package com.rdlze.radializebase.interfaces;

import java.io.Serializable;
import java.rmi.Remote;
import java.rmi.RemoteException;
import java.sql.SQLException;
import java.util.List;

import com.rdlze.radializeutils.objects.Radio;

public interface InterfaceCrawlerMaster extends Remote, Serializable {

	/**
	 * Adds a slave node for the list of available slaves for crawling.
	 * 
	 * @param slave
	 * @throws RemoteException
	 */
	public void addSlave(String slaveIP, String slaveName, int port)
			throws RemoteException;

	/**
	 * Check if metadata has changed for the given radio. If so, new media is
	 * mapped on the master for that radioId.
	 * 
	 * @param radioId
	 * @param media
	 * @return
	 */
	public boolean hasChanged(int radioId, String media) throws RemoteException;

	/**
	 * Adds to the crawling queue radios os the given companies.
	 * 
	 * @param commaSeparatedCompanyIds
	 *            ex: "4,6,61"
	 * @throws SQLException
	 */
	public boolean loadCompaniesRadios(String commaSeparatedCompanyIds)
			throws SQLException, RemoteException;

	/**
	 * Adds to the crawling queue a list of radios
	 * 
	 * @param radios
	 *            list of radios
	 */
	public boolean addRadiosToCrawl(List<Radio> radios) throws RemoteException;

	/**
	 * Only tester if was connected.
	 *  
	 * @throws RemoteException
	 */
	public void connected() throws RemoteException;

	/**
	 * Tells the master a radio's metadata is not able to be crawled by stream
	 * so the master can send it to be collected by metadata pages(traditional crawling).
	 * @param idRadio
	 * @throws RemoteException
	 */
	public void fail2CollectByStream(int idRadio) throws RemoteException;

	/**
	 * Allows the external program to ask for a list of 
	 * radios to be crawled.
	 * @param numRadios is how many radios should be sent on response
	 * @param slaveName to identify which slave is asking and how to populate the response
	 * @throws RemoteException
	 */
	public void getRadios2Crawl(int numRadios, String slaveName) throws RemoteException;
	
}