Made it possible to add time to a specific account as well

src/pages/api/stripe.ts

@@ -4,17 +4,18 @@ import {app} from "@/firebase";
 import {getFirestore, setDoc, doc, getDocs, query, collection, where} from "firebase/firestore";
 import {withIronSessionApiRoute} from "iron-session/next";
 import {sessionOptions} from "@/lib/session";
-import {Type} from "@/interfaces/user";
+import {Type, User} from "@/interfaces/user";
 import {PERMISSIONS} from "@/constants/userPermissions";
 import {uuidv4} from "@firebase/util";
 import {prepareMailer, prepareMailOptions} from "@/email";
 import * as Stripe from "stripe";
 import ShortUniqueId from "short-unique-id";
+import moment from "moment";
 
 const db = getFirestore(app);
 
 export default async function handler(req: NextApiRequest, res: NextApiResponse) {
-	const {email, expiryDate, key, checkout} = req.body as {email: string; expiryDate: Date; key: string; checkout: string};
+	const {email, days, key, checkout} = req.body as {email: string; days: string; key: string; checkout: string};
 	if (!key || key !== process.env.STRIPE_KEY) {
 		res.status(403).json({ok: false});
 		return;
@@ -29,8 +30,35 @@ export default async function handler(req: NextApiRequest, res: NextApiResponse)
 		return;
 	}
 
+	const emailCheckerRef = await getDocs(query(collection(db, "users"), where("email", "==", email)));
+	if (emailCheckerRef.docs.length !== 0) {
+		const user = emailCheckerRef.docs[0];
+		if (!user.data().subscriptionExpirationDate) {
+			res.status(200).json({ok: true});
+			return;
+		}
+
+		const codeUserRef = await getDocs(query(collection(db, "codes"), where("userId", "==", user.id)));
+		const userCode = codeUserRef.docs[0];
+
+		if (userCode.data().checkout && userCode.data().checkout === checkout) {
+			res.status(401).json({ok: false});
+			return;
+		}
+
+		await setDoc(
+			user.ref,
+			{subscriptionExpirationDate: moment(user.data().subscriptionExpirationDate).add(days, "days").toISOString()},
+			{merge: true},
+		);
+		await setDoc(userCode.ref, {checkout}, {merge: true});
+
+		res.status(200).json({ok: true});
+		return;
+	}
+
 	const codeRef = doc(db, "codes", code);
-	await setDoc(codeRef, {type: "student", code, expiryDate, checkout});
+	await setDoc(codeRef, {type: "student", code, expiryDate: moment(new Date()).add(days, "days").toISOString(), checkout});
 
 	const transport = prepareMailer();
 	const mailOptions = prepareMailOptions(