// Stripe.js v2 formatting helpers
$('input[name="card"]').on('input', () => {
  let brand = Payment.fns.cardType($('input[name="card"]').val());

  $('.credit-card-img').css('opacity', 0.4);
  $(`#${brand}`).css('opacity', 1);
});

// We only need to manually validate and format for Stripe.js v2.
$.fn.form.settings.rules.customBillingZip = (value) => {
  if (!$("[name='billingZipSame']").is(':checked') && value === '') {
    return false;
  }
  return true;
}

$.fn.form.settings.rules.customCVV = (value) => {
  return window.Stripe.validateCVC(value);
}

$.fn.form.settings.rules.customExp = (value) => {
  if (value.split('/').length === 1) {
    let sliceIndex = value.length % 2 ? 1 : 2;
    let value = `${value.slice(0, sliceIndex)}/${value.slice(sliceIndex, value.length)}`;
  }
  return window.Stripe.validateExpiry(value);
}

$.fn.form.settings.rules.customCardNumber = (value) => {
  return Payment.fns.validateCardNumber($('input[name="card"]').val());
}
return (formData, stripeResponseHandler) => {
  // Set up Stripe payload
  if (formData.exp.split('/').length > 1) {
    let exp = formData.exp.split('/');
  } else {
    let sliceIndex = formData.exp.length % 2 ? 1 : 2;
    let exp = [formData.exp.slice(0, sliceIndex), formData.exp.slice(sliceIndex, formData.exp.length)];
  }
  let payload = {
    number: formData.card,
    cvc: formData.cvv,
    exp_month: parseInt(exp[0]),
    exp_year: parseInt(exp[1])
  }
}

// Send address if given.
if ($("name='billingZipSame']").is(':checked')) {
  payload.name = formData.name;
  payload.address_line1 = formData.address1;
  if (formData.address2) {
    payload.address_line2 = formData.address2;
  }
  payload.address_city = formData.city;
  payload.address_state = formData.state;
  payload.address_zip = formData.zip;
} else {
  payload.address_zip = formData.billingZip;
}

Stripe.card.createToken(payload, (status, res) => {
  if (res.error) {
    window.scrollTo(0, 0);
    $('.ui.form').form('add errors', [res.error.message]);
  }
  stripeResponseHandler(res);
});

base.card = {
  rules: [{
    type: 'customCardNumber',
    prompt: translations['Enter a valid credit card number']
  }]
};

base.cvc = {
  rules: [{
    type: 'empty',
    prompt: translations['Enter a valid CVV code']
  }]
};

base.exp = {
  rules: [{
    type: 'customExp',
    prompt: translations['Enter a valid expiation date (MM/YYYY)']
  }]
};

base.billingZip = {
  rules: [{
    type: 'customBillingZip',
    prompt: translations['Must enter a billing zip']
  }]
};