Added Account Dublicate fucntion, improved default sorts

apps/hub/app/(app)/admin/user/action.ts

@@ -2,6 +2,7 @@
 import { prisma, Prisma } from "@repo/db";
 import bcrypt from "bcryptjs";
 import { sendMailByTemplate } from "../../../../helper/mail";
+import { getServerSession } from "api/auth/[...nextauth]/auth";
 
 export const getUser = async (where: Prisma.UserWhereInput) => {
 	return await prisma.user.findMany({
@@ -82,3 +83,52 @@ export const sendVerificationLink = async (userId: string) => {
 		code,
 	});
 };
+
+export const markDuplicate = async (params: {
+	duplicateUserId: string;
+	canonicalPublicId: string;
+	reason?: string;
+}) => {
+	// Then in your function:
+	const session = await getServerSession();
+	if (!session?.user) throw new Error("Nicht authentifiziert");
+	const canonical = await prisma.user.findUnique({
+		where: { publicId: params.canonicalPublicId },
+		select: { id: true },
+	});
+	if (!canonical) throw new Error("Original-Account (canonical) nicht gefunden");
+	if (canonical.id === params.duplicateUserId)
+		throw new Error("Duplikat und Original dürfen nicht identisch sein");
+
+	const updated = await prisma.user.update({
+		where: { id: params.duplicateUserId },
+		data: {
+			canonicalUserId: canonical.id,
+			isBanned: true,
+			duplicateDetectedAt: new Date(),
+			duplicateReason: params.reason ?? undefined,
+		},
+	});
+
+	await prisma.penalty.create({
+		data: {
+			userId: params.duplicateUserId,
+			type: "BAN",
+			reason: `Account als Duplikat von #${params.canonicalPublicId} markiert.`,
+			createdUserId: session.user.id,
+		},
+	});
+	return updated;
+};
+
+export const clearDuplicateLink = async (duplicateUserId: string) => {
+	const updated = await prisma.user.update({
+		where: { id: duplicateUserId },
+		data: {
+			canonicalUserId: null,
+			duplicateDetectedAt: null,
+			duplicateReason: null,
+		},
+	});
+	return updated;
+};