1 files changed, 132 insertions, 0 deletions
diff --git a/modern/src/SocketController.jsx b/modern/src/SocketController.jsx
new file mode 100644
index 00000000..7dd073fd
--- /dev/null
+++ b/modern/src/SocketController.jsx
@@ -0,0 +1,132 @@
+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);