// @flow
import React from 'react';
import 'scss/component/_view_count.scss';

type Props = {
  uri: string,
  isLivestream?: boolean,
  // --- select ---
  claim: ?StreamClaim,
  viewCount: string,
  lang: ?string,
};

export default function FileViewCountInline(props: Props) {
  const { isLivestream, claim, viewCount, lang } = props;
  let formattedViewCount;

  try {
    formattedViewCount = Number(viewCount).toLocaleString(lang || 'en', {
      compactDisplay: 'short',
      notation: 'compact',
    });
  } catch (err) {
    formattedViewCount = Number(viewCount).toLocaleString();
  }

  // Limit the view-count visibility to Channel Pages for now. We'll eventually
  // show it everywhere, so this band-aid would be the easiest to clean up
  // (only one place edit/remove).
  const pathname: string = window.location.pathname;
  const isOnChannelPage = pathname && pathname.startsWith('/@') && pathname.indexOf('/', 1) === -1;

  if (!viewCount || (claim && claim.repost_url) || isLivestream || !isOnChannelPage) {
    // (1) Currently, selectViewCountForUri doesn't differentiate between
    // un-fetched vs zero view-count. But since it's probably not ideal to
    // highlight that a claim has 0 count, let's just not show anything.
    // (2) No idea how to get the repost source's claim ID from the repost claim,
    // so hiding it for now.
    return null;
  }

  return (
    <span className="view_count">
      {viewCount !== 1 ? __('%view_count% views', { view_count: formattedViewCount }) : __('1 view')}
    </span>
  );
}