package com.stoutner.privacybrowser.activities;

import java.io.IOException;
import java.net.DatagramSocket;
import java.net.ServerSocket;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import androidx.appcompat.app.AppCompatActivity;

public class I2PRouter extends AppCompatActivity {
    private static final int MIN_PORT_NUMBER = 0;
    private static final int MAX_PORT_NUMBER = 65535;
    private static final int DEFAULT_PROXY_PORT = 4444;

    private int proxy_port = DEFAULT_PROXY_PORT;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        //setContentView(R.layout.activity_main);
    }

    public void startService(View view) {
        Log.i("main","starting");
        Intent serviceIntent = new Intent(this, I2PTunnelForegroundService.class);
        serviceIntent.putExtra("inputExtra", "Start Foreground Service in Android");
        serviceIntent.setAction("START_FOREGROUND_ACTION");
        startService(serviceIntent);
    }

    public void stopService(View view) {
        Log.i("main","stopping");
        Intent serviceIntent = new Intent(this, I2PTunnelForegroundService.class);
        serviceIntent.putExtra("inputExtra", "Stop Foreground Service in Android");
        serviceIntent.setAction("STOP_FOREGROUND_ACTION");
        startService(serviceIntent);
    }

    public static boolean ProxyIsDown(){
        return ProxyIsDown(DEFAULT_PROXY_PORT);
    }

    /** https://svn.apache.org/viewvc/camel/trunk/components/camel-test/src/main/java/org/apache/camel/test/AvailablePortFinder.java?view=markup#l130
     * Checks to see if a specific port is available.
     *
     * @param port the port to check for availability
     */
    public static boolean ProxyIsDown(int port) {
        if (port < MIN_PORT_NUMBER || port > MAX_PORT_NUMBER) {
            throw new IllegalArgumentException("Invalid start port: " + port);
        }

        ServerSocket ss = null;
        DatagramSocket ds = null;
        try {
            ss = new ServerSocket(port);
            ss.setReuseAddress(true);
            ds = new DatagramSocket(port);
            ds.setReuseAddress(true);
            return true;
        } catch (IOException e) {
        } finally {
            if (ds != null) {
                ds.close();
            }

            if (ss != null) {
                try {
                    ss.close();
                } catch (IOException e) {
                    /* should not be thrown */
                }
            }
        }

        return false;
    }
}