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/*
 * Copyright Camunda Services GmbH and/or licensed to Camunda Services GmbH under
 * one or more contributor license agreements. See the NOTICE file distributed
 * with this work for additional information regarding copyright ownership.
 * Licensed under the Camunda License 1.0. You may not use this file
 * except in compliance with the Camunda License 1.0.
 */
package io.camunda.exporter.utils;

import io.camunda.exporter.cache.ExporterEntityCache;
import io.camunda.exporter.cache.process.CachedProcessEntity;
import java.util.Optional;

public final class ProcessCacheUtil {

  private ProcessCacheUtil() {
    // utility class
  }

  /**
   * Returns callActivityId from process cache by the index in call activities list sorted
   * lexicographically.
   *
   * @param processCache
   * @param processDefinitionKey
   * @param callActivityIndex
   * @return
   */
  public static Optional getCallActivityId(
      final ExporterEntityCache processCache,
      final Long processDefinitionKey,
      final Integer callActivityIndex) {

    if (processDefinitionKey == null) {
      return Optional.empty();
    }
    final var cachedProcess = processCache.get(processDefinitionKey);
    if (cachedProcess.isEmpty()
        || cachedProcess.get().callElementIds() == null
        || callActivityIndex == null) {
      return Optional.empty();
    }
    return Optional.of(cachedProcess.get().callElementIds().get(callActivityIndex));
  }
}