import 'package:flutter_test/flutter_test.dart';
import 'package:shared_preferences/shared_preferences.dart';

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

/// ─────────────────────────────────────────────────────────────────────────
/// WHAT `tenantname` ON THE LOGIN IS WORTH
///
/// The backend gates `MILER_COLLECTED_STATE_ENABLED` on every hyperlocal rider
/// having a **Start delivery** button, because with the flag on a parcel with
/// nobody to release it sits at `Collected_By_Miler` forever.
///
/// That button is not a build flag. It is [ServiceProfile.deliversToCustomer],
/// resolved per-login from the rider's tenant — so the question is not *which
/// build is installed* but *does this rider resolve to the milk-run profile*.
///
/// ── Two ways to answer, and only one of them scales ──
///
/// ```
///   by id     a hardcoded set, {13} today. A client whose id we were never
///             told falls through to logistics and gets no button.
///   by name   matched against `tenantname`, checked FIRST. `dailygrubs` is
///             already on the list, so the client resolves with no release.
/// ```
///
/// `tenantname` is not deployed yet, which is the whole of the risk: every
/// hyperlocal tenant that is not id 13 is currently a strand waiting for the
/// flag to be turned on. These pin both halves — that the name is sufficient
/// on its own, and what happens without it.
/// ─────────────────────────────────────────────────────────────────────────
void main() {
  TestWidgetsFlutterBinding.ensureInitialized();
  tearDown(() => ServiceProfile.setActive(ServiceProfile.parcel));

  test(
    'the name alone puts a DailyGrubs rider on the milk-run profile',
    () async {
      // Deliberately no tenant id: this is a client whose id this app has never
      // been told, which is exactly the case the id set cannot cover.
      SharedPreferences.setMockInitialValues({
        TenantController.kTenantName: 'DailyGrubs',
      });

      final profile = await resolveServiceProfile();
      expect(profile, ServiceProfile.milkMan);
      expect(
        profile.deliversToCustomer,
        isTrue,
        reason: 'this is the flag that renders Start delivery',
      );
    },
  );

  test('case and spacing do not decide a rider\'s day', () async {
    for (final spelling in const [
      'dailygrubs',
      'DAILYGRUBS',
      '  DailyGrubs ',
      // How a human actually types a client name into a tenant record. Each of
      // these used to miss, and a miss is a rider with no Start delivery button
      // and a parcel stranded at `Collected_By_Miler`.
      'Daily Grubs',
      'daily-grubs',
      'DAILY_GRUBS',
    ]) {
      SharedPreferences.setMockInitialValues({
        TenantController.kTenantName: spelling,
      });
      expect(
        await resolveServiceProfile(),
        ServiceProfile.milkMan,
        reason: '"$spelling" did not resolve',
      );
    }
  });

  test('without it, an unrecognised tenant falls back to logistics', () async {
    // The strand: flag on, newest build installed, no button to press, and the
    // parcel stays at `Collected_By_Miler` because nothing can release it.
    SharedPreferences.setMockInitialValues({TenantController.kTenantId: 17});

    final profile = await resolveServiceProfile();
    expect(profile, ServiceProfile.parcel);
    expect(profile.deliversToCustomer, isFalse);
  });

  test('the name decides when the id says nothing', () async {
    // Belt and braces: a hyperlocal client sitting on an id this app has not
    // been told about must still resolve from its name.
    //
    // Note 17 is *unlisted*, not contradictory — an id this build knows wins,
    // see `tenant_mode_test.dart`. This is the fall-through, which is the whole
    // reason a new client needs no release.
    SharedPreferences.setMockInitialValues({
      TenantController.kTenantName: 'DailyGrubs',
      TenantController.kTenantId: 17,
    });

    expect(await resolveServiceProfile(), ServiceProfile.milkMan);
  });
}