Continued updating the code to work with entities better

src/pages/api/user.ts

@@ -7,7 +7,8 @@ import {withIronSessionApiRoute} from "iron-session/next";
 import {NextApiRequest, NextApiResponse} from "next";
 import {getPermissions, getPermissionDocs} from "@/utils/permissions.be";
 import client from "@/lib/mongodb";
-import {getGroupsForUser, getParticipantGroups} from "@/utils/groups.be";
+import {getGroupsForUser, getParticipantGroups, removeParticipantFromGroup} from "@/utils/groups.be";
+import { mapBy } from "@/utils";
 
 const auth = getAuth(adminApp);
 const db = client.db(process.env.MONGODB_DB);
@@ -41,20 +42,6 @@ async function del(req: NextApiRequest, res: NextApiResponse) {
 		return;
 	}
 
-	if (user.type === "corporate" && (targetUser.type === "student" || targetUser.type === "teacher")) {
-		const groups = await getGroupsForUser(user.id, targetUser.id);
-		await Promise.all([
-			...groups
-				.filter((x) => x.admin === user.id)
-				.map(
-					async (x) =>
-						await db.collection("groups").updateOne({id: x.id}, {$set: {participants: x.participants.filter((y: string) => y !== id)}}),
-				),
-		]);
-
-		return;
-	}
-
 	await auth.deleteUser(id);
 	await db.collection("users").deleteOne({id: targetUser.id});
 	await db.collection("codes").deleteMany({userId: targetUser.id});
@@ -62,11 +49,10 @@ async function del(req: NextApiRequest, res: NextApiResponse) {
 	await db.collection("stats").deleteMany({user: targetUser.id});
 
 	const groups = await getParticipantGroups(targetUser.id);
-	await Promise.all(
-		groups.map(
-			async (x) => await db.collection("groups").updateOne({id: x.id}, {$set: {participants: x.participants.filter((y: string) => y !== id)}}),
-		),
-	);
+		await Promise.all(
+			groups
+				.map(async (g) => await removeParticipantFromGroup(g.id, targetUser.id)),
+		);
 
 	res.json({ok: true});
 }