package org.gcube.smartgears.context.application;

import javax.servlet.ServletContext;

import org.gcube.common.events.Hub;
import org.gcube.smartgears.configuration.application.ApplicationConfiguration;
import org.gcube.smartgears.context.Properties;
import org.gcube.smartgears.context.container.ContainerContext;
import org.gcube.smartgears.lifecycle.application.ApplicationLifecycle;
import org.gcube.smartgears.persistence.PersistenceWriter;
import org.gcube.smartgears.security.AuthorizationProvider;

/**
 * Default {@link ApplicationContext} implementation.
 * 
 * @author Fabio Simeoni
 *
 */
public class DefaultApplicationContext implements ApplicationContext {

	private final ContainerContext container; 
	private final ServletContext sctx; 
	private final ApplicationConfiguration configuration;
	private final ApplicationLifecycle lifecycle;
	private final Properties properties;
	private final Hub hub;
	private final String id;
	
	/**
	 * Crates an intance with mandatory parameters
	 * @param container the container context
	 * @param sctx the servlet context
	 * @param configuration the configuration
	 * @param hub the event hub
	 * @param lifecycle the lifecycle
	 * @param properties the properties
	 */
	public DefaultApplicationContext(String id,ContainerContext container,ServletContext sctx,ApplicationConfiguration configuration, Hub hub, ApplicationLifecycle lifecycle, Properties properties) {
		this.id = id;
		this.container=container;
		this.sctx = sctx;
		this.configuration=configuration;
		this.hub=hub;
		this.lifecycle = lifecycle;
		this.properties=properties;
	}

	/**
	 * Creates an instance by copying the configuration of another.
	 * @param context the other instance
	 */
	public DefaultApplicationContext(ApplicationContext context) {
		this(context.id(), context.container(),context.application(),context.configuration(),context.events(), context.lifecycle(), new Properties(context.properties()));
	}

	@Override
	public ServletContext application() {
		return sctx;
	}

	@Override
	public ContainerContext container() {
		return container;
	}

	@Override
	public String name() { //little shortcut for ease of logging
		return configuration.name();
	}

	@Override
	public ApplicationConfiguration configuration() {
		return configuration;
	}

	@Override
	public ApplicationLifecycle lifecycle() {
		return lifecycle;
	}

	@Override
	public Hub events() {
		return hub;
	}

	@Override
	public PersistenceWriter persistence() {
		return configuration.persistence();
	}

	
	
	@Override
	public Properties properties() {
		return properties;
	}

	@Override
	public String id() {
		return id;
	}

	/**
	 * Returns the authorization provider.
	 * @return the AuhtorizationProvider 
	 **/
	public AuthorizationProvider authorizationProvider() {
		return container().authorizationProvider();
	}	
	
}