Autoban on repeated FC + admin FC search Closes #2024

app/features/user-page/UserRepository.server.ts

@@ -253,6 +253,15 @@ export function findByCustomUrl(customUrl: string) {
 		.executeTakeFirst();
 }
 
+export function findByFriendCode(friendCode: string) {
+	return db
+		.selectFrom("UserFriendCode")
+		.innerJoin("User", "User.id", "UserFriendCode.userId")
+		.select([...COMMON_USER_FIELDS])
+		.where("UserFriendCode.friendCode", "=", friendCode)
+		.execute();
+}
+
 export function findBannedStatusByUserId(userId: number) {
 	return db
 		.selectFrom("User")
@@ -553,6 +562,36 @@ export async function currentFriendCodeByUserId(userId: number) {
 		.executeTakeFirst();
 }
 
+let cachedFriendCodes: Set<string> | null = null;
+
+export async function allCurrentFriendCodes() {
+	if (cachedFriendCodes) {
+		return cachedFriendCodes;
+	}
+
+	const allFriendCodes = await db
+		.selectFrom("UserFriendCode")
+		.select(["UserFriendCode.friendCode", "UserFriendCode.userId"])
+		.orderBy("UserFriendCode.createdAt desc")
+		.execute();
+
+	const seenUserIds = new Set<number>();
+	const friendCodes = new Set<string>();
+
+	for (const row of allFriendCodes) {
+		if (seenUserIds.has(row.userId)) {
+			continue;
+		}
+
+		seenUserIds.add(row.userId);
+		friendCodes.add(row.friendCode);
+	}
+
+	cachedFriendCodes = friendCodes;
+
+	return friendCodes;
+}
+
 export async function inGameNameByUserId(userId: number) {
 	return (
 		await db
@@ -564,6 +603,8 @@ export async function inGameNameByUserId(userId: number) {
 }
 
 export function insertFriendCode(args: TablesInsertable["UserFriendCode"]) {
+	cachedFriendCodes?.add(args.friendCode);
+
 	return db.insertInto("UserFriendCode").values(args).execute();
 }