import { calculatePrice, type PriceRule } from '../src/pricing/pricing.policy';
import { pricingSchema } from '../src/pricing/pricing.schema';
const rule: PriceRule = {
  taxMode: 'EXCLUSIVE',
  merchandiseTaxBps: 1800,
  shippingFee: '50.00',
  shippingTaxBps: 1800,
  freeShippingMinimum: null,
};
describe('configurable pricing calculations', () => {
  it('calculates exclusive merchandise tax and shipping tax exactly', () => {
    expect(calculatePrice('100.00', rule)).toEqual({
      merchandiseTax: '18.00',
      shippingNet: '50.00',
      shippingTax: '9.00',
      taxTotal: '27.00',
      payableTotal: '177.00',
    });
  });
  it('extracts inclusive tax without adding it twice and handles odd basis points', () => {
    expect(
      calculatePrice('118.00', { ...rule, taxMode: 'INCLUSIVE' }),
    ).toMatchObject({ merchandiseTax: '18.00', payableTotal: '177.00' });
    expect(
      calculatePrice('100.01', {
        ...rule,
        taxMode: 'INCLUSIVE',
        merchandiseTaxBps: 1,
      }),
    ).toMatchObject({ merchandiseTax: '0.01' });
  });
  it('applies free shipping at the discounted merchandise threshold and rounds small values', () => {
    const free = { ...rule, freeShippingMinimum: '100.00' };
    expect(calculatePrice('100.00', free)).toMatchObject({
      shippingNet: '0.00',
      shippingTax: '0.00',
      payableTotal: '118.00',
    });
    expect(calculatePrice('99.99', free).shippingNet).toBe('50.00');
    expect(
      calculatePrice('0.01', {
        ...rule,
        merchandiseTaxBps: 5000,
        shippingFee: '0.00',
      }).merchandiseTax,
    ).toBe('0.01');
    expect(
      calculatePrice('0', { ...free, freeShippingMinimum: '0.00' })
        .payableTotal,
    ).toBe('0.00');
  });
  it('requires explicit bounded rules and rejects active or unknown fields on creation', () => {
    const input = {
      ...rule,
      name: 'Test policy',
      currency: 'INR',
      countryCode: 'in',
    };
    expect(pricingSchema.parse(input)).toMatchObject({
      countryCode: 'IN',
      region: '',
    });
    for (const change of [
      { merchandiseTaxBps: -1 },
      { shippingTaxBps: 10001 },
      { shippingFee: '-1.00' },
      { active: true },
      { countryCode: 'IND' },
      { currency: 'XXX' },
    ])
      expect(pricingSchema.safeParse({ ...input, ...change }).success).toBe(
        false,
      );
  });
});