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

import {
  extractUnitCount,
  parseMoney,
  parseRating,
  parseReviewCount,
  parseStarBreakdown,
  parseUnitPrice
} from "../src/parsers.js";

describe("parsers", () => {
  it("parses USD money", () => {
    assert.deepEqual(parseMoney("$19.99"), { amount: 19.99, currency: "USD", display: "$19.99" });
  });

  it("parses rating text", () => {
    assert.equal(parseRating("4.6 out of 5 stars"), 4.6);
  });

  it("parses review count text", () => {
    assert.equal(parseReviewCount("1,234 ratings"), 1234);
  });

  it("parses visible star histogram percentages", () => {
    assert.deepEqual(parseStarBreakdown("5 star 72% 4 star 15% 3 star 7% 2 star 3% 1 star 3%"), {
      five: 72,
      four: 15,
      three: 7,
      two: 3,
      one: 3,
      basis: "percent"
    });
  });

  it("extracts high-confidence unit counts", () => {
    assert.deepEqual(extractUnitCount("LED bulbs, 100 Count, daylight"), {
      count: 100,
      confidence: "high",
      source: "100 Count"
    });
    assert.deepEqual(extractUnitCount("Pack of 6 USB-C cables"), {
      count: 6,
      confidence: "high",
      source: "Pack of 6"
    });
  });

  it("distinguishes lower-confidence unit count phrases", () => {
    assert.deepEqual(extractUnitCount("Set of 8 replacement filters"), {
      count: 8,
      confidence: "medium",
      source: "Set of 8"
    });
    assert.deepEqual(extractUnitCount("6 bulbs soft white"), {
      count: 6,
      confidence: "low",
      source: "6 bulbs"
    });
  });

  it("parses visible unit prices", () => {
    assert.deepEqual(parseUnitPrice("$0.33/Count"), {
      amount: 0.33,
      currency: "USD",
      display: "$0.33/Count"
    });
  });

  it("parses whole-dollar and one-decimal prices", () => {
    assert.deepEqual(parseMoney("$20"), { amount: 20, currency: "USD", display: "$20" });
    assert.deepEqual(parseMoney("$19.9"), { amount: 19.9, currency: "USD", display: "$19.9" });
  });
});