WooCommerce

// =============================================================
// CHANGE PLACE ORDER TEXT
// =============================================================
add_filter('woocommerce_order_button_html', 'change_place_order_button');

function change_place_order_button($button_html){
    $button_html = str_replace('Place order', 'Order Now', $button_html);
    return $button_html;
}

function tax_excluded_price_per_user_role( $value ) {
    if ( current_user_can( 'wholesale_customer' ) ) {
        return 'excl';
    }
    return $value;
}
add_filter( 'pre_option_woocommerce_tax_display_shop', 'tax_excluded_price_per_user_role' );
add_filter( 'pre_option_woocommerce_tax_display_cart', 'tax_excluded_price_per_user_role' );

// =========================================================================
// SHOW PRICE IN EURO
// ========================================================================= 
function show_price_in_euro(){
    global $product;
    
     if( $product->has_child() ) {
        $product->get_id();
        $var_price_huf = $product->get_variation_price( 'min', true );
        $exchange_rate = 360;
        $price_eur = $var_price_huf / $exchange_rate;
        echo '<span class="price euro"><span class="woocommerce-Price-amount amount eur">'.round($price_eur, 1).' €</span></span>';
    }
    else{
        $product->get_id();
        $price_huf = $product->get_price(); 
        $exchange_rate = 360;
        $price_eur = $price_huf / $exchange_rate;
        echo '<span class="price euro"><span class="woocommerce-Price-amount amount eur">'.round($price_eur, 1).' €</span></span>';
    }
}
add_action('woocommerce_after_shop_loop_item', 'show_price_in_euro',-1);

// =========================================================================
// MINIMUM ORDER AMOUNT FOR SPECIFIC SHIPPING METHOD
// =========================================================================
function minimum_order_amount_for_shipping( $rates, $package ) {
   $threshold = 100;
   if ( WC()->cart->subtotal < $threshold ) {
         unset( $rates['flat_rate:2'] );
   } 
   return $rates;
}
add_filter( 'woocommerce_package_rates', 'minimum_order_amount_for_shipping', 10, 2 );

// =========================================================================
// SHOW THE PERCENTAGE VALUE OF DISCOUNT PRODUCTS
// =========================================================================
function woocommerce_custom_sales_price( $price, $regular_price, $sale_price ) {
    global $product;
    if( $product->has_child() ) {
        $var_regular_price = $product->get_variation_regular_price( 'min', true );
        $var_sale_price = $product->get_variation_price( 'min', true );
        
        $percentage = round( ( $var_regular_price - $var_sale_price ) / $var_regular_price * 100 ).'%';
        $percentage_txt = ' ' . __('<span class="sale-percentage"> -', 'woocommerce' , '</span>') . $percentage;
        $price = '<del>' . ( is_numeric( $regular_price ) ? wc_price( $regular_price ) : $regular_price ) . '</del> <ins>' . ( is_numeric( $sale_price ) ? wc_price( $sale_price ) . $percentage_txt : $sale_price . $percentage_txt ) . '</ins>';
        return $price;
    }
    else{
        $percentage = round( ( $regular_price - $sale_price ) / $regular_price * 100 ).'%';
        $percentage_txt = ' ' . __('<span class="sale-percentage"> -', 'woocommerce' , '</span>') . $percentage;
        $price = '<del>' . ( is_numeric( $regular_price ) ? wc_price( $regular_price ) : $regular_price ) . '</del> <ins>' . ( is_numeric( $sale_price ) ? wc_price( $sale_price ) . $percentage_txt : $sale_price . $percentage_txt ) . '</ins>';
        return $price;
    }
}
add_filter( 'woocommerce_format_sale_price', 'woocommerce_custom_sales_price', 10, 3 );

// =========================================================================
// ADD EXTRA FEE BASED ON SHIPPING METHOD
// =========================================================================
add_action( 'woocommerce_cart_calculate_fees','wc_add_surcharge' ); 
function wc_add_surcharge() { 
    
    global $woocommerce; 

    if ( is_admin() && ! defined( 'DOING_AJAX' ) ) 
        
    return;
    
    $chosen_methods = WC()->session->get( 'chosen_shipping_methods' );
          
    $chosen_shipping = $chosen_methods[0];
    
    $fee = 10;

    if ( $chosen_shipping == 'flat_rate:2' ) {
        $woocommerce->cart->add_fee( 'Extra fee: ', $fee, true, 'standard' );  
    }
}

// =========================================================================
// CUSTOM TERMS AND CONDITIONS CHECKBOX IN WOO
// =========================================================================
function add_checkbox_to_woocommerce_checkout() {
    ?>
    <p id="wpgdprc_field" class="form-row wpgdprc-checkbox validate-required">
       <span class="woocommerce-input-wrapper">
        <label class="checkbox">
            <input id="wpgdprc" type="checkbox" value="1" class="input-checkbox" name="wpgdprc" > 
            <span class="gdpr-privacy">I've read and accept the  <a target="_blank" href="/terms-and-conditions/">Terms and Conditions</a></span>
            <abbr class="wpgdprc-required required" title="This field is required">*</abbr>
        </label>
        </span>
      
    </p>
    <?php
}
add_action('woocommerce_checkout_after_terms_and_conditions', 'add_checkbox_to_woocommerce_checkout' );

// =========================================================================
// CHANGE RELATED PRODUCTS TEXT TO YOU MAY ALSO LIKE TEXT
// =========================================================================  
function change_you_may_also_like( $translated ) {
   $translated = str_replace( 'Related products', 'You may also like...', $translated );
   return $translated;
}
add_filter( 'gettext', 'change_you_may_also_like' );

// =========================================================================
// CHANGE ON SALE TEXT
// =========================================================================
function woocommerce_custom_sale_text($text, $post, $_product){
    return '<span class="onsale">Special offer</span>';
}
add_filter('woocommerce_sale_flash', 'woocommerce_custom_sale_text', 10, 3);

// =========================================================================
// CHANGE ADDITIONAL INFORMATION TEXT
// =========================================================================
/* @return string Modified value for product's "Additional information" text. */
function wpdd_change_additional_information_heading() {
    global $product;
    if( $product->id == 2028 ){
	   return __( 'Further information', 'mytextdomain' );
    }elseif($product->id == 2027){
	   return __( 'En savoir plus', 'mytextdomain' );
    }else{
        return __( 'További információk', 'woocommerce' );
    }
}
add_filter( 'woocommerce_product_additional_information_heading', 'wpdd_change_additional_information_heading' );

// =========================================================================
// CHANGE ADD TO CART BUTTON TEXT ON SPECIFIC PAGES
// =========================================================================
function translate_add_to_cart() {
    global $product;
    if( $product->id == 2028 ){
        return __( 'Add to basket', 'woocommerce' );
    } elseif($product->id == 2027){
        return __( 'Buy now', 'woocommerce' );
        }
    else{
        return __( 'Add to cart', 'woocommerce' );
    }
}
add_filter( 'woocommerce_product_single_add_to_cart_text', 'translate_add_to_cart', 10, 3 );

// =========================================================================
// DISPLAY PRODUCT CATEGORIES
// =========================================================================
function woocommerce_product_category( $args = array() ) {
    $woocommerce_category_id = get_queried_object_id();
  $args = array(
      'parent' => $woocommerce_category_id
  );
  $terms = get_terms( 'product_cat', $args );
  if ( $terms ) {
      echo '<ul id="myFilter" class="woocommerce-categories">';
      foreach ( $terms as $term ) {
          echo '<li class="woocommerce-product-category-page">';
              echo '<a href="' .  esc_url( get_term_link( $term ) ) . '" class="btn-filter ' . $term->slug . '">';
                echo $term->name;
              echo '</a>';
          echo '</li>';
      }
      echo '</ul>';
  }
}
add_action( 'woocommerce_archive_description', 'woocommerce_product_category', 10 );

// =========================================================================
// REMOVE ADDITIONAL INFORMATION TAB
// =========================================================================
add_filter( 'woocommerce_product_tabs', 'remove_additional_information_tab', 100, 1 );
function remove_additional_information_tab( $tabs ) {
    unset($tabs['additional_information']);

    return $tabs;
}

// =========================================================================
// ADD ADDITIONAL INFORMATION AFTER ADD TO CART
// =========================================================================
add_action( 'woocommerce_single_product_summary', 'additional_info_under_add_to_cart', 35 );
function additional_info_under_add_to_cart() {
    global $product;

    if ( $product && ( $product->has_attributes() || apply_filters( 'wc_product_enable_dimensions_display', $product->has_weight() || $product->has_dimensions() ) ) ) {
        wc_display_product_attributes( $product );
    }
}

// =========================================================================
// Custom Text on Product Page based on Shipping Class 
// =========================================================================
function display_shipping_class_on_product_page() {
    $product = wc_get_product();

    $shipping_class = $product->get_shipping_class();

    switch ( $shipping_class ) {
        case 'your_shipping_class_1':
            echo '';
            break;
        case 'your_shipping_class_2':
            echo '';
            break;
    }
}
add_action( 'woocommerce_single_product_summary', 'display_shipping_class_on_product_page', 10 );