import { describe, it, expect } from "vitest";
import { CreateQuotationSchema } from "../schemas/offers.schema";
import { CreateInvoiceSchema } from "../schemas/invoices.schema";

/**
 * The per-item Sleva is a percentage: the offer- and invoice-item schemas must
 * accept 0–100, default to 0 when absent, and reject out-of-range values.
 */

describe("offer item discount schema", () => {
  it("accepts a 0–100 discount", () => {
    const r = CreateQuotationSchema.safeParse({
      items: [{ description: "X", quantity: 1, unit_price: 100, discount: 15 }],
    });
    expect(r.success).toBe(true);
    expect(r.success && r.data.items?.[0].discount).toBe(15);
  });

  it("defaults discount to 0 when absent", () => {
    const r = CreateQuotationSchema.safeParse({
      items: [{ description: "X", quantity: 1, unit_price: 100 }],
    });
    expect(r.success && r.data.items?.[0].discount).toBe(0);
  });

  it("rejects a discount above 100", () => {
    const r = CreateQuotationSchema.safeParse({
      items: [
        { description: "X", quantity: 1, unit_price: 100, discount: 150 },
      ],
    });
    expect(r.success).toBe(false);
  });
});

describe("invoice item discount schema", () => {
  it("accepts a 0–100 discount and defaults to 0", () => {
    const ok = CreateInvoiceSchema.safeParse({
      items: [{ description: "X", quantity: 1, unit_price: 100, discount: 10 }],
    });
    expect(ok.success && ok.data.items?.[0].discount).toBe(10);

    const def = CreateInvoiceSchema.safeParse({
      items: [{ description: "X", quantity: 1, unit_price: 100 }],
    });
    expect(def.success && def.data.items?.[0].discount).toBe(0);
  });

  it("rejects a negative discount", () => {
    const r = CreateInvoiceSchema.safeParse({
      items: [{ description: "X", quantity: 1, unit_price: 100, discount: -5 }],
    });
    expect(r.success).toBe(false);
  });
});