import 'package:firebase_messaging/firebase_messaging.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:marianum_mobile/api/marianumconnect/queries/telemetry_heartbeat/telemetry_heartbeat.dart';
import 'package:marianum_mobile/push/push_registration.dart';

void main() {
  group('PushRegistration.isPermissionUsable', () {
    test('explicit denial blocks registration', () {
      for (final status in [
        AuthorizationStatus.denied,
        AuthorizationStatus.deniedPermanently,
      ]) {
        expect(
          PushRegistration.isPermissionUsable(status),
          isFalse,
          reason: '$status should block registration',
        );
      }
    });

    test('all other statuses allow registration', () {
      const usable = [
        AuthorizationStatus.authorized,
        AuthorizationStatus.provisional,
        AuthorizationStatus.notDetermined,
      ];
      for (final status in usable) {
        expect(
          PushRegistration.isPermissionUsable(status),
          isTrue,
          reason: '$status should be usable',
        );
      }
    });

    test('covers every AuthorizationStatus value', () {
      // Guard: if firebase_messaging ever adds a status, revisit the gate.
      expect(AuthorizationStatus.values, hasLength(5));
    });
  });

  group('PushRegistration.canDisplay', () {
    test('only authorized and provisional show notifications', () {
      expect(
        AuthorizationStatus.values.where(PushRegistration.canDisplay),
        unorderedEquals([
          AuthorizationStatus.authorized,
          AuthorizationStatus.provisional,
        ]),
      );
    });
  });

  group('osPermissionWireValue', () {
    test('maps every status', () {
      expect(osPermissionWireValue(AuthorizationStatus.authorized), 'granted');
      expect(
        osPermissionWireValue(AuthorizationStatus.provisional),
        'provisional',
      );
      expect(osPermissionWireValue(AuthorizationStatus.denied), 'denied');
      expect(
        osPermissionWireValue(AuthorizationStatus.deniedPermanently),
        'denied',
      );
      expect(
        osPermissionWireValue(AuthorizationStatus.notDetermined),
        'notDetermined',
      );
      expect(osPermissionWireValue(null), isNull);
    });
  });
}