fixed duplicate check

src/server/actions/addCountry.ts

@@ -6,16 +6,19 @@ 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" }),
-});
-
 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));
+
+  const schema = z.object({
+    name: z
+      .string()
+      .min(1, { message: "Name is required" })
+      .refine(() => !exists[0], { message: "Country already exists" }),
+  });
   try {
     schema.parse({
       name,