// SPDX-License-Identifier: LicenseRef-ConusAI-Template-1.0
// The invoice terms accept exactly what the Invoicing service accepts: its `DecimalAmount` grammar and ISO 4217
// codes (business-services/types). The module's own regex let `007.50` and `XYZ` through, which the service then
// refused; a person found out only after submitting.
import { describe, expect, it } from "vitest"
import { decimal, line, money } from "../contract/index.js"

describe("the invoice's exact money", () => {
  it("refuses an amount with a leading zero and a currency the service does not know", () => {
    for (const amount of ["007.50", "00", "-01", "1.", ".5", "+1", "1e3", "1,50"]) {
      expect(decimal.safeParse(amount).success, amount).toBe(false)
    }
    expect(money.safeParse({ amount: "7.50", currency: "XYZ" }).success).toBe(false)
    expect(money.safeParse({ amount: "7.50", currency: "LTL" }).success).toBe(false)
  })

  it("takes a line's unit only as a UN/CEFACT Rec 20 code the service accepts", () => {
    const base = {
      quantity: "3",
      item_name: "Bolt",
      net_price: { amount: "1.20", currency: "EUR" },
      vat_category: "S",
      vat_rate: "21",
    }
    expect(line.safeParse({ ...base, unit: "C62" }).success).toBe(true)
    for (const unit of ["pcs", "PCS", "XBX", "m2"]) expect(line.safeParse({ ...base, unit }).success, unit).toBe(false)
  })

  it("accepts every amount the service accepts, trailing zeros and its bounds included", () => {
    for (const amount of ["0", "-0.00", "7.50", "9999999999999999999999999999.999999999999999999"]) {
      expect(decimal.safeParse(amount).success, amount).toBe(true)
    }
    expect(decimal.safeParse("10000000000000000000000000000").success).toBe(false)
    expect(money.safeParse({ amount: "7.50", currency: "EUR" }).success).toBe(true)
  })
})