Make a chat app with Node JS

I want to make a chat app with react, node, socket.io, and Prisma. I am unable to add direct message (dm) functionality but added group functionality.

My Schema

datasource db {
  url      = env("DATABASE_URL")
  provider = "postgresql"
}

generator client {
  provider = "prisma-client-js"
}

model User {
  id        Int      @id @default(autoincrement())
  createdAt DateTime @default(now())
  email     String   @unique
  username  String
  password  String
  sender    Messages @relation("sender")
  receiver  Messages @relation("receiver")
}

model Group {
  id        Int        @id @default(autoincrement())
  messages  Messages[]
  user      Users[]
}

model Messages {
  id          Int     @id @default(autoincrement())
  text        String 
  group       Group   @relation(fields: [groupId], references: [id])
  groupId     Int
  sender      User    @relation("sender", fields: [senderId], references: [id])
  senderId    Int
  reciever    User    @relation("reciever", fields: [recieverId], references: [id])
  recieverId  Int
}

Comments

[Bradston Henry]

I don't have any experience with Prisma but you should be able to message a specific client in Socket using the Client's ID (which would be managed on your Node Server).

This is the socket documentation that talks about a client talking directly to a client: socket.io/docs/v4/server-socket-in...

Only think I would note is that is has become my practice to have a object that connects my Socket generated Client ID to the my custom created user IDs. That way I can always correlate the two when a client is connected to the server.

[Luis Felipe Ciochetta]

what kind of issues are you having?

have you tried to apply the same logic you use for group messages but have only two users in the room?

[Mohd Ahmad]

I have done group messages, private messages, but stuck on a part on how to check user's friends or whome he chats with