import test from 'node:test';
import assert from 'node:assert/strict';

import { PIRATE_CLASSES, pirateClassForWave, separationVector } from '../src/pirate-ai.js';

test('pirate classes expose distinct combat roles', () => {
  assert.ok(PIRATE_CLASSES.raider.speed > PIRATE_CLASSES.frigate.speed);
  assert.ok(PIRATE_CLASSES.raider.hull < PIRATE_CLASSES.frigate.hull);
  assert.ok(PIRATE_CLASSES.captain.hull > PIRATE_CLASSES.frigate.hull);
  assert.ok(PIRATE_CLASSES.captain.damage > PIRATE_CLASSES.frigate.damage);
});

test('waves introduce raiders and captains without exceeding the wave composition', () => {
  assert.equal(pirateClassForWave(1, 0, 1).key, 'frigate');
  assert.equal(pirateClassForWave(3, 0, 3).key, 'raider');
  assert.equal(pirateClassForWave(4, 3, 4).key, 'captain');
});

test('separation steering pushes nearby ships apart and ignores distant ships', () => {
  const ship = { x: 100, y: 100, active: true };
  const close = { x: 150, y: 100, active: true };
  const far = { x: 500, y: 100, active: true };

  const vector = separationVector(ship, [ship, close, far], 125);

  assert.ok(vector.x < 0, 'ship should steer away from a close ship on its right');
  assert.equal(vector.y, 0);
  assert.ok(Math.hypot(vector.x, vector.y) <= 1);
});