model Customer {
  id          String       @id @default(ulid())
  is_favorite Boolean?     @default(false)
  type        CustomerType

  created_at DateTime  @default(now()) @db.Timestamp(0)
  updated_at DateTime  @updatedAt @db.Timestamp(0)
  deleted_at DateTime? @db.Timestamp(0)

  individual CustomerIndividual?
  legal      CustomerLegal?

  sales_invoices SalesInvoice[]

  @@map("customers")
}

model CustomerIndividual {
  first_name    String @db.VarChar(255)
  last_name     String @db.VarChar(255)
  national_id   String @db.Char(10)
  mobile_number String @db.Char(15)

  postal_code   String  @db.Char(10)
  economic_code String? @db.Char(10)

  customer_id String   @id
  customer    Customer @relation(fields: [customer_id], references: [id], onDelete: Cascade)

  business_activity_id String
  business_activity    BusinessActivity @relation(fields: [business_activity_id], references: id)

  @@unique([business_activity_id, national_id])
  @@index([business_activity_id])
  @@map("customer_individuals")
}

model CustomerLegal {
  name                String  @db.VarChar(255)
  economic_code       String  @db.Char(10)
  registration_number String? @db.Char(20)
  postal_code         String  @db.Char(10)

  customer_id String   @id
  customer    Customer @relation(fields: [customer_id], references: [id], onDelete: Cascade)

  business_activity_id String
  business_activity    BusinessActivity @relation(fields: [business_activity_id], references: id)

  @@unique([business_activity_id, economic_code])
  @@index([business_activity_id])
  @@map("customer_legal")
}