package at.gv.egiz.eaaf.core.impl.idp.builder.attributes;

import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import at.gv.egiz.eaaf.core.api.idp.IAttributeGenerator;
import at.gv.egiz.eaaf.core.api.idp.IAuthData;
import at.gv.egiz.eaaf.core.api.idp.IEidAuthData;
import at.gv.egiz.eaaf.core.api.idp.IPvpAttributeBuilder;
import at.gv.egiz.eaaf.core.api.idp.ISpConfiguration;
import at.gv.egiz.eaaf.core.exceptions.AttributeBuilderException;
import at.gv.egiz.eaaf.core.exceptions.UnavailableAttributeException;

@PvpMetadata
public class EidCcsUrl implements IPvpAttributeBuilder {
  private static final Logger log = LoggerFactory.getLogger(EID_CCS_URL_NAME);

  @Override
  public String getName() {
    return EID_CCS_URL_NAME;
  }

  @Override
  public <ATT> ATT build(final ISpConfiguration oaParam, final IAuthData authData,
      final IAttributeGenerator<ATT> g) throws AttributeBuilderException {
    if (authData instanceof IEidAuthData) {
      final String bkuurl = ((IEidAuthData) authData).getVdaEndPointUrl();
      if (StringUtils.isNotEmpty(bkuurl)) {
        return g.buildStringAttribute(EID_CCS_URL_FRIENDLY_NAME, EID_CCS_URL_NAME, bkuurl);
      }

    } else {
      log.info(EID_CCS_URL_FRIENDLY_NAME + " is only available in E-ID context");
      
    }

    throw new UnavailableAttributeException(EID_CCS_URL_NAME);
  }

  @Override
  public <ATT> ATT buildEmpty(final IAttributeGenerator<ATT> g) {
    return g.buildEmptyAttribute(EID_CCS_URL_FRIENDLY_NAME, EID_CCS_URL_NAME);
  }

}