package org.gcube.gcat.configuration;

import java.util.HashMap;
import java.util.Map;

import org.gcube.common.authorization.utils.manager.SecretManagerProvider;
import org.gcube.gcat.persistence.ckan.CKANUserCache;

/**
 * @author Luca Frosini (ISTI - CNR)
 */
public class CatalogueConfigurationFactory {
	
	private static final Map<String, ServiceCatalogueConfiguration> catalogueConfigurations;
	
	static {
		catalogueConfigurations = new HashMap<>();
	}
	
	protected static ServiceCatalogueConfiguration load(String context) {
		GCoreISConfigurationProxy gCoreISConfigurationProxy = new GCoreISConfigurationProxy(context);
		return gCoreISConfigurationProxy.getCatalogueConfiguration();
	}
	
	public synchronized static ServiceCatalogueConfiguration getInstance() {
		String context = SecretManagerProvider.instance.get().getContext();
		ServiceCatalogueConfiguration catalogueConfiguration = catalogueConfigurations.get(context);
		if(catalogueConfiguration == null) {
			catalogueConfiguration = load(context);
			catalogueConfigurations.put(context, catalogueConfiguration);
		}
		return catalogueConfiguration;
	}
	
	public synchronized static void renew() {
		String context = SecretManagerProvider.instance.get().getContext();
		catalogueConfigurations.remove(context);
		ServiceCatalogueConfiguration catalogueConfiguration = load(context);
		catalogueConfigurations.put(context, catalogueConfiguration);
	}
	
	public synchronized static void purge() {
		// Remove the resource from IS
		String context = SecretManagerProvider.instance.get().getContext();
		catalogueConfigurations.remove(context);
		GCoreISConfigurationProxy gCoreISConfigurationProxy = new GCoreISConfigurationProxy(context);
		gCoreISConfigurationProxy.delete();
	}
	
	public synchronized static ServiceCatalogueConfiguration createOrUpdate(ServiceCatalogueConfiguration catalogueConfiguration) throws Exception {
		String context = SecretManagerProvider.instance.get().getContext();
		catalogueConfigurations.remove(context);
		GCoreISConfigurationProxy gCoreISConfigurationProxy = new GCoreISConfigurationProxy(context, catalogueConfiguration);
		catalogueConfiguration = gCoreISConfigurationProxy.createOrUpdateOnIS();
		catalogueConfigurations.put(context, catalogueConfiguration);
		
		// The supported organizations could be changed we need to empty the user cache for the context
		// to avoid to miss to add an user in an organization which has been added.
		CKANUserCache.emptyUserCache();
		
		return catalogueConfiguration;
	}
	
}