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

const record = createRepositionRecord(
  {
    id: "r1",
    ship: { id: "s1", modelId: "courier", locationId: "earth", inFlight: false },
    pilot: {
      id: "p1",
      isAvatar: false,
      assignedShipId: "s1",
      inFlight: false,
      skills: {},
      restEndsAt: null,
    },
    destinationId: "moon",
    now: Date.parse("2100-01-01T00:30:00Z"),
    worldSeed: 7,
  },
  content,
);
const midpoint = (record.departureAt + record.arrivalAt) / 2;

describe("in-flight progress", () => {
  it("is 0 at departure, 0.5 at the midpoint and 1 at arrival", () => {
    expect(dispatchProgress(record, record.departureAt)).toBe(0);
    expect(dispatchProgress(record, midpoint)).toBe(0.5);
    expect(dispatchProgress(record, record.arrivalAt)).toBe(1);
  });

  it("stays clamped outside the flight", () => {
    expect(dispatchProgress(record, record.departureAt - 60_000)).toBe(0);
    expect(dispatchProgress(record, record.arrivalAt + 3_600_000)).toBe(1);
  });
});

describe("in-flight position", () => {
  const origin = locationPosition(
    content.location("earth")!,
    realToGame(record.departureAt, content.config),
  );
  const destination = locationPosition(
    content.location("moon")!,
    realToGame(record.arrivalAt, content.config),
  );

  it("starts at the origin's position at departure", () => {
    expect(dispatchPosition(record, record.departureAt, content)).toEqual(origin);
  });

  it("ends at the destination's position at arrival", () => {
    const end = dispatchPosition(record, record.arrivalAt, content);
    expect(end.x).toBeCloseTo(destination.x, 9);
    expect(end.y).toBeCloseTo(destination.y, 9);
  });

  it("is halfway along the line at the midpoint", () => {
    const mid = dispatchPosition(record, midpoint, content);
    expect(mid.x).toBeCloseTo((origin.x + destination.x) / 2, 9);
    expect(mid.y).toBeCloseTo((origin.y + destination.y) / 2, 9);
  });
});