// FieldOps — initial scaffold schema.
//
// All models except Tenant carry tenantId. Tenant scoping is enforced at runtime
// by the Prisma extension in src/tenant-extension.ts — see that file's header for
// the operations it covers and (more importantly) those it does NOT.

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

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

enum UserRole {
  ADMIN
  SUPERVISOR
  OPERATOR
}

enum MaintenanceRequestStatus {
  OPEN
  CLAIMED
  RESOLVED
}

model Tenant {
  id        String   @id @default(cuid())
  name      String
  createdAt DateTime @default(now())

  users               User[]
  workstations        Workstation[]
  events              DomainEvent[]
  maintenanceRequests MaintenanceRequest[]
}

model User {
  id           String   @id @default(cuid())
  tenantId     String
  email        String
  passwordHash String?
  role         UserRole @default(OPERATOR)
  createdAt    DateTime @default(now())

  tenant Tenant @relation(fields: [tenantId], references: [id], onDelete: Cascade)

  reportedRequests MaintenanceRequest[] @relation("reported")
  claimedRequests  MaintenanceRequest[] @relation("claimed")
  resolvedRequests MaintenanceRequest[] @relation("resolved")

  @@unique([tenantId, email])
  @@index([tenantId])
}

model Workstation {
  id       String @id @default(cuid())
  tenantId String
  code     String
  name     String
  area     String

  tenant              Tenant               @relation(fields: [tenantId], references: [id], onDelete: Cascade)
  maintenanceRequests MaintenanceRequest[]

  @@unique([tenantId, code])
  @@index([tenantId])
}

model DomainEvent {
  id            String    @id @default(cuid())
  tenantId      String
  aggregateType String
  aggregateId   String
  eventType     String
  payload       Json
  occurredAt    DateTime  @default(now())
  processedAt   DateTime?

  tenant Tenant @relation(fields: [tenantId], references: [id], onDelete: Cascade)

  @@index([tenantId])
  @@index([tenantId, processedAt])
  @@index([tenantId, aggregateType, aggregateId])
}

model MaintenanceRequest {
  id               String                   @id @default(cuid())
  tenantId         String
  workstationId    String
  reportedByUserId String
  description      String
  photoKey         String?
  status           MaintenanceRequestStatus @default(OPEN)
  clientRequestId  String
  createdAt        DateTime                 @default(now())

  claimedByUserId String?
  claimedAt       DateTime?

  resolvedByUserId String?
  resolvedAt       DateTime?
  resolutionNote   String?

  tenant      Tenant      @relation(fields: [tenantId], references: [id], onDelete: Cascade)
  workstation Workstation @relation(fields: [workstationId], references: [id])
  reportedBy  User        @relation("reported", fields: [reportedByUserId], references: [id])
  claimedBy   User?       @relation("claimed", fields: [claimedByUserId], references: [id])
  resolvedBy  User?       @relation("resolved", fields: [resolvedByUserId], references: [id])

  @@unique([tenantId, clientRequestId])
  @@index([tenantId, status, createdAt])
  @@index([tenantId, reportedByUserId])
}