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[EDU-1664] - Chat Online status example #2302

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This PR contains the two code samples for the new Examples section we are creating. It contains a Typescript and a React version for Online status with Chat. Which will be rendered in the code sandbox live examples in the future, along with others.

The README within each directory /examples/chat-online-status/javascript and /examples/chat-online-status/react contains information on how to get these running.

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@GregHolmes GregHolmes self-assigned this Nov 7, 2024
@ably-ci ably-ci temporarily deployed to ably-docs-edu-1664-exam-1t0vwu November 7, 2024 10:57 Inactive
@GregHolmes GregHolmes changed the base branch from main to EDU-1541-DevJourney-Examples November 7, 2024 10:57
@GregHolmes GregHolmes force-pushed the EDU-1541-DevJourney-Examples branch from 825ca88 to 6fe6a8d Compare November 11, 2024 10:13
@GregHolmes GregHolmes force-pushed the EDU-1664-Example-Chat-Online-indicator branch from 28d7fe0 to 984c06e Compare November 13, 2024 09:48
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@m-hulbert m-hulbert left a comment

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I think we should make the 'away' indicator yellow rather than grey, as grey is normally for offline. Thoughts?

examples/chat-online-status/javascript/index.html Outdated Show resolved Hide resolved
examples/chat-online-status/javascript/index.html Outdated Show resolved Hide resolved
examples/chat-online-status/page.md Outdated Show resolved Hide resolved
examples/chat-online-status/page.md Outdated Show resolved Hide resolved
examples/chat-online-status/page.md Outdated Show resolved Hide resolved
examples/chat-online-status/page.md Outdated Show resolved Hide resolved
@GregHolmes GregHolmes force-pushed the EDU-1664-Example-Chat-Online-indicator branch 2 times, most recently from 747e29c to 472abaa Compare November 13, 2024 14:05
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Didn't notice it before, but we should have a (You) label against your own entry.

Can we make the button fixed width too, so that it doesn't resize when you change your status?

@GregHolmes GregHolmes force-pushed the EDU-1541-DevJourney-Examples branch from 7557ab1 to 470606c Compare November 15, 2024 13:25
@GregHolmes GregHolmes force-pushed the EDU-1664-Example-Chat-Online-indicator branch 3 times, most recently from e6d2e7b to 65de162 Compare November 20, 2024 09:10
@GregHolmes GregHolmes requested a review from m-hulbert November 20, 2024 09:11
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You just need to add an entry for the usePresence hook in page.md but everything else LGTM

@GregHolmes GregHolmes force-pushed the EDU-1541-DevJourney-Examples branch from d8479e6 to 66f68fe Compare November 22, 2024 13:39
@GregHolmes GregHolmes force-pushed the EDU-1664-Example-Chat-Online-indicator branch 3 times, most recently from 73fde35 to 7f6aec9 Compare November 22, 2024 14:50
@GregHolmes GregHolmes force-pushed the EDU-1541-DevJourney-Examples branch 2 times, most recently from ce90cf7 to fb70c3c Compare December 6, 2024 09:27
@GregHolmes GregHolmes force-pushed the EDU-1664-Example-Chat-Online-indicator branch from 7f6aec9 to 8c4d5ef Compare December 6, 2024 12:09
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Just a few small things, otherwise it looks good!

// Get ROOM with typing capabilities
const room = chatClient.rooms.get('chat-online-status', { presence: RoomOptionsDefaults.presence });

const onlineStatuses = await room.presence.get();
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We don't normally have awaits at the top level of a file, is this common practice in examples for simplicity? If there is a need for this, perhaps update the module to ECMAScript 2022?

const card = document.createElement('div');
card.className =
'flex items-center p-4 bg-gray-100 rounded-lg shadow-sm hover:shadow-md transition-shadow duration-200';
card.id = onlineStatus.clientId;
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There is a possibility of name collision here. Probably small, so maybe it's not an issue to worry about, but I'd double-check the randomness of fakers firstName() function, just ensure it's a big enough dataset that the chance is low


const onlineStatuses = await room.presence.get();

async function addCard(onlineStatus: PresenceMember | PresenceEvent) {
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It might be worth some small comments here to separate the code maybe? e.g..

// Create an element to store status items
const card = document.createElement('div');
card.className =
  'flex items-center p-4 bg-gray-100 rounded-lg shadow-sm hover:shadow-md transition-shadow duration-200';
card.id = onlineStatus.clientId;

// Create an element to store status data..

}

onlineStatuses.forEach((onlineStatus: PresenceMember) => {
addCard(onlineStatus);
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Is it necessary that these populate before you subscribe to presence? It looks like addCard is async, but I can't see anything there that requires awaiting?

/** 💡 Subscribe to the presence set of the room to see online statuses 💡 */
room.presence.subscribe((event: PresenceEvent) => {
if (event.action === 'enter') {
addCard(event);
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Same here, it looks like we could just make this sync?

const Online = () => {
const [onlineStatuses, setOnlineStatuses] = useState<PresenceEvent[]>([]);
const { presenceData, error } = usePresenceListener({
listener: (presence) => {
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@splindsay-92 splindsay-92 Dec 12, 2024

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listener: (event: PresenceEvent)


const Online = () => {
const [onlineStatuses, setOnlineStatuses] = useState<PresenceEvent[]>([]);
const { presenceData, error } = usePresenceListener({
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Seems error isn't used?

const { presenceData, error } = usePresenceListener({
listener: (presence) => {
if (presence.action === 'enter') {
setOnlineStatuses((prevStatus: PresenceEvent[]) => [...prevStatus, presence as PresenceEvent]);
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You can now remove

 as PresenceEvent

if (presence.action === 'enter') {
setOnlineStatuses((prevStatus: PresenceEvent[]) => [...prevStatus, presence as PresenceEvent]);
} else if (presence.action === 'leave') {
setOnlineStatuses((prevStatus: PresenceEvent[]) => prevStatus.filter((status: PresenceEvent) => status.clientId !== presence.clientId));
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Does presence.action === 'update' need to be handled here? Also, if so, could we turn this into a switch? :)

const { clientId } = useChatClient();

useEffect(() => {
if (presenceData) {
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Is the idea to show both methods to retrieve presence data? I'm not sure what the docs look like, but this could be confusing? Perhaps just use one and console log the other? Also maybe some comments to let the user know that both methods are valid and shown for demonstration?

@GregHolmes GregHolmes force-pushed the EDU-1541-DevJourney-Examples branch from fb70c3c to ef141a1 Compare December 16, 2024 09:28
Base automatically changed from EDU-1541-DevJourney-Examples to main December 16, 2024 09:35
@GregHolmes GregHolmes force-pushed the EDU-1664-Example-Chat-Online-indicator branch from 8c4d5ef to 9f1e202 Compare December 16, 2024 09:40
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4 participants