prisma/schema.prisma

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

datasource db {
  provider  = "postgresql"
  url       = env("POSTGRES_PRISMA_URL")
  directUrl = env("POSTGRES_URL_NON_POOLING")
}

model User {
  id        String    @id @default(cuid())
  name      String
  email     String    @unique
  createdAt DateTime  @default(now()) @map("created_at")
  updatedAt DateTime  @updatedAt @map("updated_at")
  chats     Chat[]
  message   Message[]

  @@map("user")
}

model Chat {
  id        String    @id @default(cuid())
  createdAt DateTime  @default(now()) @map("created_at")
  updatedAt DateTime  @updatedAt @map("updated_at")
  userId    String?
  mediaUrl  String
  user      User?     @relation(fields: [userId], references: [id])
  messages  Message[]

  @@map("chat")
}

model Message {
  id        String      @id @default(cuid())
  createdAt DateTime    @default(now()) @map("created_at")
  updatedAt DateTime    @updatedAt @map("updated_at")
  userId    String?
  chatId    String
  content   String
  role      MessageRole
  chat      Chat        @relation(fields: [chatId], references: [id], onDelete: Cascade)
  user      User?       @relation(fields: [userId], references: [id])

  @@map("message")
}

enum MessageRole {
  system
  user
  assistant
}