import { content } from "@deadhead/content";
import { describe, expect, it } from "vitest";
import { routeDistance, travelTimeGameHours } from "../src/index";

const config = content.config;
const courier = content.shipModel("courier")!;
const freighter = content.shipModel("freighter")!;
const loaner = content.shipModel("company-courier")!;
const earthMoon = () => routeDistance(content.location("earth")!, content.location("moon")!);

describe("travel time", () => {
  it("matches a hand calculation, including handling time", () => {
    // 150M km at 2M km/h = 75 h cruise, plus 4 h overhead, plus 50 t × 0.02 h/t = 1 h handling.
    expect(travelTimeGameHours(freighter, 150, 50, config)).toBe(80);
  });

  it("gets a faster ship there sooner on the same route", () => {
    for (const distance of [0.384, 50, 400]) {
      expect(travelTimeGameHours(courier, distance, 10, config)).toBeLessThan(
        travelTimeGameHours(freighter, distance, 10, config),
      );
    }
  });

  it("is mostly overhead for a Courier on Earth→Moon", () => {
    const total = travelTimeGameHours(courier, earthMoon(), 10, config);
    expect(courier.overheadGameHours).toBeGreaterThan(total / 2);
  });
});

describe("handling time (decision 0.5.31)", () => {
  it("makes a heavier contract take longer than a lighter one on the same route and ship", () => {
    const distance = earthMoon();
    expect(travelTimeGameHours(courier, distance, 20, config)).toBeGreaterThan(
      travelTimeGameHours(courier, distance, 5, config),
    );
  });

  it("gives a reposition (zero mass) the old formula's time", () => {
    const distance = 150;
    const oldFormula =
      (distance * 1e6) / freighter.cruiseSpeedKmPerGameHour + freighter.overheadGameHours;
    expect(travelTimeGameHours(freighter, distance, 0, config)).toBe(oldFormula);
  });

  it("keeps a full Company Courier tutorial run Earth→Moon under 1 game hour (1 real minute)", () => {
    const hours = travelTimeGameHours(loaner, earthMoon(), config.tutorialMassTonnes.full, config);
    expect(hours).toBeLessThan(1);
    expect(config.timeCompression).toBe(60);
  });
});