purchase datalayer script

window.dataLayer = window.dataLayer || [];
window.dataLayer.push({
  event: 'GA4_purchase',            // name of the event. In this case, it always must be purchase
  ecommerce: {
    currency: 'USD',
    value: 49.00,                       // order total (price of all products + shipping). If you want, it can be only price of all products
    tax: 3.00,                          // tax
    shipping: 5.00,                 // shipping costs
    transaction_id: 'abc123',           // transaction id
    coupon: 'ENDOFSUMMER',          // if coupon was applied to the order, include it here
    items: [{                           // an array with all products
      item_name: 'Ground Criollo Beef',           // insert an actual product name
      item_id: 'product1',              // insert an actual product ID
      price: 25.99,                 // insert an actual product price. Number or a string. Don't include currency code
      item_brand: 'brand A',            // insert an actual product brand
      item_category: 'Criollo Beef',         // insert an actual product top-level category
      quantity: '1',                    // product quantity
      item_coupon: 'SUMMER20'           // if a coupon was applied not to the entire order but to one product, use item_coupon
    },{
      item_name: 'Tenderloin Filet',
      item_id: 'product2',
      price: 15.99,
      item_brand: 'Brand B',
      item_category: 'Premium Steaks',
      quantity: '1'
    }]
  }
});