psp_api/prisma/schema/sales.prisma

model SalesInvoice {
  id                   Int                   @id @default(autoincrement())
  code                 String                @unique @db.VarChar(100)
  totalAmount          Decimal               @db.Decimal(15, 2)
  description          String?               @db.Text
  createdAt            DateTime              @default(now()) @db.Timestamp(0)
  updatedAt            DateTime              @updatedAt @db.Timestamp(0)
  customerId           Int?
  customer             Customer?             @relation(fields: [customerId], references: [id])
  items                SalesInvoiceItem[]
  salesInvoicePayments SalesInvoicePayment[]

  @@index([customerId])
  @@map("Sales_Invoices")
}

model SalesInvoiceItem {
  id          Int          @id @default(autoincrement())
  count       Decimal      @db.Decimal(10, 0)
  unitPrice   Decimal      @default(0.00) @db.Decimal(15, 2)
  totalAmount Decimal      @default(0.00) @db.Decimal(15, 2)
  createdAt   DateTime     @default(now()) @db.Timestamp(0)
  invoiceId   Int
  goodId      Int
  serviceId   Int
  invoice     SalesInvoice @relation(fields: [invoiceId], references: [id])
  good        Good?        @relation(fields: [goodId], references: [id])
  service     Service?     @relation(fields: [serviceId], references: [id])

  @@index([invoiceId, goodId])
  @@map("Sales_Invoice_Items")
}

model SalesInvoicePayment {
  id            Int               @id @default(autoincrement())
  invoiceId     Int
  amount        Decimal           @db.Decimal(15, 2)
  paymentMethod PaymentMethodType
  paidAt        DateTime
  createdAt     DateTime          @default(now())

  invoice SalesInvoice @relation(fields: [invoiceId], references: [id])

  @@index([invoiceId])
  @@map("Sales_Invoice_Payments")
}