AFNetworkReachabilityManager_ext.swift

import Alamofire
import CoreTelephony

enum NetworkType {
    case unknown
    case noConnection
    case wifi
    case wwan2g
    case wwan3g
    case wwan4g
    case unknownTechnology(name: String)
    
    var trackingId: String {
        switch self {
        case .unknown:                      return "Unknown"
        case .noConnection:                 return "No Connection"
        case .wifi:                         return "Wifi"
        case .wwan2g:                       return "2G"
        case .wwan3g:                       return "3G"
        case .wwan4g:                       return "4G"
        case .unknownTechnology(let name):  return "Unknown Technology: \"\(name)\""
        }
    }
}

extension NetworkReachabilityManager {
    static func getNetworkType() -> NetworkType {
        guard let reachability = NetworkReachabilityManager() else { return .unknown }
        switch reachability.networkReachabilityStatus {
        case .reachable(let connectionType):
            switch connectionType {
            case .ethernetOrWiFi:
                return .wifi
            case .wwan:
                return getWWANNetworkType()
            }
        case .notReachable:
            return .noConnection
        case .unknown:
            return .unknown
        }
    }
    
    static func getWWANNetworkType() -> NetworkType {
        guard let currentRadioAccessTechnology = CTTelephonyNetworkInfo().currentRadioAccessTechnology else { return .unknown }
        switch currentRadioAccessTechnology {
        case CTRadioAccessTechnologyGPRS,
             CTRadioAccessTechnologyEdge,
             CTRadioAccessTechnologyCDMA1x:
            return .wwan2g
        case CTRadioAccessTechnologyWCDMA,
             CTRadioAccessTechnologyHSDPA,
             CTRadioAccessTechnologyHSUPA,
             CTRadioAccessTechnologyCDMAEVDORev0,
             CTRadioAccessTechnologyCDMAEVDORevA,
             CTRadioAccessTechnologyCDMAEVDORevB,
             CTRadioAccessTechnologyeHRPD:
            return .wwan3g
        case CTRadioAccessTechnologyLTE:
            return .wwan4g
        default:
            return .unknownTechnology(name: currentRadioAccessTechnology)
        }
    }
    
}