friends system

prisma/schema.prisma

@@ -3,7 +3,6 @@
 
 generator client {
   provider = "prisma-client-js"
-  output   = "../node_modules/.prisma/client"
 }
 
 datasource db {
@@ -43,5 +42,44 @@ model User {
   /// Timestamp of last login
   lastLoginAt DateTime? @map("last_login_at")
 
+  sentFriendRequests     FriendRequest[] @relation("SentFriendRequests")
+  receivedFriendRequests FriendRequest[] @relation("ReceivedFriendRequests")
+  userFriendships        Friendship[]    @relation("UserFriendships")
+  friendFriendships      Friendship[]    @relation("FriendFriendships")
+
   @@map("users")
 }
+
+model FriendRequest {
+  id         String              @id @default(uuid())
+  senderId   String              @map("sender_id")
+  receiverId String              @map("receiver_id")
+  status     FriendRequestStatus @default(PENDING)
+  createdAt  DateTime            @default(now()) @map("created_at")
+  updatedAt  DateTime            @updatedAt @map("updated_at")
+
+  sender   User @relation("SentFriendRequests", fields: [senderId], references: [id], onDelete: Cascade)
+  receiver User @relation("ReceivedFriendRequests", fields: [receiverId], references: [id], onDelete: Cascade)
+
+  @@unique([senderId, receiverId])
+  @@map("friend_requests")
+}
+
+model Friendship {
+  id        String   @id @default(uuid())
+  userId    String   @map("user_id")
+  friendId  String   @map("friend_id")
+  createdAt DateTime @default(now()) @map("created_at")
+
+  user   User @relation("UserFriendships", fields: [userId], references: [id], onDelete: Cascade)
+  friend User @relation("FriendFriendships", fields: [friendId], references: [id], onDelete: Cascade)
+
+  @@unique([userId, friendId])
+  @@map("friendships")
+}
+
+enum FriendRequestStatus {
+  PENDING
+  ACCEPTED
+  DENIED
+}