package de.tudarmstadt.informatik.hostage.protocol;


import android.content.Context;
import android.net.DhcpInfo;
import android.net.wifi.WifiManager;

import org.alfresco.jlan.app.CifsOnlyXMLServerConfiguration;
import org.alfresco.jlan.netbios.server.AddNameListener;
import org.alfresco.jlan.netbios.server.NetBIOSNameEvent;
import org.alfresco.jlan.netbios.server.NetBIOSNameServer;
import org.alfresco.jlan.server.SessionListener;
import org.alfresco.jlan.server.SrvSession;
import org.alfresco.jlan.server.config.InvalidConfigurationException;
import org.alfresco.jlan.server.filesys.FileListener;
import org.alfresco.jlan.server.filesys.FilesystemsConfigSection;
import org.alfresco.jlan.server.filesys.NetworkFile;
import org.alfresco.jlan.smb.server.CIFSConfigSection;
import org.alfresco.jlan.smb.server.SMBServer;

import java.io.IOException;
import java.io.InputStreamReader;
import java.net.InetAddress;
import java.util.List;

import de.tudarmstadt.informatik.hostage.Listener;
import de.tudarmstadt.informatik.hostage.R;
import de.tudarmstadt.informatik.hostage.ui.activity.MainActivity;
import de.tudarmstadt.informatik.hostage.wrapper.Packet;

public class CIFS implements Protocol, SessionListener, FileListener{
    private Listener mHandler;
    private SMBServer mSmbServer;
    private NetBIOSNameServer mNbNameServer;

    public void initialize(Listener mHandler) {
        this.mHandler = mHandler;

        CifsOnlyXMLServerConfiguration smbConfig = new CifsOnlyXMLServerConfiguration();

        try {
            smbConfig.loadConfiguration(new InputStreamReader(MainActivity.context.getResources().openRawResource(R.raw.jlan_config)));
            CIFSConfigSection cifsConfig = (CIFSConfigSection) smbConfig.getConfigSection(CIFSConfigSection.SectionName);
            cifsConfig.setBroadcastMask(getBroadcastAddress());
            cifsConfig.setSessionPort(28276);
            cifsConfig.setTcpipSMBPort(28582);
            cifsConfig.setDatagramPort(28274);
            cifsConfig.setHostAnnouncerPort(28275);
            cifsConfig.setNetBIOSSMB(true);
            cifsConfig.setDisableNIOCode(true);

            this.mSmbServer = new SMBServer(smbConfig);
            this.mNbNameServer = new NetBIOSNameServer(smbConfig);
            this.mSmbServer.addSessionListener(this);
            this.mSmbServer.addFileListener(this);

            this.mNbNameServer.startServer();
            this.mSmbServer.startServer();
        } catch (IOException e) {
            e.printStackTrace();
        } catch (InvalidConfigurationException e) {
            e.printStackTrace();
        }
    }

    @Override
    public int getPort() {
        return 1025;
    }

    @Override
    public boolean isClosed() {
        return false;
    }

    @Override
    public boolean isSecure() {
        return false;
    }

    @Override
    public List<Packet> processMessage(Packet message) {
        return null;
    }

    @Override
    public TALK_FIRST whoTalksFirst() {
        return null;
    }

    public String toString(){
        return "CIFS";
    }

    @Override
    public void sessionClosed(SrvSession srvSession) {
        System.out.println("---------------------- [CIFS] Session closed!");
    }

    @Override
    public void sessionCreated(SrvSession srvSession) {
        System.out.println("---------------------- [CIFS] Session created!");
    }

    @Override
    public void sessionLoggedOn(SrvSession srvSession) {
        System.out.println("---------------------- [CIFS] Session LoggedOn!");
    }

    @Override
    public void fileClosed(SrvSession srvSession, NetworkFile networkFile) {
        System.out.println("---------------------- [CIFS] File closed!");
    }

    @Override
    public void fileOpened(SrvSession srvSession, NetworkFile networkFile) {
        System.out.println("---------------------- [CIFS] File closed!");
    }

    private String getBroadcastAddress() throws IOException {
        WifiManager wifi = (WifiManager) MainActivity.context.getSystemService(Context.WIFI_SERVICE);
        DhcpInfo dhcp = wifi.getDhcpInfo();
        // handle null somehow

        int broadcast = (dhcp.ipAddress & dhcp.netmask) | ~dhcp.netmask;
        byte[] quads = new byte[4];
        for (int k = 0; k < 4; k++)
            quads[k] = (byte) (broadcast >> (k * 8));
        return InetAddress.getByAddress(quads).toString().substring(1);
    }

}