import { describe, expect, it } from "vitest";
import { requiredQuantity, suggestionHidden } from "./shopping";

describe("requiredQuantity", () => {
  it("ürün tipi kaleminde girilen miktar; boşsa 0", () => {
    expect(requiredQuantity({ kind: "type", quantity: 2500 }, null)).toBe(2500);
    expect(requiredQuantity({ kind: "type", quantity: null }, null)).toBe(0);
  });

  it("ürün kaleminde paket adedi × paketin tip karşılığı; boşsa 1 paket", () => {
    // 2 paket × 50 yıkama
    expect(requiredQuantity({ kind: "product", quantity: 2000 }, 50_000)).toBe(100_000);
    expect(requiredQuantity({ kind: "product", quantity: null }, 500)).toBe(500);
    expect(requiredQuantity({ kind: "product", quantity: 2000 }, null)).toBe(0);
  });
});

describe("suggestionHidden", () => {
  const d = (s: string) => new Date(s);
  it("reddedilmemişse görünür", () => {
    expect(suggestionHidden(null, null)).toBe(false);
  });
  it("redden sonra alım yoksa gizli, alım gelince yeniden görünür", () => {
    expect(suggestionHidden(d("2026-11-01"), null)).toBe(true);
    expect(suggestionHidden(d("2026-11-01"), d("2026-10-20"))).toBe(true);
    expect(suggestionHidden(d("2026-11-01"), d("2026-11-03"))).toBe(false);
  });
});