package at.gv.egiz.asic.impl;

import java.util.ArrayList;
import java.util.Date;
import java.util.Iterator;
import java.util.List;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import at.gv.egiz.asic.api.ASiC;
import at.gv.egiz.asic.api.ASiCVerificationResult;
import at.gv.egiz.asic.api.ASiCVerifier;
import at.gv.egiz.asic.impl.verifier.ExtendedCAdESVerifier;
import at.gv.egiz.asic.impl.verifier.ExtendedXAdESVerifier;
import at.gv.egiz.asic.impl.verifier.SimpleCAdESVerifier;
import at.gv.egiz.asic.impl.verifier.SimpleXAdESVerifier;
import at.gv.egovernment.moa.spss.MOAException;
import at.gv.egovernment.moa.spss.MOASystemException;

/**
 * Created by Andreas Fitzek on 6/15/16.
 */
public class ASiCMOAVerifier implements ASiCVerifier {

  private static final Logger logger = LoggerFactory.getLogger(ASiCMOAVerifier.class);

  private final List<Verifier> verifierMap = new ArrayList<>();

  public ASiCMOAVerifier() {
    verifierMap.add(new SimpleCAdESVerifier());
    verifierMap.add(new SimpleXAdESVerifier());
    verifierMap.add(new ExtendedCAdESVerifier());
    verifierMap.add(new ExtendedXAdESVerifier());
  }

  @Override
  public List<ASiCVerificationResult> verify(ASiC asic, String trustProfileID, Date date)
      throws MOAException {
    final List<ASiCVerificationResult> response = new ArrayList<>();
    boolean handled = false;

    final Iterator<Verifier> verifierIterator = verifierMap.iterator();

    while (verifierIterator.hasNext()) {
      final Verifier verifier = verifierIterator.next();
      if (verifier.handles(asic)) {
        verifier.verify(asic, trustProfileID, date, response);
        handled = true;
        break;
      }
    }

    if (!handled) {
      logger.warn("Cannot handle ASiC: {}", asic);
      throw new MOASystemException("asic.0016", null);
    }

    return response;
  }

}