Created toggle for hotspot in admin settings. User needs sudo privileges.

app/src/api.js

@@ -34,7 +34,8 @@ async function apiCall(url, method, body, ms = 10000) {
         // await the response or error.
         let response = await timeoutPromise(ms, promise);
         let copy = response.clone();
-        if (response.status === 403 && (await copy.json())['code'] === 17) {
+        let code = (await copy.json())['code'];
+        if (response.status === 403 && code === 17) {
             toast({
                 type: 'error',
                 title: 'WROL Mode is enabled!',
@@ -423,3 +424,40 @@ export async function getVersion() {
     let data = await response.json();
     return data['version'];
 }
+
+export async function getDevices() {
+    let response = await apiGet(`${API_URI}/hotspot`);
+    if (response.status === 200) {
+        let {devices} = await response.json();
+        return devices;
+    } else {
+        let code = (await response.json())['code'];
+        if (response.status === 400 && code === 34) {
+            // Must not be running on a RPi.  Don't warn the user.
+            return null;
+        }
+    }
+    return null;
+}
+
+export async function setHotspot(on) {
+    let response;
+    if (on) {
+        response = await apiPost(`${API_URI}/hotspot/on`);
+    } else {
+        response = await apiPost(`${API_URI}/hotspot/off`);
+    }
+    if (response.status === 204) {
+        return null;
+    } else {
+        let code = (await response.json())['code'];
+        if (code === 34) {
+            toast({
+                type: 'error',
+                title: 'Unsupported!',
+                description: 'Hotspot is only supported on a Raspberry Pi!',
+                time: 5000,
+            });
+        }
+    }
+}

app/src/components/Admin.js

@@ -24,6 +24,22 @@ import {
 import TimezoneSelect from 'react-timezone-select';
 import {PageContainer, secondsToDate, secondsToFrequency, TabLinks, textEllipsis, WROLModeMessage} from "./Common";
 import {Route} from "react-router-dom";
+import {useHotspot} from "../hooks/customHooks";
+
+function HotspotToggle() {
+    let {on, setHotspot} = useHotspot();
+    return (
+        <>
+            <Checkbox toggle
+                      label='Toggle the WiFi Hotspot.  Only supported on Raspberry Pi.'
+                      disabled={on === null}
+                      defaultIndeterminate={on === null}
+                      checked={on === true}
+                      onChange={(e, data) => setHotspot(data.checked)}
+            />
+        </>
+    );
+}
 
 class Settings extends React.Component {
 
@@ -78,6 +94,12 @@ class Settings extends React.Component {
         return (
             <Container fluid>
                 <WROLModeMessage content='Settings are disabled because WROL Mode is enabled.'/>
+
+                <p>
+                    <HotspotToggle/>
+                </p>
+
+                <Divider/>
                 <p>
                     The global settings for your server.
                 </p>

app/src/hooks/customHooks.js

@@ -1,5 +1,14 @@
 import {useEffect, useState} from "react";
-import {fetchDomains, filesSearch, getFiles, getVersion, searchArchives, searchVideos} from "../api";
+import {
+    fetchDomains,
+    filesSearch,
+    getDevices,
+    getFiles,
+    getVersion,
+    searchArchives,
+    searchVideos,
+    setHotspot
+} from "../api";
 import {useHistory} from "react-router-dom";
 
 export const useSearchParam = (key, defaultValue = null) => {
@@ -178,3 +187,27 @@ export const useBrowseFiles = () => {
 
     return {browseFiles, openFolders, setOpenFolders, fetchFiles};
 }
+
+export const useHotspot = () => {
+    const [on, setOn] = useState(null);
+
+    const fetchDevices = async () => {
+        const devices = await getDevices();
+        if (devices && devices['wlan0']) {
+            let wlan0 = devices['wlan0'];
+            setOn(wlan0['connection'] === 'connected');
+        }
+    }
+
+    useEffect(() => {
+        fetchDevices();
+    });
+
+    const localSetHotspot = async (on) => {
+        setOn(null);
+        setHotspot(on);
+        fetchDevices();
+    }
+
+    return {on, setOn, setHotspot: localSetHotspot};
+}