// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0

// snippet-start:[javascript.v3.location.hello]
import { fileURLToPath } from "node:url";
import {
  LocationClient,
  ListGeofenceCollectionsCommand,
} from "@aws-sdk/client-location";

/**
 * Lists geofences from a specified geofence collection asynchronously.
 */
export const main = async () => {
  const region = "eu-west-1";
  const locationClient = new LocationClient({ region: region });
  const listGeofenceCollParams = {
    MaxResults: 100,
  };
  try {
    const command = new ListGeofenceCollectionsCommand(listGeofenceCollParams);
    const response = await locationClient.send(command);
    const geofenceEntries = response.Entries;
    if (geofenceEntries.length === 0) {
      console.log("No Geofences were found in the collection.");
    } else {
      for (const geofenceEntry of geofenceEntries) {
        console.log(`Geofence ID: ${geofenceEntry.CollectionName}`);
      }
    }
  } catch (error) {
    console.error(
      `A validation error occurred while creating geofence: ${error} \n Exiting program.`,
    );
    return;
  }
};

// snippet-end:[javascript.v3.location.hello]

// Invoke main function if this file was run directly.
if (process.argv[1] === fileURLToPath(import.meta.url)) {
  main();
}