/**

 * Copyright (c) Meta Platforms, Inc. and affiliates.

 *

 * This source code is licensed under the MIT license found in the

 * LICENSE file in the root directory of this source tree.

 *

 * @flow

 */

import type {SchedulingEvent} from '../types';

import prettyMilliseconds from 'pretty-ms';

export function formatTimestamp(ms: number): string {

  return (

    ms.toLocaleString(undefined, {

      minimumFractionDigits: 1,

      maximumFractionDigits: 1,

    }) + 'ms'

  );

}

export function formatDuration(ms: number): string {

  return prettyMilliseconds(ms, {millisecondsDecimalDigits: 1});

}

export function trimString(string: string, length: number): string {

  if (string.length > length) {

    return `${string.slice(0, length - 1)}…`;

  }

  return string;

}

export function getSchedulingEventLabel(event: SchedulingEvent): string | null {

  switch (event.type) {

    case 'schedule-render':

      return 'render scheduled';

    case 'schedule-state-update':

      return 'state update scheduled';

    case 'schedule-force-update':

      return 'force update scheduled';

    default:

      return null;

  }

}