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📝 Editing: Woocommerce.php

<?php
namespace NTA_WhatsApp\Support;

use NTA_WhatsApp\Fields;
use NTA_WhatsApp\Helper;
use NTA_WhatsApp\PostType;

defined('ABSPATH') || exit;

class Woocommerce
{
    protected static $instance = null;
    protected static $isInserted = false;
    private $activeAccounts = array();

public static function getInstance()
    {
        if (null == self::$instance) {
            self::$instance = new self;
            self::$instance->doHooks();
        }
        return self::$instance;
    }

public function __construct()
    {
    }

public function doHooks() {
        add_action('init', [$this, 'init']);
    }

public function isActiveWoocommerce(){
        if ( class_exists( 'woocommerce' )  && !Helper::isEnabledDokanVendor() ) { return true; }
        return false;
    }

public function init() {
        if ( !$this->isActiveWoocommerce() ) return;
        
        $postType = PostType::getInstance();
        $this->activeAccounts = $postType->get_active_woocommerce_accounts();
        $setting = Fields::getWoocommerceSetting();

add_filter('njt_whatsapp_is_page_or_shop_filter', array($this, 'isPageOrShop'), 10, 1);
        add_filter('njt_whatsapp_get_post_id_filter', array($this, 'getPostId'), 10, 1);

if (count($this->activeAccounts) === 0 || $setting['isShow'] === 'OFF') return;

if ($setting['position'] == 'after_atc') {
            add_action('woocommerce_after_add_to_cart_button', [$this, 'insert_button']);
        } elseif ($setting['position'] == 'before_atc') {
            add_action('woocommerce_before_add_to_cart_button', [$this, 'insert_button']);
        } elseif ($setting['position'] == 'after_short_description') {
            add_filter('woocommerce_short_description', [$this, 'showAfterShortDescription']);
        } elseif ($setting['position'] == 'after_long_description') {
            add_filter('the_content', [$this, 'showAfterLongDescription']);
        }

add_filter('woocommerce_get_stock_html', [$this, 'woocommerce_get_stock_html'], 10, 2);
    }

public function woocommerce_get_stock_html( $html, $product){
        $shouldDisplay = apply_filters('njt_wa_out_of_stock_display', false);

if ($product->is_in_stock() || !$shouldDisplay) {
            return $html;
        }

if (!self::$isInserted) {
            self::$isInserted = true;
        } else {
            return $html;
        }

foreach ($this->activeAccounts as $row) {
            $html .= '<div class="nta-woo-products-button">' . do_shortcode('[njwa_button id="' . esc_attr($row->ID) . '"]') . '</div>';
        }

return $html;
    }

public function getPostId($postId){
        if (is_shop()) return wc_get_page_id('shop');
        return $postId;
    }

public function isPageOrShop($isPage){
        if ($isPage === false && is_shop()) return true;
        return $isPage;
    }

public function showAfterShortDescription($post_excerpt)
    {
        if (!is_single() || empty($post_excerpt)) {
            return $post_excerpt;
        }
        if (!self::$isInserted) {
            self::$isInserted = true;
        } else {
            return $post_excerpt;
        }
        
        $btnContent = '';
        foreach ($this->activeAccounts as $row) {
            $btnContent .= '<div class="nta-woo-products-button">' . do_shortcode('[njwa_button id="' . $row->ID . '"]') . '</div>';
        }

return $post_excerpt . $btnContent;
    }

public function showAfterLongDescription($content)
    {
        if ('product' !== get_post_type() || !is_single()) {
            return $content;
        }
       
        $btnContent = '';
        foreach ($this->activeAccounts as $row) {
            $btnContent .= '<div class="nta-woo-products-button">' . do_shortcode('[njwa_button id="' . $row->ID . '"]') . '</div>';
        }

return $content . $btnContent;
    }

public function insert_button()
    {
        if (!self::$isInserted) {
            self::$isInserted = true;
        } else {
            return;
        }

foreach ($this->activeAccounts as $row) {
            echo '<div class="nta-woo-products-button">' . do_shortcode('[njwa_button id="' . esc_attr($row->ID) . '"]') . '</div>';
        }
    }
}