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

final calibrationServiceProvider = Provider<CalibrationService>((ref) {
  return CalibrationService();
});

class CalibrationService {
  static const _pitchKey = 'calibration_pitch';
  static const _rollKey = 'calibration_roll';

  Future<void> saveCalibrationOffsets(double pitch, double roll, {int? motorcycleId}) async {
    final prefs = await SharedPreferences.getInstance();
    if (motorcycleId != null) {
      await prefs.setDouble('calibration_pitch_$motorcycleId', pitch);
      await prefs.setDouble('calibration_roll_$motorcycleId', roll);
    }
    // Also save global fallback
    await prefs.setDouble(_pitchKey, pitch);
    await prefs.setDouble(_rollKey, roll);
  }

  Future<Map<String, double>> loadCalibrationOffsets({int? motorcycleId}) async {
    final prefs = await SharedPreferences.getInstance();
    if (motorcycleId != null) {
      final bikePitch = prefs.getDouble('calibration_pitch_$motorcycleId');
      final bikeRoll = prefs.getDouble('calibration_roll_$motorcycleId');
      if (bikePitch != null && bikeRoll != null) {
        return {'pitch': bikePitch, 'roll': bikeRoll};
      }
    }
    final pitch = prefs.getDouble(_pitchKey) ?? 0.0;
    final roll = prefs.getDouble(_rollKey) ?? 0.0;
    return {'pitch': pitch, 'roll': roll};
  }
}