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package com.jpattern.core;

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

import com.jpattern.service.cache.ACacheServiceBuilder;
import com.jpattern.service.cache.ICacheService;
import com.jpattern.service.cache.NullCacheService;
import com.jpattern.service.log.ALoggerServiceBuilder;
import com.jpattern.service.log.ILoggerService;
import com.jpattern.service.log.NullLoggerService;
import com.jpattern.service.log.slf4j.Slf4jLoggerService;
import com.jpattern.service.mail.AMailServiceBuilder;
import com.jpattern.service.mail.IMailService;
import com.jpattern.service.mail.NullMailService;


/**
 * 
 * @author Francesco Cina'
 *
 * 29/gen/2011
 */
public class SystemProvider implements ISystemProvider {

    private Map serviceMap = new HashMap();

    @Override
    public final IService getService(String aServiceName) {
        if (!contains(aServiceName)) {
            return new NullService();
        }
        return getServiceMap().get(aServiceName);
    }

    @Override
	public final ILoggerService getLoggerService() {
		IService service = getService(IServicesName.LOGGER_SERVICE);
		if (service instanceof ILoggerService) {
			return (ILoggerService) service;
		}
		return new Slf4jLoggerService(new NullLoggerService());
	}

	@Override
	public final IMailService getMailService() {
		IService service = getService(IServicesName.MAIL_SENDER_SERVICE);
		if (service instanceof IMailService) {
			return (IMailService) service;
		}
		return new NullMailService();
	}

	@Override
	public final ICacheService getCacheService() {
		IService service = getService(IServicesName.CACHE_SERVICE);
		if (service instanceof ICacheService) {
			return (ICacheService) service;
		}
		return new NullCacheService();
	}
	
    @Override
    public final void buildService(AServiceBuilder aServiceBuilder) {
        serviceMap.put(aServiceBuilder.getName(), aServiceBuilder.build());
    }
    
	@Override
	public final void buildService(IService service) {
		serviceMap.put(service.getName(), service);		
	}
    
	@Override
	public final void buildLoggerService(ALoggerServiceBuilder aLoggerServiceBuilder) {
		buildService(aLoggerServiceBuilder);
	}

	@Override
	public final void buildMailService(AMailServiceBuilder aMailServiceBuilder) {
		buildService(aMailServiceBuilder);
	}
	
    @Override
    public final void remove(String aServiceName) {
    	if (serviceMap.containsKey(aServiceName)){
    		serviceMap.get(aServiceName).stopService();
    		serviceMap.remove(aServiceName);
    	}
    }    
    
    @Override
    public boolean contains(String aServiceName) {
        return serviceMap.containsKey(aServiceName);
    }        

    @Override
    public void removeAllServices() {
    	for (Entry entry : serviceMap.entrySet()) {
    		entry.getValue().stopService();
    	}
        serviceMap.clear();
    }

	@Override
	public Map getServiceMap() {
		return serviceMap;
	}

	@Override
	public void buildCacheService(ACacheServiceBuilder cacheServiceBuilder) {
		buildService(cacheServiceBuilder);		
	}

}