//
//  GPSSignalHelper.swift
//  QuickLocation
//
//  Created by 八条 on 2026/6/18.
//

import CoreLocation

/// GPS 信号强度（4 格）
enum GPSSignalStrength: Int {
    case none = 0
    case weak = 1
    case fair = 2
    case good = 3
    case excellent = 4

    var barCount: Int { rawValue }
}

/// 根据 CLLocation 的 horizontalAccuracy 估算 GPS 信号强度
func gpsSignalStrength(from location: CLLocation?) -> GPSSignalStrength {
    guard let loc = location else { return .none }
    let acc = loc.horizontalAccuracy
    guard acc > 0 else { return .none }
    switch acc {
    case ..<10:   return .excellent  // GPS 锁定强
    case ..<30:   return .good       // GPS 良好
    case ..<100:  return .fair       // 一般
    default:      return .weak       // 基站/WiFi
    }
}