update prisma schema

prisma/schema.prisma

@@ -1,6 +1,7 @@
 generator client {
   provider        = "prisma-client-js"
   previewFeatures = ["referentialIntegrity"]
+  output          = "../.prisma/client"
 }
 
 datasource db {
@@ -13,24 +14,24 @@ model User {
   id        Int    @id @default(autoincrement())
   firstname String
   lastname  String
-  email     String
+  email     String @unique
   password  String
   posts     Post[]
-  roleId    Int
-  Role      Role   @relation(fields: [roleId], references: [id])
+  role      Role   @default(USER)
 }
 
-model Role {
-  id    Int    @id @default(autoincrement())
-  name  String
-  users User[]
+enum Role {
+  USER
+  ADMIN
 }
 
 model Post {
-  id       Int    @id @default(autoincrement())
-  title    String
-  content  String
-  image    String
-  authorId Int
-  author   User   @relation(fields: [authorId], references: [id])
+  id        Int      @id @default(autoincrement())
+  title     String
+  content   String?
+  image     String?
+  authorId  Int
+  author    User     @relation(fields: [authorId], references: [id])
+  createdAt DateTime @default(now())
+  updatedAt DateTime @updatedAt
 }