package o2mc.io.dimmldependency.Datastreams;

import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.telephony.TelephonyManager;

import java.net.InetAddress;
import java.net.InterfaceAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.util.Enumeration;

/**
 * Created by nickyromeijn on 16/02/16.
 * Class pulled from Github. (With some small changes)
 * It returns the current networkstate as a String
 */
public class Connectivity {

    /**
     * Get the network info
     * @param context
     * @return
     */
    public static NetworkInfo getNetworkInfo(Context context){
        ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        return cm.getActiveNetworkInfo();
    }

    /**
     * Check if there is any connectivity
     * @param context
     * @return
     */
    public static boolean isConnected(Context context){
        NetworkInfo info = Connectivity.getNetworkInfo(context);
        return (info != null && info.isConnected());
    }

    /**
     * Check if there is any connectivity to a Wifi network
     * @param context
     * @param type
     * @return
     */
    public static boolean isConnectedWifi(Context context){
        NetworkInfo info = Connectivity.getNetworkInfo(context);
        return (info != null && info.isConnected() && info.getType() == ConnectivityManager.TYPE_WIFI);
    }

    /**
     * Check if there is any connectivity to a mobile network
     * @param context
     * @param type
     * @return
     */
    public static boolean isConnectedMobile(Context context){
        NetworkInfo info = Connectivity.getNetworkInfo(context);
        return (info != null && info.isConnected() && info.getType() == ConnectivityManager.TYPE_MOBILE);
    }

    /**
     * Check if there is fast connectivity
     * @param context
     * @return
     */
    public static boolean isConnectedFast(Context context){
        NetworkInfo info = Connectivity.getNetworkInfo(context);
        return (info != null && info.isConnected() && Connectivity.isConnectionFast(info.getType(),info.getSubtype()));
    }

    static InetAddress ip() throws SocketException {
        Enumeration<NetworkInterface> nis = NetworkInterface.getNetworkInterfaces();
        NetworkInterface ni;
        while (nis.hasMoreElements()) {
            ni = nis.nextElement();
            if (!ni.isLoopback()/*not loopback*/ && ni.isUp()/*it works now*/) {
                for (InterfaceAddress ia : ni.getInterfaceAddresses()) {
                    //filter for ipv4/ipv6
                    if (ia.getAddress().getAddress().length == 4) {
                        //4 for ipv4, 16 for ipv6
                        return ia.getAddress();
                    }
                }
            }
        }
        return null;
    }

    public static String getConnectivityType(Context context){

        NetworkInfo info = Connectivity.getNetworkInfo(context);
        int type = info.getType();
        int subType = info.getSubtype();

            if(type==ConnectivityManager.TYPE_WIFI){
                return "WIFI";
            } else if(type==ConnectivityManager.TYPE_MOBILE){
                switch(subType){
                    case TelephonyManager.NETWORK_TYPE_1xRTT:
                        return "1xRTT"; // ~ 50-100 kbps
                    case TelephonyManager.NETWORK_TYPE_CDMA:
                        return "CDMA"; // ~ 14-64 kbps
                    case TelephonyManager.NETWORK_TYPE_EDGE:
                        return "EDGE"; // ~ 50-100 kbps
                    case TelephonyManager.NETWORK_TYPE_EVDO_0:
                        return "EVDO_0"; // ~ 400-1000 kbps
                    case TelephonyManager.NETWORK_TYPE_EVDO_A:
                        return "EVDO_A"; // ~ 600-1400 kbps
                    case TelephonyManager.NETWORK_TYPE_GPRS:
                        return "GPRS"; // ~ 100 kbps
                    case TelephonyManager.NETWORK_TYPE_HSDPA:
                        return "HSDPA"; // ~ 2-14 Mbps
                    case TelephonyManager.NETWORK_TYPE_HSPA:
                        return "HSPA"; // ~ 700-1700 kbps
                    case TelephonyManager.NETWORK_TYPE_HSUPA:
                        return "HSUPA"; // ~ 1-23 Mbps
                    case TelephonyManager.NETWORK_TYPE_UMTS:
                        return "UMTS"; // ~ 400-7000 kbps
            /*
             * Above API level 7, make sure to set android:targetSdkVersion
             * to appropriate level to use these
             */
                    case TelephonyManager.NETWORK_TYPE_EHRPD: // API level 11
                        return "EHRPD"; // ~ 1-2 Mbps
                    case TelephonyManager.NETWORK_TYPE_EVDO_B: // API level 9
                        return "EVDO_B"; // ~ 5 Mbps
                    case TelephonyManager.NETWORK_TYPE_HSPAP: // API level 13
                        return "HSPAP"; // ~ 10-20 Mbps
                    case TelephonyManager.NETWORK_TYPE_IDEN: // API level 8
                        return "IDEN"; // ~25 kbps
                    case TelephonyManager.NETWORK_TYPE_LTE: // API level 11
                        return "LTE"; // ~ 10+ Mbps
                    // Unknown
                    case TelephonyManager.NETWORK_TYPE_UNKNOWN:
                    default:
                        return "unknown";
                }
            }else{
                return "unknown";
            }
    }

    /**
     * Check if the connection is fast
     * @param type
     * @param subType
     * @return
     */
    public static boolean isConnectionFast(int type, int subType){
        if(type==ConnectivityManager.TYPE_WIFI){
            return true;
        } else if(type==ConnectivityManager.TYPE_MOBILE){
            switch(subType){
                case TelephonyManager.NETWORK_TYPE_1xRTT:
                    return false; // ~ 50-100 kbps
                case TelephonyManager.NETWORK_TYPE_CDMA:
                    return false; // ~ 14-64 kbps
                case TelephonyManager.NETWORK_TYPE_EDGE:
                    return false; // ~ 50-100 kbps
                case TelephonyManager.NETWORK_TYPE_EVDO_0:
                    return true; // ~ 400-1000 kbps
                case TelephonyManager.NETWORK_TYPE_EVDO_A:
                    return true; // ~ 600-1400 kbps
                case TelephonyManager.NETWORK_TYPE_GPRS:
                    return false; // ~ 100 kbps
                case TelephonyManager.NETWORK_TYPE_HSDPA:
                    return true; // ~ 2-14 Mbps
                case TelephonyManager.NETWORK_TYPE_HSPA:
                    return true; // ~ 700-1700 kbps
                case TelephonyManager.NETWORK_TYPE_HSUPA:
                    return true; // ~ 1-23 Mbps
                case TelephonyManager.NETWORK_TYPE_UMTS:
                    return true; // ~ 400-7000 kbps
            /*
             * Above API level 7, make sure to set android:targetSdkVersion
             * to appropriate level to use these
             */
                case TelephonyManager.NETWORK_TYPE_EHRPD: // API level 11
                    return true; // ~ 1-2 Mbps
                case TelephonyManager.NETWORK_TYPE_EVDO_B: // API level 9
                    return true; // ~ 5 Mbps
                case TelephonyManager.NETWORK_TYPE_HSPAP: // API level 13
                    return true; // ~ 10-20 Mbps
                case TelephonyManager.NETWORK_TYPE_IDEN: // API level 8
                    return false; // ~25 kbps
                case TelephonyManager.NETWORK_TYPE_LTE: // API level 11
                    return true; // ~ 10+ Mbps
                // Unknown
                case TelephonyManager.NETWORK_TYPE_UNKNOWN:
                default:
                    return false;
            }
        }else{
            return false;
        }
    }

}