import 'package:cardash_launcher/core/theme/app_theme.dart';
import 'package:cardash_launcher/data/models/bluetooth_device_info.dart';
import 'package:cardash_launcher/data/models/gps_speed.dart';
import 'package:cardash_launcher/data/models/location_reading.dart';
import 'package:cardash_launcher/data/models/obd_state.dart';
import 'package:cardash_launcher/data/services/telemetry_bridge.dart';
import 'package:cardash_launcher/features/home/gps_speed_controller.dart';
import 'package:cardash_launcher/features/home/widgets/gps_speed_card.dart';
import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';

class _GpsPlatform implements TelemetryPlatform {
  _GpsPlatform({this.permission = true, this.speedKmh = 0});

  final bool permission;
  final double speedKmh;
  var started = false;

  @override
  Future<bool> startGpsSpeed() async {
    started = true;
    return permission;
  }

  @override
  Future<void> stopGpsSpeed() async {}

  @override
  Future<GpsSpeed> getGpsSpeed() async {
    if (!permission) return const GpsSpeed();
    return GpsSpeed(
      hasPermission: true,
      hasFix: true,
      speedKmh: speedKmh,
      updatedAt: DateTime(2026).millisecondsSinceEpoch,
    );
  }

  @override
  Future<List<BluetoothDeviceInfo>> listBondedDevices() async => const [];

  @override
  Future<bool> isBluetoothEnabled() async => false;

  @override
  Future<bool> ensureBluetoothPermission() async => false;

  @override
  Future<bool> ensureLocationPermission() async => permission;

  @override
  Future<LocationReading> getLocation() async =>
      const LocationReading(latitude: 0, longitude: 0, place: '');

  @override
  Future<void> connectObd(String address) async {}

  @override
  Future<void> disconnectObd() async {}

  @override
  Future<ObdState> getObdState() async => const ObdState();
}

void main() {
  test('stationary GPS fix reports 0 km/h', () async {
    final platform = _GpsPlatform(speedKmh: 0);
    final controller = GpsSpeedController(
      platform,
      clock: () => DateTime(2026),
    );
    addTearDown(controller.dispose);
    await controller.start();
    expect(platform.started, isTrue);
    expect(controller.speedKmh, 0);
    controller.stop();
  });

  test('no precise location means no prompt and no speed', () async {
    final platform = _GpsPlatform(permission: false);
    final controller = GpsSpeedController(
      platform,
      clock: () => DateTime(2026),
    );
    addTearDown(controller.dispose);
    await controller.start();
    expect(controller.hasPermission, isFalse);
    expect(controller.hasSpeed, isFalse);
    controller.stop();
  });

  testWidgets('GPS card displays 0 km/h', (tester) async {
    await tester.pumpWidget(
      MaterialApp(
        theme: AppTheme.dark(),
        home: const Scaffold(
          body: SizedBox(width: 380, child: GpsSpeedCard(speedKmh: 0)),
        ),
      ),
    );
    expect(find.text('0'), findsOneWidget);
    expect(find.text('km/h'), findsOneWidget);
    expect(find.text('GPS'), findsOneWidget);
  });
}