// DuOrigin v2 - Prisma Schema
// EUDR Compliance Platform for Brazilian Agribusiness
// Generated from production PostgreSQL database (jarvis-do)

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

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

// ============================================
// Users & Authentication
// ============================================

model User {
  id              Int       @id @default(autoincrement())
  email           String    @unique
  hashed_password String
  full_name       String?
  role            String?   @default("operator") // admin, operator, viewer
  is_active       Boolean?  @default(true)
  created_at      DateTime? @default(now())

  // Relations
  auditLogs AuditLog[]

  @@index([id])
  @@map("users")
}

// ============================================
// Companies (Empresas)
// ============================================

model Company {
  id             Int       @id @default(autoincrement())
  name           String
  cnpj           String?   @unique
  country        String?   @default("BR")
  state          String?
  city           String?
  eu_operator_id String?   // EU Operator ID for EUDR
  created_at     DateTime? @default(now())

  // Relations
  producers     Producer[]
  ddsStatements DdsStatement[]

  @@index([id])
  @@index([cnpj])
  @@map("companies")
}

// ============================================
// Producers (Produtores Rurais)
// ============================================

model Producer {
  id         Int       @id @default(autoincrement())
  name       String
  cpf_cnpj   String?   @unique
  company_id Int?
  state      String?
  city       String?
  car_code   String?   // CAR - Cadastro Ambiental Rural
  created_at DateTime? @default(now())

  // Relations
  company Company? @relation(fields: [company_id], references: [id])
  areas   Area[]
  lots    Lot[]

  @@index([id])
  @@index([cpf_cnpj])
  @@map("producers")
}

// ============================================
// Areas (Propriedades Rurais / Glebas)
// ============================================

model Area {
  id                 Int       @id @default(autoincrement())
  name               String
  producer_id        Int?
  geojson            String?   @db.Text // GeoJSON polygon
  area_ha            Float?    // Area in hectares
  biome              String?   // Cerrado, Amazônia, Mata Atlântica, etc.
  risk_level         String?   // low, medium, high, critical
  deforestation_flag String?   // none, alert, confirmed
  lat_center         Float?    // Latitude center point
  lon_center         Float?    // Longitude center point
  created_at         DateTime? @default(now())

  // Relations
  producer Producer? @relation(fields: [producer_id], references: [id])
  lots     Lot[]

  @@index([id])
  @@map("areas")
}

// ============================================
// Products (Commodities EUDR)
// ============================================

model Product {
  id            Int       @id @default(autoincrement())
  name          String
  hs_code       String?   // Harmonized System code
  eudr_category String?   // cattle, cocoa, coffee, oil palm, rubber, soya, wood
  description   String?
  created_at    DateTime? @default(now())

  // Relations
  lots Lot[]

  @@index([id])
  @@map("products")
}

// ============================================
// Lots (Lotes de Produto)
// ============================================

model Lot {
  id           Int       @id @default(autoincrement())
  reference    String    @unique
  product_id   Int?
  area_id      Int?
  producer_id  Int?
  quantity_kg  Float?
  harvest_date String?
  risk_score   Float?    // 0-100 risk score
  status       String?   @default("pending") // pending, approved, rejected, review
  created_at   DateTime? @default(now())

  // Relations
  product  Product?  @relation(fields: [product_id], references: [id])
  area     Area?     @relation(fields: [area_id], references: [id])
  producer Producer? @relation(fields: [producer_id], references: [id])

  @@index([id])
  @@index([reference])
  @@map("lots")
}

// ============================================
// DDS Statements (Due Diligence Statements)
// ============================================

model DdsStatement {
  id               Int       @id @default(autoincrement())
  reference_number String    @unique
  company_id       Int?
  status           String?   @default("draft") // draft, submitted, approved, rejected
  risk_assessment  String?   // low, medium, high
  lot_ids          String?   @db.Text // JSON array of lot IDs
  submission_date  String?
  eu_reference     String?   // EU system reference after submission
  notes            String?   @db.Text
  created_at       DateTime? @default(now())
  updated_at       DateTime? @updatedAt

  // Relations
  company Company? @relation(fields: [company_id], references: [id])

  @@index([id])
  @@index([reference_number])
  @@map("dds_statements")
}

// ============================================
// Audit Logs (Trilha de Auditoria)
// ============================================

model AuditLog {
  id          Int       @id @default(autoincrement())
  entity_type String    // User, Company, Producer, Area, Lot, DdsStatement
  entity_id   Int?
  action      String    // create, update, delete, login, export
  user_id     Int?
  details     String?   @db.Text // JSON with additional details
  ip_address  String?
  created_at  DateTime? @default(now())

  // Relations
  user User? @relation(fields: [user_id], references: [id])

  @@index([id])
  @@map("audit_logs")
}