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

const fromSun = (id: string) => {
  const { x, y } = locationPosition(content.location(id)!);
  return Math.hypot(x, y);
};

describe("location positions", () => {
  it("puts Earth about 150 million km from the Sun", () => {
    expect(fromSun("earth")).toBeGreaterThan(147);
    expect(fromSun("earth")).toBeLessThan(153);
  });

  it("puts Mars 206–250 million km from the Sun", () => {
    expect(fromSun("mars")).toBeGreaterThan(206);
    expect(fromSun("mars")).toBeLessThan(250);
  });

  it("puts Jupiter Cloud Platform 740–820 million km from the Sun", () => {
    expect(fromSun("jupiter-cloud-platform")).toBeGreaterThan(740);
    expect(fromSun("jupiter-cloud-platform")).toBeLessThan(820);
  });

  it("puts Ceres Station on its ~414 million km orbit", () => {
    expect(fromSun("ceres-station")).toBeCloseTo(414, 0);
  });

  it("keeps the Moon within 1 million km of Earth", () => {
    const earth = locationPosition(content.location("earth")!);
    const moon = locationPosition(content.location("moon")!);
    expect(Math.hypot(moon.x - earth.x, moon.y - earth.y)).toBeLessThan(1);
  });

  it("never moves (decision 0.5.93)", () => {
    for (const location of content.locations) {
      expect(locationPosition(location)).toEqual(locationPosition(location));
    }
  });
});