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package com.shapestone.session;

import java.util.*;

import static com.shapestone.session.SessionEvent.builder;
import static java.lang.String.valueOf;
import static java.lang.System.currentTimeMillis;
import static java.util.UUID.randomUUID;
import static org.apache.commons.lang3.StringUtils.isEmpty;

/**
 * Name: Michael Williams
 * Date: 9/21/16.
 */
public class SessionOverseer {

  private final Session session;

  public SessionOverseer(Session session) {
    if (isEmpty(session.getSessionId())) {
      session.setSessionId(randomUUID().toString());
    }

    if (session.getModifiedDate() == null || session.getModifiedDate() <= 0) {
      session.setModifiedDate(currentTimeMillis());
    }

    if (session.getCreatedDate() == null || session.getCreatedDate() <= 0) {
      session.setCreatedDate(currentTimeMillis());
    }

    this.session = session;
  }

  public Session createStoreNewSession() {
    return new Session(session);
  }

  public Session createStoreUpdatedSession() {
    final Session session = new Session(this.session);
    session.setCreatedDate(null);
    return session;
  }

  public List createSessionEvents() {
    final List sessionEvents =  new ArrayList<>();
    final long timeMillis = currentTimeMillis();

    //    private String partyId;
    if (!isEmpty(session.getPartyId())) {
      sessionEvents.add(builder()
        .eventId(randomUUID().toString())
        .eventSourceId(session.getSessionId())
        .eventSource("SESSION")
        .eventType("CREATE")
        .name("partyId")
        .valueType(String.class.getName())
        .value(session.getPartyId())
        .createdDate(timeMillis)
        .build());
    }

    //    private String userAgent;
    if (!isEmpty(session.getUserAgent())) {
      sessionEvents.add(builder()
        .eventId(randomUUID().toString())
        .eventSourceId(session.getSessionId())
        .eventSource("SESSION")
        .eventType("CREATE")
        .name("userAgent")
        .eventType(String.class.getName())
        .value(session.getUserAgent())
        .createdDate(timeMillis)
        .build());
    }

    //    private String ipAddress;
    if (!isEmpty(session.getIpAddress())) {
      sessionEvents.add(builder()
        .eventId(randomUUID().toString())
        .eventSourceId(session.getSessionId())
        .eventSource("SESSION")
        .eventType("CREATE")
        .name("ipAddress")
        .valueType(String.class.getName())
        .value(session.getIpAddress())
        .createdDate(timeMillis)
        .build());
    }

    //    private String language;
    if (!isEmpty(session.getLanguage())) {
      sessionEvents.add(builder()
        .eventId(randomUUID().toString())
        .eventSourceId(session.getSessionId())
        .eventSource("SESSION")
        .eventType("CREATE")
        .name("language")
        .valueType(String.class.getName())
        .value(session.getLanguage())
        .createdDate(timeMillis)
        .build());
    }

    //    private String fingerPrint;
    if (!isEmpty(session.getFingerPrint())) {
      sessionEvents.add(builder()
        .eventId(randomUUID().toString())
        .eventSourceId(session.getSessionId())
        .eventSource("SESSION")
        .eventType("CREATE")
        .name("fingerPrint")
        .valueType(String.class.getName())
        .value(session.getFingerPrint())
        .createdDate(timeMillis)
        .build());
    }

    //    private Long modifiedDate;
    if (session.getModifiedDate() != null && session.getModifiedDate() > 0) {
      sessionEvents.add(builder()
        .eventId(randomUUID().toString())
        .eventSourceId(session.getSessionId())
        .eventSource("SESSION")
        .eventType("CREATE")
        .name("modifiedDate")
        .valueType(String.class.getName())
        .value(valueOf(session.getModifiedDate()))
        .createdDate(timeMillis)
        .build());
    }

    //    private Long createdDate;
    if (session.getCreatedDate() != null && session.getCreatedDate() > 0) {
      sessionEvents.add(builder()
        .eventId(randomUUID().toString())
        .eventSourceId(session.getSessionId())
        .eventSource("SESSION")
        .eventType("CREATE")
        .name("createdDate")
        .valueType(String.class.getName())
        .createdDate(timeMillis)
        .build());
    }

    return sessionEvents;
  }

}