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import React, { useEffect, useRef, useState } from 'react';
import { useDispatch, useSelector, connect } from 'react-redux';
import { useNavigate } from 'react-router-dom';
import { Snackbar } from '@mui/material';
import { devicesActions, sessionActions } from './store';
import { useEffectAsync } from './reactHelper';
import { useTranslation } from './common/components/LocalizationProvider';
import { snackBarDurationLongMs } from './common/util/duration';
import alarm from './resources/alarm.mp3';
import { eventsActions } from './store/events';
import useFeatures from './common/util/useFeatures';
import { useAttributePreference } from './common/util/preferences';
const logoutCode = 4000;
const SocketController = () => {
const dispatch = useDispatch();
const navigate = useNavigate();
const t = useTranslation();
const authenticated = useSelector((state) => !!state.session.user);
const devices = useSelector((state) => state.devices.items);
const socketRef = useRef();
const [events, setEvents] = useState([]);
const [notifications, setNotifications] = useState([]);
const soundEvents = useAttributePreference('soundEvents', '');
const soundAlarms = useAttributePreference('soundAlarms', 'sos');
const features = useFeatures();
const connectSocket = () => {
const protocol = window.location.protocol === 'https:' ? 'wss:' : 'ws:';
const socket = new WebSocket(`${protocol}//${window.location.host}/api/socket`);
socketRef.current = socket;
socket.onopen = () => {
dispatch(sessionActions.updateSocket(true));
};
socket.onclose = async (event) => {
dispatch(sessionActions.updateSocket(false));
if (event.code !== logoutCode) {
try {
const devicesResponse = await fetch('/api/devices');
if (devicesResponse.ok) {
dispatch(devicesActions.update(await devicesResponse.json()));
}
const positionsResponse = await fetch('/api/positions');
if (positionsResponse.ok) {
dispatch(sessionActions.updatePositions(await positionsResponse.json()));
}
if (devicesResponse.status === 401 || positionsResponse.status === 401) {
navigate('/login');
}
} catch (error) {
// ignore errors
}
setTimeout(() => connectSocket(), 60000);
}
};
socket.onmessage = (event) => {
const data = JSON.parse(event.data);
if (data.devices) {
dispatch(devicesActions.update(data.devices));
}
if (data.positions) {
dispatch(sessionActions.updatePositions(data.positions));
}
if (data.events) {
if (!features.disableEvents) {
dispatch(eventsActions.add(data.events));
}
setEvents(data.events);
}
};
};
useEffectAsync(async () => {
if (authenticated) {
const response = await fetch('/api/devices');
if (response.ok) {
dispatch(devicesActions.refresh(await response.json()));
} else {
throw Error(await response.text());
}
connectSocket();
return () => {
const socket = socketRef.current;
if (socket) {
socket.close(logoutCode);
}
};
}
return null;
}, [authenticated]);
useEffect(() => {
setNotifications(events.map((event) => ({
id: event.id,
message: event.attributes.message,
show: true,
})));
}, [events, devices, t]);
useEffect(() => {
events.forEach((event) => {
if (soundEvents.includes(event.type) || (event.type === 'alarm' && soundAlarms.includes(event.attributes.alarm))) {
new Audio(alarm).play();
}
});
}, [events, soundEvents, soundAlarms]);
return (
<>
{notifications.map((notification) => (
<Snackbar
key={notification.id}
open={notification.show}
message={notification.message}
autoHideDuration={snackBarDurationLongMs}
onClose={() => setEvents(events.filter((e) => e.id !== notification.id))}
/>
))}
</>
);
};
export default connect()(SocketController);
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