(function() {
    window.toggleWishlist = function(itemId) {
        var btn = document.getElementById('wishlist-btn');
        fetch('/api/wishlists/' + itemId, { method: 'POST', headers: csrfHeaders() })
            .then(function(r) { return r.json(); })
            .then(function(data) {
                if (data.wishlisted) {
                    btn.textContent = 'Wishlisted';
                } else {
                    btn.textContent = 'Add to Wishlist';
                }
            });
    };

    window.toggleCart = function(itemId) {
        var btn = document.getElementById('cart-btn');
        fetch('/api/cart/' + itemId, { method: 'POST', headers: csrfHeaders() })
            .then(function(r) { return r.json(); })
            .then(function(data) {
                if (data.in_cart) {
                    btn.textContent = 'In Cart';
                    showToast('Added to cart. Buying multiple items together saves the creator on processing fees.', 'info');
                } else {
                    btn.textContent = 'Add to Cart';
                }
            })
            .catch(function(err) {
                showToast(err.message || 'Failed to update cart');
            });
    };
})();