const test = require('node:test');
const assert = require('node:assert/strict');
const fs = require('node:fs');

function loadCheckoutApiUtils() {
  const source = fs.readFileSync('background/checkout-api-utils.js', 'utf8');
  const scope = {};
  new Function('self', `${source}; return self.MultiPageCheckoutApiUtils;`)(scope);
  return scope.MultiPageCheckoutApiUtils;
}

test('extractPaypalSmsCode reads code from json or plain sms text', () => {
  const api = loadCheckoutApiUtils();

  assert.equal(
    api.extractPaypalSmsCode(JSON.stringify({ msg: 'PayPal code: 482913. Do not share.' })),
    '482913'
  );
  assert.equal(
    api.extractPaypalSmsCode('暂无短信'),
    ''
  );
  assert.equal(
    api.extractPaypalSmsCode('旧码 111111 新码 222222', { excludeCodes: ['111111'] }),
    '222222'
  );
  assert.equal(
    api.extractPaypalSmsCode("yes|PayPal: 804999 is your security code. Don't share it.|(PayPal)|到期时间：2026-06-29 00:00:00"),
    '804999'
  );
});

test('fetchPaypalSmsCode polls until the sms code appears', async () => {
  const api = loadCheckoutApiUtils();
  const calls = [];

  const result = await api.fetchPaypalSmsCode({
    smsApiUrl: 'http://a.62-us.com/api/get_sms?key=test',
    maxAttempts: 2,
    intervalMs: 1,
  }, {
    fetchImpl: async (url) => {
      calls.push(url);
      return {
        ok: true,
        status: 200,
        text: async () => calls.length === 1 ? 'not ready' : '{"data":"PayPal verification code 654321"}',
      };
    },
    sleep: async () => {},
  });

  assert.equal(result.code, '654321');
  assert.equal(result.attempt, 2);
  assert.equal(calls.length, 2);
});