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Add state-change handling to usePresence #8

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Add state-change handling to usePresence #8

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59 changes: 33 additions & 26 deletions lib/src/hooks/use-presence.ts
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Original file line number Diff line number Diff line change
@@ -1,30 +1,25 @@
import { useState, useEffect, useCallback, useMemo } from "react";
import { HereNowParameters, HereNowResponse } from "pubnub";
import { usePubNub } from "pubnub-react";
import cloneDeep from "lodash.clonedeep";
import { useState, useEffect, useCallback, useMemo } from 'react';
import { HereNowParameters, HereNowResponse } from 'pubnub';
import { usePubNub } from 'pubnub-react';
import cloneDeep from 'lodash.clonedeep';

type ChannelsOccupancy = HereNowResponse["channels"];
type ChannelsOccupancy = HereNowResponse['channels'];
type HookReturnValue = [ChannelsOccupancy, () => Promise<void>, number, Error];

export const usePresence = ({
channels,
channelGroups,
includeUUIDs,
includeState,
}: HereNowParameters = {}): HookReturnValue => {
export const usePresence = ({ channels, channelGroups, includeUUIDs, includeState }: HereNowParameters = {}): HookReturnValue => {
const pubnub = usePubNub();

const [presence, setPresence] = useState<ChannelsOccupancy>({});
const [error, setError] = useState<Error>();

const presenceValues = Object.values(presence);
const total = presenceValues.map((ch) => ch.occupancy).reduce((prev, cur) => prev + cur, 0);
const total = presenceValues.map(ch => ch.occupancy).reduce((prev, cur) => prev + cur, 0);

const options = useMemo(() => ({ channels, channelGroups, includeUUIDs, includeState }), [
channels,
channelGroups,
includeUUIDs,
includeState,
includeState
]);

const command = useCallback(async () => {
Expand All @@ -37,37 +32,49 @@ export const usePresence = ({
}, [pubnub, options]);

const handlePresence = useCallback(
(event) => {
setPresence((presence) => {
const presenceClone = cloneDeep(presence);
event => {
setPresence(pres => {
const presenceClone = cloneDeep(pres);
if (!presenceClone[event.channel]) presenceClone[event.channel] = {};
const channel = presenceClone[event.channel];

if (event.action === "join") {
if (!channel.hasOwnProperty("occupants")) channel.occupants = [];
if (event.action === 'join') {
if (!Object.prototype.hasOwnProperty.call(channel, 'occupants')) channel.occupants = [];
channel.occupancy = event.occupancy;

if (
options.includeUUIDs !== false &&
channel.hasOwnProperty("occupants") &&
!channel.occupants.find((u) => u.uuid == event.uuid)
Object.prototype.hasOwnProperty.call(channel, 'occupants') &&
!channel.occupants.find(u => u.uuid === event.uuid)
) {
const { state, uuid } = event;
channel.occupants.push({ state, uuid });
}
}

if (["leave", "timeout"].includes(event.action)) {
if (['leave', 'timeout'].includes(event.action)) {
channel.occupancy = event.occupancy;

if (
options.includeUUIDs !== false &&
channel.hasOwnProperty("occupants") &&
channel.occupants.find((u) => u.uuid == event.uuid)
Object.prototype.hasOwnProperty.call(channel, 'occupants') &&
channel.occupants.find(u => u.uuid === event.uuid)
) {
presenceClone[event.channel].occupants = channel.occupants.filter(
(u) => u.uuid !== event.uuid
);
presenceClone[event.channel].occupants = channel.occupants.filter(u => u.uuid !== event.uuid);
}
}

if (event.action === 'state-change') {
channel.occupancy = event.occupancy;
if (
options.includeUUIDs !== false &&
Object.prototype.hasOwnProperty.call(channel, 'occupants') &&
channel.occupants.find(u => u.uuid === event.uuid)
) {
const { state, uuid } = event;
const updatedUser = channel.occupants.find(u => u.uuid === uuid);
updatedUser.state = state;
channel.occupants[uuid] = updatedUser;
}
}

Expand Down