import test from 'node:test';
import assert from 'node:assert/strict';
import {
  bestAffordableMarketUpgrade,
  buyAndInstallModule,
  collectSalvage,
  createStarterProgression,
  deriveShipStats,
  installModule,
  salvageForPirate,
} from '../src/progression/ship-loadout.js';

test('starter loadout preserves current ship combat and handling values', () => {
  const progression = createStarterProgression();
  const stats = deriveShipStats(progression.loadout);
  assert.equal(stats.maxHull, 100);
  assert.equal(stats.maxSpeed, 180);
  assert.equal(stats.turnRate, 76);
  assert.equal(stats.reloadMs, 850);
  assert.equal(stats.cannonDamage, 16);
});

test('installed modules derive meaningful ship stat changes', () => {
  const progression = installModule(createStarterProgression(), 'corsair-overdrive');
  const stats = deriveShipStats(progression.loadout);
  assert.equal(stats.maxSpeed, 214);
  assert.equal(stats.acceleration, 110);
  assert.equal(stats.turnRate, 71);
});

test('port purchase deducts credits and installs the module', () => {
  const starter = createStarterProgression();
  const result = buyAndInstallModule(starter, 'tuned-propellers');
  assert.equal(result.purchased, false);
  const funded = { ...starter, credits: 1000 };
  const fundedResult = buyAndInstallModule(funded, 'tuned-propellers');
  assert.equal(fundedResult.purchased, true);
  assert.equal(fundedResult.credits, funded.credits - 800);
  assert.equal(fundedResult.loadout.engine, 'tuned-propellers');
});

test('pirate salvage is deterministic and collectible within salvage capacity', () => {
  const salvageA = salvageForPirate({ seed: 'WORLD', classKey: 'captain', wave: 4, sequence: 2 });
  const salvageB = salvageForPirate({ seed: 'WORLD', classKey: 'captain', wave: 4, sequence: 2 });
  assert.deepEqual(salvageA, salvageB);

  const starter = createStarterProgression();
  const collected = collectSalvage(starter, salvageA);
  assert.ok(collected.credits >= starter.credits);
  assert.ok(collected.scrap >= starter.scrap);
});

test('market can select an affordable upgrade for a port', () => {
  const starter = createStarterProgression();
  const upgrade = bestAffordableMarketUpgrade(starter, { type: 'military' });
  assert.ok(upgrade);
  assert.ok(upgrade.price <= starter.credits);
});


test('rudder tier matches shipyard art and improves handling', () => {
  const starter = { ...createStarterProgression(), credits: 650 };
  const result = buyAndInstallModule(starter, 'reinforced-rudder');
  const stats = deriveShipStats(result.loadout);
  assert.equal(result.purchased, true);
  assert.equal(result.credits, 250);
  assert.equal(stats.turnRate, 88);
});