TicketingSystem/server/prisma/schema.prisma

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[]
  auditLogs       AuditLog[]
}

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())
  displayId   String       @unique @default(dbgenerated("concat('V', (floor(random() * 900000000) + 100000000)::bigint::text)"))
  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[]
  auditLogs AuditLog[]
}

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])
}

model AuditLog {
  id        String   @id @default(cuid())
  ticketId  String
  userId    String
  action    String
  detail    String?
  createdAt DateTime @default(now())

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