/**
 * Author: Simon-Pierre Boucher
 * Contact: contact@spboucher.ai
 * Project: Groupe Ka / Ka Maps
 */

import { describe, expect, it } from "vitest";
import {
  formatCompactPrice,
  formatFullPrice,
  formatPercent,
  median,
} from "../src/utils/format.js";

describe("formatCompactPrice", () => {
  it("formats the spec examples", () => {
    expect(formatCompactPrice(289_000)).toBe("289 k$");
    expect(formatCompactPrice(499_900)).toBe("500 k$");
    expect(formatCompactPrice(1_250_000)).toBe("1,25 M$");
    expect(formatCompactPrice(2_800_000)).toBe("2,8 M$");
  });

  it("keeps rents in whole dollars", () => {
    expect(formatCompactPrice(950)).toBe("950 $");
    // Group separator is U+202F (narrow no-break space), fr-CA convention.
    expect(formatCompactPrice(1450)).toBe("1 450 $");
  });

  it("rounds 999 500+ into millions", () => {
    expect(formatCompactPrice(999_600)).toBe("1 M$");
  });

  it("handles large and degenerate values", () => {
    expect(formatCompactPrice(12_300_000)).toBe("12,3 M$");
    expect(formatCompactPrice(Number.NaN)).toBe("");
    expect(formatCompactPrice(-5)).toBe("");
  });
});

describe("formatFullPrice", () => {
  it("groups with narrow no-break spaces", () => {
    expect(formatFullPrice(589_000)).toBe("589 000 $");
    expect(formatFullPrice(1_250_000)).toBe("1 250 000 $");
  });
});

describe("formatPercent", () => {
  it("signs and localizes", () => {
    expect(formatPercent(0.058)).toBe("+5,8 %");
    expect(formatPercent(-0.012)).toBe("-1,2 %");
    expect(formatPercent(0)).toBe("0,0 %");
  });
});

describe("median", () => {
  it("computes odd/even medians and ignores junk", () => {
    expect(median([3, 1, 2])).toBe(2);
    expect(median([4, 1, 2, 3])).toBe(2.5);
    expect(median([1, Number.NaN, 3])).toBe(2);
    expect(median([])).toBeUndefined();
  });
});