import { describe, expect, it } from "vitest";
import { getDashboardData } from "@/domain/analytics";
import { marginPercent } from "@/domain/recommendations";

describe("pricing recommendations", () => {
  const data = getDashboardData();

  it("protects every product margin floor", () => {
    for (const recommendation of data.recommendations) {
      const product = data.inventory.find((item) => item.productId === recommendation.productId)!.product;
      expect(marginPercent(product, recommendation.recommendedLow))
        .toBeGreaterThanOrEqual(product.marginFloorPercent - 0.01);
    }
  });

  it("provides explanations and bounded ranges", () => {
    for (const recommendation of data.recommendations) {
      expect(recommendation.reason.length).toBeGreaterThan(20);
      expect(recommendation.recommendedHigh).toBeGreaterThanOrEqual(recommendation.recommendedLow);
      expect(recommendation.recommendedHigh).toBeLessThanOrEqual(recommendation.currentPrice);
    }
  });

  it("contains actionable aging-stock recommendations", () => {
    expect(data.recommendations.some((item) => item.type === "markdown")).toBe(true);
    expect(data.recommendations.some((item) => item.type === "promotion")).toBe(true);
  });
});