prisma and mongodb setup.

added note model , mongo db env setup with cluster

.gitignore

@@ -35,4 +35,6 @@ yarn-error.log*
 *.tsbuildinfo
 next-env.d.ts
 
-.env
+.env
+
+

prisma/schema.prisma

@@ -0,0 +1,23 @@
+// This is your Prisma schema file,
+// learn more about it in the docs: https://pris.ly/d/prisma-schema
+
+generator client {
+  provider = "prisma-client-js"
+}
+
+datasource db {
+  provider = "mongodb"
+  url      = env("DATABASE_URL")
+}
+
+
+model Note {
+  id        String  @id @default(auto()) @map("_id") @db.ObjectId
+  title     String
+  content   String?
+  userId    String
+  createdAt DateTime @default(now())
+  updatedAt DateTime @updatedAt
+
+  @@map("notes") 
+}

src/lib/db/prisma.ts

@@ -0,0 +1,17 @@
+import { PrismaClient } from "@prisma/client";
+
+const prismaClientSingleton = () => {
+  return new PrismaClient();
+};
+
+type PrismaClientSingleton = ReturnType<typeof prismaClientSingleton>;
+
+const globalForPrisma = globalThis as unknown as {
+  prisma: PrismaClientSingleton | undefined;
+};
+
+const prisma = globalForPrisma.prisma ?? prismaClientSingleton();
+
+export default prisma;
+
+if (process.env.NODE_ENV !== "production") globalForPrisma.prisma = prisma;