        MilkRun.sourceNameOf({'orderid': 'A1', 'sourceid': 9}),
        'Peelamedu Kitchen',
      );
      expect(
        MilkRun.sourceNameOf({'orderid': 'A1', 'kitchenid': '9'}),
        'Peelamedu Kitchen',
      );
    });

    test('an id the tenant list does not hold falls back to the row', () {
      PickupLocations.seed({'7': 'Sri Balaji Stores'});
      expect(
        MilkRun.sourceNameOf(stop(locationId: 99, sourceName: 'Sudharsan')),
        'Sudharsan',
        reason: 'a partial table must not blank out the names it does have',
      );
    });
  });

  group('with no tenant list — the admin route refused, or has not answered', () {
    test('the row is read exactly as it was before', () {
      expect(
        MilkRun.sourceNameOf(stop(locationId: 7, sourceName: 'Sudharsan')),
        'Sudharsan',
      );
      expect(MilkRun.sourceNameOf(stop(locationId: 7)), '');
    });

    test('and grouping still works off the id', () {
      // The group key was never the name — it is the counter's id — so a
      // missing table cannot merge two kitchens into one card.
      final a = stop(locationId: 7);
      final b = stop(locationId: 8);
      expect(MilkRun.sameSource(a, a), isTrue);
      expect(MilkRun.sameSource(a, b), isFalse);
    });
  });

  group('the lookup itself', () {
    test('an absent, empty or zero id is never a name', () {
      PickupLocations.seed({'7': 'Sri Balaji Stores', '0': 'Nowhere'});
      expect(PickupLocations.nameFor(null), '');
      expect(PickupLocations.nameFor(''), '');
      expect(PickupLocations.nameFor('   '), '');
      expect(
        PickupLocations.nameFor(0),
        '',
        reason: '0 is how this backend spells "unset", not a location',
      );
      expect(PickupLocations.nameFor(7), 'Sri Balaji Stores');
      expect(PickupLocations.nameFor('7'), 'Sri Balaji Stores');
    });

    test('reset empties it, so a sign-out cannot leak names across riders', () {
      PickupLocations.seed({'7': 'Sri Balaji Stores'});
      expect(PickupLocations.isLoaded, isTrue);
      PickupLocations.reset();
      expect(PickupLocations.isLoaded, isFalse);
      expect(PickupLocations.nameFor(7), '');
    });
  });
}