I made a feature and it is done D:

.gitignore

@@ -0,0 +1,2 @@
+.idea
+.idea/*

website/.gitignore

@@ -4,8 +4,8 @@ node_modules
 /.svelte-kit
 /package
 .env
-.env.*
-!.env.example
+.env
+!.env
 vite.config.js.timestamp-*
 vite.config.ts.timestamp-*
 

website/src/lib/client/components/AnnouncementPopup.svelte

@@ -0,0 +1,15 @@
+<script>
+	export let announcementJson ;
+	export let announcementStyle;
+</script>
+
+<div id="background" style={announcementStyle}>
+	<div id="window">
+		<div id="title">{announcementJson['title']}</div>
+		<div id="time">{announcementJson['time']}</div>
+		<div id="content">{announcementJson['content']}</div>
+	</div>
+</div>
+
+<style>
+</style>

website/src/routes/+layout.svelte

@@ -0,0 +1,60 @@
+<script lang="js">
+	import AnnouncementPopup from '$lib/client/components/AnnouncementPopup.svelte';
+	import { onMount } from 'svelte';
+
+	let announcement;
+	let placeholder = {
+		'title': 'None',
+		'time': 'undefined',
+		'content': 'None'
+	}
+	let intervalId;
+	async function readSavedFile() {
+		const response = await fetch('api/announcements');
+		const savedAnnouncements = await response.json();
+		console.log(savedAnnouncements)
+		let date = new Date()
+		let time = date.getHours() + ':' + date.getMinutes()
+		console.log(time)
+		for (let object of savedAnnouncements) {
+			if (object['time'] === time) {
+				announcement = object;
+			}
+			else {
+				announcement = undefined
+			}
+		}
+		console.log("Read saved file!")
+	}
+
+
+	function checkForSavedFile() {
+		intervalId = setTimeout(
+			() => {
+				readSavedFile();
+				checkForSavedFile();
+			},
+			announcement ? 3000000 : 10000
+		);
+	}
+
+	function cancelTimeout() {
+		if (intervalId) {
+			clearTimeout(intervalId);
+			intervalId = undefined;
+		}
+	}
+
+	onMount(() => {
+		intervalId = setInterval(readSavedFile, 10000);
+		checkForSavedFile();
+		return cancelTimeout();
+	});
+</script>
+
+<AnnouncementPopup
+	announcementJson={announcement ? announcement: placeholder}
+	announcementStyle={announcement ? 'display:flex' : 'display:none'}
+/>
+
+<slot />

website/src/routes/Announcement/+page.server.js

@@ -0,0 +1,32 @@
+import { redirect } from '@sveltejs/kit';
+
+import fs from 'fs';
+
+import { SAVED_FOLDER_LOCATION } from '$env/static/private';
+
+export const actions = {
+	default: async ({ request }) => {
+		const data = await request.formData();
+		let upload = Object.fromEntries(data)
+
+		let fileData = []
+		if (!fs.existsSync(SAVED_FOLDER_LOCATION))
+			fs.mkdirSync(SAVED_FOLDER_LOCATION, { recursive: true });
+		if (!fs.existsSync(SAVED_FOLDER_LOCATION + 'announcements.json')) {
+			fileData.push(upload)
+			fs.appendFile(SAVED_FOLDER_LOCATION + 'announcements.json', JSON.stringify(fileData),(err) => {
+				if (err) throw err;
+			}) }
+		else {
+			let temp = fs.readFileSync(SAVED_FOLDER_LOCATION + 'announcements.json')
+			fileData.push(JSON.parse(temp))
+			fileData.push(upload)
+			fs.writeFile(SAVED_FOLDER_LOCATION + 'announcements.json', JSON.stringify(fileData), (err) => {
+				if (err) throw err;
+			})
+		}
+		throw redirect(302, '/')
+
+
+	}
+};

website/src/routes/Announcement/+page.svelte

@@ -0,0 +1,13 @@
+<div id="ann-container">
+	<form method="POST">
+		<label for="ann-title"> Titel: </label>
+		<input type="text" name="title" id="ann-title" />
+		<label for="ann-time"> Uhrzeit: </label>
+		<input type="time" name="time" id="ann-time" />
+		<label for="ann-content"> Inhalt: </label>
+		<input type="text" name="content" id="ann-content" />
+		<label for="ann-reminder"> Wann erinnern? </label>
+		<input type="text" name="reminder" id="ann-reminder" />
+		<input type="submit">
+	</form>
+</div>

website/src/routes/api/announcements/+server.js

@@ -0,0 +1,15 @@
+import fs from 'fs';
+
+import { SAVED_FOLDER_LOCATION } from '$env/static/private';
+
+export async function GET() {
+	if (!fs.existsSync(SAVED_FOLDER_LOCATION))
+		fs.mkdirSync(SAVED_FOLDER_LOCATION, { recursive: true });
+
+	if (!fs.existsSync(SAVED_FOLDER_LOCATION + 'announcements.json'))
+		return new Response({ status: 404 });
+
+	const announcementList = fs.readFileSync(SAVED_FOLDER_LOCATION + 'announcements.json');
+
+	return new Response(announcementList, { status: 200 });
+}

website/src/routes/api/serverlist/+server.js

@@ -6,7 +6,7 @@ export async function GET() {
 	if (!fs.existsSync(TEMP_FOLDER_LOCATION)) fs.mkdirSync(TEMP_FOLDER_LOCATION, { recursive: true });
 
 	if (!fs.existsSync(TEMP_FOLDER_LOCATION + 'gameserverstatus.json'))
-		return new Response({status: 404});
+		return new Response({ status: 404 });
 
 	const serverList = fs.readFileSync(TEMP_FOLDER_LOCATION + 'gameserverstatus.json');