generator client {
  provider             = "prisma-client-py"
  interface            = "asyncio"
  recursive_type_depth = 5
}

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

enum TicketStatus {
  OPEN
  IN_PROGRESS
  CLOSED
}

enum UserType {
  AUTHOR
  HELPER
  OTHER
}

model User {
  id       Int     @id @unique @default(autoincrement())
  slackId  String  @unique
  username String? @unique
  admin    Boolean @default(false)

  openedTickets   Ticket[] @relation("OpenedTickets")
  closedTickets   Ticket[] @relation("ClosedTickets")
  assignedTickets Ticket[] @relation("AssignedTickets")
  reopenedTickets Ticket[] @relation("ReopenedTickets")

  tagSubscriptions UserTagSubscription[]
  createdCategoryTags CategoryTag[] @relation("CreatedCategoryTags")
  helper           Boolean               @default(false)

  createdAt DateTime @default(now())
}

model Ticket {
  id          Int          @id @unique @default(autoincrement())
  title       String
  description String
  status      TicketStatus @default(OPEN)

  // TS for the original help message (top of the help thread)
  msgTs    String @unique
  // TS for the ticket message in the "backend" tickets channel
  ticketTs String @unique

  // Messages sent by the bot in the help thread
  userFacingMsgs BotMessage[]

  lastMsgAt DateTime? @default(now())
  lastMsgBy UserType? @default(AUTHOR)

  openedBy   User @relation("OpenedTickets", fields: [openedById], references: [id])
  openedById Int

  reopenedBy   User?     @relation("ReopenedTickets", fields: [reopenedById], references: [id])
  reopenedById Int?
  reopenedAt   DateTime?

  closedBy   User?     @relation("ClosedTickets", fields: [closedById], references: [id])
  closedById Int?
  closedAt   DateTime?

  assignedTo   User?     @relation("AssignedTickets", fields: [assignedToId], references: [id])
  assignedToId Int?
  assignedAt   DateTime?

  tagsOnTickets TagsOnTickets[]
  questionTag   QuestionTag?    @relation("QuestionTagTickets", fields: [questionTagId], references: [id])
  questionTagId Int?

  categoryTag   CategoryTag?    @relation("CategoryTagTickets", fields: [categoryTagId], references: [id])
  categoryTagId Int?

  createdAt DateTime @default(now())
}

model QuestionTag {
  id        Int      @id @unique @default(autoincrement())
  label     String   @unique
  tickets   Ticket[] @relation("QuestionTagTickets")
  createdAt DateTime @default(now())
}

// These tags are team tags
model Tag {
  id   Int    @id @unique @default(autoincrement())
  name String @unique

  ticketsOnTags TagsOnTickets[]

  userSubscriptions UserTagSubscription[]
  createdAt         DateTime              @default(now())
}

model TagsOnTickets {
  ticket   Ticket @relation(fields: [ticketId], references: [id], onDelete: Cascade)
  ticketId Int
  tag      Tag    @relation(fields: [tagId], references: [id], onDelete: Cascade)
  tagId    Int

  assignedAt DateTime @default(now())

  @@id([ticketId, tagId])
  @@map("tags_on_tickets")
}

model UserTagSubscription {
  user   User @relation(fields: [userId], references: [id], onDelete: Cascade)
  userId Int
  tag    Tag  @relation(fields: [tagId], references: [id], onDelete: Cascade)
  tagId  Int

  subscribedAt DateTime @default(now())

  @@id([userId, tagId])
  @@map("user_tag_subscriptions")
}

model BotMessage {
  id        Int    @id @unique @default(autoincrement())
  ts        String
  channelId String
  ticket    Ticket @relation(fields: [ticketId], references: [id], onDelete: Cascade)
  ticketId  Int

  @@unique([ts, channelId])
}

model CategoryTag {
  id        Int      @id @unique @default(autoincrement())
  name      String   @unique
  tickets   Ticket[] @relation("CategoryTagTickets")

  createdBy   User?     @relation("CreatedCategoryTags", fields: [createdById], references: [id])
  createdById Int?

  createdAt DateTime @default(now())
}