Reduce UI artefact size by removing moment.js

Remove moment.js dependency

interface/src/ntp/NTPStatusForm.tsx

@@ -1,5 +1,4 @@
 import React, { Component, Fragment } from 'react';
-import moment from 'moment';
 
 import { WithTheme, withTheme } from '@material-ui/core/styles';
 import { Avatar, Divider, List, ListItem, ListItemAvatar, ListItemText, Button } from '@material-ui/core';
@@ -14,7 +13,7 @@ import RefreshIcon from '@material-ui/icons/Refresh';
 
 import { RestFormProps, FormButton, HighlightAvatar } from '../components';
 import { isNtpActive, ntpStatusHighlight, ntpStatus } from './NTPStatus';
-import { formatIsoDateTime, formatLocalDateTime } from './TimeFormat';
+import { formatDuration, formatDateTime, formatLocalDateTime } from './TimeFormat';
 import { NTPStatus, Time } from './types';
 import { redirectingAuthorizedFetch, withAuthenticatedContext, AuthenticatedContextProps } from '../authentication';
 import { TIME_ENDPOINT } from '../api';
@@ -39,34 +38,34 @@ class NTPStatusForm extends Component<NTPStatusFormProps, NTPStatusFormState> {
   }
 
   updateLocalTime = (event: React.ChangeEvent<HTMLInputElement>) => {
-    this.setState({ localTime: event.target.value });
+    this.setState({
+      localTime: event.target.value
+    });
   }
 
   openSetTime = () => {
-    this.setState({ localTime: formatLocalDateTime(moment()), settingTime: true, });
+    this.setState({
+      localTime: formatLocalDateTime(new Date()),
+      settingTime: true
+    });
   }
 
   closeSetTime = () => {
-    this.setState({ settingTime: false });
+    this.setState({
+      settingTime: false
+    });
   }
 
-  createAdjustedTime = (): Time => {
-    const currentLocalTime = moment(this.props.data.time_local);
-    const newLocalTime = moment(this.state.localTime);
-    newLocalTime.subtract(currentLocalTime.utcOffset())
-    newLocalTime.milliseconds(0);
-    newLocalTime.utc();
-    return {
-      time_utc: newLocalTime.format()
-    }
-  }
+  createTime = (): Time => ({
+    local_time: formatLocalDateTime(new Date(this.state.localTime))
+  });
 
   configureTime = () => {
     this.setState({ processing: true });
     redirectingAuthorizedFetch(TIME_ENDPOINT,
       {
         method: 'POST',
-        body: JSON.stringify(this.createAdjustedTime()),
+        body: JSON.stringify(this.createTime()),
         headers: {
           'Content-Type': 'application/json'
         }
@@ -153,7 +152,7 @@ class NTPStatusForm extends Component<NTPStatusFormProps, NTPStatusFormState> {
                 <AccessTimeIcon />
               </Avatar>
             </ListItemAvatar>
-            <ListItemText primary="Local Time" secondary={formatIsoDateTime(data.time_local)} />
+            <ListItemText primary="Local Time" secondary={formatDateTime(data.local_time)} />
           </ListItem>
           <Divider variant="inset" component="li" />
           <ListItem>
@@ -162,7 +161,7 @@ class NTPStatusForm extends Component<NTPStatusFormProps, NTPStatusFormState> {
                 <SwapVerticalCircleIcon />
               </Avatar>
             </ListItemAvatar>
-            <ListItemText primary="UTC Time" secondary={formatIsoDateTime(data.time_utc)} />
+            <ListItemText primary="UTC Time" secondary={formatDateTime(data.utc_time)} />
           </ListItem>
           <Divider variant="inset" component="li" />
           <ListItem>
@@ -171,7 +170,7 @@ class NTPStatusForm extends Component<NTPStatusFormProps, NTPStatusFormState> {
                 <AvTimerIcon />
               </Avatar>
             </ListItemAvatar>
-            <ListItemText primary="Uptime" secondary={moment.duration(data.uptime, 'seconds').humanize()} />
+            <ListItemText primary="Uptime" secondary={formatDuration(data.uptime)} />
           </ListItem>
           <Divider variant="inset" component="li" />
         </List>

interface/src/ntp/TimeFormat.ts

@@ -1,5 +1,45 @@
-import moment, { Moment } from 'moment';
+import parseMilliseconds from 'parse-ms';
 
-export const formatIsoDateTime = (isoDateString: string) => moment.parseZone(isoDateString).format('ll @ HH:mm:ss');
+const LOCALE_FORMAT = new Intl.DateTimeFormat(
+  [...window.navigator.languages],
+  {
+    day: 'numeric',
+    month: 'short',
+    year: 'numeric',
+    hour: 'numeric',
+    minute: 'numeric',
+    second: 'numeric',
+    hour12: false
+  }
+);
 
-export const formatLocalDateTime = (moment: Moment) => moment.format('YYYY-MM-DDTHH:mm');
+export const formatDateTime = (dateTime: string) => {
+  return LOCALE_FORMAT.format(new Date(dateTime.substr(0, 19)));
+}
+
+export const formatLocalDateTime = (date: Date) => {
+  return new Date(date.getTime() - date.getTimezoneOffset() * 60000)
+    .toISOString()
+    .slice(0, -1)
+    .substr(0, 19);
+}
+
+export const formatDuration = (duration: number) => {
+  const { days, hours, minutes, seconds } = parseMilliseconds(duration * 1000);
+  var formatted = '';
+  if (days) {
+    formatted += pluralize(days, 'day');
+  }
+  if (formatted || hours) {
+    formatted += pluralize(hours, 'hour');
+  }
+  if (formatted || minutes) {
+    formatted += pluralize(minutes, 'minute');
+  }
+  if (formatted || seconds) {
+    formatted += pluralize(seconds, 'second');
+  }
+  return formatted;
+}
+
+const pluralize = (count: number, noun: string, suffix: string = 's') => ` ${count} ${noun}${count !== 1 ? suffix : ''} `;

interface/src/ntp/types.ts

@@ -5,8 +5,8 @@ export enum NTPSyncStatus {
 
 export interface NTPStatus {
   status: NTPSyncStatus;
-  time_utc: string;
-  time_local: string;
+  utc_time: string;
+  local_time: string;
   server: string;
   uptime: number;
 }
@@ -19,5 +19,5 @@ export interface NTPSettings {
 }
 
 export interface Time {
-  time_utc: string;
+  local_time: string;
 }