disable dates by category

gistfile1.txt

add_filter('pisol_dtt_date_sort', function($dates) {
	// Define restricted product categories
	$restricted_categories = array( 19, 22 );
	
	// Check if products from restricted categories are in the cart
	$cart = WC()->cart->get_cart();
	$has_restricted_category = false;
	
	if ( $cart ) {
		foreach ( $cart as $cart_item ) {
			$product_id = $cart_item['product_id'];
			$product_cats = wp_get_post_terms( $product_id, 'product_cat', array( 'fields' => 'ids' ) );
			
			if ( array_intersect( $restricted_categories, $product_cats ) ) {
				$has_restricted_category = true;
				break;
			}
		}
	}
	
	// If restricted products are in cart, filter out restricted dates
	if ( $has_restricted_category ) {
		$restricted_dates = array( '2025/12/24', '2025/12/25', '2025/12/26', '2025/12/31', '2026/01/01', '2026/01/02' );
		$filtered_dates = array();
		
		foreach ( $dates as $date ) {
			// Skip if date matches restricted dates
			if ( in_array( $date, $restricted_dates ) ) {
				continue;
			}
			
			// Skip if date falls on Sunday (0 = Sunday in strtotime)
			$timestamp = strtotime( str_replace( '/', '-', $date ) );
			if ( $timestamp && date( 'w', $timestamp ) == 0 ) {
				continue;
			}
			
			$filtered_dates[] = $date;
		}
		
		return $filtered_dates;
	}
	
	return $dates;
}, PHP_INT_MAX, 1 );