Shopping Cart

function solve() {
   let divSelectedElement = document.querySelector('div.shopping-cart');
   let textareaElement = document.querySelector('div textarea');
   let checkoutButtonElement = document.querySelector('button.checkout');
   let productList = [];
   let totalPrice = 0;

   function addProduct(e) {
      if(e.target.classList.value == 'add-product') {
         let divProduct = e.target.parentNode.parentNode;
         let product = divProduct.querySelector('.product-title').textContent;
         let price = divProduct.querySelector('.product-line-price').textContent;
         textareaElement.value += `Added ${product} for ${Number(price).toFixed(2)} to the cart.\n`;

         if(!productList.includes(product)) {
            productList.push(product);
         }

         totalPrice += Number(price);
      }
   }

   function checkoutClicked() {
      textareaElement.value += `You bought ${productList.join(', ')} for ${totalPrice.toFixed(2)}.`;

      disableButtons();
   }

   function disableButtons() {
      let buttons = document.querySelectorAll('button');

      for(let button of buttons) {
         button.disabled = true;
      }
   }

   divSelectedElement.addEventListener('click', addProduct);
   checkoutButtonElement.addEventListener('click', checkoutClicked);
}