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package apoc.couchbase.document;

import java.time.Instant;
import java.util.Map;

import com.couchbase.client.core.msg.kv.MutationToken;
import com.couchbase.client.java.json.JsonObject;
import com.couchbase.client.java.kv.GetResult;
import com.couchbase.client.java.kv.MutationResult;

import static apoc.couchbase.document.CouchbaseUtils.convertMutationTokenToMap;

/**
 * Represents a {@link MutationResult} or a {@link GetResult}.
 *
 * @since 15.8.2016
 * @author inserpio
 * @see JsonObject
 */
public abstract class CouchbaseObjectDocument implements CouchbaseDocument {

  /**
   * The per-bucket unique ID of the {@link GetResult} or the {@link MutationResult}.
   */
  public String id;

  /**
   * The optional expiration time for the {@link GetResult} (0 if not set).
   */
  public long expiry;

  /**
   * The last-known CAS (Compare And Swap) value for the {@link MutationResult} (0 if not set).
   */
  public long cas;

  /**
   * The optional, opaque mutation token set after a successful mutation and if
   * enabled on the environment.
   */
  public Map mutationToken;


  public CouchbaseObjectDocument(GetResult getResult, String id, MutationToken mutationToken) {
    this.id = id;
    this.expiry = getResult.expiryTime().orElse(Instant.ofEpochMilli(0)).toEpochMilli();
    this.cas = getResult.cas();
    this.mutationToken = convertMutationTokenToMap(mutationToken);
  }

  @Override
  public String getId() {
    return this.id;
  }

  @Override
  public long getCas() {
    return this.cas;
  }

  @Override
  public long getExpiry() {
    return this.expiry;
  }

  @Override
  public Map getMutationToken() {
    return this.mutationToken;
  }

}