datasource db {
  provider = "sqlite"
}

generator client {
  provider = "prisma-client"
  output   = "./generated-client"
}

model User {
  username          String   @id @unique
  password          String
  displayName       String
  createdAt         DateTime @default(now())
  updatedAt         DateTime @updatedAt

  Session           Session[]
  UserPreferences   UserPreferences?
  Messages          Message[]
  Channels          Channel[]
}

model Session {
  id        String @id
  userId    String
  expiresAt DateTime

  user      User              @relation(references: [username], fields: [userId], onDelete: Cascade)
}

model UserPreferences {
  username            String  @id @unique
  toggleInputHotkey   String? @default("")
  toggleOutputHotkey  String? @default("")

  user                User    @relation(references: [username], fields: [username], onDelete: Cascade)
}

model Attachment {
  id              String      @id @default(uuid())
  name            String
  mimetype        String
  size            Int
  createdAt       DateTime    @default(now())

  message         MessageAttachment[]
}

model Message {
  id              String      @id @default(uuid())
  text            String
  senderUsername        String?
  createdAt       DateTime    @default(now())
  updatedAt       DateTime    @updatedAt

  sender          User?       @relation(references: [username], fields: [senderUsername], onDelete: SetNull)
  attachments     MessageAttachment[]
}

model MessageAttachment {
  messageId       String
  attachmentId    String

  message         Message    @relation(fields: [messageId], references: [id])
  attachment      Attachment @relation(fields: [attachmentId], references: [id])

  @@id([messageId, attachmentId])
}

model Channel {
  id              String      @id @default(uuid())
  ownerUsername   String?
  name            String
  persistent      Boolean

  owner           User?        @relation(references: [username], fields: [ownerUsername], onDelete: Cascade)
}