import { describe, expect, it, vi } from "vitest";
import {
  isMobAggroRangeVisible,
  MOB_AGGRO_RANGE_VISIBILITY_DISTANCE,
} from "./mobAggroRangeVisibility";

describe("mob aggro range visibility", () => {
  it("shows an in-range mob only when the player has line of sight", () => {
    const visible = vi.fn(() => true);
    const blocked = vi.fn(() => false);

    expect(isMobAggroRangeVisible([0, 0, 0], [20, 0, 0], visible)).toBe(true);
    expect(isMobAggroRangeVisible([0, 0, 0], [20, 0, 0], blocked)).toBe(false);
    expect(visible).toHaveBeenCalledWith([0, 0, 0], [20, 0, 0]);
    expect(blocked).toHaveBeenCalledWith([0, 0, 0], [20, 0, 0]);
  });

  it("hides distant mobs without performing a line-of-sight query", () => {
    const hasLineOfSight = vi.fn(() => true);

    expect(isMobAggroRangeVisible(
      [0, 0, 0],
      [MOB_AGGRO_RANGE_VISIBILITY_DISTANCE + 0.01, 0, 0],
      hasLineOfSight,
    )).toBe(false);
    expect(hasLineOfSight).not.toHaveBeenCalled();
  });

  it("includes mobs exactly on the visibility boundary", () => {
    expect(isMobAggroRangeVisible(
      [0, 0, 0],
      [0, 0, MOB_AGGRO_RANGE_VISIBILITY_DISTANCE],
      () => true,
    )).toBe(true);
  });
});