Auto add all product attributes when adding a new product in Woocommerce

Question

A client of mine requested this weird change based on Wordpress' plugin Woocommerce in order to make things "easier"..

Is it somehow possible to have all product attributes automatically added when a product is created?

Also is it possible to have the "Visible on product page" checkbox automatically disabled if there is no value inputted in the attribute?

Any help will be very much appreciated.

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Edit (explanation):

This is what was explained above :

Answer 1

Here is the way to auto add all existing product variations + terms when creating a new product.

The code (commented):

add_action( 'save_post', 'auto_add_product_attributes', 50, 3 );
function auto_add_product_attributes( $post_id, $post, $update  ) {

    ## --- Checking --- ##

    if ( $post->post_type != 'product') return; // Only products

    // Exit if it's an autosave
    if ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE )
        return $post_id;

    // Exit if it's an update
    if( $update )
        return $post_id;

    // Exit if user is not allowed
    if ( ! current_user_can( 'edit_product', $post_id ) )
        return $post_id;

    ## --- The Settings for your product attributes --- ##

    $visible   = ''; // can be: '' or '1'
    $variation = ''; // can be: '' or '1'

    ## --- The code --- ##

    // Get all existing product attributes
    global $wpdb;
    $attributes = $wpdb->get_results( "SELECT * FROM {$wpdb->prefix}woocommerce_attribute_taxonomies" );

    $position   = 0;  // Auto incremented position value starting at '0'
    $data       = array(); // initialising (empty array)

    // Loop through each exiting product attribute
    foreach( $attributes as $attribute ){
        // Get the correct taxonomy for product attributes
        $taxonomy = 'pa_'.$attribute->attribute_name;
        $attribute_id = $attribute->attribute_id;

        // Get all term Ids values for the current product attribute (array)
        $term_ids = get_terms(array('taxonomy' => $taxonomy, 'fields' => 'ids'));

        // Get an empty instance of the WC_Product_Attribute object
        $product_attribute = new WC_Product_Attribute();

        // Set the related data in the WC_Product_Attribute object
        $product_attribute->set_id( $attribute_id );
        $product_attribute->set_name( $taxonomy );
        $product_attribute->set_options( $term_ids );
        $product_attribute->set_position( $position );
        $product_attribute->set_visible( $visible );
        $product_attribute->set_variation( $variation );

        // Add the product WC_Product_Attribute object in the data array
        $data[$taxonomy] = $product_attribute;

        $position++; // Incrementing position
    }
    // Get an instance of the WC_Product object
    $product = wc_get_product( $post_id );

    // Set the array of WC_Product_Attribute objects in the product
    $product->set_attributes( $data );

    $product->save(); // Save the product
}

Code goes in function.php file of your active child theme (or active theme). tested and works.