feat(chat): added desktop notifications

src/pages/chat/components/ChatNavIcon.tsx

@@ -2,37 +2,76 @@ import {ActionIcon, Indicator} from "@mantine/core";
 import {Link, useMatch} from "react-router-dom";
 import {IconMessageCircle} from "@tabler/icons-react";
 import {usePB} from "@/lib/pocketbase.tsx";
-import {useState} from "react";
+import {useEffect, useState} from "react";
 import {useTimeout} from "@mantine/hooks";
 import {MessagesModel} from "@/models/MessageTypes.ts";
+import {APP_NAME, APP_URL} from "../../../../config.ts";
+
+/**
+ * Parse HTML string and return text content
+ * @param html - HTML string
+ */
+const parseHtmlString = (html: string): string => {
+    const parser = new DOMParser();
+    const doc = parser.parseFromString(html, 'text/html');
+    return doc.body.textContent || '';
+}
+
+const sendDesktopNotification = (body: string, url: string) => {
+    if ("Notification" in window && Notification.permission === 'granted') {
+        const notification = new Notification(APP_NAME, {
+            body: body,
+            icon: `${APP_URL}/stuve-logo.svg`,
+            vibrate: [200, 100, 200],
+            data: {url: url}
+        })
+        notification.onclick = () => {
+            window.focus()
+            window.open(notification.data.url);
+        }
+    }
+}
 
 export default function ChatNavIcon() {
 
-    const [newMessage, setNewMessage] = useState<string | null>(null);
-    const {start} = useTimeout(() => setNewMessage(null), 5000);
+    const [notificationUrl, setNotificationUrl] = useState<string | null>(null);
+    const {start} = useTimeout(() => setNotificationUrl(null), 5000);
 
     const {user, useSubscription} = usePB()
 
     const match = useMatch("/chat/:listId")
 
+    useEffect(() => {
+        // Request notification permission on component mount
+        if ("Notification" in window && Notification.permission !== 'granted') {
+            Notification.requestPermission().then(() => {
+                sendDesktopNotification(
+                    "Willkommen bei StuVe! Du kannst jetzt Desktop Benachrichtigungen erhalten.",
+                    `${APP_URL}/chat`
+                )
+            })
+        }
+    }, [])
+
     useSubscription<MessagesModel>({
         idOrName: "messages",
         topic: "*",
         callback: (event) => {
             if (event.action == "create") {
-                if (event.record.isAnnouncement) {
-                    start()
-                    setNewMessage("announcements")
-                } else if (
-                    event.record.eventList
-                    &&
-                    match?.params.listId !== event.record.eventList // check if chat page is not already open
-                    &&
-                    event.record.sender !== user?.id // check if sender is not the user
-                ) {
-                    start()
-                    setNewMessage(event.record.eventList)
+                // check if chat page is not already open and if sender is not the user
+                if (match?.params.listId === event.record.eventList && event.record.sender === user?.id) {
+                    return
                 }
+
+                const notificationUrl = `/chat/${event.record.isAnnouncement ? "announcements" : event.record.eventList}`
+
+                setNotificationUrl(notificationUrl)
+                start()
+
+                sendDesktopNotification(
+                    parseHtmlString(event.record.content),
+                    `${APP_URL}${notificationUrl}`
+                )
             }
         }
     })
@@ -42,12 +81,12 @@ export default function ChatNavIcon() {
     }
 
     return <>
-        <Indicator inline processing disabled={newMessage === null} classNames={{
+        <Indicator inline processing disabled={notificationUrl === null} classNames={{
             root: "stack"
         }}>
             <ActionIcon
                 component={Link}
-                to={`/chat${newMessage ? `/${newMessage}` : ""}`}
+                to={notificationUrl ?? "/chat"}
                 variant={"transparent"}
                 color={"gray"}
             >