diff --git a/app.vue b/app.vue
index 01ecf93..633b78f 100644
--- a/app.vue
+++ b/app.vue
@@ -7,27 +7,27 @@
 </template>
 
 <script setup>
-	useHead({
-		title: "Stundenplan",
-		meta: [
-			{
-				name: "description",
-				content: "Einfache, mobile-first WebApp für den CampusDual-Stundenplan. Support für Firefox und Chromium.",
-			},
-		],
-	});
+useHead({
+	title: "Stundenplan",
+	meta: [
+		{
+			name: "description",
+			content: "Einfache, mobile-first WebApp für den CampusDual-Stundenplan. Support für Firefox und Chromium.",
+		},
+	],
+});
 
-	const username = useCookie("username");
-	const password = useCookie("password");
-	const isLoggedIn = useState("isLoggedIn", () => false);
+const username = useCookie("username");
+const password = useCookie("password");
+const isLoggedIn = useState("isLoggedIn", () => false);
 
-	onMounted(async () => {
-		try {
-			const test_url = `https://corsproxy.io/?https%3A%2F%2Fselfservice.campus-dual.de%2Fdash%2Fgetcp%3Fuser%3D${username.value}%26hash%3D${password.value}`;
-			const response = await $fetch(test_url);
-			isLoggedIn.value = !!(response == 0);
-		} catch (error) {
-			isLoggedIn.value = false;
-		}
-	});
+onMounted(async () => {
+	try {
+		const test_url = `https://corsproxy.io/?https%3A%2F%2Fselfservice.campus-dual.de%2Fdash%2Fgetcp%3Fuser%3D${username.value}%26hash%3D${password.value}`;
+		const response = await $fetch(test_url);
+		isLoggedIn.value = !!(typeof response === 'number');
+	} catch (error) {
+		isLoggedIn.value = false;
+	}
+});
 </script>
diff --git a/composables/useCampus.ts b/composables/useCampus.ts
new file mode 100644
index 0000000..58e3af1
--- /dev/null
+++ b/composables/useCampus.ts
@@ -0,0 +1,43 @@
+import { ref } from 'vue';
+
+const baseCampusURL = "https://selfservice.campus-dual.de"
+const baseCorsUrl = "https://corsproxy.io/?"
+
+export function useCampus() {
+    const username = useCookie("username");
+    const password = useCookie("password");
+
+    async function getCampusData(type: 'room' | 'timeline' | 'credits' | 'semester') {
+
+        const UrlParams = `?userid=${username.value}&hash=${password.value}&t=${Math.floor(Date.now() / 1000)}&_=${Date.now()}`
+
+        switch (type) {
+
+            case 'room':
+                var urlPath = "/room/json"
+                break;
+            case 'timeline':
+                var urlPath = "/dash/gettimeline"
+                break;
+            case 'credits':
+                var urlPath = "/dash/getcp"
+                break;
+            case 'semester':
+                var urlPath = "/dash/getfs"
+                break;
+
+            default:
+                throw new Error('Invalid type');
+        }
+
+        const url = baseCorsUrl + encodeURIComponent(baseCampusURL + urlPath + UrlParams)
+
+        return await $fetch(url);
+    }
+
+    return {
+        username,
+        password,
+        getCampusData
+    };
+}
\ No newline at end of file
diff --git a/middleware/isLoggedIn.global.ts b/middleware/isLoggedIn.global.ts
index a9eaeb3..d1cabf8 100644
--- a/middleware/isLoggedIn.global.ts
+++ b/middleware/isLoggedIn.global.ts
@@ -17,7 +17,7 @@ export default defineNuxtRouteMiddleware(async (to, from) => {
 		try {
 			const test_url = `https://corsproxy.io/?https%3A%2F%2Fselfservice.campus-dual.de%2Fdash%2Fgetcp%3Fuser%3D${username.value}%26hash%3D${password.value}`
 			const response = await $fetch(test_url)
-			isLoggedIn.value = !!(response == 0)
+			isLoggedIn.value = !!(typeof response === 'number')
 		} catch (error) {
 			isLoggedIn.value = false
 		}
diff --git a/pages/dash/stundenplan.vue b/pages/dash/stundenplan.vue
index 2ee90ca..17828ee 100644
--- a/pages/dash/stundenplan.vue
+++ b/pages/dash/stundenplan.vue
@@ -42,6 +42,8 @@ definePageMeta({
 	key: route => route.fullPath,
 });
 
+const { getCampusData } = useCampus()
+
 const router = useRouter();
 
 const localData = ref([]);
@@ -117,14 +119,23 @@ onMounted(async () => {
 		localStorage.setItem('stundenplan', JSON.stringify(newValue));
 	}, { deep: true });
 
+	const response = await getCampusData('room');
 
+	function arraysEqual(a, b) {
+		if (a === b) return true;
+		if (a == null || b == null) return false;
+		if (a.length !== b.length) return false;
 
-	const response = await $fetch(
-		`https://corsproxy.io/?https%3A%2F%2Fselfservice.campus-dual.de%2Froom%2Fjson%3Fuserid%3D${username.value}%26hash%3D${password.value}%26t%3D${Math.floor(Date.now() / 1000)}%26_%3D${Date.now()}`
-	);
+		for (var i = 0; i < a.length; ++i) {
+			if (JSON.stringify(a[i]) !== JSON.stringify(b[i])) return false;
+		}
+		return true;
+	}
 
-	data.value = response;
-	localData.value = data.value;
+	if (!arraysEqual(JSON.parse(JSON.stringify(localData.value)), response)) {
+		data.value = response;
+		localData.value = data.value;
+	}
 
 	hasLoaded.value = true;
 });
diff --git a/pages/login.vue b/pages/login.vue
index 3ff2fa4..50d844c 100644
--- a/pages/login.vue
+++ b/pages/login.vue
@@ -8,27 +8,16 @@
 		</div>
 	</div>
 	<div class="flex flex-col space-y-5 max-w-md p-4">
-		<input
-			type="text"
-			name="username"
-			id="username"
-			placeholder="Username"
-			v-model="username"
-			:class="{ 'border-red-500': !usernameValid }"
-			class="p-2 border rounded" />
+		<input type="text" name="username" id="username" placeholder="Username" v-model="username"
+			:class="{ 'border-red-500': !usernameValid }" class="p-2 border rounded" />
 		<p v-if="!usernameValid" class="text-red-500 text-sm">Bitte geben Sie einen Benutzernamen ein.</p>
 
-		<input
-			type="password"
-			name="Hash"
-			id="hash"
-			placeholder="Passwort (Hash)"
-			v-model="password"
-			:class="{ 'border-red-500': !passwordValid }"
-			class="p-2 border rounded" />
+		<input type="password" name="Hash" id="hash" placeholder="Passwort (Hash)" v-model="password"
+			:class="{ 'border-red-500': !passwordValid }" class="p-2 border rounded" />
 		<p v-if="!passwordValid" class="text-red-500 text-sm">Bitte geben Sie ein Passwort ein.</p>
 
-		<UButton @click="login" :loading="isLoading && !error" class="p-3 bg-primary text-text rounded block">Login</UButton>
+		<UButton @click="login" :loading="isLoading && !error" class="p-3 bg-primary text-text rounded block">Login
+		</UButton>
 
 		<p v-if="error" class="text-red-500 text-sm">
 			Der Login ist fehlgeschlagen. Überprüfe ob du tatsächlich deinen aktuellen Hash von der CampusDual API hast.
@@ -37,48 +26,48 @@
 </template>
 
 <script setup>
-	const router = useRouter();
+const router = useRouter();
 
-	const username = ref("");
-	const password = ref("");
-	const usernameValid = ref(true);
-	const passwordValid = ref(true);
+const username = ref("");
+const password = ref("");
+const usernameValid = ref(true);
+const passwordValid = ref(true);
 
-	const isLoading = ref(false);
-	const error = ref(false);
+const isLoading = ref(false);
+const error = ref(false);
 
-	const usernameCookie = useCookie("username", { expires: new Date(Date.now() + 90 * 24 * 60 * 60 * 1000) });
-	const passwordCookie = useCookie("password", { expires: new Date(Date.now() + 90 * 24 * 60 * 60 * 1000) });
+const usernameCookie = useCookie("username", { expires: new Date(Date.now() + 90 * 24 * 60 * 60 * 1000) });
+const passwordCookie = useCookie("password", { expires: new Date(Date.now() + 90 * 24 * 60 * 60 * 1000) });
 
-	async function login() {
-		isLoading.value = true;
+async function login() {
+	isLoading.value = true;
 
-		usernameValid.value = username.value !== "";
-		passwordValid.value = password.value !== "";
+	usernameValid.value = username.value !== "";
+	passwordValid.value = password.value !== "";
 
-		if (!usernameValid.value || !passwordValid.value) {
-			return;
-		}
+	if (!usernameValid.value || !passwordValid.value) {
+		return;
+	}
 
-		const test_url = `https://corsproxy.io/?https%3A%2F%2Fselfservice.campus-dual.de%2Fdash%2Fgetcp%3Fuser%3D${username.value}%26hash%3D${password.value}`;
-		const response = await $fetch(test_url);
+	const test_url = `https://corsproxy.io/?https%3A%2F%2Fselfservice.campus-dual.de%2Fdash%2Fgetcp%3Fuser%3D${username.value}%26hash%3D${password.value}`;
+	const response = await $fetch(test_url);
 
-		if (response == 0) {
-			usernameCookie.value = username.value;
-			passwordCookie.value = password.value;
-			return router.push("/dash/stundenplan");
-		}
-		error.value = true;
-		isLoading.value = false;
+	if (typeof response === 'number') {
+		usernameCookie.value = username.value;
+		passwordCookie.value = password.value;
+		return router.push("/dash/stundenplan");
 	}
+	error.value = true;
+	isLoading.value = false;
+}
 </script>
 
 <style scoped>
-	.border-red-500 {
-		border-color: #f56565;
-	}
+.border-red-500 {
+	border-color: #f56565;
+}
 
-	.text-red-500 {
-		color: #f56565;
-	}
+.text-red-500 {
+	color: #f56565;
+}
 </style>