import { describe, expect, it } from "vitest";
import { formatPaise, paiseToInput, parseRupeesToPaise } from "./money";

describe("money", () => {
  it("parses typed amounts to exact paise", () => {
    expect(parseRupeesToPaise("1250.5")).toBe(125050);
    expect(parseRupeesToPaise("1,25,000")).toBe(12500000);
    expect(parseRupeesToPaise("₹ 99.99")).toBe(9999);
    expect(parseRupeesToPaise("0.29")).toBe(29);
    expect(parseRupeesToPaise("19.9")).toBe(1990);
    expect(parseRupeesToPaise("5.")).toBe(500);
    expect(parseRupeesToPaise("")).toBe(0);
  });

  it("rejects non-amounts", () => {
    for (const bad of ["abc", "-5", "1.234", "1e3", "1.2.3", ".5"]) expect(parseRupeesToPaise(bad)).toBeNull();
    expect(parseRupeesToPaise("99999999999999999999")).toBeNull();
  });

  it("formats", () => {
    expect(paiseToInput(123450)).toBe("1234.50");
    expect(paiseToInput(5)).toBe("0.05");
    expect(formatPaise(12500000)).toBe("₹1,25,000.00");
  });
});