package at.gv.egovernment.moa.id.auth.modules.eidproxyauth.utils;

import java.util.List;

import org.apache.commons.lang3.StringUtils;

import at.gv.egiz.eaaf.core.api.idp.IConfiguration;
import at.gv.egiz.eaaf.core.api.idp.ISPConfiguration;
import at.gv.egiz.eaaf.core.impl.utils.KeyValueUtils;
import at.gv.egovernment.moa.id.auth.modules.eidproxyauth.EIDProxyAuthConstants;
import at.gv.egovernment.moa.id.commons.api.AuthConfiguration;
import at.gv.egovernment.moa.id.commons.config.MOAIDConfigurationConstants;
import at.gv.egovernment.moa.logging.Logger;

public class Utils {

	public static final String PARAM_APPREG_SP_ID = "?sp=";
	
	public static String getEidSystemApplicationId(ISPConfiguration spConfiguration, String authUrl) {
		StringBuilder builder = new StringBuilder();
		if (authUrl.endsWith("/")) {
			builder.append(authUrl.substring(0, authUrl.length() - 1));
			
		} else {
			builder.append(authUrl);
			
		}		
		builder.append(PARAM_APPREG_SP_ID);
		builder.append(spConfiguration.getUniqueIdentifier());		
		return builder.toString();
		
	}
	
	public static String getEIDSystemEntityId(ISPConfiguration spConfiguration, IConfiguration authConfig) {
		//load from service-provider configuration
		String msNodeEntityID = spConfiguration.getConfigurationValue(MOAIDConfigurationConstants.SERVICE_EXTERNAL_EID_SYSTEM_SERVICE_URL);
		
		if (StringUtils.isEmpty(msNodeEntityID)) {
			Logger.debug("No SP-specific E-ID system URL. Switch to general configuration ... ");
			if (authConfig instanceof AuthConfiguration) {
				AuthConfiguration moaAuthConfig = (AuthConfiguration)authConfig;					
				List<String> configuratedEntityIDs = KeyValueUtils.getListOfCSVValues(
						moaAuthConfig.getConfigurationWithKey(MOAIDConfigurationConstants.GENERAL_AUTH_SERVICES_EID_SYSTEM_SERVICE_URL));
				
				if (configuratedEntityIDs.size() > 0)
					msNodeEntityID = configuratedEntityIDs.get(0);
				else
					Logger.info("No E-ID system URL in IDP configuration. Switch to backup configuration ... ");
				
			} else 
				Logger.info("Basic configuration is NOT of type '" + AuthConfiguration.class.getName()
						+ "' Switch to generic Type ... ");
				
			
			if (StringUtils.isEmpty(msNodeEntityID))
				msNodeEntityID = authConfig.getBasicConfiguration(EIDProxyAuthConstants.CONFIG_PROPS_NODE_ENTITYID);
			
		}
						
		return msNodeEntityID;
	}
}