import { describe, it, expect } from 'vitest';
import { autoplayDay, serveCustomer } from '../../src/sim/autoplay';
import { createNewGame } from '../../src/sim/state';
import { compareDates } from '../../src/sim/calendar';
import { loadDefaultCatalog } from '../../src/sim/catalog';
import { STARTING_CASH_CENTS } from '../../src/sim/economy';
import { getSlot } from '../../src/sim/inventory';
import { makeCustomer, stock, testCatalog } from './helpers';

describe('autoplay', () => {
  it('plays one day end to end', () => {
    const s = createNewGame(1);
    const report = autoplayDay(s, loadDefaultCatalog());
    expect(report.date).toEqual({ year: 1990, month: 9, day: 28 });
    expect(s.date).toEqual({ year: 1990, month: 9, day: 29 });
  });

  it('keeps the economy stable over one year', () => {
    const catalog = loadDefaultCatalog();
    for (const seed of [1, 2, 3]) {
      const s = createNewGame(seed);
      let sales = 0;
      let lost = 0;
      while (compareDates(s.date, { year: 1991, month: 9, day: 28 }) < 0) {
        const report = autoplayDay(s, catalog);
        sales += report.stats.salesCount;
        lost += report.stats.lostRequests;
        expect(s.bankrupt).toBe(false);
      }
      expect(s.cash).toBeGreaterThan(0);
      expect(s.cash).toBeLessThan(STARTING_CASH_CENTS * 100);
      expect(sales).toBeGreaterThan(300);
      expect(lost).toBeGreaterThan(0);
      expect(s.reputation).toBeGreaterThan(0);
    }
  });

  it('skips trades the shop cannot afford instead of throwing', () => {
    const catalog = testCatalog();
    const s = createNewGame(1);
    const tetrisNew = { gameId: 'tetris', condition: 'new' as const };
    stock(s, 'slot-0', tetrisNew, 1);
    s.prices['tetris|new'] = 100;
    s.cash = 0;
    const customer = makeCustomer({ intent: 'trade', offered: { gameId: 'sml', condition: 'complete' } });
    expect(() => serveCustomer(s, catalog, customer)).not.toThrow();
    expect(getSlot(s.inventory, 'slot-0').qty).toBe(1);
    expect(s.day.trades).toBe(0);
  });
});