Fix livestream countdown i18n

Ticket: 1228

## Code changes
- Pass through `getTimeAgoStr` so that the value gets localized.
- Pass the simpler `number` around instead of the `moment` object for better memoization.

## Notable differences
Due to how `getTimeAgoStr` is written, we now get to see the time actually counting down, vs "in a few seconds" currently in production.  I think the counting-down behavior was the original intentional, since a 1s timer was used (otherwise, a 1-minute timer could be used) ... or maybe not since streams may not start on the dot.

ui/component/livestreamLayout/view.jsx

@@ -30,7 +30,7 @@ type Props = {
   claim: ?StreamClaim,
   hideComments: boolean,
   isCurrentClaimLive: boolean,
-  release: any,
+  releaseTimeMs: number,
   showLivestream: boolean,
   showScheduledInfo: boolean,
   uri: string,
@@ -44,7 +44,7 @@ export default function LivestreamLayout(props: Props) {
     claim,
     hideComments,
     isCurrentClaimLive,
-    release,
+    releaseTimeMs,
     showLivestream,
     showScheduledInfo,
     uri,
@@ -72,7 +72,7 @@ export default function LivestreamLayout(props: Props) {
         <div className={PRIMARY_PLAYER_WRAPPER_CLASS}>
           <FileRenderInitiator
             uri={claim.canonical_url}
-            customAction={showScheduledInfo && <LivestreamScheduledInfo release={release} />}
+            customAction={showScheduledInfo && <LivestreamScheduledInfo releaseTimeMs={releaseTimeMs} />}
           />
         </div>
 

ui/component/livestreamScheduledInfo/view.jsx

@@ -5,29 +5,36 @@ import * as ICONS from 'constants/icons';
 import Icon from 'component/common/icon';
 import moment from 'moment';
 import 'scss/component/livestream-scheduled-info.scss';
+import I18nMessage from 'component/i18nMessage';
+import { getTimeAgoStr } from 'util/time';
 
 type Props = {
-  release: any,
+  releaseTimeMs: number,
 };
 
 export default function LivestreamScheduledInfo(props: Props) {
-  const { release } = props;
-  const [startDateFromNow, setStartDateFromNow] = useState(release.fromNow());
+  const { releaseTimeMs } = props;
+  const [startDateFromNow, setStartDateFromNow] = useState('');
   const [inPast, setInPast] = useState('pending');
 
   useEffect(() => {
     const calcTime = () => {
-      setStartDateFromNow(release.fromNow());
-      setInPast(release.isBefore(moment()));
-    };
-    calcTime();
-    const intervalId = setInterval(calcTime, 1000);
-    return () => {
-      clearInterval(intervalId);
-    };
-  }, [release]);
+      const zeroDurationStr = '---';
+      const timeAgoStr = getTimeAgoStr(releaseTimeMs, true, true, zeroDurationStr);
 
-  const startDate = release.format('MMMM Do, h:mm a');
+      if (timeAgoStr === zeroDurationStr) {
+        setInPast(true);
+      } else {
+        setStartDateFromNow(timeAgoStr);
+        setInPast(releaseTimeMs < Date.now());
+      }
+    };
+
+    const intervalId = setInterval(calcTime, 1000);
+    return () => clearInterval(intervalId);
+  }, [releaseTimeMs]);
+
+  const startDate = moment(releaseTimeMs).format('MMMM Do, h:mm a');
 
   return (
     inPast !== 'pending' && (
@@ -36,7 +43,7 @@ export default function LivestreamScheduledInfo(props: Props) {
         <p className={'livestream-scheduled__time'}>
           {!inPast && (
             <span>
-              <span>{__('Live %time_date%', { time_date: startDateFromNow })}</span>
+              <I18nMessage tokens={{ time_date: startDateFromNow }}>Live %time_date%</I18nMessage>
               <br />
               <span className={'livestream-scheduled__date'}>{startDate}</span>
             </span>

ui/page/livestream/view.jsx

@@ -59,12 +59,11 @@ export default function LivestreamPage(props: Props) {
   const isCurrentClaimLive = isChannelBroadcasting && activeLivestreamForChannel.claimId === claimId;
   const livestreamChannelId = channelClaimId || '';
 
-  // $FlowFixMe
-  const release = moment.unix(claim.value.release_time);
+  const releaseTime: moment = moment.unix(claim?.value?.release_time || 0);
   const stringifiedClaim = JSON.stringify(claim);
 
   React.useEffect(() => {
-    // TODO: This should not be needed one we unify the livestream player (?)
+    // TODO: This should not be needed once we unify the livestream player (?)
     analytics.playerLoadedEvent('livestream', false);
   }, []);
 
@@ -88,10 +87,10 @@ export default function LivestreamPage(props: Props) {
   }, [channelUrl, claim, doCommentSocketConnect, uri]);
 
   const claimReleaseStartingSoonStatic = () =>
-    release.isBetween(moment(), moment().add(LIVESTREAM_STARTS_SOON_BUFFER, 'minutes'));
+    releaseTime.isBetween(moment(), moment().add(LIVESTREAM_STARTS_SOON_BUFFER, 'minutes'));
 
   const claimReleaseStartedRecentlyStatic = () =>
-    release.isBetween(moment().subtract(LIVESTREAM_STARTED_RECENTLY_BUFFER, 'minutes'), moment());
+    releaseTime.isBetween(moment().subtract(LIVESTREAM_STARTED_RECENTLY_BUFFER, 'minutes'), moment());
 
   // Find out current channels status + active live claim every 30 seconds (or 15 if not live)
   const fasterPoll = !isCurrentClaimLive && (claimReleaseStartingSoonStatic() || claimReleaseStartedRecentlyStatic());
@@ -105,14 +104,14 @@ export default function LivestreamPage(props: Props) {
   React.useEffect(() => {
     if (!isInitialized) return;
 
-    const claimReleaseInFuture = () => release.isAfter();
-    const claimReleaseInPast = () => release.isBefore();
+    const claimReleaseInFuture = () => releaseTime.isAfter();
+    const claimReleaseInPast = () => releaseTime.isBefore();
 
     const claimReleaseStartingSoon = () =>
-      release.isBetween(moment(), moment().add(LIVESTREAM_STARTS_SOON_BUFFER, 'minutes'));
+      releaseTime.isBetween(moment(), moment().add(LIVESTREAM_STARTS_SOON_BUFFER, 'minutes'));
 
     const claimReleaseStartedRecently = () =>
-      release.isBetween(moment().subtract(LIVESTREAM_STARTED_RECENTLY_BUFFER, 'minutes'), moment());
+      releaseTime.isBetween(moment().subtract(LIVESTREAM_STARTED_RECENTLY_BUFFER, 'minutes'), moment());
 
     const checkShowLivestream = () =>
       isChannelBroadcasting &&
@@ -141,7 +140,7 @@ export default function LivestreamPage(props: Props) {
     }
 
     return () => clearInterval(intervalId);
-  }, [chatDisabled, isChannelBroadcasting, release, isCurrentClaimLive, isInitialized]);
+  }, [chatDisabled, isChannelBroadcasting, releaseTime, isCurrentClaimLive, isInitialized]);
 
   React.useEffect(() => {
     if (uri && stringifiedClaim) {
@@ -181,7 +180,7 @@ export default function LivestreamPage(props: Props) {
           <LivestreamLayout
             uri={uri}
             hideComments={hideComments}
-            release={release}
+            releaseTimeMs={releaseTime.unix() * 1000}
             isCurrentClaimLive={isCurrentClaimLive}
             showLivestream={showLivestream}
             showScheduledInfo={showScheduledInfo}

ui/util/time.js

@@ -36,7 +36,12 @@ export function hmsToSeconds(str: string) {
 
 // Only intended use of future dates is for claims, in case of scheduled
 // publishes or livestreams, used in util/formatAriaLabel
-export function getTimeAgoStr(date: any, showFutureDate?: boolean, genericSecondsString?: boolean) {
+export function getTimeAgoStr(
+  date: any,
+  showFutureDate?: boolean,
+  genericSecondsString?: boolean,
+  zeroDurationStr: string = 'Just now'
+) {
   const suffixList = ['years', 'months', 'days', 'hours', 'minutes', 'seconds'];
   let duration = 0;
   let suffix = '';
@@ -59,7 +64,7 @@ export function getTimeAgoStr(date: any, showFutureDate?: boolean, genericSecond
     str = suffix === 'seconds' ? 'in a few seconds' : 'in %duration% ' + suffix;
     duration = duration * -1;
   } else if (duration <= 0) {
-    str = 'Just now';
+    str = zeroDurationStr;
   } else {
     str = suffix === 'seconds' && genericSecondsString ? 'A few seconds ago' : '%duration% ' + suffix + ' ago';
   }