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

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

model DbHealthCheck {
  id        String   @id @default(uuid())
  createdAt DateTime @default(now())
}

// =============================================================================
// Пользователи и роли (RBAC)
// =============================================================================

enum Role {
  ADMIN
  DIRECTOR
  MECHANIC
  WORKER
  OTHER
}

model User {
  id        String   @id @default(uuid())
  email     String   @unique
  password  String   // bcrypt hash
  firstName String
  lastName  String
  role      Role     @default(OTHER)
  isActive  Boolean  @default(true)
  createdAt DateTime @default(now())
  updatedAt DateTime @updatedAt

  // Relations
  assignedToOrders RepairOrderAssignee[]
}

// =============================================================================
// Контрагенты
// =============================================================================

model Contractor {
  id        String   @id @default(uuid())
  name      String
  inn       String?  // ИНН (опционально)
  address   String?
  phone     String?
  isActive  Boolean  @default(true)
  createdAt DateTime @default(now())
  updatedAt DateTime @updatedAt

  // Relations
  repairOrders RepairOrder[]
  trips       Trip[]
  serviceObjects ServiceObject[]
  calculationTemplates CalculationTemplate[]
}

// =============================================================================
// Агрегаты (оборудование)
// =============================================================================

model Unit {
  id        String   @id @default(uuid())
  createdAt DateTime @default(now())
  updatedAt DateTime @updatedAt

  // Relations
  identifiers UnitIdentifier[]
  repairOrders RepairOrder[]
}

model UnitIdentifier {
  id         String   @id @default(uuid())
  unitId     String
  type       String   // 'SERIAL', 'INTERNAL', 'CUSTOMER'
  value      String
  validFrom  DateTime @default(now())
  validTo    DateTime?

  // Relations
  unit Unit @relation(fields: [unitId], references: [id], onDelete: Cascade)

  @@unique([unitId, type, value, validFrom])
}

// =============================================================================
// Ремонты (RepairOrder)
// =============================================================================

enum RepairStatus {
  RECEIVED
  DIAGNOSIS
  WAITING_APPROVAL
  WAITING_PARTS
  IN_WORK
  ISSUED
  CANCELED
}

model RepairOrder {
  id            String       @id @default(uuid())
  unitId        String
  contractorId  String
  status        RepairStatus  @default(RECEIVED)
  description   String?
  issuedAt      DateTime?     // дата выдачи
  warrantyFrom  DateTime?     // начало гарантии
  warrantyTo    DateTime?     // конец гарантии
  warrantyDays  Int?          // срок гарантии в днях
  version       Int           @default(1) // optimistic locking
  isActive      Boolean       @default(true)
  createdAt     DateTime      @default(now())
  updatedAt     DateTime      @updatedAt

  // Relations
  unit       Unit               @relation(fields: [unitId], references: [id])
  contractor Contractor         @relation(fields: [contractorId], references: [id])
  assignees  RepairOrderAssignee[]
  calculation Calculation?

  @@index([status])
  @@index([contractorId])
  @@index([unitId])
}

model RepairOrderAssignee {
  id             String @id @default(uuid())
  repairOrderId  String
  userId         String
  assignedAt     DateTime @default(now())

  // Relations
  repairOrder RepairOrder @relation(fields: [repairOrderId], references: [id], onDelete: Cascade)
  user        User        @relation(fields: [userId], references: [id], onDelete: Cascade)

  @@unique([repairOrderId, userId])
}

// =============================================================================
// Выезды
// =============================================================================

model Trip {
  id            String   @id @default(uuid())
  contractorId  String
  serviceObjectId String?
  description   String?
  scheduledFor  DateTime
  completedAt   DateTime?
  isActive      Boolean  @default(true)
  createdAt     DateTime @default(now())
  updatedAt     DateTime @updatedAt

  // Relations
  contractor    Contractor    @relation(fields: [contractorId], references: [id])
  serviceObject ServiceObject? @relation(fields: [serviceObjectId], references: [id])

  @@index([scheduledFor])
}

model ServiceObject {
  id           String   @id @default(uuid())
  contractorId String
  name         String
  address      String?
  isActive     Boolean  @default(true)
  createdAt    DateTime @default(now())
  updatedAt    DateTime @updatedAt

  // Relations
  contractor Contractor @relation(fields: [contractorId], references: [id])
  trips       Trip[]
}

// =============================================================================
// Калькуляции (MVP без денег)
// =============================================================================

model Calculation {
  id            String   @id @default(uuid())
  repairOrderId String   @unique
  templateId    String?
  isActive      Boolean  @default(true)
  createdAt     DateTime @default(now())
  updatedAt     DateTime @updatedAt

  // Relations
  repairOrder RepairOrder      @relation(fields: [repairOrderId], references: [id], onDelete: Cascade)
  template    CalculationTemplate? @relation(fields: [templateId], references: [id])
  items       CalculationItem[]
}

model CalculationTemplate {
  id          String   @id @default(uuid())
  contractorId String?
  name        String
  isActive    Boolean  @default(true)
  createdAt   DateTime @default(now())
  updatedAt   DateTime @updatedAt

  // Relations
  contractor Contractor?   @relation(fields: [contractorId], references: [id])
  calculations Calculation[]
}

model CalculationItem {
  id            String   @id @default(uuid())
  calculationId String
  type          String   // 'WORK' or 'MATERIAL'
  name          String
  quantity      Float
  unit          String   // единицы измерения
  price         Float?   // отложено на будущее (MVP без денег)
  isActive      Boolean  @default(true)
  createdAt     DateTime @default(now())
  updatedAt     DateTime @updatedAt

  // Relations
  calculation Calculation @relation(fields: [calculationId], references: [id], onDelete: Cascade)

  @@index([calculationId, type])
}