package at.gv.egovernment.moa.id.auth.modules.ehvd.attributes;

import java.util.stream.Collectors;

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.IPVPAttributeBuilder;
import at.gv.egiz.eaaf.core.api.idp.ISPConfiguration;
import at.gv.egiz.eaaf.core.exceptions.AttributeBuilderException;
import at.gv.egiz.eaaf.core.impl.idp.builder.attributes.PVPMETADATA;
import at.gv.egovernment.moa.id.data.IMOAAuthData;
import at.gv.egovernment.moa.logging.Logger;

@PVPMETADATA
public class PvpRoleAttributeBuilder implements IPVPAttributeBuilder {

  private static final String ROLE_NAME_DELIMITER = ";";

  @Override
  public <ATT> ATT build(ISPConfiguration oaParam, IAuthData authData,
      IAttributeGenerator<ATT> g) throws AttributeBuilderException {
    if (authData instanceof IMOAAuthData) {
      final IMOAAuthData moaAuthData = (IMOAAuthData) authData;
      if (moaAuthData.getAuthenticationRoles() != null
          && !moaAuthData.getAuthenticationRoles().isEmpty()) {
        return g.buildStringAttribute(ROLES_FRIENDLY_NAME, ROLES_NAME,
            moaAuthData.getAuthenticationRoles().stream()
                .map(el -> el.getRawRoleString())
                .collect(Collectors.joining(ROLE_NAME_DELIMITER)));

      } else {
        Logger.trace("No PVP roles available. Skipping attribute: " + ROLES_FRIENDLY_NAME);

      }

    } else {
      Logger.info("Attribute: " + ROLES_FRIENDLY_NAME + " is only available in MOA-ID context");

    }

    return null;

  }

  @Override
  public <ATT> ATT buildEmpty(IAttributeGenerator<ATT> g) {
    return g.buildEmptyAttribute(ROLES_FRIENDLY_NAME, ROLES_NAME);

  }

  @Override
  public String getName() {
    return ROLES_NAME;

  }

}