not throwing error on duplicates, but also not creating zoderror

src/server/actions/addCountry.ts

@@ -4,6 +4,7 @@ import { revalidatePath } from "next/cache";
 import { db } from "../db";
 import { countries } from "../db/schema";
 import { ZodError, z } from "zod";
+import { eq } from "drizzle-orm";
 
 const schema = z.object({
   name: z.string().min(1, { message: "Name is required" }),
@@ -11,10 +12,21 @@ const schema = z.object({
 
 export async function addCountry(prevstate: any, formData: FormData) {
   const name = formData.get("name") as string;
+  const exists = await db
+    .select({ name: countries.name })
+    .from(countries)
+    .where(eq(countries.name, name));
   try {
     schema.parse({
       name,
     });
+    if (!exists[0]) {
+      await db
+        .insert(countries)
+        .values({ name })
+        .returning({ name: countries.name });
+      revalidatePath("/");
+    }
     return {
       message: "success",
       errors: undefined,