BackupScheduleSetting: enable fetching and updating schedule time

client/components/jetpack/backup-schedule-setting/index.tsx

@@ -1,39 +1,118 @@
 import { Card } from '@automattic/components';
+import { useQueryClient } from '@tanstack/react-query';
 import { SelectControl } from '@wordpress/components';
-import { useTranslate } from 'i18n-calypso';
+import { TranslateResult, useTranslate } from 'i18n-calypso';
+import moment from 'moment';
+import useScheduledTimeMutation from 'calypso/data/jetpack-backup/use-scheduled-time-mutation';
+import useScheduledTimeQuery from 'calypso/data/jetpack-backup/use-scheduled-time-query';
+import { applySiteOffset } from 'calypso/lib/site/timezone';
+import { useDispatch, useSelector } from 'calypso/state';
+import { errorNotice, successNotice } from 'calypso/state/notices/actions';
+import getSiteGmtOffset from 'calypso/state/selectors/get-site-gmt-offset';
+import getSiteTimezoneValue from 'calypso/state/selectors/get-site-timezone-value';
+import { getSelectedSiteId } from 'calypso/state/ui/selectors';
 import type { FunctionComponent } from 'react';
 import './style.scss';
 
-// Helper function to generate all time slots
-const generateTimeSlots = (): { label: string; value: string }[] => {
-	const options = [];
-	for ( let hour = 0; hour < 24; hour++ ) {
-		const startTime = hour.toString().padStart( 2, '0' ) + ':00';
-		const endTime = hour.toString().padStart( 2, '0' ) + ':59';
-		options.push( {
-			label: `${ startTime } - ${ endTime }`,
-			value: hour.toString(),
-		} );
-	}
-	return options;
-};
-
 const BackupScheduleSetting: FunctionComponent = () => {
+	const dispatch = useDispatch();
 	const translate = useTranslate();
-	const options = generateTimeSlots();
+	const queryClient = useQueryClient();
+	const siteId = useSelector( getSelectedSiteId ) as number;
+	const timezone = useSelector( ( state ) => getSiteTimezoneValue( state, siteId ) );
+	const gmtOffset = useSelector( ( state ) => getSiteGmtOffset( state, siteId ) );
+
+	const convertHourToRange = ( hour: number ): string => {
+		const period = hour < 12 ? 'AM' : 'PM';
+		const adjustedHour = hour % 12 || 12;
+		return `${ adjustedHour }:00 - ${ adjustedHour }:59 ${ period }`;
+	};
+
+	const generateTimeSlots = (): { label: string; value: string }[] => {
+		const options = [];
+		for ( let hour = 0; hour < 24; hour++ ) {
+			const utcTime = moment.utc().startOf( 'day' ).hour( hour );
+			const localTime =
+				timezone && gmtOffset
+					? applySiteOffset( utcTime, { timezone, gmtOffset } )
+					: utcTime.local();
+			const localHour = localTime.hour();
+			const timeRange = convertHourToRange( localHour );
+
+			options.push( {
+				label: timeRange,
+				value: hour.toString(),
+				localHour, // for sorting
+			} );
+		}
+
+		// Sort options by local hour before returning
+		options.sort( ( a, b ) => a.localHour - b.localHour );
+
+		// Remove the localHour from the final result as it's not needed anymore
+		return options.map( ( { label, value } ) => ( { label, value } ) );
+	};
+
+	const timeSlotOptions = generateTimeSlots();
+	const { isFetching: isScheduledTimeQueryFetching, data } = useScheduledTimeQuery( siteId );
+	const { isPending: isScheduledTimeMutationLoading, mutate: scheduledTimeMutate } =
+		useScheduledTimeMutation( {
+			onSuccess: () => {
+				queryClient.invalidateQueries( { queryKey: [ 'jetpack-backup-scheduled-time', siteId ] } );
+				dispatch(
+					successNotice( translate( 'Daily backup time successfully changed.' ), {
+						duration: 5000,
+						isPersistent: true,
+					} )
+				);
+			},
+			onError: () => {
+				dispatch(
+					errorNotice( translate( 'Update daily backup time failed. Please, try again.' ), {
+						duration: 5000,
+						isPersistent: true,
+					} )
+				);
+			},
+		} );
+
+	const isLoading = isScheduledTimeQueryFetching || isScheduledTimeMutationLoading;
+
+	const updateScheduledTime = ( selectedTime: string ) => {
+		scheduledTimeMutate( { scheduledHour: Number( selectedTime ) } );
+	};
+
+	const getScheduleInfoMessage = (): TranslateResult => {
+		const hour = data?.scheduledHour || 0;
+		const range = convertHourToRange( hour );
+
+		if ( ! data || ! data.scheduledBy ) {
+			return `${ translate( 'Default time' ) }. UTC: ${ range }`;
+		}
+		return `${ translate( 'Time set by %(scheduledBy)s', {
+			args: { scheduledBy: data.scheduledBy },
+		} ) }. UTC: ${ range }`;
+	};
 
 	return (
 		<div id="backup-schedule" className="backup-schedule-setting">
 			<Card compact className="setting-title">
-				<h3>{ translate( 'Backup schedule' ) }</h3>
+				<h3>{ translate( 'Daily backup time schedule' ) }</h3>
 			</Card>
 			<Card className="setting-content">
 				<p>
 					{ translate(
 						'Pick a timeframe for your backup to run. Some site owners prefer scheduling backups at specific times for better control.'
 					) }
 				</p>
-				<SelectControl options={ options } help={ translate( 'Default time' ) } />
+				<SelectControl
+					disabled={ isLoading }
+					options={ timeSlotOptions }
+					value={ data?.scheduledHour?.toString() || '' }
+					help={ getScheduleInfoMessage() }
+					onChange={ updateScheduledTime }
+					__nextHasNoMarginBottom
+				/>
 			</Card>
 		</div>
 	);

client/data/jetpack-backup/use-scheduled-time-mutation.ts

@@ -0,0 +1,34 @@
+import { useMutation, UseMutationResult, UseMutationOptions } from '@tanstack/react-query';
+import wpcom from 'calypso/lib/wp';
+import { useSelector } from 'calypso/state';
+import { getSelectedSiteId } from 'calypso/state/ui/selectors';
+
+export interface UpdateSchedulePayload {
+	scheduledHour: number; // The new scheduled hour (0-23)
+}
+
+export interface UpdateScheduleResponse {
+	ok: boolean;
+	error: string;
+}
+
+export default function useScheduledTimeMutation<
+	TData = UpdateScheduleResponse,
+	TError = Error,
+	TContext = unknown,
+>(
+	options: UseMutationOptions< TData, TError, UpdateSchedulePayload, TContext > = {}
+): UseMutationResult< TData, TError, UpdateSchedulePayload, TContext > {
+	const siteId = useSelector( getSelectedSiteId ) as number;
+
+	return useMutation< TData, TError, UpdateSchedulePayload, TContext >( {
+		...options,
+		mutationFn: ( { scheduledHour }: UpdateSchedulePayload ): Promise< TData > => {
+			return wpcom.req.post( {
+				path: `/sites/${ siteId }/rewind/scheduled`,
+				apiNamespace: 'wpcom/v2',
+				body: { schedule_hour: scheduledHour },
+			} );
+		},
+	} );
+}

client/data/jetpack-backup/use-scheduled-time-query.ts

@@ -0,0 +1,34 @@
+import { useQuery, UseQueryResult } from '@tanstack/react-query';
+import wpcom from 'calypso/lib/wp';
+
+export interface ScheduledTimeApi {
+	ok: boolean;
+	scheduled_hour: number;
+	scheduled_by: string | null;
+}
+
+export interface ScheduledTime {
+	scheduledHour: number;
+	scheduledBy: string | null;
+}
+
+const useScheduledTimeQuery = ( blogId: number ): UseQueryResult< ScheduledTime, Error > => {
+	const queryKey = [ 'jetpack-backup-scheduled-time', blogId ];
+
+	return useQuery< ScheduledTimeApi, Error, ScheduledTime >( {
+		queryKey,
+		queryFn: async () =>
+			wpcom.req.get( {
+				path: `/sites/${ blogId }/rewind/scheduled`,
+				apiNamespace: 'wpcom/v2',
+			} ),
+		refetchIntervalInBackground: false,
+		refetchOnWindowFocus: false,
+		select: ( data ) => ( {
+			scheduledHour: data.scheduled_hour,
+			scheduledBy: data.scheduled_by,
+		} ),
+	} );
+};
+
+export default useScheduledTimeQuery;

client/jetpack-cloud/sections/settings/index.js

@@ -10,6 +10,7 @@ import {
 } from 'calypso/jetpack-cloud/sections/settings/controller';
 import isJetpackCloud from 'calypso/lib/jetpack/is-jetpack-cloud';
 import { confirmDisconnectPath, disconnectPath, settingsPath } from 'calypso/lib/jetpack/paths';
+import wrapInSiteOffsetProvider from 'calypso/lib/wrap-in-site-offset';
 import { navigation, siteSelection, sites } from 'calypso/my-sites/controller';
 
 export default function () {
@@ -20,6 +21,7 @@ export default function () {
 			siteSelection,
 			navigation,
 			isEnabled( 'jetpack/server-credentials-advanced-flow' ) ? advancedCredentials : settings,
+			wrapInSiteOffsetProvider,
 			showNotAuthorizedForNonAdmins,
 			makeLayout,
 			clientRender

config/jetpack-cloud-development.json

@@ -47,6 +47,7 @@
 		"jetpack/backup-messaging-i3": true,
 		"jetpack/backup-restore-preflight-checks": true,
 		"jetpack/backup-retention-settings": true,
+		"jetpack/backup-schedule-setting": true,
 		"jetpack/card-addition-improvements": true,
 		"jetpack/golden-token": true,
 		"jetpack/plugin-management": true,

config/jetpack-cloud-horizon.json

@@ -41,6 +41,7 @@
 		"jetpack/backup-messaging-i3": true,
 		"jetpack/backup-restore-preflight-checks": true,
 		"jetpack/backup-retention-settings": true,
+		"jetpack/backup-schedule-setting": true,
 		"jetpack/card-addition-improvements": true,
 		"jetpack/golden-token": false,
 		"jetpack/plugin-management": true,