// Add weight limit into cart page for some product category or categories
add_action( 'woocommerce_check_cart_items', 'cldws_set_weight_requirements');
function cldws_set_weight_requirements() {
  if( is_cart() || is_checkout() ) {
    global $woocommerce;

    $product_in_cart = false;

    foreach ( $woocommerce->cart->get_cart() as $cart_item_key => $values ) {
        $_product = $values['data'];
        $terms = get_the_terms( $_product->id, 'product_cat' );

        foreach ($terms as $term) {
            $_categoryid = $term->term_id;
            if ( ($_categoryid === 132) || ($_categoryid === 129 ) || ($_categoryid === 135)  ) {
                $product_in_cart = true;
                $minimum_weight = 2000;
                $cart_contents_weight = WC()->cart->cart_contents_weight;
                if( $cart_contents_weight < $minimum_weight  ) {
                    wc_add_notice( sprintf('<strong>The error message. Minimal weight is %s%s.</strong>'
                        . '<br />Current weight of order: %s%s',
                        $minimum_weight,
                        get_option( 'woocommerce_weight_unit' ),
                        $cart_contents_weight,
                        get_option( 'woocommerce_weight_unit' ),
                        get_permalink( wc_get_page_id( 'shop' ) )
                        ),
                    'error' );
                } break 2;
            }
        }
    }
    return $product_in_cart;
  }
}

if (has_term('mrazene','product_shipping_class',$_product->id)) {
    $product_in_cart = true;
    $minimum_weight = 2000;
    $cart_contents_weight = WC()->cart->cart_contents_weight;
    if( $cart_contents_weight < $minimum_weight  ) {
        wc_add_notice( sprintf('<strong>The error message. Minimal weight is %s%s.</strong>'
        . '<br />Current weight: %s%s',
        $minimum_weight,
        get_option( 'woocommerce_weight_unit' ),
        $cart_contents_weight,
        get_option( 'woocommerce_weight_unit' ),
        get_permalink( wc_get_page_id( 'shop' ) )
    ),
    'error' );
} break 2;

$chosen_shipping_rates = WC()->session->get( 'chosen_shipping_methods' );

if ( ! in_array( 'local_pickup', $chosen_shipping_rates ) ) {
    if (has_term('mrazene','product_shipping_class',$_product->id)) {
        $product_in_cart = true;
        $minimum_weight = 2000;
        $cart_contents_weight = WC()->cart->cart_contents_weight;
        if( $cart_contents_weight < $minimum_weight  ) {
            wc_add_notice( sprintf('<strong>The error message. Minimal weight is %s%s.</strong>'
            . '<br />Current weight: %s%s',
            $minimum_weight,
            get_option( 'woocommerce_weight_unit' ),
            $cart_contents_weight,
            get_option( 'woocommerce_weight_unit' ),
            get_permalink( wc_get_page_id( 'shop' ) )
        ),
        'error' );
    } break 2;
}
endif;