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

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

model news {
  id         Int      @id(map: "pk_news") @default(autoincrement())
  title      String
  message    String
  is_alert   Boolean  @default(false)
  created_at DateTime @default(now())
}

model study_item {
  id         Int          @id(map: "pk_study_item") @default(autoincrement())
  title      String
  study_slot study_slot[]
}

model study_slot {
  id            Int        @id(map: "pk_study_slot") @default(autoincrement())
  study_item_id Int
  where         String
  studentsGroup String
  position      Int
  study_item    study_item @relation(fields: [study_item_id], references: [id], onDelete: Cascade, onUpdate: NoAction, map: "fk_study_slot_study_item")
  timetable     timetable? @relation(fields: [timetableId], references: [id])
  timetableId   Int?
}

model timetable {
  id        Int          @id(map: "pk_timetable") @default(autoincrement())
  day       Int          @db.SmallInt
  odd       Boolean
  slots     study_slot[]
  teacher   users        @relation(fields: [teacherId], references: [id])
  teacherId Int
}

model users {
  id       Int     @id(map: "pk_users") @default(autoincrement())
  login    String  @unique @db.VarChar(25)
  pass     String  @db.VarChar(100)
  fullName String? @db.VarChar(100)
  is_admin Boolean @default(false)
  lore     String? @db.Text()

  timetable    timetable[]
  user_session user_session[]
  chat_message chat_message[]
  user_in_chat user_in_chat[]
}

model user_session {
  id      String @id @default(uuid())
  usersId Int

  user users @relation(fields: [usersId], references: [id])
}

model chat {
  id    String @id @default(uuid())
  title String

  chat_message chat_message[]
  user_in_chat user_in_chat[]
}

model chat_message {
  id   String @id @default(uuid())
  text String

  user users @relation(fields: [userId], references: [id])
  chat chat  @relation(fields: [chatId], references: [id])

  sendAt DateTime @default(now())

  chatId String
  userId Int
}

model user_in_chat {
  id     Int    @id @default(autoincrement())
  chatId String
  userId Int

  chat chat  @relation(fields: [chatId], references: [id])
  user users @relation(fields: [userId], references: [id])
}