re-order alot, move to bun redis, generalized

src/lib/validators/invite.ts

@@ -0,0 +1,37 @@
+const inviteRestrictions: { min: number; max: number; regex: RegExp } = {
+	min: 4,
+	max: 15,
+	regex: /^[a-zA-Z0-9]+$/,
+};
+
+export function isValidInvite(invite: string): {
+	valid: boolean;
+	error?: string;
+} {
+	if (!invite) {
+		return { valid: false, error: "" };
+	}
+
+	if (invite.length < inviteRestrictions.min) {
+		return {
+			valid: false,
+			error: `Invite code must be at least ${inviteRestrictions.min} characters long`,
+		};
+	}
+
+	if (invite.length > inviteRestrictions.max) {
+		return {
+			valid: false,
+			error: `Invite code can't be longer than ${inviteRestrictions.max} characters`,
+		};
+	}
+
+	if (!inviteRestrictions.regex.test(invite)) {
+		return {
+			valid: false,
+			error: "Invite code contains invalid characters",
+		};
+	}
+
+	return { valid: true };
+}