Group simple/variations and group all variations that had same parent

woocommerce-group-products.php

/**
 * Title: Group simple/variations
 * Author Mattias Ghodsian
 * Description: Group simple/variations and group all variations that had same parent
 * Donate a cup of coffee: https://www.buymeacoffee.com/mattiasghodsian
 **/

function wooGroupProducts(){
	$args = array( 'post_type' => 'product', 'posts_per_page' => -1 );
	$loop = new WP_Query( $args );
	$data = [];

	if ( $loop->have_posts() ) {
        while ( $loop->have_posts() ) : $loop->the_post();
        	global $product; 

        	if ($product->is_type( 'variable' )) 
			{
			    $available_variations = $product->get_available_variations();
			    foreach ($available_variations as $variation) 
			    { 
			    	$nkey = str_replace( [',','.','-',' '], '_', strtolower($product->name));
			        $variation['productName'] = $product->name;
				    $data['variation'][$nkey][] = $variation;
			    }
			}else{
				$data['simple'][] = (array)$product;
			}

        endwhile;
    } else {
       return 'No products found';
    }
	
	wp_reset_postdata();
	return $data;
}