Incompatible with custom product types

Hi there,

I’m the author of WooCommerce Mix and Match products, which creates a custom product type. A customer came to me in support today to ask why the Mix and Match product’s add to cart button reads “Read More”. Upon investigation it is because that’s the default from your custom add to cart labels plugin for a product type that is not explicitly supported. Instead, I’d like to propose that you default to the existing add to cart text when nothing is changed via your plugin settings.

I would send a pull request, but your Github repo links back to your WordPress plugin page.

Here are the modifications I’d like to propose…
1. Don’t check if Woo is active via activated plugins setting. None of the filters exist is Woo is not active, so it’s redundant.
2. Separate custom_woocommerce_product_add_to_cart_text into custom_woocommerce_product_add_to_cart_text and custom_woocommerce_product_single_add_to_cart_text
3. Pass $product to those functions automatically.
4. Remove translation functions from settings values as they are useless for dynamic settings.
5. Add translations functions for settings titles/descriptions (and use unique text domain).

Here is the resulting code:

<?php
/*
 Plugin Name: WC Custom Add to Cart labels
 Plugin URI: https://profiles.www.ads-software.com/rynald0s
 Description: This plugin lets you change the "add to cart" labels on single product pages (per product type) and archive / shop page (per product type). 
 Author: Rynaldo Stoltz
 Author URI: https://github.com/rynaldos
 Version: 1.3
 License: GPLv3 or later License
 URI: https://www.gnu.org/licenses/gpl-3.0.html
 */

if ( ! defined( 'ABSPATH' ) ) { 
    exit; // Exit if accessed directly
}

/**
 * Add settings
 */

function catcl_section( $sections ) {
    $sections['catcl_section'] = __( 'Add to cart button labels', 'wc-add-to-cart-labels' );
    return $sections;
}
add_filter( 'woocommerce_get_sections_products', 'catcl_section' );

function catcl_settings( $settings, $current_section ) {
    
    /**
     * Check the current section is what we want
     **/
    if ( 'catcl_section' === $current_section ) {

        $settings[] = array( 'title' => __( 'Change the "add to cart" button label on single product pages (per product type)', 'wc-add-to-cart-labels' ), 'type' => 'title', 'id' => 'wc_atc_change' );

        $settings[] = array(
                'title'    => __( 'Simple products', 'wc-add-to-cart-labels' ),
                'desc' => __( 'This will change the "add to cart" label shown on single product page of simple product type', 'wc-add-to-cart-labels' ),
                'id'       => 'simple_button_text_single',
                'type'     => 'text',
                'placeholder' => 'Add to cart',
                'css'      => 'min-width:350px;',
            );

        $settings[] = array(
                'title'    => __( 'Grouped products', 'wc-add-to-cart-labels' ),
                'desc' => __( 'This will change the "add to cart" label shown on single product page of grouped product type', 'wc-add-to-cart-labels' ),
                'id'       => 'grouped_button_text_single',
                'type'     => 'text',
                'placeholder' => 'Add to cart',
                'css'      => 'min-width:350px;',
            );

        $settings[] = array(
                'title'    => __( 'External products', 'wc-add-to-cart-labels' ),
                'desc' => __( 'This will change the "add to cart" label shown on single product page of external product type', 'wc-add-to-cart-labels' ),
                'id'       => 'external_button_text_single',
                'type'     => 'text',
                'placeholder' => 'Add to cart',
                'css'      => 'min-width:350px;',
            );

        $settings[] = array(
                'title'    => __( 'Variable products', 'wc-add-to-cart-labels' ),
                'desc' => __( 'This will change the "add to cart" label shown on single product page of variable product type', 'wc-add-to-cart-labels' ),
                'id'       => 'variable_button_text_single',
                'type'     => 'text',
                'placeholder' => 'Add to cart',
                'css'      => 'min-width:350px;',
            );

        $settings[] = array(
                'title'    => __( 'Bookable products', 'wc-add-to-cart-labels' ),
                'desc' => __( 'This will change the "add to cart" label shown on single product page of bookable product type', 'wc-add-to-cart-labels' ),
                'id'       => 'booking_button_text_single',
                'type'     => 'text',
                'placeholder' => 'Add to cart',
                'css'      => 'min-width:350px;',
            );

        $settings[] = array(
                'title'    => __( 'Subscription products', 'woocommerce-subscriptions' ),
                'desc' => __( 'This will change the "add to cart" label shown on single product page of subscription product type', 'wc-add-to-cart-labels' ),
                'id'       => 'subs_button_text_single',
                'type'     => 'text',
                'placeholder' => 'Sign up now',
                'css'      => 'min-width:350px;',
            );

        $settings[] = array(
                'title'    => __( 'Variable subscription products', 'woocommerce-subscriptions' ),
                'desc' => __( 'This will change the "add to cart" label shown on the single product page of variable subscription product type', 'wc-add-to-cart-labels' ),
                'id'       => 'subs_var_button_text_single',
                'type'     => 'text',
                'placeholder' => 'Sign up now',
                'css'      => 'min-width:350px;',
            );

        $settings[] = array( 'type' => 'sectionend', 'id' => 'wc_atc_change' );

        $settings[] = array( 'title' => __( 'Change the "add to cart" button label on archive / shop page (per product type)', 'wc-add-to-cart-labels' ), 'type' => 'title', 'id' => 'wc_atc_change' );

        $settings[] = array(
                'title'    => __( 'Simple products (archive)', 'wc-add-to-cart-labels' ),
                'desc' => __( 'This will change the "add to cart" label on simple products that are shown on the archive page', 'wc-add-to-cart-labels' ),
                'id'       => 'simple_button_text',
                'type'     => 'text',
                'placeholder' => 'Add to cart',
                'css'      => 'min-width:350px;',
            );

        $settings[] = array(
                'title'    => __( 'Grouped products (archive)', 'wc-add-to-cart-labels' ),
                'desc' => __( 'This will change the "add to cart" label on grouped products that are shown on the archive page', 'wc-add-to-cart-labels' ),
                'id'       => 'grouped_button_text',
                'type'     => 'text',
                'placeholder' => 'Add to cart',
                'css'      => 'min-width:350px;',
            );

        $settings[] = array(
                'title'    => __( 'External products (archive)', 'wc-add-to-cart-labels' ),
                'desc' => __( 'This will change the "add to cart" label on external products that are shown on the archive page', 'wc-add-to-cart-labels' ),
                'id'       => 'external_button_text',
                'type'     => 'text',
                'placeholder' => 'Add to cart',
                'css'      => 'min-width:350px;',
            );

        $settings[] = array(
                'title'    => __( 'Variable products (archive)', 'wc-add-to-cart-labels' ),
                'desc' => __( 'This will change the "add to cart" label on variable products that are shown on the archive page', 'wc-add-to-cart-labels' ),
                'id'       => 'variable_button_text',
                'type'     => 'text',
                'placeholder' => 'Add to cart',
                'css'      => 'min-width:350px;',
            );

        $settings[] = array(
                'title'    => __( 'Bookable products (archive)', 'wc-add-to-cart-labels' ),
                'desc' => __( 'This will change the "add to cart" label on bookable products that are shown on the archive page', 'wc-add-to-cart-labels' ),
                'id'       => 'booking_button_text',
                'type'     => 'text',
                'placeholder' => 'Add to cart',
                'css'      => 'min-width:350px;',
            );

        $settings[] = array(
                'title'    => __( 'Subscription products (archive)', 'wc-add-to-cart-labels' ),
                'desc' => __( 'This will change the "add to cart" label on subscription products that are shown on the archive page', 'wc-add-to-cart-labels' ),
                'id'       => 'subs_button_text',
                'type'     => 'text',
                'placeholder' => 'Sign up now',
                'css'      => 'min-width:350px;',
            );

        $settings[] = array(
                'title'    => __( 'Variable subscription products (archive)', 'wc-add-to-cart-labels' ),
                'desc' => __( 'This will change the "add to cart" label on variable subscription products that are shown on the archive page', 'wc-add-to-cart-labels' ),
                'id'       => 'subs_var_button_text',
                'type'     => 'text',
                'placeholder' => 'Sign up now',
                'css'      => 'min-width:350px;',
            );

        $settings[] = array( 'type' => 'sectionend', 'id' => 'wc_atc_change' );
    }

    return $settings;
}
add_filter( 'woocommerce_get_settings_products','catcl_settings', 10, 2 );

function custom_woocommerce_product_single_add_to_cart_text($text, $product) {

    $custom_text = '';

    switch ( $product->get_type() ) {
        case 'simple':
            $custom_text = catcl_get_settings( 'simple_button_text_single');
        break;
        case 'grouped':
            $custom_text = catcl_get_settings( 'grouped_button_text_single');
        break;
        case 'external':
            $custom_text = catcl_get_settings( 'external_button_text_single');
        break;
        case 'variable':
            $custom_text = catcl_get_settings( 'variable_button_text_single');
        break;
        case 'booking':
            $custom_text = catcl_get_settings( 'booking_button_text_single');
        break;
        case 'subscription':
            $custom_text = catcl_get_settings( 'subs_button_text_single');
        break;
        case 'variable-subscription':
            $custom_text = catcl_get_settings( 'subs_var_button_text_single');
        break;

    }

    return '' !== $custom_text ? $custom_text : $text;
}
add_filter( 'woocommerce_product_single_add_to_cart_text', 'custom_woocommerce_product_single_add_to_cart_text', 10, 2 );
add_filter( 'woocommerce_booking_single_add_to_cart_text', 'custom_woocommerce_product_single_add_to_cart_text', 10, 2 );

function custom_woocommerce_product_add_to_cart_text($text, $product) {

    $custom_text = '';

    switch ( $product->get_type() ) {
        case 'simple':
            $custom_text = catcl_get_settings( 'simple_button_text');
        break;
        case 'grouped':
            $custom_text = catcl_get_settings( 'grouped_button_text');
        break;
        case 'external':
            $custom_text = catcl_get_settings( 'external_button_text');
        break;
        case 'variable':
            $custom_text = catcl_get_settings( 'variable_button_text');
        break;
        case 'booking':
            $custom_text = catcl_get_settings( 'booking_button_text');
        break;
        case 'subscription':
            $custom_text = catcl_get_settings( 'subs_button_text');
        break;
        case 'variable-subscription':
            $custom_text = catcl_get_settings( 'subs_var_button_text');
        break;

    }

    return '' !== $custom_text ? $custom_text : $text;
}
add_filter( 'woocommerce_product_add_to_cart_text' , 'custom_woocommerce_product_add_to_cart_text', 10, 2 );

function catcl_get_settings( $key ) {
    return get_option( $key, '' );
}

`