Display Estimated Delivery Date

/**
 * Snippet Name:     Display Estimated Delivery Date
 * Snippet Author:   coding-bunny.com
 * Description:      Displays an estimated delivery date range on the WooCommerce product page based on the day of order.
 */
 
add_action( 'woocommerce_after_add_to_cart_button', 'cb_display_estimated_delivery' );

function cb_display_estimated_delivery() {
    date_default_timezone_set( 'Europe/Rome' );

    // Get the current day of the week (1 = Monday, 7 = Sunday)
    $day_of_week = date( 'N' );

    // Calculate the estimated delivery day based on the order day
    switch ( $day_of_week ) {
        case 1: // Monday
            $delivery_day = date_i18n( 'l j F', strtotime( '+2 days' ) );
            break;
        case 2: // Tuesday
            $delivery_day = date_i18n( 'l j F', strtotime( '+2 days' ) );
            break;
        case 3: // Wednesday
            $delivery_day = date_i18n( 'l j F', strtotime( '+2 days' ) );
            break;
        case 4: // Thursday
            $delivery_day = date_i18n( 'l j F', strtotime( '+4 days' ) );
            break;
        case 5: // Friday
            $delivery_day = date_i18n( 'l j F', strtotime( '+4 days' ) );
            break;
        case 6: // Saturday
            $delivery_day = date_i18n( 'l j F', strtotime( '+3 days' ) );
            break;
        case 7: // Sunday
            $delivery_day = date_i18n( 'l j F', strtotime( '+2 days' ) );
            break;
        default:
            $delivery_day = date_i18n( 'l j F', strtotime( '+3 days' ) ); // Default case for safety
    }

    // Convert delivery day text to lowercase
    $delivery_day = strtolower( $delivery_day );

    // Display the estimated delivery information on the WooCommerce product page
    echo '<div class="estimate-delivery">';
    echo '<i class="fa-solid fa-truck-fast"></i>';
    echo '<span> Estimated delivery by </span>';
    echo '<span><strong>' . esc_html( $delivery_day ) . '</strong></span>';
    echo '</div>';
}