// Capture localization context from init event
var _instanceKey = 'INSTANCE_KEY';
var _marketId = '';
var _webPresenceId = '';
var _languageCode = '';

// bootstrap event tag
(function(w, d, l, i, u) {

  w._twa = l;w[l] = w[l] || [];
  w[l].push({ 'twa.start': new Date().getTime(), event: 'twa.js' });
  w[l].push({ 'twa.instance': i, event: 'twa.init' });
  var f = d.getElementsByTagName('script')[0], j = d.createElement('script');
  j.async = true;j.src = u;
  f.parentNode.insertBefore(j, f);

})(window, document, 'tweakwiseLayer', _instanceKey, "https://navigator-analytics.tweakwise.com/bundles/scout.js");

analytics.subscribe("init", function(event) {
  _marketId = event.context?.localization?.market?.id ?? '';
  _webPresenceId = event.context?.localization?.market?.custom?.webPresenceId ?? '';
  _languageCode = event.context?.localization?.language?.isoCode ?? '';
});

function buildProductKey(variantId) {
  return _marketId + '_' + _webPresenceId + '_' + _languageCode + '_' + variantId;
}

analytics.subscribe("item_click", function(event){
  if(!tweakwiseLayer) {
    console.log('tweakwise - layer not present')
    return;
  }
  
  console.log('tweakwise - product clicked', event)

  tweakwiseLayer.push({
    event: 'itemClick',
    data: event.customData
  });
  
})

analytics.subscribe("product_viewed", function (event) {

  tweakwiseLayer.push({
    event: 'productView',
    data: {
      productKey: buildProductKey(event.data.productVariant.id)
    }
  });
  
})

analytics.subscribe("product_added_to_cart", function (event) {
  
  tweakwiseLayer.push({
    event: 'addtocart',
    data: {
      productKey: buildProductKey(event.data.cartLine?.merchandise.id),
      quantity: event.data.cartLine?.quantity,
      totalAmount: event.data.cartLine?.cost.totalAmount.amount,
    }
  });
  
})

analytics.subscribe("checkout_completed", function (event) {
  
  tweakwiseLayer.push({
    event: 'purchase',
    data: {
        productKeys: event.data.checkout.lineItems.map(o => buildProductKey(o.variant.id)),
        revenue: event.data?.checkout?.totalPrice?.amount
    }
  });
  
});