/*
 * Copyright 2017 Graz University of Technology EAAF-Core Components has been developed in a
 * cooperation between EGIZ, A-SIT Plus, A-SIT, and Graz University of Technology.
 *
 * Licensed under the EUPL, Version 1.2 or - as soon they will be approved by the European
 * Commission - subsequent versions of the EUPL (the "Licence"); You may not use this work except in
 * compliance with the Licence. You may obtain a copy of the Licence at:
 * https://joinup.ec.europa.eu/news/understanding-eupl-v12
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the Licence
 * is distributed on an "AS IS" basis, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied. See the Licence for the specific language governing permissions and limitations under
 * the Licence.
 *
 * This product combines work with different licenses. See the "NOTICE" text file for details on the
 * various modules and licenses. The "NOTICE" text file is part of the distribution. Any derivative
 * works that you distribute must include a readable copy of the "NOTICE" text file.
*/

package at.gv.egiz.eaaf.core.impl.data;

import java.io.Serializable;
import java.util.Collections;
import java.util.Set;
import java.util.stream.Collectors;
import java.util.stream.Stream;

import com.fasterxml.jackson.annotation.JsonIgnore;
import com.fasterxml.jackson.annotation.JsonTypeInfo;
import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
import com.fasterxml.jackson.databind.annotation.JsonSerialize;

import at.gv.egiz.eaaf.core.api.IRequest;
import at.gv.egiz.eaaf.core.impl.json.EscapedJsonDeserializer;
import at.gv.egiz.eaaf.core.impl.json.EscapedJsonSerializer;
import at.gv.egiz.eaaf.core.impl.utils.EaafSerializationUtils;
import lombok.Getter;
import lombok.NoArgsConstructor;
import lombok.Setter;

/**
 * AuthProcess exception containter for Front-Channel exception handling.
 *
 * @author tlenz
 *
 */
@Getter
@Setter
@NoArgsConstructor
public class ExceptionContainer implements Serializable {

  private static final long serialVersionUID = 5355860753609684995L;

  private static final Set<Class<?>> ALLOWED_CLASS_TYPES = Stream.of(
      Throwable.class, StackTraceElement.class, StackTraceElement[].class, Collections.EMPTY_LIST.getClass())
      .collect(Collectors.toUnmodifiableSet());
      
  /**
   * Error that was thrown.
   */
  private byte[] internalExceptionThrown = null;

  /**
   * pendingReq that throws this error.
   */
  @JsonTypeInfo(include = JsonTypeInfo.As.PROPERTY, use = JsonTypeInfo.Id.CLASS, property = "@class")
  @JsonSerialize(using = EscapedJsonSerializer.class)
  @JsonDeserialize(using = EscapedJsonDeserializer.class)
  private IRequest pendingReq = null;

  /**
   * Create an exception container.
   * 
   * @param pendingReq Pending request that has an exception
   * @param exception  error
   */
  public ExceptionContainer(final IRequest pendingReq, final Throwable exception) {
    this.pendingReq = pendingReq;
    this.internalExceptionThrown = EaafSerializationUtils.serialize(exception);

  }

  /**
   * Get the exception that was thrown in this process.
   * 
   * @return Processing error
   */
  @JsonIgnore
  public Throwable getExceptionThrown() {
    return (Throwable) EaafSerializationUtils.typeSpecificDeserialize(
        internalExceptionThrown, ALLOWED_CLASS_TYPES, Throwable.class);

  }

  @JsonIgnore
  public IRequest getPendingRequest() {
    return this.pendingReq;

  }

  /**
   * Get the unique sessionId for this error.
   *
   * @return the uniqueSessionID
   */
  @JsonIgnore
  public String getUniqueSessionID() {
    if (this.pendingReq != null) {
      return this.pendingReq.getUniqueSessionIdentifier();
    } else {
      return null;
    }
  }

  /**
   * Get the unique transactionId for this error.
   *
   * @return the uniqueTransactionID
   */
  @JsonIgnore
  public String getUniqueTransactionID() {
    if (this.pendingReq != null) {
      return this.pendingReq.getUniqueTransactionIdentifier();
    } else {
      return null;
    }
  }

  /**
   * Get the service-provider identifier.
   *
   * @return the uniqueServiceProviderId
   */
  @JsonIgnore
  public String getUniqueServiceProviderId() {
    if (this.pendingReq != null && this.pendingReq.getServiceProviderConfiguration() != null) {
      return this.pendingReq.getServiceProviderConfiguration().getUniqueIdentifier();
    } else {
      return null;
    }
  }

}