package alice.daemon;

import java.io.FileWriter;
import java.io.IOException;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.ServerSocket;
import java.nio.channels.ServerSocketChannel;

import org.apache.log4j.Logger;
import org.apache.log4j.PatternLayout;
import org.apache.log4j.WriterAppender;

public class AliceDaemon {

    private Config conf;
    private AcceptThread acceptThread;
    private Logger log = Logger.getLogger(AliceDaemon.class);

    public AliceDaemon(Config conf) {
        this.conf = conf;
        setLogger();
    }

    private void setLogger() {
        Logger root = Logger.getRootLogger();
        if (conf.level != null)
            root.setLevel(conf.level);
        if (conf.logFile == null)
            return;
        PatternLayout layout = new PatternLayout();
        layout.setConversionPattern("%d %-5p %c - %m [%t] (%F:%L)%n");
        try {
            FileWriter writer = new FileWriter(conf.logFile);
            WriterAppender writerAppender = new WriterAppender(layout, writer);
            root.removeAllAppenders();
            root.addAppender(writerAppender);
        } catch (IOException e) {
            e.printStackTrace();
        }
        log.info("configured");
    }

    public void listen() {
        try {
            ServerSocketChannel ssChannel = ServerSocketChannel.open();
            ServerSocket ss = ssChannel.socket();
            ss.setReuseAddress(true);

            // listen on any address ipv4/ipv6
            InetSocketAddress a = new InetSocketAddress("::", conf.localPort);

            System.out.println("AliceDaemon.listen: bind to " + a);
            ss.bind(a);
            acceptThread = new AcceptThread(ss, "ACCEPT" + conf.localPort);
            acceptThread.start();
        } catch (IOException e) {
            e.printStackTrace();
        }

    }
}