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

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

enum Role {
  ADMIN
  AGENT
  SERVICE
}

enum TicketStatus {
  OPEN
  IN_PROGRESS
  RESOLVED
  CLOSED
}

model User {
  id           String   @id @default(cuid())
  username     String   @unique
  email        String   @unique
  passwordHash String
  displayName  String
  role         Role     @default(AGENT)
  apiKey       String?  @unique
  createdAt    DateTime @default(now())
  updatedAt    DateTime @updatedAt

  assignedTickets Ticket[]  @relation("AssignedTickets")
  createdTickets  Ticket[]  @relation("CreatedTickets")
  comments        Comment[]
}

model Category {
  id      String   @id @default(cuid())
  name    String   @unique
  types   Type[]
  tickets Ticket[]
}

model Type {
  id         String   @id @default(cuid())
  name       String
  categoryId String
  category   Category @relation(fields: [categoryId], references: [id], onDelete: Cascade)
  items      Item[]
  tickets    Ticket[]

  @@unique([categoryId, name])
}

model Item {
  id      String   @id @default(cuid())
  name    String
  typeId  String
  type    Type     @relation(fields: [typeId], references: [id], onDelete: Cascade)
  tickets Ticket[]

  @@unique([typeId, name])
}

model Ticket {
  id         String       @id @default(cuid())
  title      String
  overview   String
  severity   Int
  status     TicketStatus @default(OPEN)
  categoryId String
  typeId     String
  itemId     String
  assigneeId String?
  createdById String

  resolvedAt DateTime?
  createdAt  DateTime  @default(now())
  updatedAt  DateTime  @updatedAt

  category  Category @relation(fields: [categoryId], references: [id])
  type      Type     @relation(fields: [typeId], references: [id])
  item      Item     @relation(fields: [itemId], references: [id])
  assignee  User?    @relation("AssignedTickets", fields: [assigneeId], references: [id])
  createdBy User     @relation("CreatedTickets", fields: [createdById], references: [id])
  comments  Comment[]
}

model Comment {
  id        String   @id @default(cuid())
  body      String
  ticketId  String
  authorId  String
  createdAt DateTime @default(now())

  ticket Ticket @relation(fields: [ticketId], references: [id], onDelete: Cascade)
  author User   @relation(fields: [authorId], references: [id])
}