PVT Support for Second Image using Additional Variation Images Gallery

class_pvtfw_common.php

<?php 

require_once( plugin_dir_path( __DIR__ ) . 'product-variant-table-for-woocommerce.php');

class PVTFW_COMMON{

    /**
    *
    * On install selected columns
    *
    **/
    function get_default_columns(){
        $columns = array(
            'image_link' => "on",
            'image_link_additional' => "on",
            'sku' => "on",
            'variation_description' => "on",
            'attributes' => "off",
            'dimensions_html' => "off",
            'weight_html' => "off",
            'availability_html' => "on",
            'price_html' => "on",
            'quantity' => "on",
            'action' => "on",
        );

        return apply_filters('pvtfw_columns_array', $columns);
    }

    /**
    *
    * Label name initialized
    *
    **/
    function get_columns_labels(){
        $default_column_lables = array(
            'image_link' => __('Thumbnail', 'product-variant-table-for-woocommerce'),
            'image_link_additional' => __('Second Thumbnail', 'product-variant-table-for-woocommerce'),
            'sku' => __('SKU', 'product-variant-table-for-woocommerce'),
            'variation_description' => __('Description', 'product-variant-table-for-woocommerce'),
            'attributes' => __('Attributes', 'product-variant-table-for-woocommerce'),
            'dimensions_html' => __('Dimensions', 'product-variant-table-for-woocommerce'),
            'weight_html' => __('Weight', 'product-variant-table-for-woocommerce'),
            'availability_html' => __('Stock', 'product-variant-table-for-woocommerce'),
            'price_html' => __('Price', 'product-variant-table-for-woocommerce'),
            'quantity' => __('Quantity', 'product-variant-table-for-woocommerce'),
            'action' => __('Action', 'product-variant-table-for-woocommerce'),
        );

        $columns_labels_filter = apply_filters( 'pvtfw_columns_labels', $default_column_lables );

        return $columns_labels_filter;
    }


    /**
    *
    * Table container class
    *
    **/

    public static function container( $data ){
        if( empty($data) ){
            return;
        } 
        else{
            $classes = implode(' ', $data);
            return $classes;
        }
    }
}

$pvtfw_common = new PVTFW_COMMON();

content-tbody.php

<?php

    require_once(dirname(plugin_dir_path(__FILE__)) . '/class_pvtfw_common.php');

    /**
     * Initialization Start
     */
    global $product, $pvtfw_common;
    
    $product_id =  $product->get_id();  
    $handle = new WC_Product_Variable($product->get_id());
    $variations = $handle->get_children();

    $default_columns = $pvtfw_common->get_default_columns();
    $columns_labels = $pvtfw_common->get_columns_labels();
    $columns = get_option('pvtfw_variant_table_columns', $default_columns);

    /**
     * Initialization End
     */

    $options = apply_filters( 'pvtfw_process_data_option',  array() );
	$cart_url = home_url();
	$product_url = get_permalink( $product->get_id() );
	$product_id = $product->get_id();

	$qty_layout = get_option('pvtfw_variant_table_qty_layout', 'plus/minus');

	//Getting Cart Text
	$btn_text =  get_option('pvtfw_variant_table_cart_btn_text');

	if(!$btn_text){
		$text = __('Add To Cart', 'product-variant-table-for-woocommerce');
	} 
	else{
		$text = $btn_text;
	}

	foreach ($variations as $value) {

		$single_variation = new WC_Product_Variation($value);

		if( $single_variation->variation_is_visible() ):

			$variant_id = $single_variation->get_id();

			$stock_info = __('Out of Stock', 'product-variant-table-for-woocommerce');

			// Checking Prodcut Stock
			if(! $single_variation->is_in_stock()){
				$btn_format = apply_filters( 'pvtfw_row_cart_btn_oos', sprintf('<button class="pvtfw_variant_table_cart_btn button alt" disabled>
					<span class="pvtfw-btn-text">%s</span> 
					<div class="spinner-wrap"><span class="flaticon-spinner-of-dots"></span></div>
					</button>', sprintf( _x( '%s', 'Button Text: Out of Stock', 'product-variant-table-for-woocommerce' ), $text )));

			}
			else{
				$btn_format = apply_filters( 'pvtfw_row_cart_btn_is', sprintf('<button data-product-id="%s" data-url="%s" data-product="%s" data-variant="%s" class="pvtfw_variant_table_cart_btn button alt">
					<span class="pvtfw-btn-text">%s</span> 
					<div class="spinner-wrap"><span class="flaticon-spinner-of-dots"></span></div>
					</button>', $product_id, $cart_url, $product_url, $variant_id, sprintf( _x( '%s', 'Button Text: Add To Cart', 'product-variant-table-for-woocommerce' ), $text )
				));
			}
			$qtyargs = array(
				'min_value'   => apply_filters( 'woocommerce_quantity_input_min', $single_variation->get_min_purchase_quantity(), $single_variation ),
				'max_value'   => apply_filters( 'woocommerce_quantity_input_max', $single_variation->get_max_purchase_quantity(), $single_variation ),
				'input_value' => isset( $_POST['quantity'] ) ? wc_stock_amount( wp_unslash( $_POST['quantity'] ) ) : $single_variation->get_min_purchase_quantity(), // WPCS: CSRF ok, input var ok.
				'input_id' => 'pvtfw_variant_table_qty'.$variant_id,
			);

			$options['image_link'][] = "<figure class='item'><img class='pvtfw_variant_table_img_size' src='".wp_get_attachment_url( $single_variation->get_image_id() )."' /></figure>";
			$options['image_link_additional'][] = wp_get_attachment_image( get_post_meta( $variant_id, 'woo_variation_gallery_images', true )[0], array('100', '100'), "", array( "class" => "pvtfw_variant_table_img_size" ) );
			$options['sku'][] = $single_variation->get_sku();
			$options['variation_description'][] = $single_variation->get_description();
			$options['attributes'][] = $single_variation->get_variation_attributes(false) ;
			$options['dimensions_html'][] = wc_format_dimensions($single_variation->get_dimensions(false));
			$options['weight_html'][] = wc_format_weight($single_variation->get_weight(false));
			$options['availability_html'][] = $single_variation->get_stock_quantity();
			if($single_variation->is_on_sale()):
				$options['price_html'][] = wc_price($single_variation->get_sale_price())." <del>". wc_price($single_variation->get_regular_price())."</del>"."<input type='hidden' name='hidden_price' class='hidden_price' value='".$single_variation->get_sale_price()."'>";
			else:
				$options['price_html'][] = wc_price($single_variation->get_regular_price())."<input type='hidden' name='hidden_price' class='hidden_price' value='".$single_variation->get_regular_price()."'>";
			endif;
			if("basic" == $qty_layout){
				/**
				 * If stock quantity is empty then it displayed -2 for max value. Below condition is checking
				 * it is -1 value or not if -1 value max=""
				 * else the stock quantity will be displayed
				 */
				if($single_variation->get_max_purchase_quantity() != -1){
					$options['quantity'][] = '<div class="pvtfw-quantity"><input id="pvtfw_variant_table_qty'.$variant_id.'" type="number" class="input-text qty text" step="1" min="'.$single_variation->get_min_purchase_quantity().'" max="'.$single_variation->get_max_purchase_quantity().'" name="quantity" value="1" title="Qty" size="2" placeholder="" inputmode="numeric"></div>';
				}
				else{
					$options['quantity'][] = '<div class="pvtfw-quantity"><input id="pvtfw_variant_table_qty'.$variant_id.'" type="number" class="input-text qty text" step="1" min="'.$single_variation->get_min_purchase_quantity().'" max="" name="quantity" value="1" title="Qty" size="2" placeholder="" inputmode="numeric"></div>';
				}
			}
			else{
				// $options['quantity'][] = apply_filters( 'woocommerce_quantity_input_args', wp_parse_args( $args, $qtyargs ), $single_variation );
				$options['quantity'][] = apply_filters( 'woocommerce_quantity_input_args', wp_parse_args( $qtyargs ), $single_variation );
			}
			$options['action'][] = $btn_format;
			// $options['sub_total'][] = get_woocommerce_currency_symbol()."<span class='pvtfw_subtotal'></span>";
		endif;
	}
	// Removing values if value is off in column array
	foreach($columns as $key=>$value)
	{
		if(is_null($value) || $value == 'off')
		unset($columns[$key]);
	}

	// Creating new column to show only on columns by user OR predefined as on
	$latest = array();
	foreach ($columns as $key => $value){
		if(!is_null($value) || $value != 'off'){
			$latest[$key] = $options[$key];
		}
	}


	$mapped = [];

	foreach ($latest as $key1 => $each_key_data ) {
	   foreach ($each_key_data as $key2 => $value2 ) {

	   		switch ($key1) {
	   			case 'image_link':

	   				$key1_title = __('Thumbnail', 'product-variant-table-for-woocommerce');

	   				$key1 = apply_filters( 'pvtfw_image_link_title', $key1_title );

	   				break;

				case 'image_link_additional':

	   				$key1_title = __('Second Thumbnail', 'product-variant-table-for-woocommerce');

	   				$key1 = apply_filters( 'pvtfw_image_link_additional_title', $key1_title );

	   				break;

	   			case 'sku':

	   				$key1_title = __('SKU', 'product-variant-table-for-woocommerce');

	   				$key1 = apply_filters( 'pvtfw_sku_title', $key1_title );

	   				break;

	   			case 'price_html':

	   				$key1_title = __('Price', 'product-variant-table-for-woocommerce');

	   				$key1 = apply_filters( 'pvtfw_price_html_title', $key1_title );

	   				break;

	   			case 'variation_description':

	   				$key1_title = __('Description', 'product-variant-table-for-woocommerce');

	   				$key1 = apply_filters( 'pvtfw_variation_description_title', $key1_title );

	   				break;

	   			case 'dimensions_html':

	   				$key1_title = __('Dimensions', 'product-variant-table-for-woocommerce');

	   				$key1 = apply_filters( 'pvtfw_dimensions_html_title', $key1_title );

	   				break;

	   			case 'weight_html':

	   				$key1_title = __('Weight', 'product-variant-table-for-woocommerce');

	   				$key1 = apply_filters( 'pvtfw_weight_html_title', $key1_title );

	   				break;

	   			case 'availability_html':

	   				$key1_title = __('Stock', 'product-variant-table-for-woocommerce');

	   				$key1 = apply_filters( 'pvtfw_availability_html_title', $key1_title );

	   				break;

				case 'quantity':

	   				$key1_title = __('quantity', 'product-variant-table-for-woocommerce');

	   				$key1 = apply_filters( 'pvtfw_quantity_title', $key1_title );

	   				break;

				case 'action':

	   				$key1_title = __('Action', 'product-variant-table-for-woocommerce');

	   				$key1 = apply_filters( 'pvtfw_action_title', $key1_title );

	   				break;
	   			
	   			default:
	   				$key1 = $key1;
	   				break;
	   		}

	      	$mapped[$key2][$key1] = $value2;
	   }
	}


	foreach ($mapped as $key1 => $values) {
		echo "<tr>";
		foreach ($values as $key2 => $value) {
			if($key2 == "attributes"){
                // print_r($value);
				foreach($value as $key3 => $val){
					$taxonomy_name = wc_attribute_label($key3);
					// Getting attribute name (with full arrray) using get_term by passing slug
					$term = get_term_by('slug', $val, $key3);
					// If term is not empty then print attribute label else product page inputted vairation name
					if(!empty($term)){
						echo "<td data-title='{$taxonomy_name}'>{$term->name}</td>";
					}
					else{
						echo "<td data-title='{$taxonomy_name}'>{$val}</td>";
					}
					
				}
			}
			elseif($key2 == __("quantity", "product-variant-table-for-woocommerce") && "plus/minus" == $qty_layout){
				echo "<td data-title='{$key2}'>";
					woocommerce_quantity_input($value);
				echo "</td>";
			}
			else{
				echo "<td data-title='{$key2}'>{$value}</td>";
			}
		}

		/**
		 * ================================
		 * Subtotal code here
		 * ================================
		 */
		$showSubTotal = get_option('pvtfw_variant_table_sub_total', '');
		if($showSubTotal != ''):
			echo "<td>".get_woocommerce_currency_symbol()."<span class='pvtfw_subtotal'></span></td>";
		endif;

		echo "</tr>";
	}