package server;
import java.math.BigInteger;
import java.rmi.*;
import java.rmi.registry.LocateRegistry;
import java.rmi.server.UnicastRemoteObject;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.UUID;
import Models.*;
import sql.SQL;

@SuppressWarnings("serial")
public class ServerMethod extends UnicastRemoteObject implements ServerInterface
{
    protected static String          m_strName;
 

    public ServerMethod() throws RemoteException
    {
        super(); // call base class constructor
    }
    
   
            
    public static void main(String argv[])
    {
        try
        {
        	LocateRegistry.createRegistry(9999);
        	
            m_strName = "TheRMIExample";
            System.out.println("Server: Registering RMIExampleImpl as \"" + m_strName +"\"");
            //System.setSecurityManager(new RMISecurityManager());
            ServerMethod Example = new ServerMethod();
            Naming.rebind("rmi://141.79.128.121:9999/"+m_strName, Example);
            System.out.println("Server: Ready...");
        }
        catch (Exception e)
        {
            System.out.println("Server: Failed to register RMIExampleImpl: " + e);
        }
    }



	@Override
	public User getFtpUser() throws RemoteException {
		User user=new User();
		user.setUsername(UUID.randomUUID().toString().substring(0, 8));
		user.setPass(getEncodedSha1Sum(UUID.randomUUID().toString().substring(0, 8)));
		user.setPath("/srv/openslx/nfs/temp");
		SQL sql=new SQL();
		Connection con=sql.getConnection();
		sql.writeFTPUser(con, user.getUsername(), user.getPass());
		return user;
	}



	@Override
	public int DeleteFtpUser(String user) throws RemoteException {
		SQL sql=new SQL();
		Connection con=sql.getConnection();
		int ret = sql.DeleteUser(con, user);
		return ret;
	}

	public String getEncodedSha1Sum(String key) {
	    try {
	        MessageDigest md = MessageDigest.getInstance( "SHA1" );
	        md.update( key.getBytes() );
	        return new BigInteger(1, md.digest()).toString(16);
	    }
	    catch (NoSuchAlgorithmException e) {
	        // handle error case to taste
	    }
		return null;
	}

	
	
	public ArrayList<String> getImages(){
		
		
		SQL sql=new SQL();
		Connection con=sql.getConnection();
		ResultSet rs= sql.getImage(con);
		ArrayList<String> al=new ArrayList<String>();
		try {
			while(rs.next())
			{
						
				al.add(rs.getString(1));				
				
			}
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return al;
	}
	
	public String getPathOfImage(String name){
		
		String path = null;
		SQL sql=new SQL();
		Connection con=sql.getConnection();
		ResultSet rs= sql.getPathOfImage(con, name);
		
		try {
			while(rs.next())
			{
						
				path=rs.getString(1);				
				
			}
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return path;
	}

}