import { content, type ShipModel } from "@deadhead/content";
import { describe, expect, it } from "vitest";
import { checkRoute } from "../src/index";

const earth = content.location("earth")!;
const moon = content.location("moon")!;
const mars = content.location("mars")!;
const ceres = content.location("ceres-station")!;
const jupiter = content.location("jupiter-cloud-platform")!;
const courier = content.shipModel("courier")!;
const freighter = content.shipModel("freighter")!;
const bulkHauler = content.shipModel("bulk-hauler")!;

/** Test-only ship that cannot land on atmospheric worlds. */
const vacuumShip: ShipModel = { ...courier, id: "test-vacuum", landingClass: "vacuum" };

// The map is fixed (decision 0.5.93), so any time gives the same answer.
const outOfRange = { ok: false, reason: "out-of-range" };

// Origins are named in every test (decision 0.5.77: range is per leg, from its origin).
describe("route eligibility", () => {
  it("lets a Courier fly Earth→Moon and Moon→Earth", () => {
    expect(checkRoute(courier, earth, moon)).toEqual({ ok: true });
    expect(checkRoute(courier, moon, earth)).toEqual({ ok: true });
  });

  it("keeps a Courier from Earth out of range of Mars, Ceres and Jupiter", () => {
    for (const to of [mars, ceres, jupiter]) {
      expect(checkRoute(courier, earth, to)).toEqual(outOfRange);
    }
  });

  it("rejects a vacuum-only ship at Earth because it cannot land", () => {
    expect(checkRoute(vacuumShip, moon, earth)).toEqual({
      ok: false,
      reason: "cannot-land",
    });
    expect(checkRoute(vacuumShip, earth, moon)).toEqual({ ok: true });
  });

  it("lets a Freighter from Earth reach Mars and Ceres (CR-015 §4)", () => {
    expect(checkRoute(freighter, earth, mars)).toEqual({ ok: true });
    expect(checkRoute(freighter, earth, ceres)).toEqual({ ok: true });
  });

  it("lets only the Bulk Hauler reach Jupiter from Earth", () => {
    expect(checkRoute(bulkHauler, earth, jupiter)).toEqual({ ok: true });
    expect(checkRoute(freighter, earth, jupiter)).toEqual(outOfRange);
    expect(checkRoute(courier, earth, jupiter)).toEqual(outOfRange);
  });
});