rename some hooks, make events deletable by creator

src/components/Event/Event.tsx

@@ -1,21 +1,11 @@
 import { useCallback, useEffect, useState } from 'react';
 import { getEvent } from '../api';
 import { IEvent } from '../types';
-import UILink from '../UI/UILink';
-import UISecondaryBox from '../UI/UISecondaryBox';
-import UISecondaryHeader from '../UI/UISecondaryHeader';
 import useImmutable from '../useImmutable';
+import EventContent from './EventContent';
 import EventContext from './EventContext';
-import EventDetails from './EventDetails';
-import EventInterestForm from './EventInterestForm';
 import EventPlaceholder from './EventPlaceholder';
 
-type NotNull<T> = T extends null ? never : T;
-
-function GroupName({ group }: { group: NotNull<IEvent['group']> }) {
-	return <UILink href={`/groups/${group.id}`}>{group.name}</UILink>;
-}
-
 export default function Event({
 	id,
 	initial,
@@ -44,8 +34,6 @@ export default function Event({
 		return <h1>Event Not Found</h1>;
 	}
 
-	const { name, group } = event;
-
 	return (
 		<EventContext.Provider
 			value={{
@@ -55,16 +43,7 @@ export default function Event({
 				tentativeInvites,
 			}}
 		>
-			<UISecondaryBox style={{ width: '35rem', maxWidth: '100vw' }}>
-				<div style={{ textAlign: 'center' }}>
-					<UISecondaryHeader>{name}</UISecondaryHeader>
-					<span>Created by {event.creator.name}</span>
-					<br />
-					{group && <GroupName group={group} />}
-				</div>
-				<EventDetails />
-				<EventInterestForm />
-			</UISecondaryBox>
+			<EventContent />
 		</EventContext.Provider>
 	);
 }

src/components/Event/EventAdminControls.tsx

@@ -0,0 +1,83 @@
+import { useCallback, useState } from 'react';
+import { deleteEvent } from '../api';
+import UIPressable from '../UI/UIPressable';
+import { useCurrentEventId } from './EventHooks';
+
+export enum AsyncCallbackStatus {
+	NONE = 0,
+	PENDING = 1,
+	RESOLVED = 2,
+	REJECTED = 3,
+}
+
+export function useAsyncCallback<T, A extends unknown[]>(
+	callback: (...args: A) => Promise<T>
+) {
+	const [status, setStatus] = useState(AsyncCallbackStatus.NONE);
+
+	const cb = useCallback(
+		(...args: any) => {
+			setStatus(AsyncCallbackStatus.PENDING);
+
+			callback(...args)
+				.then(() => setStatus(AsyncCallbackStatus.RESOLVED))
+				.catch(() => setStatus(AsyncCallbackStatus.REJECTED));
+		},
+		[callback]
+	);
+
+	const reset = useCallback(() => setStatus(AsyncCallbackStatus.NONE), []);
+
+	return [cb as typeof callback, status, reset] as const;
+}
+
+export default function EventAdminControls() {
+	const id = useCurrentEventId();
+	// const desc = useCurrentEventDescription();
+
+	// const descriptionTextareaRef = useRef<HTMLTextAreaElement>(null);
+
+	const [onPressDelete, deletionStatus] = useAsyncCallback(
+		useCallback(() => deleteEvent(id), [id])
+	);
+
+	// const [onSaveDescription, saveDescriptionStatus] = useAsyncCallback(
+	// 	useCallback(() => {
+	// 		if (!descriptionTextareaRef.current) {
+	// 			return Promise.reject('Textarea not ready');
+	// 		}
+	// 		setEditDescriptionOpen(false);
+	// 		return setEventDescription(id, descriptionTextareaRef.current.value);
+	// 	}, [id])
+	// );
+
+	// const [editDescriptionOpen, setEditDescriptionOpen] = useState(false);
+
+	return (
+		<div style={{ display: 'flex' }}>
+			{deletionStatus === AsyncCallbackStatus.NONE ? (
+				<UIPressable onClick={onPressDelete}>Delete</UIPressable>
+			) : deletionStatus === AsyncCallbackStatus.PENDING ? (
+				<span>Deleting...</span>
+			) : deletionStatus === AsyncCallbackStatus.RESOLVED ? (
+				<span>Deleted</span>
+			) : (
+				<span>Delete failed</span>
+			)}
+
+			{/* {!editDescriptionOpen ? (
+				<UIPressable onClick={() => setEditDescriptionOpen(true)}>
+					Edit description
+				</UIPressable>
+			) : (
+				<>
+					<textarea defaultValue={desc} ref={descriptionTextareaRef} />
+					<UIPressable onClick={onSaveDescription}>Save</UIPressable>
+					<UIPressable onClick={() => setEditDescriptionOpen(false)}>
+						Cancel
+					</UIPressable>
+				</>
+			)} */}
+		</div>
+	);
+}

src/components/Event/EventCarpoolCreateButton.tsx

@@ -5,7 +5,7 @@ import { useMe } from '../hooks';
 import UIButton from '../UI/UIButton';
 import UILink from '../UI/UILink';
 import EventContext from './EventContext';
-import { useMyCarpool } from './EventHooks';
+import { useCurrentEventCarpool } from './EventHooks';
 
 type CreationStatus = null | 'pending' | 'completed' | 'errored';
 
@@ -16,7 +16,7 @@ export default function EventCarpoolCreateButton() {
 	const [createdCarpoolId, setCreatedCarpoolId] = useState<null | number>(null);
 
 	const me = useMe() || { id: 0, name: '' };
-	const myCarpool = useMyCarpool();
+	const myCarpool = useCurrentEventCarpool();
 
 	const createCarpoolCallback = useCallback(async () => {
 		setCreationStatus('pending');

src/components/Event/EventCarpools.tsx

@@ -11,7 +11,7 @@ import { useMe } from '../hooks';
 import { IEvent, IEventSignupComplete } from '../types';
 import useOptimalPath from '../useOptimalPath';
 import EventContext from './EventContext';
-import { useMySignup } from './EventHooks';
+import { useCurrentEventSignup } from './EventHooks';
 
 function useMemberLocations(members: IEvent['carpools'][0]['members']) {
 	const { event } = useContext(EventContext);
@@ -61,7 +61,7 @@ function CarpoolRow({
 
 	const { event } = useContext(EventContext);
 
-	const mySignup = useMySignup();
+	const mySignup = useCurrentEventSignup();
 
 	const memberLocations = useMemberLocations(carpool.members);
 
@@ -145,13 +145,15 @@ export default function Carpools() {
 				Click <EmojiPeopleIcon style={{ fontSize: '0.875rem' }} /> to request to
 				join a carpool.
 			</span>
-			{event.carpools.length>0 ? event.carpools.map((carpool) => (
-				<CarpoolRow
-					carpool={carpool}
-					key={carpool.id}
-					inCarpoolAlready={alreadyInCarpool}
-				/>
-			)) : "No Carpools"}
+			{event.carpools.length > 0
+				? event.carpools.map((carpool) => (
+						<CarpoolRow
+							carpool={carpool}
+							key={carpool.id}
+							inCarpoolAlready={alreadyInCarpool}
+						/>
+				  ))
+				: 'No Carpools'}
 		</div>
 	);
 }

src/components/Event/EventContent.tsx

@@ -0,0 +1,39 @@
+import UILink from '../UI/UILink';
+import UISecondaryBox from '../UI/UISecondaryBox';
+import UISecondaryHeader from '../UI/UISecondaryHeader';
+import EventAdminControls from './EventAdminControls';
+import EventDetails from './EventDetails';
+import {
+	useCurrentEventCreator,
+	useCurrentEventGroup,
+	useCurrentEventName,
+	useIsCurrentEventCreator,
+} from './EventHooks';
+import EventInterestForm from './EventInterestForm';
+
+export default function EventContent() {
+	const group = useCurrentEventGroup();
+	const name = useCurrentEventName();
+	const creator = useCurrentEventCreator();
+	const isEventCreator = useIsCurrentEventCreator();
+
+	return (
+		<UISecondaryBox style={{ width: '35rem', maxWidth: '100vw' }}>
+			<div style={{ textAlign: 'center' }}>
+				<UISecondaryHeader>{name}</UISecondaryHeader>
+				<span>
+					Created by {isEventCreator ? 'you' : creator.name}
+					{group && (
+						<>
+							{' '}
+							in <UILink href={`/groups/${group.id}`}>{group.name}</UILink>
+						</>
+					)}
+				</span>
+			</div>
+			<EventDetails />
+			<EventInterestForm />
+			{isEventCreator && <EventAdminControls />}
+		</UISecondaryBox>
+	);
+}

src/components/Event/EventHooks.ts

@@ -2,7 +2,41 @@ import { useContext, useDebugValue, useMemo } from 'react';
 import { useMe } from '../hooks';
 import EventContext from './EventContext';
 
-export function useSignups() {
+export function useCurrentEventId() {
+	const { event } = useContext(EventContext);
+	return useMemo(() => event.id, [event.id]);
+}
+
+export function useCurrentEventName() {
+	const { event } = useContext(EventContext);
+	return useMemo(() => event.name, [event.name]);
+}
+
+export function useCurrentEventDescription() {
+	const { event } = useContext(EventContext);
+	return useMemo(() => event.description, [event.description]);
+}
+
+export function useCurrentEventCreator() {
+	const { event } = useContext(EventContext);
+	return useMemo(() => event.creator, [event.creator]);
+}
+
+export function useCurrentEventGroup() {
+	const { event } = useContext(EventContext);
+	return useMemo(() => event.group, [event.group]);
+}
+
+export function useIsCurrentEventCreator() {
+	const creator = useCurrentEventCreator();
+	const me = useMe();
+	if (!me) {
+		return false;
+	}
+	return me.id === creator.id;
+}
+
+export function useCurrentEventSignups() {
 	const signups = useContext(EventContext).event.signups;
 
 	useDebugValue(signups);
@@ -10,8 +44,8 @@ export function useSignups() {
 	return signups;
 }
 
-export function useMySignup() {
-	const signups = useSignups();
+export function useCurrentEventSignup() {
+	const signups = useCurrentEventSignups();
 	const me = useMe() || { id: 0, name: '' };
 
 	const signup = useMemo(() => signups[me.id] ?? null, [signups, me.id]);
@@ -21,7 +55,7 @@ export function useMySignup() {
 	return signup;
 }
 
-export function useMyCarpool() {
+export function useCurrentEventCarpool() {
 	const me = useMe() || { id: 0, name: '' };
 	const { event } = useContext(EventContext);
 

src/components/Event/EventSignups.tsx

@@ -7,13 +7,13 @@ import { IEventSignup } from '../types';
 import EventCarpoolCreateButton from './EventCarpoolCreateButton';
 import EventContext from './EventContext';
 import pickLatLong from './pickLatLong';
-import { useMySignup } from './EventHooks';
+import { useCurrentEventSignup } from './EventHooks';
 
 function EventSignup({ signup }: { signup: IEventSignup }) {
 	const { user } = signup;
 	const me = useMe();
 	const { tentativeInvites, event } = useContext(EventContext);
-	const mySignup = useMySignup();
+	const mySignup = useCurrentEventSignup();
 	const myLocation = pickLatLong(mySignup);
 	const theirLocation = pickLatLong(signup);
 	const eventLocation = pickLatLong(event)!;

src/components/api.ts

@@ -113,6 +113,17 @@ export async function createEvent({
 	};
 }
 
+export async function setEventDescription(
+	eventId: number,
+	description: string
+) {
+	return await post(`/events/${eventId}/update`, { description });
+}
+
+export async function deleteEvent(eventId: number) {
+	return await delete$(`/events/${eventId}`);
+}
+
 export async function getEvents(): Promise<IEvent[]> {
 	return await get('/events');
 }

src/components/types.ts

@@ -80,6 +80,7 @@ export type IEvent = {
 			name: string;
 		}[];
 	}[];
+	description: string;
 	signups: Record<string, IEventSignup>;
 	startTime: string; // Datestring
 	duration: number;