Add custom avaibility in stock status Woocommerce

Add custom avaibility in stock status Woocommerce.php

<?

/*
 * Add custom avaibility in stock status Woocommerce
 */

// Add new stock status options
function filter_woocommerce_product_stock_status_options( $status ) {
    // Add new statuses
    $status['in_arrivo'] = __( 'In arrivo', 'woocommerce' );
    $status['10_gg'] = __( 'Disponibile in 10 giorni', 'woocommerce' );

    return $status;
}
add_filter( 'woocommerce_product_stock_status_options', 'filter_woocommerce_product_stock_status_options', 10, 1 );

// Availability text
function filter_woocommerce_get_availability_text( $availability, $product ) {
    switch( $product->get_stock_status() ) {
        case 'in_arrivo':
            $availability = __( 'In arrivo', 'woocommerce' );
        break;
        case '10_gg':
            $availability = __( 'Disponibile in 10 giorni', 'woocommerce' ); 
        break;
    }

    return $availability; 
}
add_filter( 'woocommerce_get_availability_text', 'filter_woocommerce_get_availability_text', 10, 2 );

// Availability class
function filter_woocommerce_get_availability_class( $class, $product ) {
    switch( $product->get_stock_status() ) {
        case 'in_arrivo':
            $class = 'in_arrivo'; 
        break;
        case '10_gg':
            $class = '10_gg'; 
        break;
    }

    return $class;
}
add_filter( 'woocommerce_get_availability_class', 'filter_woocommerce_get_availability_class', 10, 2 );

// admin stock html
function filter_woocommerce_admin_stock_html( $stock_html, $product ) {
	if( $product->is_type( 'variable' ) ){
	  foreach( $product->get_visible_children() as $variation_id ){
        $variation = new WC_Product_Variation( $variation_id );

    switch( $variation->get_stock_status() ) {
        case 'in_arrivo':
            $stock_html = '<mark class="in_arrivo" style="background:none;color:#eaa600;font-weight:700;line-height:1;">' . __( 'In arrivo', 'woocommerce' ) . '</mark>'; 
        break;
        case '10_gg':
            $stock_html = '<mark class="10_gg" style="background:none;color:#eaa600;font-weight:700;line-height:1;">' . __( 'Disponibile in 10 giorni', 'woocommerce' ) . '</mark>'; 
        break;
    }   
    return $stock_html;
}
} elseif ( $product->is_type( 'simple' ) ){
		switch( $product->get_stock_status() ) {
        case 'in_arrivo':
            $stock_html = '<mark class="in_arrivo" style="background:none;color:#eaa600;font-weight:700;line-height:1;">' . __( 'In arrivo', 'woocommerce' ) . '</mark>'; 
        break;
        case '10_gg':
            $stock_html = '<mark class="10_gg" style="background:none;color:#eaa600;font-weight:700;line-height:1;">' . __( 'Disponibile in 10 giorni', 'woocommerce' ) . '</mark>'; 
        break;
    }   
    return $stock_html;
		
	}
	
}
add_filter( 'woocommerce_admin_stock_html', 'filter_woocommerce_admin_stock_html', 10, 2 );

/*
 * Style select and option dropdown stock status in head admin - Product option page - Woocommerce
 */

add_action('admin_footer', 'my_custom_fonts');

function my_custom_fonts() {
  echo '<style>
[value*="instock"] {
    background-color: green;
	color: #fff;
}
[value*="outofstock"] {
    background: red;
	color: #fff;
}
[value*="onbackorder"], [value*="in_arrivo"], [value*="10_gg"] {
    background: orange;
	color: black;
}
</style>';
}