import 'dart:io';
import 'package:flutter/foundation.dart';
import 'package:permission_handler/permission_handler.dart';

class BeaconPermissions {
  static Future<bool> requestPermissions() async {
    try {
      // Request location permission (required for Bluetooth scanning)
      final locationStatus = await Permission.locationWhenInUse.request();
      debugPrint('[BeaconPermissions] Location: $locationStatus');

      bool bluetoothGranted = true;

      if (Platform.isIOS) {
        // iOS uses a single Bluetooth permission
        final bluetoothStatus = await Permission.bluetooth.request();
        debugPrint('[BeaconPermissions] Bluetooth (iOS): $bluetoothStatus');
        bluetoothGranted = bluetoothStatus.isGranted;
      } else {
        // Android 12+ requires separate scan/connect permissions
        final bluetoothScan = await Permission.bluetoothScan.request();
        final bluetoothConnect = await Permission.bluetoothConnect.request();
        debugPrint('[BeaconPermissions] BluetoothScan: $bluetoothScan, BluetoothConnect: $bluetoothConnect');
        bluetoothGranted = bluetoothScan.isGranted && bluetoothConnect.isGranted;
      }

      final allGranted = locationStatus.isGranted && bluetoothGranted;

      if (allGranted) {
        debugPrint('[BeaconPermissions] ✅ All permissions granted');
      } else {
        debugPrint('[BeaconPermissions] ❌ Permissions denied');
      }

      return allGranted;
    } catch (e) {
      debugPrint('[BeaconPermissions] Error requesting permissions: $e');
      return false;
    }
  }

  static Future<bool> checkPermissions() async {
    final locationStatus = await Permission.locationWhenInUse.status;

    bool bluetoothGranted = true;
    if (Platform.isIOS) {
      final bluetoothStatus = await Permission.bluetooth.status;
      bluetoothGranted = bluetoothStatus.isGranted;
    } else {
      final bluetoothScan = await Permission.bluetoothScan.status;
      final bluetoothConnect = await Permission.bluetoothConnect.status;
      bluetoothGranted = bluetoothScan.isGranted && bluetoothConnect.isGranted;
    }

    return locationStatus.isGranted && bluetoothGranted;
  }

  static Future<void> openSettings() async {
    await openAppSettings();
  }
}