import { describe, expect, it } from "vitest";
import { contactDelta, dueState, isOutgoing } from "./contacts";
import { addDays } from "./recurrence";

describe("cari", () => {
  it("yön ve bakiye etkisi", () => {
    expect(isOutgoing("lend")).toBe(true);
    expect(isOutgoing("repay")).toBe(true);
    expect(isOutgoing("borrow")).toBe(false);
    expect(contactDelta("lend", 100)).toBe(100);
    expect(contactDelta("repay", 100)).toBe(100);
    expect(contactDelta("borrow", 100)).toBe(-100);
    expect(contactDelta("collect", 100)).toBe(-100);
  });

  it("vade durumu", () => {
    const today = "2026-11-05";
    expect(dueState(100, null, 3, today, addDays)).toBe("none");
    expect(dueState(0, "2026-11-01", 3, today, addDays)).toBe("none");
    expect(dueState(-100, "2026-11-04", 3, today, addDays)).toBe("overdue");
    expect(dueState(100, "2026-11-08", 3, today, addDays)).toBe("upcoming");
    expect(dueState(100, "2026-11-09", 3, today, addDays)).toBe("none");
    expect(dueState(100, "2026-11-05", 0, today, addDays)).toBe("upcoming");
  });
});