I want to add a field where the discount coupon can be added from the cart and apply such discount to the items before checkout. I’ve been doing research on cart discounts and have seen documentation where it talks about at https://shopify.dev/themes/pricing-payments/discounts
But when I want to use those variables, they don’t apply to discount coupons. only for automatic discounts. The only thing I’ve found are apps like Dcode that do this. I have seen responses in other threads about this, but not an official response on whether the only way to access and apply discounts within the cart is through apps. Is it possible to do this without the need for a custom App?