package org.pihole.dnsproxy;

import android.os.ParcelFileDescriptor;

import android.util.Log;

public class DNSProxyConnection {

    public static String THREAD_NAME = "org.pihole.dnsproxy.service.dnsproxy.thread";

    private DNSProxyService service;
    private Thread thread;
    private ParcelFileDescriptor networkInterface;

    public DNSProxyConnection(DNSProxyService service) {
        this.service = service;
    }

    /**
     * Setup and start the connection
     */
    public void start() {
        DNSProxyRunner runner = new DNSProxyRunner(this.service);
        runner.setOnEstablishListener(tunInterface -> {
            this.networkInterface = tunInterface;
        });

        this.thread = new Thread(runner, DNSProxyConnection.THREAD_NAME);
        this.thread.start();
    }

    /**
     * Stop and close the connection
     */
    public void stop() {
        try {
            this.thread.interrupt();
            this.networkInterface.close();
        } catch (Exception exception) {
            Log.e(DNSProxyService.LOG_TAG, "Closing VPN interface", exception);
        }
    }
}