import assert from "node:assert/strict";
import { describe, it } from "node:test";

import { extractWidthInches, formatWidthInches } from "../src/product-metrics.js";
import type { ProductSearchResult } from "../src/types.js";

function product(overrides: Partial<ProductSearchResult>): ProductSearchResult {
  return {
    asin: "B0WIDTH001",
    title: "Base Product",
    url: "https://www.amazon.com/dp/B0WIDTH001",
    specs: [],
    bullets: [],
    matchedFilters: [],
    missingFields: [],
    extractionNotes: [],
    ...overrides
  };
}

describe("product metrics", () => {
  it("extracts explicit W dimensions from overall product specs", () => {
    const width = extractWidthInches(product({
      specs: [{ name: "Product Dimensions", value: "35\"D x 83.4\"W x 31\"H" }]
    }));

    assert.equal(width, 83.4);
  });

  it("uses dimension order labels when W is not repeated in the value", () => {
    const width = extractWidthInches(product({
      specs: [{ name: "Item Dimensions D x W x H", value: "35 x 108 x 31 inches" }]
    }));

    assert.equal(width, 108);
  });

  it("ignores non-overall width specs before falling back to title width", () => {
    const width = extractWidthInches(product({
      title: "83 Inch Sofa Bed",
      specs: [
        { name: "Seat Interior Width", value: "65 Inches" },
        { name: "Arm Width", value: "5 Inches" },
        { name: "Minimum Required Door Width", value: "72 Inches" }
      ]
    }));

    assert.equal(width, 83);
  });

  it("formats unknown and decimal widths", () => {
    assert.equal(formatWidthInches(undefined), "unknown");
    assert.equal(formatWidthInches(83.4), "83.4\"");
    assert.equal(formatWidthInches(108), "108\"");
  });
});