import 'package:flutter/material.dart';
import 'package:get/get.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';
import '../../../data/services/ble_manager.dart';

/// 设备检查服务
/// 负责检查设备状态，如电量检查等
class DeviceChecker {
  final BleManager _bleManager = Get.find<BleManager>();

  /// 检查设备电量是否满足升级条件
  /// 返回true表示电量充足，可以进行升级
  /// 返回false表示电量不足，不能进行升级
  bool checkBatteryLevel() {
    try {
      final deviceInfo = _bleManager.deviceInfo.value;

      if (deviceInfo == null) {
        _showBatteryCheckFailedSnackbar('无法获取设备信息，请检查设备连接');
        return false;
      }

      final leftBattery = deviceInfo.leftEarBattery;
      final rightBattery = deviceInfo.rightEarBattery;

      // 检查左右耳电量是否都大于30%
      if (leftBattery <= 30 || rightBattery <= 30) {
        _showLowBatteryDialog(leftBattery, rightBattery);
        return false;
      }

      return true;
    } catch (e) {
      _showBatteryCheckFailedSnackbar('检查设备电量时发生错误：$e');
      return false;
    }
  }

  /// 显示电量不足对话框
  /// [leftBattery] 左耳电量
  /// [rightBattery] 右耳电量
  void _showLowBatteryDialog(int leftBattery, int rightBattery) {
    String message = '设备电量不足，无法进行固件升级\n';
    message += '升级要求：左右耳电量均需大于30%\n';
    message += '当前电量：左耳 ${leftBattery}%，右耳 ${rightBattery}%\n';
    message += '请充电后再试';

    Get.dialog(
      AlertDialog(
        title: Text(
          '电量不足',
          style: TextStyle(
            color: Colors.orange[700],
            fontWeight: FontWeight.w600,
          ),
        ),
        content: Text(
          message,
          style: TextStyle(
            color: Colors.orange[600],
          ),
        ),
        actions: [
          TextButton(
            onPressed: () => Get.back(),
            style: TextButton.styleFrom(
              foregroundColor: Colors.orange[700],
            ),
            child: const Text('确定'),
          ),
        ],
        shape: RoundedRectangleBorder(
          borderRadius: BorderRadius.circular(12),
          side: BorderSide(
            color: Colors.orange.withValues(alpha: 0.3),
            width: 1,
          ),
        ),
        backgroundColor: Colors.orange[50],
      ),
    );
  }

  /// 显示电量检查失败提示
  /// [message] 错误信息
  void _showBatteryCheckFailedSnackbar(String message) {
    Get.snackbar(
      '电量检查失败',
      message,
      snackPosition: SnackPosition.BOTTOM,
      backgroundColor: Colors.orange[600],
      colorText: Colors.white,
      icon: const Icon(
        Icons.warning_amber,
        color: Colors.white,
      ),
    );
  }
}