// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

import * as SDK from '../../core/sdk/sdk.js';
import type * as Trace from '../../models/trace/trace.js';

/**
 * If the event's thread was identified as belonging to a worker, this will
 * return the target representing that worker. Otherwise, we return the primary
 * page's target.
 **/
export function targetForEvent(
    parsedTrace: Trace.TraceModel.ParsedTrace, event: Trace.Types.Events.Event): SDK.Target.Target|null {
  const targetManager = SDK.TargetManager.TargetManager.instance();
  const workerId = parsedTrace.data.Workers.workerIdByThread.get(event.tid);
  if (workerId) {
    return targetManager.targetById(workerId);
  }

  return targetManager.primaryPageTarget();
}