diff --git a/src/pages/api/discounts/[id].ts b/src/pages/api/discounts/[id].ts
index ee3cc9c5..d83ddedd 100644
--- a/src/pages/api/discounts/[id].ts
+++ b/src/pages/api/discounts/[id].ts
@@ -1,82 +1,78 @@
 // Next.js API route support: https://nextjs.org/docs/api-routes/introduction
-import type { NextApiRequest, NextApiResponse } from "next";
+import type {NextApiRequest, NextApiResponse} from "next";
 import client from "@/lib/mongodb";
-import { withIronSessionApiRoute } from "iron-session/next";
-import { sessionOptions } from "@/lib/session";
-import { PERMISSIONS } from "@/constants/userPermissions";
+import {withIronSessionApiRoute} from "iron-session/next";
+import {sessionOptions} from "@/lib/session";
+import {PERMISSIONS} from "@/constants/userPermissions";
 
 const db = client.db(process.env.MONGODB_DB);
 
 export default withIronSessionApiRoute(handler, sessionOptions);
 
 async function handler(req: NextApiRequest, res: NextApiResponse) {
-  if (req.method === "GET") return get(req, res);
-  if (req.method === "DELETE") return del(req, res);
-  if (req.method === "PATCH") return patch(req, res);
+	if (req.method === "GET") return get(req, res);
+	if (req.method === "DELETE") return del(req, res);
+	if (req.method === "PATCH") return patch(req, res);
 }
 
 async function get(req: NextApiRequest, res: NextApiResponse) {
-  if (!req.session.user) {
-    res.status(401).json({ ok: false });
-    return;
-  }
+	if (!req.session.user) {
+		res.status(401).json({ok: false});
+		return;
+	}
 
-  const { id } = req.query as { id: string };
-  const docSnap = await db.collection("discounts").findOne({ id: id });
+	const {id} = req.query as {id: string};
+	const docSnap = await db.collection("discounts").findOne({id: id});
 
-  if (docSnap) {
-    res.status(200).json(docSnap);
-  } else {
-    res.status(404).json(undefined);
-  }
+	if (docSnap) {
+		res.status(200).json(docSnap);
+	} else {
+		res.status(404).json(undefined);
+	}
 }
 
 async function patch(req: NextApiRequest, res: NextApiResponse) {
-  if (!req.session.user) {
-    res.status(401).json({ ok: false });
-    return;
-  }
+	if (!req.session.user) {
+		res.status(401).json({ok: false});
+		return;
+	}
 
-  const { id } = req.query as { id: string };
-  const docSnap = await db.collection("discounts").findOne({ id: id });
+	const {id} = req.query as {id: string};
+	const docSnap = await db.collection("discounts").findOne({id: id});
 
-  if (docSnap) {
-    if (!["developer", "admin"].includes(req.session.user.type)) {
-      res.status(403).json({ ok: false });
-      return;
-    }
+	if (docSnap) {
+		if (!["developer", "admin"].includes(req.session.user.type)) {
+			res.status(403).json({ok: false});
+			return;
+		}
 
-    await db.collection("discounts").updateOne(
-      { id: id },
-      { $set: { id: id, ...req.body},
-      { upsert: true }
-    );
-    
-    res.status(200).json({ ok: true });
-  } else {
-    res.status(404).json({ ok: false });
-  }
+		await db.collection("discounts").updateOne({id: id}, {$set: {id: id, ...req.body}}, {upsert: true});
+
+		res.status(200).json({ok: true});
+	} else {
+		res.status(404).json({ok: false});
+	}
 }
 
 async function del(req: NextApiRequest, res: NextApiResponse) {
-  if (!req.session.user) {
-    res.status(401).json({ ok: false });
-    return;
-  }
+	if (!req.session.user) {
+		res.status(401).json({ok: false});
+		return;
+	}
 
-  const { id } = req.query as { id: string };
-  const docSnap = await db.collection("discounts").findOne({ id: id });
+	const {id} = req.query as {id: string};
+	const docSnap = await db.collection("discounts").findOne({id: id});
 
-  if (docSnap) {
-    if (!["developer", "admin"].includes(req.session.user.type)) {
-      res.status(403).json({ ok: false });
-      return;
-    }
+	if (docSnap) {
+		if (!["developer", "admin"].includes(req.session.user.type)) {
+			res.status(403).json({ok: false});
+			return;
+		}
 
-    await db.collection("discounts").deleteOne({ id: id });
+		await db.collection("discounts").deleteOne({id: id});
 
-    res.status(200).json({ ok: true });
-  } else {
-    res.status(404).json({ ok: false });
-  }
+		res.status(200).json({ok: true});
+	} else {
+		res.status(404).json({ok: false});
+	}
 }
diff --git a/src/utils/grading.be.ts b/src/utils/grading.be.ts
index d934f839..0edd0cad 100644
--- a/src/utils/grading.be.ts
+++ b/src/utils/grading.be.ts
@@ -1,23 +1,24 @@
-import { app } from "@/firebase";
-import { getFirestore, doc, getDoc } from "firebase/firestore";
-import { CEFR_STEPS } from "@/resources/grading";
-import { getUserCorporate } from "@/utils/groups.be";
-import { User } from "@/interfaces/user";
-import { Grading } from "@/interfaces";
-const db = getFirestore(app);
+import {app} from "@/firebase";
+import {getFirestore, doc, getDoc} from "firebase/firestore";
+import {CEFR_STEPS} from "@/resources/grading";
+import {getUserCorporate} from "@/utils/groups.be";
+import {User} from "@/interfaces/user";
+import {Grading} from "@/interfaces";
+import client from "@/lib/mongodb";
+
+const db = client.db(process.env.MONGODB_DB);
 
 export const getGradingSystem = async (user: User): Promise<Grading> => {
-  const snapshot = await getDoc(doc(db, "grading", user.id));
-  if (snapshot.exists()) return snapshot.data() as Grading;
+	const grading = await db.collection("grading").findOne<Grading>({id: user.id});
+	if (!!grading) return grading;
 
-  if (user.type !== "teacher" && user.type !== "student")
-    return { steps: CEFR_STEPS, user: user.id };
+	if (user.type !== "teacher" && user.type !== "student") return {steps: CEFR_STEPS, user: user.id};
 
-  const corporate = await getUserCorporate(user.id);
-  if (!corporate) return { steps: CEFR_STEPS, user: user.id };
+	const corporate = await getUserCorporate(user.id);
+	if (!corporate) return {steps: CEFR_STEPS, user: user.id};
 
-  const corporateSnapshot = await getDoc(doc(db, "grading", corporate.id));
-  if (corporateSnapshot.exists()) return corporateSnapshot.data() as Grading;
+	const corporateSnapshot = await db.collection("grading").findOne<Grading>({id: corporate.id});
+	if (!!corporateSnapshot) return corporateSnapshot;
 
-  return { steps: CEFR_STEPS, user: user.id };
+	return {steps: CEFR_STEPS, user: user.id};
 };