<?php

/**
 * Invoice section of the plugin
 *
 * @link       
 * @since 2.5.0     
 *
 * @package  Wf_Woocommerce_Packing_List  
 */
if (!defined('ABSPATH')) {
	exit;
}

class Wf_Woocommerce_Packing_List_Invoice
{
	public $module_id							= '';
	public static $module_id_static				= '';
	public $module_base							= 'invoice';
	public $module_title						= '';
	public $customizer							= null;
	public $is_enable_invoice					= '';
	public static $return_dummy_invoice_number	= false;  //it will return dummy invoice number if force generate is on
	public $print_btn_label						= '';
	public $download_btn_label					= '';
	public function __construct()
	{

		$this->module_id		= Wf_Woocommerce_Packing_List::get_module_id($this->module_base);
		self::$module_id_static	= $this->module_id;
		add_action('init', array($this, 'load_translations_and_strings'));

		add_filter('wf_module_default_settings', array($this, 'default_settings'), 10, 2);
		add_filter('wf_module_single_checkbox_fields', array($this, 'single_checkbox_fields'), 10, 3);
		add_filter('wf_module_multi_checkbox_fields', array($this, 'multi_checkbox_fields'), 10, 3);
		add_filter('wf_module_save_multi_checkbox_fields', array($this, 'save_multi_checkbox_fields'), 10, 4);
		add_filter('wf_module_customizable_items', array($this, 'get_customizable_items'), 10, 2);
		add_filter('wf_module_non_options_fields', array($this, 'get_non_options_fields'), 10, 2);
		add_filter('wf_module_non_disable_fields', array($this, 'get_non_disable_fields'), 10, 2);

		//hook to add which fiedls to convert
		add_filter('wf_module_convert_to_design_view_html_for_' . $this->module_base, array($this, 'convert_to_design_view_html'), 10, 3);

		//hook to generate template html
		add_filter('wf_module_generate_template_html_for_' . $this->module_base, array($this, 'generate_template_html'), 10, 6);

		//initializing customizer		
		$this->customizer = Wf_Woocommerce_Packing_List::load_modules('customizer');

		$this->is_enable_invoice = Wf_Woocommerce_Packing_List::get_option('woocommerce_wf_enable_invoice', $this->module_id);
		if ("Yes" === $this->is_enable_invoice) /* `print_it` method also have the same checking */ {
			// show document details
			add_filter('wt_print_docdata_metabox', array($this, 'add_docdata_metabox'), 10, 3);

			// show document print/download buttons
			add_filter('wt_print_actions', array($this, 'add_print_buttons'), 10, 4);

			add_filter('wt_print_bulk_actions', array($this, 'add_bulk_print_buttons'));
			add_filter('wt_frontend_print_actions', array($this, 'add_frontend_print_buttons'), 10, 3);
			add_filter('wt_pklist_intl_frontend_order_list_page_print_actions', array($this, 'add_frontend_order_list_page_print_buttons'), 10, 3);
			add_filter('wt_email_print_actions', array($this, 'add_email_print_buttons'), 10, 3);
			add_filter('wt_email_attachments', array($this, 'add_email_attachments'), 10, 4);
			add_action('woocommerce_thankyou', array($this, 'generate_invoice_number_on_order_creation'), 10, 1);
			add_action('woocommerce_new_order', array($this, 'generate_invoice_number_on_order_pending'), 10, 1);
			add_action('woocommerce_order_status_changed', array($this, 'generate_invoice_number_on_status_change'), 10, 3);
			add_filter('wt_pklist_individual_print_button_for_document_types', array($this, 'add_individual_print_button_in_admin_order_listing_page'), 10, 1);
			add_filter('woocommerce_admin_order_actions_end', array($this, 'document_print_btn_on_wc_order_listing_action_column'), 10, 1);
		}
		add_action('wt_print_doc', array($this, 'print_it'), 10, 2);

		//add fields to customizer panel
		add_filter('wf_pklist_alter_customize_inputs', array($this, 'alter_customize_inputs'), 10, 3);
		add_filter('wf_pklist_alter_customize_info_text', array($this, 'alter_customize_info_text'), 10, 3);

		add_filter('wt_pklist_alter_order_template_html', array($this, 'alter_final_template_html'), 10, 3);

		add_action('wt_run_necessary', array($this, 'run_necessary'));

		//invoice column and value
		add_filter('manage_edit-shop_order_columns', array($this, 'add_invoice_column'), 11); /* Add invoice number column to order page */
		add_action('manage_shop_order_posts_custom_column', array($this, 'add_invoice_column_value'), 11, 2); /* Add value to invoice number column in order page */
		add_action('manage_edit-shop_order_sortable_columns', array($this, 'sort_invoice_column'), 11);

		// WC HPOS -  invoice column in order listing page
		add_filter('manage_woocommerce_page_wc-orders_columns', array($this, 'add_invoice_column'), 11); /* Add invoice number column to order page */
		add_action('manage_woocommerce_page_wc-orders_custom_column', array($this, 'add_invoice_column_value'), 11, 2); /* Add value to invoice number column in order page */
		add_action('manage_woocommerce_page_wc-orders_sortable_columns', array($this, 'sort_invoice_column'), 11);

		add_filter('wt_pklist_alter_tooltip_data', array($this, 'register_tooltips'), 1);

		/** 
		 * @since 2.6.2 declaring multi select form fields in settings form 
		 */
		add_filter('wt_pklist_intl_alter_multi_select_fields', array($this, 'alter_multi_select_fields'), 10, 2);

		/** 
		 * @since 2.6.2 Declaring validation rule for form fields in settings form 
		 */
		add_filter('wt_pklist_intl_alter_validation_rule', array($this, 'alter_validation_rule'), 10, 2);

		/** 
		 * @since 2.6.2 Enable PDF preview option
		 */
		add_filter('wf_pklist_intl_customizer_enable_pdf_preview', array($this, 'enable_pdf_preview'), 10, 2);

		/* @since 2.6.9 add admin menu */
		add_filter('wt_admin_menu', array($this, 'add_admin_pages'), 10, 1);

		add_action('wt_pklist_auto_generate_invoice_number_module', array($this, 'generate_auto_invoice_number'), 10);

		add_action('wt_pklist_update_settings_module_wise_on_update', array($this, 'invoice_settings_on_plugin_update'), 10);

		add_filter('wt_pklist_get_plugin_data', array($this, 'get_plugin_data'), 10, 2);

		/**
		 * WC Subscriptions Support
		* The subscription plugin copies all meta data from the parent order during renewal order 
		* creation. 
		* To prevent invoice number duplication, the copying of the invoice number should be avoided. 
		* 
		* @since 4.7.6
		*/
		add_action('plugins_loaded', array($this, 'setup_wc_subscriptions_support'));

	}

	/**
	 * Setup WC Subscriptions support after all plugins are loaded
	 * 
	 * @since 4.7.6
	 */
	public function setup_wc_subscriptions_support() {
		if ( in_array( 'woocommerce-subscriptions/woocommerce-subscriptions.php', apply_filters( 'active_plugins', get_option( 'active_plugins' ) ), true ) || class_exists( 'WC_Subscriptions' ) ) {
			$subscription_version = class_exists( 'WC_Subscriptions' ) && ! empty( WC_Subscriptions::$version ) ? WC_Subscriptions::$version : null;

			// Prevent data being copied to subscriptions
			if ( null !== $subscription_version && version_compare( $subscription_version, '2.5.0', '>=' ) ) {
				add_filter( 'wc_subscriptions_subscription_data', array( $this, 'remove_invoice_number_from_renewal_order_meta' ) );
				add_filter( 'wc_subscriptions_renewal_order_data', array( $this, 'remove_invoice_number_from_renewal_order_meta') );
			} else {
				add_filter( 'wcs_subscription_meta_query', array( $this, 'subscriptions_remove_renewal_invoice_number_meta' ) );
				add_filter( 'wcs_renewal_order_meta_query', array( $this, 'subscriptions_remove_renewal_invoice_number_meta' ), 10 );
			} 
	 	} 
	}

	public function load_translations_and_strings()
	{
		$this->module_title		= __('Invoice', 'print-invoices-packing-slip-labels-for-woocommerce');
		$this->print_btn_label	= __('Print invoice', 'print-invoices-packing-slip-labels-for-woocommerce');
		$this->download_btn_label	= __('Download invoice', 'print-invoices-packing-slip-labels-for-woocommerce');
	}

	/**
	 * 	Add admin menu
	 *	@since 	2.6.9
	 */
	public function add_admin_pages($menus)
	{
		$menus[] = array(
			'submenu',
			WF_PKLIST_POST_TYPE,
			__('Invoice', 'print-invoices-packing-slip-labels-for-woocommerce'),
			__('Invoice', 'print-invoices-packing-slip-labels-for-woocommerce'),
			'manage_woocommerce',
			$this->module_id,
			array($this, 'admin_settings_page'),
			'id' => 'invoice',
		);
		return $menus;
	}

	/**
	 *  	Admin settings page
	 *	@since 	2.6.9
	 */
	public function admin_settings_page()
	{
		$order_statuses = wc_get_order_statuses();
		$wf_generate_invoice_for = Wf_Woocommerce_Packing_List::get_option('woocommerce_wf_generate_for_orderstatus', $this->module_id);
		wp_enqueue_script('wc-enhanced-select');
		wp_enqueue_style('woocommerce_admin_styles', WC()->plugin_url() . '/assets/css/admin.css'); // phpcs:ignore WordPress.WP.EnqueuedResourceParameters.MissingVersion
		wp_enqueue_media();
		if (!class_exists('Wf_Woocommerce_Packing_List_Pro_Common_Func')) {
			wp_enqueue_script($this->module_id, plugin_dir_url(__FILE__) . 'assets/js/main.js', array('jquery'), WF_PKLIST_VERSION); // phpcs:ignore WordPress.WP.EnqueuedResourceParameters.NotInFooter
		}
		if (!is_plugin_active('wt-woocommerce-invoice-addon/wt-woocommerce-invoice-addon.php') && isset($_GET['page']) && "wf_woocommerce_packing_list_invoice" === $_GET['page']) { // phpcs:ignore WordPress.Security.NonceVerification.Recommended
			wp_enqueue_script($this->module_id . '-pro-cta-banner', plugin_dir_url(__FILE__) . 'assets/js/pro-cta-banner.js', array('jquery'), WF_PKLIST_VERSION); // phpcs:ignore WordPress.WP.EnqueuedResourceParameters.NotInFooter
		}
		wp_enqueue_script($this->module_id . '-common', plugin_dir_url(__FILE__) . 'assets/js/common.js', array('jquery'), WF_PKLIST_VERSION); // phpcs:ignore WordPress.WP.EnqueuedResourceParameters.NotInFooter
		$params = array(
			'nonces' => array(
				'main' => wp_create_nonce($this->module_id),
			),
			'ajax_url' => admin_url('admin-ajax.php'),
			'order_statuses' => $order_statuses,
			'module_base' => $this->module_base,
			'msgs' => array(
				'enter_order_id' => __('Please enter order number', 'print-invoices-packing-slip-labels-for-woocommerce'),
				'generating' => __('Generating', 'print-invoices-packing-slip-labels-for-woocommerce'),
				'error' => __('Error', 'print-invoices-packing-slip-labels-for-woocommerce'),
			)
		);
		$common_js_params = array(
			'order_statuses' => $order_statuses,
			'module_base' => $this->module_base,
		);
		wp_localize_script($this->module_id, $this->module_id, $params);
		wp_localize_script($this->module_id . '-common', $this->module_id . '_common_param', $common_js_params);
		do_action('wt_pklist_add_additional_scripts', $this->module_id);
		$the_options = Wf_Woocommerce_Packing_List::get_settings($this->module_id);

		//initializing necessary modules, the argument must be current module name/folder
		if (!is_null($this->customizer) && true === apply_filters('wt_pklist_switch_to_classic_customizer_' . $this->module_base, true, $this->module_base)) {
			$this->customizer->init($this->module_base);
		}

		$template_type = $this->module_base;
		include_once WF_PKLIST_PLUGIN_PATH . '/admin/views/premium_extension_listing.php';
		include(plugin_dir_path(__FILE__) . 'views/invoice-admin-settings.php');
	}

	/**
	 * 	Enable PDF preview
	 *	@since 	2.6.2
	 */
	public function enable_pdf_preview($status, $template_type)
	{
		if ($template_type === $this->module_base) {
			$status = true;
		}
		return $status;
	}

	/**
	 * 	Declaring validation rule for form fields in settings form.
	 * 	@since 2.6.2
	 * 	@since 4.0.5	Added the field `woocommerce_wf_add_invoice_in_customer_mail`.
	 *   @since 4.7.0    Removed the field `woocommerce_wf_add_invoice_in_customer_mail` and added the field `wt_pdf_invoice_attachment_wc_email_classes`.
	 * 	
	 */
	public function alter_validation_rule($arr, $base_id)
	{
		if ($base_id === $this->module_id) {
			$arr = array(
				'woocommerce_wf_generate_for_orderstatus' => array('type' => 'text_arr'),
				'woocommerce_wf_attach_' . $this->module_base => array('type' => 'text_arr'),
				'wf_' . $this->module_base . '_contactno_email' => array('type' => 'text_arr'),
				'wf_' . $this->module_base . '_product_meta' => array('type' => 'text_arr'),
				'wf_woocommerce_invoice_show_print_button' => array('type' => 'text_arr'),
				'woocommerce_wf_Current_Invoice_number' => array('type' => 'int'),
				'woocommerce_wf_invoice_start_number' => array('type' => 'int'),
				'woocommerce_wf_invoice_padding_number' => array('type' => 'int'),
				'wf_woocommerce_invoice_show_print_button' => array('type' => 'text_arr'),
				'wt_pdf_invoice_attachment_wc_email_classes' => array('type' => 'text_arr'),
				'wt_pklist_restrict_invoice_attachment_for' => array('type' => 'text_arr'),
			);
		}
		return $arr;
	}

	/**
	 *	Declaring multi select form fields in settings form 
	 * 	@since 2.6.2
	 * 	@since 4.0.5 Added the field `woocommerce_wf_add_invoice_in_customer_mail`
	 * 	@since 4.7.0 Removed the field `woocommerce_wf_add_invoice_in_customer_mail` and added the field `wt_pdf_invoice_attachment_wc_email_classes`
	 * 	
	 */
	public function alter_multi_select_fields($arr, $base_id)
	{
		if ($base_id === $this->module_id) {
			$arr = array(
				'wf_' . $this->module_base . '_contactno_email' => array(),
				'wf_' . $this->module_base . '_product_meta' => array(),
				'woocommerce_wf_generate_for_orderstatus' => array(),
				'woocommerce_wf_attach_' . $this->module_base => array(),
				'wf_woocommerce_invoice_show_print_button' => array(),
				'wt_pdf_invoice_attachment_wc_email_classes' => array(),
				'wt_pklist_restrict_invoice_attachment_for' => array(),
			);
		}
		return $arr;
	}

	/**
	 * 	@since 2.5.8
	 * 	Hook the tooltip data to main tooltip array
	 */
	public function register_tooltips($tooltip_arr)
	{
		include(plugin_dir_path(__FILE__) . 'data/data.tooltip.php');
		$tooltip_arr[$this->module_id] = $arr;
		return $tooltip_arr;
	}


	/**
	 * Adding received seal filters and other options
	 *	@since 	2.5.5
	 */
	public function alter_final_template_html($html, $template_type, $order)
	{
		if ($template_type === $this->module_base) {
			$is_enable_received_seal = true;
			$is_enable_received_seal = apply_filters('wf_pklist_toggle_received_seal', $is_enable_received_seal, $template_type, $order);
			if (true !== $is_enable_received_seal) //hide it
			{
				$html = Wf_Woocommerce_Packing_List_CustomizerLib::addClass('wfte_received_seal', $html, Wf_Woocommerce_Packing_List_CustomizerLib::TO_HIDE_CSS);
			}
		}
		return $html;
	}

	/**
	 * Adding received seal extra text
	 *	@since 	2.5.5
	 */
	private static function set_received_seal_extra_text($find_replace, $template_type, $html, $order)
	{
		if (false !== strpos($html, '[wfte_received_seal_extra_text]')) //if extra text placeholder exists then only do the process
		{
			$extra_text = '';
			$find_replace['[wfte_received_seal_extra_text]'] = apply_filters('wf_pklist_received_seal_extra_text', $extra_text, $template_type, $order);
		}
		return $find_replace;
	}

	/**
	 * Adding customizer info text for received seal
	 *	@since 	2.5.5
	 */
	public function alter_customize_info_text($info_text, $type, $template_type)
	{
		if ($template_type === $this->module_base) {
			if ("received_seal" === $type) {
				$info_text = sprintf(
					/* translators: 1$s: HTML link opening tag, 2$s: HTML link closing tag */
					__('You can control the visibility of the seal according to order status via filters. See filter documentation %1$s here. %2$s', 'print-invoices-packing-slip-labels-for-woocommerce'), '<a href="' . admin_url('admin.php?page=wf_woocommerce_packing_list#help#filters') . '" target="_blank">', '</a>');
				if (Wf_Woocommerce_Packing_List_Admin::check_if_mpdf_used()) {
					$info_text .= '<span style="color:red;">' . __('This feature might not work in mPDF.', 'print-invoices-packing-slip-labels-for-woocommerce') . '</span>';
				}
			}
		}
		return $info_text;
	}


	/**
	 * Adding received seal customization options to customizer
	 *	@since 	2.5.5
	 */
	public function alter_customize_inputs($fields, $type, $template_type)
	{
		if ($template_type === $this->module_base) {
			if ("received_seal" === $type) {
				$fields = array(
					array(
						'label' => __('Width', 'print-invoices-packing-slip-labels-for-woocommerce'),
						'type' => 'text_inputgrp',
						'css_prop' => 'width',
						'trgt_elm' => $type,
						'unit' => 'px',
						'width' => '49%',
					),
					array(
						'label' => __('Height', 'print-invoices-packing-slip-labels-for-woocommerce'),
						'type' => 'text_inputgrp',
						'css_prop' => 'height',
						'trgt_elm' => $type,
						'unit' => 'px',
						'width' => '49%',
						'float' => 'right',
					),
					array(
						'label' => __('Text', 'print-invoices-packing-slip-labels-for-woocommerce'),
						'css_prop' => 'html',
						'trgt_elm' => $type . '_text',
						'width' => '49%',
					),
					array(
						'label' => __('Font size', 'print-invoices-packing-slip-labels-for-woocommerce'),
						'type' => 'text_inputgrp',
						'css_prop' => 'font-size',
						'trgt_elm' => $type,
						'unit' => 'px',
						'width' => '49%',
						'float' => 'right',
					),
					array(
						'label' => __('Border width', 'print-invoices-packing-slip-labels-for-woocommerce'),
						'type' => 'text_inputgrp',
						'css_prop' => 'border-top-width|border-right-width|border-bottom-width|border-left-width',
						'trgt_elm' => $type,
						'unit' => 'px',
						'width' => '49%',
					),
					array(
						'label' => __('Line height', 'print-invoices-packing-slip-labels-for-woocommerce'),
						'type' => 'text_inputgrp',
						'css_prop' => 'line-height',
						'trgt_elm' => $type,
						'width' => '49%',
						'float' => 'right',
					),
					array(
						'label' => __('Opacity', 'print-invoices-packing-slip-labels-for-woocommerce'),
						'type' => 'select',
						'select_options' => array(
							'1' => 1,
							'0.9' => .9,
							'0.8' => .8,
							'0.7' => .7,
							'0.6' => .6,
							'0.5' => .5,
							'0.4' => .4,
							'0.3' => .3,
							'0.2' => .2,
							'0.1' => .1,
							'0' => 0,
						),
						'css_prop' => 'opacity',
						'trgt_elm' => $type,
						'width' => '49%',
						'event_class' => 'wf_cst_change',
					),
					array(
						'label' => __('Border radius', 'print-invoices-packing-slip-labels-for-woocommerce'),
						'type' => 'text_inputgrp',
						'css_prop' => 'border-top-left-radius|border-top-right-radius|border-bottom-left-radius|border-bottom-right-radius',
						'trgt_elm' => $type,
						'width' => '49%',
						'float' => 'right',
					),
					array(
						'label' => __('From left', 'print-invoices-packing-slip-labels-for-woocommerce'),
						'type' => 'text_inputgrp',
						'css_prop' => 'margin-left',
						'trgt_elm' => $type,
						'unit' => 'px',
						'width' => '49%',
					),
					array(
						'label' => __('From top', 'print-invoices-packing-slip-labels-for-woocommerce'),
						'type' => 'text_inputgrp',
						'css_prop' => 'margin-top',
						'trgt_elm' => $type,
						'width' => '49%',
						'float' => 'right',
					),
					array(
						'label' => __('Angle', 'print-invoices-packing-slip-labels-for-woocommerce'),
						'type' => 'text_inputgrp',
						'css_prop' => 'rotate',
						'trgt_elm' => $type,
						'unit' => 'deg',
					),
					array(
						'label' => __('Color', 'print-invoices-packing-slip-labels-for-woocommerce'),
						'type' => 'color',
						'css_prop' => 'border-top-color|border-right-color|border-bottom-color|border-left-color|color',
						'trgt_elm' => $type,
						'event_class' => 'wf_cst_click',
					)
				);
			}
		}
		return $fields;
	}

	/**
	 *	Generate invoice number on order creation, If user set status to generate invoice number
	 *	@since 2.5.4
	 *	@since 2.8.0 - Added option to not generate the invoice number for free orders
	 *
	 */
	public function generate_invoice_number_on_order_creation($order_id)
	{
		if (!$order_id) {
			return;
		}

		// Allow code execution only once 
		if (!Wt_Pklist_Common::get_order_meta($order_id, '_wt_thankyou_action_done', true)) {
			// Get an instance of the WC_Order object
			$order = wc_get_order($order_id);
			$status = version_compare( WC()->version, '2.7.0', '<' ) ? $order->status : $order->get_status();

			$free_order_enable = Wf_Woocommerce_Packing_List::get_option('wf_woocommerce_invoice_free_orders', $this->module_id);
			$invoice_creation = 1;

			if ("No" === $free_order_enable) {
				if (0 === \intval($order->get_total())) {
					$invoice_creation = 0;
				}
			}

			if (1 === $invoice_creation) {
				$generate_invoice_for = Wf_Woocommerce_Packing_List::get_option('woocommerce_wf_generate_for_orderstatus', $this->module_id);
				$force_generate = in_array('wc-' . $status, $generate_invoice_for) ? true : false;
				if (true === $force_generate) //only generate if user set status to generate invoice
				{
					self::generate_invoice_number($order, $force_generate);
				}
			}
			//add post meta, prevent to fire thankyou hook multiple times
			$order->add_meta_data('_wt_thankyou_action_done', true, true);
			$order->save();
		}
	}

	/**
	 * @since 2.8.3
	 * Generate the invoice number when order status changes
	 */
	public function generate_invoice_number_on_status_change($order_id, $old_status, $new_status)
	{
		if (!$order_id) {
			return;
		}
		$order = wc_get_order($order_id);
		$status	= version_compare( WC()->version, '2.7.0', '<' ) ? $order->status : $order->get_status();
		$free_order_enable = Wf_Woocommerce_Packing_List::get_option('wf_woocommerce_invoice_free_orders', $this->module_id);
		$invoice_creation = 1;

		if ("No" === $free_order_enable) {
			if (0 === \intval($order->get_total())) {
				$invoice_creation = 0;
			}
		}

		if (1 === $invoice_creation) {
			$generate_invoice_for = Wf_Woocommerce_Packing_List::get_option('woocommerce_wf_generate_for_orderstatus', $this->module_id);
			$force_generate = in_array('wc-' . $status, $generate_invoice_for) ? true : false;
			if (true === $force_generate) //only generate if user set status to generate invoice
			{
				self::generate_invoice_number($order, $force_generate);
			}
		}
	}

	/**
	 * @since 4.6.1
	 * Generate the invoice number when the order status of a new order is 'pending'.
	 * This is necessary because the 'woocommerce_thankyou' hook is not triggered when the order status is 'pending'.
	 */
	public function generate_invoice_number_on_order_pending($order_id)
	{
		if (! $order_id) {
			return;
		}

		$order = wc_get_order($order_id);
		$status = $order->get_status();

		if ('pending' !== $status) {
			return;
		}

		$generate_invoice_for = Wf_Woocommerce_Packing_List::get_option('woocommerce_wf_generate_for_orderstatus', $this->module_id);

		if (in_array('wc-' . $status, $generate_invoice_for) && 'pending' === $status) {
			$this->generate_invoice_number_on_order_creation($order_id);
		}
	}


	/**
	 *  Items needed to be converted to design view for the customizer screen
	 */
	public function convert_to_design_view_html($find_replace, $html, $template_type)
	{
		$is_pro_customizer = apply_filters('wt_pklist_pro_customizer_' . $template_type, false, $template_type);
		if ($template_type === $this->module_base && !$is_pro_customizer) {
			$find_replace = Wf_Woocommerce_Packing_List_CustomizerLib::set_billing_address($find_replace, $template_type);
			$find_replace = Wf_Woocommerce_Packing_List_CustomizerLib::set_shipping_address($find_replace, $template_type);
			$find_replace = Wf_Woocommerce_Packing_List_CustomizerLib::set_default_order_fields($find_replace, $template_type, $html);
			$find_replace = Wf_Woocommerce_Packing_List_CustomizerLib::set_product_table($find_replace, $template_type, $html);
			$find_replace = Wf_Woocommerce_Packing_List_CustomizerLib::set_extra_charge_fields($find_replace, $template_type, $html);
			$find_replace = Wf_Woocommerce_Packing_List_CustomizerLib::set_other_data($find_replace, $template_type, $html);
			$find_replace['[wfte_received_seal_extra_text]'] = '';
		}
		return $find_replace;
	}

	/**
	 *  Items needed to be converted to HTML for print/download
	 */
	public function generate_template_html($find_replace, $html, $template_type, $order, $box_packing = null, $order_package = null)
	{
		$is_pro_customizer = apply_filters('wt_pklist_pro_customizer_' . $template_type, false, $template_type);
		if ($template_type === $this->module_base && !$is_pro_customizer) {
			//Generate invoice number while printing invoice
			self::generate_invoice_number($order);

			$find_replace = $this->set_other_data($find_replace, $template_type, $html, $order);

			$find_replace = Wf_Woocommerce_Packing_List_CustomizerLib::set_billing_address($find_replace, $template_type, $order);
			$find_replace = Wf_Woocommerce_Packing_List_CustomizerLib::set_shipping_address($find_replace, $template_type, $order);
			$find_replace = Wf_Woocommerce_Packing_List_CustomizerLib::set_default_order_fields($find_replace, $template_type, $html, $order);
			$find_replace = Wf_Woocommerce_Packing_List_CustomizerLib::set_product_table($find_replace, $template_type, $html, $order);
			$find_replace = Wf_Woocommerce_Packing_List_CustomizerLib::set_extra_charge_fields($find_replace, $template_type, $html, $order);
			$find_replace = Wf_Woocommerce_Packing_List_CustomizerLib::set_other_data($find_replace, $template_type, $html, $order);
			$find_replace = Wf_Woocommerce_Packing_List_CustomizerLib::set_order_data($find_replace, $template_type, $html, $order);
			$find_replace = Wf_Woocommerce_Packing_List_CustomizerLib::set_extra_fields($find_replace, $template_type, $html, $order);
			$find_replace = self::set_received_seal_extra_text($find_replace, $template_type, $html, $order);
		}

		return $find_replace;
	}

	/**
	 * Add product meta to invoice
	 * 
	 * @since 4.0.0
	 * @param string $addional_product_meta
	 * @param string $template_type
	 * @param WC_Product $_product
	 * @param WC_Order_Item $order_item
	 * @return string
	 */
	public function add_product_meta_to_invoice($addional_product_meta, $template_type, $_product, $order_item)
	{
		if ($template_type !== $this->module_base) {
			return $addional_product_meta;
		}

		$module_id = Wf_Woocommerce_Packing_List::get_module_id($template_type);
		$selected_product_meta = Wf_Woocommerce_Packing_List::get_option('wf_' . $template_type . '_product_meta', $module_id);
		
		if (empty($selected_product_meta) || !is_array($selected_product_meta)) {
			return $addional_product_meta;
		}

		$product_meta_fields = Wf_Woocommerce_Packing_List::get_option('wf_product_meta_fields');
		$product_meta_html = array();

        foreach ($selected_product_meta as $meta_key) {
			if (isset($product_meta_fields[$meta_key])) {
				$meta_value = '';
				
                // Prefer direct post meta for internal keys (keys starting with "_") to avoid WC_Data::is_internal_meta_key notices
                if ($_product) {
					$product_id = $_product->get_id();
				
					// Internal keys (starting with "_") should always use get_post_meta
					if (0 === strpos($meta_key, '_')) {
						$meta_value = get_post_meta($product_id, $meta_key, true);
					} else {
						// For known getters (like sku, price, etc.), call methods directly to avoid notices
						$getter = 'get_' . ltrim($meta_key, '_');
						if (method_exists($_product, $getter)) {
							$meta_value = $_product->$getter();
						} elseif (method_exists($_product, 'get_meta')) {
							// Otherwise use generic getter
							$meta_value = $_product->get_meta($meta_key, true);
						} else {
							$meta_value = get_post_meta($product_id, $meta_key, true);
						}
					}
				}

				// Handle array values
				if (is_array($meta_value)) {
					$meta_value = implode(', ', $meta_value);
				}

				// Only add if we have a value
				if (!empty($meta_value)) {
					$product_meta_html[] = '<small><span class="wt_pklist_product_meta_item" data-meta-id="' . esc_attr($meta_key) . '"><label>' . esc_html($product_meta_fields[$meta_key]) . '</label>: ' . esc_html($meta_value) . '</span></small>';
				}
			}
		}

		if (!empty($product_meta_html)) {
			$addional_product_meta .= '<br>' . implode('<br>', $product_meta_html);
		}

		return $addional_product_meta;
	}

	public function run_necessary()
	{
		$this->wf_filter_email_attach_invoice_for_status();
	}

	/**
	 * 	@since 2.8.1
	 * 	Added the filters to edit the invoice data when refunds
	 * 
	 */
	public function set_other_data($find_replace, $template_type, $html, $order)
	{
		add_filter('wf_pklist_alter_item_quantiy', array($this, 'alter_quantity_column'), 1, 5);
		add_filter('wf_pklist_add_product_meta', array($this, 'add_product_meta_to_invoice'), 10, 4);
		add_filter('wf_pklist_alter_item_total_formated', array($this, 'alter_total_price_column'), 1, 7);
		add_filter('wf_pklist_alter_item_tax_formated', array($this, 'alter_total_total_tax_column'), 1, 6);
		add_filter('wf_pklist_alter_subtotal_formated', array($this, 'alter_sub_total_row'), 1, 5);
		add_filter('wf_pklist_alter_taxitem_amount', array($this, 'alter_extra_tax_row'), 1, 4);
		add_filter('wf_pklist_alter_total_fee', array($this, 'alter_fee_row'), 1, 5);
		add_filter('wf_pklist_alter_shipping_method', array($this, 'alter_shipping_row'), 1, 4);
		add_filter('wf_pklist_alter_tax_data', array($this, 'alter_tax_data'), 1, 4);

		// Filter for deleted product rows
		add_filter('wf_pklist_alter_item_quantiy_deleted_product', array($this, 'alter_quantity_column_deleted_product'), 1, 4);
		add_filter('wf_pklist_alter_item_total_formated_deleted_product', array($this, 'alter_total_price_column_deleted_product'), 1, 6);

		return $find_replace;
	}

	public function alter_tax_data($tax_items_total, $tax_items, $order, $template_type)
	{
		$all_refunds = $order->get_refunds();
		$new_tax = 0;
		if (!empty($all_refunds)) {
			// get refund tax from all line items
			foreach ($order->get_items() as $item_id => $item) {
				if (is_array($tax_items) && count($tax_items) > 0) {
					foreach ($tax_items as $tax_item) {
						$tax_rate_id = $tax_item->rate_id;
						$new_tax += $order->get_tax_refunded_for_item($item_id, $tax_rate_id, 'line_item');
					}
				}
			}
			// get refund tax from fee and shipping
			foreach ($all_refunds as $refund_order) {
				if (is_array($tax_items) && count($tax_items) > 0) {
					foreach ($tax_items as $tax_item) {
						$tax_rate_id = $tax_item->rate_id;
						// fee details
						$fee_details = $refund_order->get_items('fee');
						if (!empty($fee_details)) {
							$fee_ord_arr = array();
							foreach ($fee_details as $fee => $fee_value) {
								$fee_order_id = $fee;
								if (!in_array($fee_order_id, $fee_ord_arr)) {
									$fee_taxes = $fee_value->get_taxes();
									$new_tax += abs(isset($fee_taxes['total'][$tax_rate_id]) ? (float) $fee_taxes['total'][$tax_rate_id] : 0);
									$fee_ord_arr[] = $fee_order_id;
								}
							}
						}
						// shipping details
						$shipping_details = $refund_order->get_items('shipping');
						if (!empty($shipping_details)) {
							$shipping_ord_arr = array();
							foreach ($shipping_details as $ship => $shipping_value) {
								$ship_order_id = $ship;
								if (!in_array($ship_order_id, $shipping_ord_arr)) {
									$shipping_taxes = $shipping_value->get_taxes();
									$new_tax += abs(isset($shipping_taxes['total'][$tax_rate_id]) ? (float) $shipping_taxes['total'][$tax_rate_id] : 0);
									$shipping_ord_arr[] = $ship_order_id;
								}
							}
						}
					}
				}
			}
		}

		if ($new_tax > 0) {
			$tax_items_total = (float)$tax_items_total - (float)$new_tax;
		}
		return $tax_items_total;
	}
	/**
	 *	@since 2.8.1
	 *	Alter total price of order item if the item is refunded
	 *	
	 */
	public function alter_total_price_column($product_total_formated, $template_type, $product_total, $_product, $order_item, $order, $incl_tax)
	{
		$all_refunds = $order->get_refunds();
		if (!empty($all_refunds)) {
			$item_id = $order_item->get_id();
			$new_total = (float)$order->get_total_refunded_for_item($item_id);
			$new_tax = 0;
			if (true === $incl_tax) {
				$tax_items = $order->get_tax_totals();
				if (is_array($tax_items) && count($tax_items) > 0) {
					foreach ($tax_items as $tax_item) {
						$tax_rate_id = $tax_item->rate_id;
						$new_tax += $order->get_tax_refunded_for_item($item_id, $tax_rate_id, 'line_item');
					}
				}
			}
			$new_total += $new_tax;
			if ($new_total > 0) {
				$old_product_formated = '<strike>' . $product_total_formated . '</strike>';
				$wc_version = WC()->version;
				$order_id = ( version_compare( $wc_version, '2.7.0', '<' ) ) ? $order->id : $order->get_id();
				$user_currency = Wt_Pklist_Common::get_order_meta($order_id, 'currency', true);
				$new_total = (float)$product_total - $new_total;
				$product_total_formated = Wf_Woocommerce_Packing_List_Admin::wf_display_price($user_currency, $order, $new_total);
				$product_total_formated = apply_filters('wf_pklist_alter_price_to_negative', $product_total_formated, $template_type, $order);
				$product_total_formated = '<span style="">' . $old_product_formated . ' ' . $product_total_formated . '</span>';
			}
		}
		return $product_total_formated;
	}

	public function alter_total_total_tax_column($item_tax_formated, $template_type, $item_tax, $_product, $order_item, $order)
	{
		$all_refunds = $order->get_refunds();
		if (!empty($all_refunds)) {
			$item_taxes			=	$order_item->get_taxes();
			$item_tax_subtotal	=	(isset($item_taxes['total']) ? $item_taxes['total'] : array());
			$tax_items_arr		=	$order->get_items('tax');
			$order_item_id 		= 	$order_item->get_id();
			$refunded_tot_tax	= 	0;
			foreach ($tax_items_arr as $tax_item) {
				$refunded_tot_tax += abs((float)$order->get_tax_refunded_for_item($order_item_id, $tax_item->get_rate_id()));
			}

			if ($refunded_tot_tax > 0) {
				$old_item_tax_formated = '<strike>' . $item_tax_formated . '</strike>';
				$wc_version = WC()->version;
				$order_id = ( version_compare( $wc_version, '2.7.0', '<' ) ) ? $order->id : $order->get_id();
				$item_tax	= (float)$item_tax - $refunded_tot_tax;
				$user_currency = Wt_Pklist_Common::get_order_meta($order_id, 'currency', true);
				$item_tax_formated = Wf_Woocommerce_Packing_List_Admin::wf_display_price($user_currency, $order, $item_tax);
				$item_tax_formated = apply_filters('wf_pklist_alter_price_to_negative', $item_tax_formated, $template_type, $order);
				$item_tax_formated = '<span style="">' . $old_item_tax_formated . ' ' . $item_tax_formated . '</span>';
			}
		}
		return $item_tax_formated;
	}

	/**
	 *	@since 2.8.3
	 *	Alter total price of order item if the item is refunded
	 *	
	 */
	public function alter_total_price_column_deleted_product($product_total_formated, $template_type, $product_total, $order_item, $order, $incl_tax)
	{
		$all_refunds = $order->get_refunds();
		if (!empty($all_refunds)) {
			$item_id = $order_item->get_id();
			$new_total = (float)$order->get_total_refunded_for_item($item_id);
			$new_tax = 0;
			if ($incl_tax == true) {
				$tax_items = $order->get_tax_totals();
				if (is_array($tax_items) && count($tax_items) > 0) {
					foreach ($tax_items as $tax_item) {
						$tax_rate_id = $tax_item->rate_id;
						$new_tax += $order->get_tax_refunded_for_item($item_id, $tax_rate_id, 'line_item');
					}
				}
			}
			$new_total += $new_tax;
			if ($new_total > 0) {
				$old_product_formated = '<strike>' . $product_total_formated . '</strike>';
				$wc_version = WC()->version;
				$order_id = ( version_compare( $wc_version, '2.7.0', '<' ) ) ? $order->id : $order->get_id();
				$user_currency = Wt_Pklist_Common::get_order_meta($order_id, 'currency', true);
				$new_total = (float)$product_total - $new_total;
				$product_total_formated = Wf_Woocommerce_Packing_List_Admin::wf_display_price($user_currency, $order, $new_total);
				$product_total_formated = apply_filters('wf_pklist_alter_price_to_negative', $product_total_formated, $template_type, $order);
				$product_total_formated = '<span style="">' . $old_product_formated . ' ' . $product_total_formated . '</span>';
			}
		}
		return $product_total_formated;
	}

	/**
	 *	@since 2.8.1
	 *	Alter quantity of order item if the item is refunded
	 *	
	 */
	public function alter_quantity_column($qty, $template_type, $_product, $order_item, $order)
	{
		$item_id = $order_item->get_id();
		$new_qty = $order->get_qty_refunded_for_item($item_id);
		if ($new_qty < 0) {
			$qty = '<del>' . $qty . '</del> &nbsp; <ins>' . ($qty + $new_qty) . '</ins>';
		}
		return $qty;
	}

	/**
	 *	@since 2.8.3
	 *	Alter quantity of order item if the item is refunded
	 *	
	 */
	public function alter_quantity_column_deleted_product($qty, $template_type, $order_item, $order)
	{
		$item_id = $order_item->get_id();
		$new_qty = $order->get_qty_refunded_for_item($item_id);
		if ($new_qty < 0) {
			$qty = '<del>' . $qty . '</del> &nbsp; <ins>' . ($qty + $new_qty) . '</ins>';
		}
		return $qty;
	}

	/**
	 *	@since 2.8.2
	 *	Alter subtotal row in product table, if any refund
	 *	
	 */
	public function alter_sub_total_row($sub_total_formated, $template_type, $sub_total, $order, $incl_tax)
	{
		$wc_version = WC()->version;
		$order_id = ( version_compare( $wc_version, '2.7.0', '<' ) ) ? $order->id : $order->get_id();
		$user_currency = Wt_Pklist_Common::get_order_meta($order_id, 'currency', true);
		$new_total = 0;
		$new_tax = 0;
		$decimal = Wf_Woocommerce_Packing_List_Admin::wf_get_decimal_price($user_currency, $order);

		$incl_tax_text = '';
		if (true === $incl_tax) {
			$incl_tax_text = Wf_Woocommerce_Packing_List_CustomizerLib::get_tax_incl_text($template_type, $order, 'product_price');
			$incl_tax_text = ("" !== $incl_tax_text ? ' (' . $incl_tax_text . ')' : $incl_tax_text);
		}
		$sub_total_formated = Wf_Woocommerce_Packing_List_Admin::wf_display_price($user_currency, $order, $sub_total);

		$all_refunds = $order->get_refunds();
		if (!empty($all_refunds)) {
			foreach ($all_refunds as $refund_order) {
				foreach ($refund_order->get_items() as $item_id => $item) {

					$new_total += (float)$item->get_subtotal();
					if ($incl_tax == true) {
						$tax_items = $order->get_tax_totals();
						if (is_array($tax_items) && count($tax_items) > 0) {
							foreach ($tax_items as $tax_item) {
								$tax_rate_id = $tax_item->rate_id;
								$refund_tax = $item->get_taxes();
								$new_tax += isset($refund_tax['total'][$tax_rate_id]) ? (float) $refund_tax['total'][$tax_rate_id] : 0;
							}
						}
					}
				}
			}
			$new_total += $new_tax;
			if ($new_total < 0) {
				$new_total = $sub_total - abs((float)$new_total);
				$new_sub_total_formated = Wf_Woocommerce_Packing_List_Admin::wf_display_price($user_currency, $order, $new_total);
				$sub_total_formated = '<span style=""><strike>' . $sub_total_formated . '</strike> ' . $new_sub_total_formated . '</span>';
			}
		}
		$sub_total_formated = apply_filters('wf_pklist_alter_price_to_negative', $sub_total_formated, $template_type, $order);
		return $sub_total_formated . $incl_tax_text;
	}

	/**
	 *	@since 2.8.2
	 *	Alter Individual tax rows in product table, if any refund
	 *	
	 */
	public function alter_extra_tax_row($tax_amount, $tax_item, $order, $template_type)
	{
		$wc_version = WC()->version;
		$order_id = ( version_compare( $wc_version, '2.7.0', '<' ) ) ? $order->id : $order->get_id();
		$user_currency = Wt_Pklist_Common::get_order_meta($order_id, 'currency', true);
		$tax_type = Wf_Woocommerce_Packing_List::get_option('woocommerce_wf_generate_for_taxstatus');
		$incl_tax = in_array('in_tax', $tax_type);
		$new_tax_amount = 0;
		$all_refunds = $order->get_refunds();
		$tax_rate_id = $tax_item->rate_id;
		$shipping = 0;

		if (!empty($all_refunds)) {
			foreach ($all_refunds as $refund_order) {
				foreach ($refund_order->get_items() as $refunded_item_id => $refunded_item) {
					$refund_tax = $refunded_item->get_taxes();
					$new_tax_amount += isset($refund_tax['total'][$tax_rate_id]) ? (float) $refund_tax['total'][$tax_rate_id] : 0;
				}

				$fee_details = $refund_order->get_items('fee');
				if (!empty($fee_details)) {
					$fee_ord_arr = array();
					foreach ($fee_details as $fee => $fee_value) {
						$fee_order_id = $fee;
						if (!in_array($fee_order_id, $fee_ord_arr)) {
							$fee_taxes = $fee_value->get_taxes();
							$new_tax_amount += isset($fee_taxes['total'][$tax_rate_id]) ? (float) $fee_taxes['total'][$tax_rate_id] : 0;
							$fee_ord_arr[] = $fee_order_id;
						}
					}
				}
				$shipping_details = $refund_order->get_items('shipping');
				if (!empty($shipping_details)) {
					$shipping_ord_arr = array();
					foreach ($shipping_details as $ship => $shipping_value) {
						$ship_order_id = $ship;
						if (!in_array($ship_order_id, $shipping_ord_arr)) {
							$shipping_taxes = $shipping_value->get_taxes();
							$new_tax_amount += isset($shipping_taxes['total'][$tax_rate_id]) ? (float) $shipping_taxes['total'][$tax_rate_id] : 0;
							$shipping_ord_arr[] = $ship_order_id;
						}
					}
				}
				$refund_id = ( version_compare( $wc_version, '2.7.0', '<' ) ) ? $refund_order->id : $refund_order->get_id();

			}

			if ($new_tax_amount < 0) {
				$new_tax_amount = $tax_item->amount - abs((float)$new_tax_amount);
				$new_tax_amount_formatted = Wf_Woocommerce_Packing_List_Admin::wf_display_price($user_currency, $order, $new_tax_amount);
				$tax_amount = '<span><strike>' . $tax_amount . '</strike> ' . $new_tax_amount_formatted . '</span>';
			}
		}
		return $tax_amount;
	}

	/**
	 *	@since 2.8.2
	 *	Alter Fee row in product table, if any refund
	 *	
	 */
	public function alter_fee_row($fee_total_amount_formated, $template_type, $fee_total_amount, $user_currency, $order)
	{
		$incl_tax_text = '';
		$tax_display = get_option('woocommerce_tax_display_cart');
		$tax_type = Wf_Woocommerce_Packing_List::get_option('woocommerce_wf_generate_for_taxstatus');
		$incl_tax = in_array('in_tax', $tax_type);
		$tax_items = $order->get_tax_totals();

		$all_refunds = $order->get_refunds();
		if (!empty($all_refunds)) {
			$new_fee_total_amount = 0;
			foreach ($all_refunds as $refund_order) {
				$fee_details = $refund_order->get_items('fee');
				if (!empty($fee_details)) {
					$fee_ord_arr = array();
					foreach ($fee_details as $fee => $fee_value) {
						$fee_order_id = $fee;
						if (!in_array($fee_order_id, $fee_ord_arr)) {
							$fee_line_total = function_exists('wc_get_order_item_meta') ? wc_get_order_item_meta($fee_order_id, '_line_total', true) : $order->get_item_meta($fee_order_id, '_line_total', true);
							$new_fee_total_amount += (float)$fee_line_total;
							if ($incl_tax) {
								foreach ($tax_items as $tax_item) {
									$tax_rate_id = $tax_item->rate_id;
									$fee_taxes = $fee_value->get_taxes();
									$new_fee_total_amount += isset($fee_taxes['total'][$tax_rate_id]) ? (float) $fee_taxes['total'][$tax_rate_id] : 0;
								}
							}
							$fee_ord_arr[] = $fee_order_id;
						}
					}
				}
			}
			if ($new_fee_total_amount < 0) {
				$new_fee_total_amount = (float)$fee_total_amount - abs((float)$new_fee_total_amount);
				$new_fee_total_amount_formatted = Wf_Woocommerce_Packing_List_Admin::wf_display_price($user_currency, $order, $new_fee_total_amount);
				$fee_total_amount_formated = '<span><strike>' . $fee_total_amount_formated . '</strike> ' . $new_fee_total_amount_formatted . '</span>';
			}
		}
		return $fee_total_amount_formated;
	}

	/**
	 *	@since 2.8.2
	 *	Alter Shipping amount row in product table, if any refund
	 *	
	 */
	public function alter_shipping_row($shipping, $template_type, $order, $product_table)
	{
		$wc_version = WC()->version;
		$order_id = ( version_compare( $wc_version, '2.7.0', '<' ) ) ? $order->id : $order->get_id();
		$user_currency = Wt_Pklist_Common::get_order_meta($order_id, 'currency', true);
		$incl_tax_text = '';
		$tax_display = get_option('woocommerce_tax_display_cart');
		$tax_type = Wf_Woocommerce_Packing_List::get_option('woocommerce_wf_generate_for_taxstatus');
		$incl_tax = in_array('in_tax', $tax_type);
		$tax_items = $order->get_tax_totals();

		$all_refunds = $order->get_refunds();
		if (!empty($all_refunds)) {
			$new_shipping_amount = 0;
			foreach ($all_refunds as $refund_order) {
				$refund_id = ( version_compare( $wc_version, '2.7.0', '<' ) ) ?  $refund_order->id : $refund_order->get_id();
				$new_shipping_amount += (float) Wt_Pklist_Common::get_order_meta($refund_id, 'shipping_total', true);

				if ($incl_tax) {
					if (is_array($tax_items) && count($tax_items) > 0) {
						foreach ($tax_items as $tax_item) {
							$tax_rate_id = $tax_item->rate_id;
							$shipping_details = $refund_order->get_items('shipping');
							if (!empty($shipping_details)) {
								$shipping_ord_arr = array();
								foreach ($shipping_details as $ship => $shipping_value) {
									$ship_order_id = $ship;
									if (!in_array($ship_order_id, $shipping_ord_arr)) {
										$shipping_taxes = $shipping_value->get_taxes();
										$new_shipping_amount += isset($shipping_taxes['total'][$tax_rate_id]) ? (float) $shipping_taxes['total'][$tax_rate_id] : 0;
										$shipping_ord_arr[] = $ship_order_id;
									}
								}
							}
						}
					}
				}
			}

			if ($new_shipping_amount < 0) {

				if (($incl_tax === false)) {
					$shipping_total_amount = (float)$order->get_shipping_total();
				} else {
					if (abs($order->get_shipping_tax()) > 0) {
						$incl_tax_text = Wf_Woocommerce_Packing_List_CustomizerLib::get_tax_incl_text($template_type, $order, 'product_price');
						$incl_tax_text = ($incl_tax_text != "" ? ' (' . $incl_tax_text . ')' : $incl_tax_text);
					}
					$shipping_total_amount = (float)$order->get_shipping_total() + (float)$order->get_shipping_tax();
				}

				$new_shipping_amount = $shipping_total_amount - abs((float)$new_shipping_amount);
				$old_shipping_amount_formatted = Wf_Woocommerce_Packing_List_Admin::wf_display_price($user_currency, $order, $shipping_total_amount);
				$new_shipping_total_amount_formatted = Wf_Woocommerce_Packing_List_Admin::wf_display_price($user_currency, $order, $new_shipping_amount);
				$shipping = '<span><strike>' . $old_shipping_amount_formatted . '</strike> ' . $new_shipping_total_amount_formatted . '</span>' . $incl_tax_text;
				$shipping .= apply_filters('woocommerce_order_shipping_to_display_shipped_via', '&nbsp;<small class="shipped_via">' . sprintf(
					/* translators: %s: Shipping method name */
					__('via %s', 'print-invoices-packing-slip-labels-for-woocommerce'), $order->get_shipping_method()) . '</small>', $order);
			}
		}
		return $shipping;
	}

	protected static function get_orderdate_timestamp($order_id)
	{
		$order_date = get_the_date('Y-m-d h:i:s A', $order_id);
		return strtotime($order_date);
	}

	/**
	 * Get invoice date
	 * @since 2.5.4
	 * @return mixed
	 */
	public static function get_invoice_date($order_id, $date_format, $order)
	{
		$invoice_date = Wt_Pklist_Common::get_order_meta($order_id, '_wf_invoice_date', true);
		if ($invoice_date) {
			return (empty($invoice_date) ? '' : date_i18n($date_format, $invoice_date));
		} else {
			if (self::$return_dummy_invoice_number) {
				return date_i18n($date_format);
			} else {
				return '';
			}
		}
	}

	public static function generate_invoice_number($order, $force_generate = true, $free_ord = "")
	{
		$generate_invoice = apply_filters('wt_pklist_generate_invoice_number', true, $order);

		if (! $generate_invoice) {
			return '';
		}

		$order_id = version_compare( WC()->version, '2.7.0', '<' ) ? $order->id : $order->get_id();
		$wf_invoice_id = Wt_Pklist_Common::get_order_meta($order_id, 'wf_invoice_number', true);

		if (!empty($wf_invoice_id)) {
			return $wf_invoice_id;
		}

		if ((empty($wf_invoice_id)) && ("set" !== $free_ord)) {
			$free_order_enable = Wf_Woocommerce_Packing_List::get_option('wf_woocommerce_invoice_free_orders', self::$module_id_static);
			if ("No" === $free_order_enable) {
				if (0 === \intval($order->get_total())) {
					return '';
				}
			}
		}

		if (class_exists('Wf_Woocommerce_Packing_List_Sequential_Number')) {
			$lockFolderPath = Wf_Woocommerce_Packing_List::get_temp_dir('path') . '-lock';
			if (!is_dir($lockFolderPath)) {
				wp_mkdir_p($lockFolderPath);
			}
			$lockFilePath	= $lockFolderPath . '/wt_pklist_sequence_number.lock';
			$file 			= fopen($lockFilePath, "w"); // phpcs:ignore WordPress.WP.AlternativeFunctions.file_system_operations_fopen
			if ($file) {
				if ( self::wt_safe_file_lock($file) ) {
					$invoice_id =  Wf_Woocommerce_Packing_List_Sequential_Number::generate_sequential_number($order, self::$module_id_static, array('number' => 'wf_invoice_number', 'date' => 'wf_invoice_date', 'enable' => 'woocommerce_wf_enable_invoice'), $force_generate);
					flock($file, LOCK_UN);
					return $invoice_id;
				} else {
					sleep(2);
					self::generate_invoice_number($order, $force_generate, $free_ord);
				}
			} else {
				// if fopen fails
				$invoice_id =  Wf_Woocommerce_Packing_List_Sequential_Number::generate_sequential_number($order, self::$module_id_static, array('number' => 'wf_invoice_number', 'date' => 'wf_invoice_date', 'enable' => 'woocommerce_wf_enable_invoice'), $force_generate);
				return $invoice_id;
			}
		} else {
			return '';
		}
	}

	/**
     * @since 4.9.0
     * Safely lock a file using flock.
     *
     * @param resource $file File handle.
     * @return bool True if lock was acquired, false otherwise.
     */
    public static function wt_safe_file_lock($file) {
        // Detect if environment supports flock
         $can_flock = !defined('WPCOM_IS_VIP_ENV') || !WPCOM_IS_VIP_ENV;
         // Alternatively, allow override via filter
         $can_flock = apply_filters('webtoffee_use_flock', $can_flock);
 
         if ($can_flock && is_resource($file)) {
             // Use @ to suppress warnings in unsupported contexts
             return @flock($file, LOCK_EX);
         }
         // Fallback: no locking
         return true;
     }

	/**
	 * Function to add "Invoice" column in order listing page
	 *
	 * @since    2.5.0
	 */
	public function add_invoice_column($columns)
	{
		$columns['Invoice'] = __('Invoice', 'print-invoices-packing-slip-labels-for-woocommerce');
		return $columns;
	}

	/**
	 * Function to add value in "Invoice" column
	 *
	 * @since    2.5.0
	 */
	public function add_invoice_column_value($column, $post_or_order_object)
	{
		$order = ($post_or_order_object instanceof \WP_Post) ? wc_get_order($post_or_order_object->ID) : $post_or_order_object;
		if (! is_object($order) && is_numeric($order)) {
			$order = wc_get_order(absint($order));
		}

		if ("Invoice" === $column) {
			$order_id = version_compare( WC()->version, '2.7.0', '<' ) ? $order->id : $order->get_id();
			$order_status = version_compare( WC()->version, '2.7.0', '<' ) ? $order->status : $order->get_status();
			$generate_invoice_for = Wf_Woocommerce_Packing_List::get_option('woocommerce_wf_generate_for_orderstatus', $this->module_id);
			$force_generate = in_array('wc-' . $order_status, $generate_invoice_for) ? true : false;
			$wf_invoice_id = Wt_Pklist_Common::get_order_meta($order_id, 'wf_invoice_number', true);
			echo esc_html($wf_invoice_id);
		}
	}

	public function sort_invoice_column($columns)
	{
		$columns['Invoice'] = __('Invoice', 'print-invoices-packing-slip-labels-for-woocommerce');
		return $columns;
	}

	/**
	 * @since 3.0.5
	 * [Fix] - Function to generate invoice number in ascending order by order date
	 */
	public function generate_auto_invoice_number()
	{
		$generate_invoice_for = Wf_Woocommerce_Packing_List::get_option('woocommerce_wf_generate_for_orderstatus', $this->module_id);
		if (!empty($generate_invoice_for)) {
			$empty_invoice_order_ids = Wf_Woocommerce_Packing_List_Admin::get_order_ids_for_invoice_number_generation($this->module_id);
			if (!empty($empty_invoice_order_ids)) {
				foreach ($empty_invoice_order_ids as $this_order_id) {
					$order = Wt_Pklist_Common::get_order($this_order_id);
					$order_id = (int)(version_compare( WC()->version, '2.7.0', '<' )) ? $order->id : $order->get_id();
					$order_status = version_compare( WC()->version, '2.7.0', '<' ) ? $order->status : $order->get_status();
					$wf_invoice_id = Wt_Pklist_Common::get_order_meta($order_id, 'wf_invoice_number', true);
					if (empty($wf_invoice_id)) {
						$generate_invoice_for = Wf_Woocommerce_Packing_List::get_option('woocommerce_wf_generate_for_orderstatus', $this->module_id);
						$force_generate = in_array('wc-' . $order_status, $generate_invoice_for) ? true : false;
						self::generate_invoice_number($order, $force_generate);
					}
				}
				update_option('invoice_empty_count', 0);
			}
		} else {
			update_option('invoice_empty_count', 0);
		}
	}

	/**
	 * removing status other than generate invoice status
	 * @since 	2.5.0
	 * @since 	2.5.3 [Bug fix] array intersect issue when order status is empty 	
	 */
	private function wf_filter_email_attach_invoice_for_status()
	{
		$the_options = Wf_Woocommerce_Packing_List::get_settings($this->module_id);
		$email_attach_invoice_for_status = $the_options['woocommerce_wf_attach_invoice'];
		$generate_for_orderstatus = $the_options['woocommerce_wf_generate_for_orderstatus'];
		$generate_for_orderstatus = !is_array($generate_for_orderstatus) ? array() : $generate_for_orderstatus;
		$email_attach_invoice_for_status = !is_array($email_attach_invoice_for_status) ? array() : $email_attach_invoice_for_status;
		$the_options['woocommerce_wf_attach_invoice'] = array_intersect($email_attach_invoice_for_status, $generate_for_orderstatus);
		Wf_Woocommerce_Packing_List::update_settings($the_options, $this->module_id);
	}

	public function get_customizable_items($settings, $base_id)
	{
		$is_pro_customizer = apply_filters('wt_pklist_pro_customizer_' . $this->module_base, false, $this->module_base);
		if ($base_id === $this->module_id) {
			$only_pro_html = '<span class="wt_customizer_pro_text" style="color:red;"> (' . __('Pro version', 'print-invoices-packing-slip-labels-for-woocommerce') . ')</span>';
			$only_pro_addon_html = '<span class="wt_customizer_pro_text" style="color:red;"> (' . __('Pro Add-on', 'print-invoices-packing-slip-labels-for-woocommerce') . ')</span>';
			//these fields are the classname in template Eg: `company_logo` will point to `wfte_company_logo`

			$settings = array(
				'doc_title' => __('Document title', 'print-invoices-packing-slip-labels-for-woocommerce'),
				'company_logo' => __('Company Logo / Name', 'print-invoices-packing-slip-labels-for-woocommerce'),
				//'barcode_disabled'=>__('Barcode','print-invoices-packing-slip-labels-for-woocommerce').$only_pro_html,
				'invoice_number' => __('Invoice Number', 'print-invoices-packing-slip-labels-for-woocommerce'),
				'order_number' => __('Order Number', 'print-invoices-packing-slip-labels-for-woocommerce'),
				'invoice_date' => __('Invoice Date', 'print-invoices-packing-slip-labels-for-woocommerce'),
				'order_date' => __('Order Date', 'print-invoices-packing-slip-labels-for-woocommerce'),
				'product_table' => __('Product Table', 'print-invoices-packing-slip-labels-for-woocommerce'),
				'from_address' => __('From Address', 'print-invoices-packing-slip-labels-for-woocommerce'),
				'billing_address' => __('Billing Address', 'print-invoices-packing-slip-labels-for-woocommerce'),
				'shipping_address' => __('Shipping Address', 'print-invoices-packing-slip-labels-for-woocommerce'),
				'email' => __('Email Field', 'print-invoices-packing-slip-labels-for-woocommerce'),
				'tel' => __('Tel Field', 'print-invoices-packing-slip-labels-for-woocommerce'),
				'customer_note' => __('Customer note', 'print-invoices-packing-slip-labels-for-woocommerce'),
				'ssn_number' => __('SSN number', 'print-invoices-packing-slip-labels-for-woocommerce'),
				'vat_number' => __('VAT number', 'print-invoices-packing-slip-labels-for-woocommerce'),
				//'shipping_method'=>__('Shipping Method','print-invoices-packing-slip-labels-for-woocommerce'),
				'received_seal' => __('Payment received stamp', 'print-invoices-packing-slip-labels-for-woocommerce'),
			);

			$template_type = $this->module_base;
			$show_qrcode_placeholder = apply_filters('wt_pklist_show_qrcode_placeholder_in_template', false, $template_type);
			$settings['barcode'] = __('Barcode', 'print-invoices-packing-slip-labels-for-woocommerce');
			if (!$show_qrcode_placeholder) {
				$settings['footer'] = __('Footer', 'print-invoices-packing-slip-labels-for-woocommerce');
				$settings['qrcode_disabled'] = __('QR code', 'print-invoices-packing-slip-labels-for-woocommerce') . $only_pro_addon_html;
			} else {
				$settings['qrcode'] = __('QR Code', 'print-invoices-packing-slip-labels-for-woocommerce');
				$settings['footer'] = __('Footer', 'print-invoices-packing-slip-labels-for-woocommerce');
			}

			if (false === $is_pro_customizer) {
				$pro_features = array(
					'tracking_number_pro_element' => __('Tracking Number', 'print-invoices-packing-slip-labels-for-woocommerce') . $only_pro_html,
					'product_table_subtotal_pro_element' => __('Subtotal', 'print-invoices-packing-slip-labels-for-woocommerce') . $only_pro_html,
					'product_table_shipping_pro_element' => __('Shipping', 'print-invoices-packing-slip-labels-for-woocommerce') . $only_pro_html,
					'product_table_cart_discount_pro_element' => __('Cart Discount', 'print-invoices-packing-slip-labels-for-woocommerce') . $only_pro_html,
					'product_table_order_discount_pro_element' => __('Order Discount', 'print-invoices-packing-slip-labels-for-woocommerce') . $only_pro_html,
					'product_table_total_tax_pro_element' => __('Total Tax', 'print-invoices-packing-slip-labels-for-woocommerce') . $only_pro_html,
					'product_table_fee_pro_element' => __('Fee', 'print-invoices-packing-slip-labels-for-woocommerce') . $only_pro_html,
					'product_table_coupon_pro_element' => __('Coupon info', 'print-invoices-packing-slip-labels-for-woocommerce') . $only_pro_html,
					'product_table_payment_method_pro_element' => __('Payment Method', 'print-invoices-packing-slip-labels-for-woocommerce') . $only_pro_html,
					'product_table_payment_total_pro_element' => __('Total', 'print-invoices-packing-slip-labels-for-woocommerce') . $only_pro_html,
				);
				$settings = array_merge($settings, $pro_features);
			}
		}
		return $settings;
	}

	/*
	* These are the fields that have no customizable options, Just on/off
	* 
	*/
	public function get_non_options_fields($settings, $base_id)
	{
		if ($base_id === $this->module_id) {
			$template_type = $this->module_base;
			$show_qrcode_placeholder = apply_filters('wt_pklist_show_qrcode_placeholder_in_template', false, $template_type);
			return array(
				'barcode',
				'qrcode',
				'footer',
				'return_policy',
			);
		}
		return $settings;
	}

	/*
	* These are the fields that are switchable
	* 
	*/
	public function get_non_disable_fields($settings, $base_id)
	{
		if ($base_id === $this->module_id) {
			return array(
				'product_table_payment_summary'
			);
		}
		return $settings;
	}

	/**
	 *	Default form fields and their values for invoice settings page
	 * 	@since 4.0.5	Added the fields `woocommerce_wf_add_invoice_in_customer_mail` and `woocommerce_wf_add_invoice_in_admin_mail`.
	 *	@since 4.7.0	Removed the fields `woocommerce_wf_add_invoice_in_customer_mail`,`woocommerce_wf_add_invoice_in_admin_mail` and added the field `wt_pdf_invoice_attachment_wc_email_classes`.
	 * 	
	 */
	public function default_settings($settings, $base_id)
	{
		if ($base_id === $this->module_id) {
			$settings = array(
				'woocommerce_wf_generate_for_orderstatus' => array('wc-completed', 'wc-processing'),
				'woocommerce_wf_attach_invoice' => array(),
				'woocommerce_wf_packinglist_logo' => '',
				'woocommerce_wf_add_invoice_in_mail' => 'No',
				'woocommerce_wf_packinglist_frontend_info' => 'Yes',
				'woocommerce_wf_invoice_number_format' => "[number]",
				'woocommerce_wf_Current_Invoice_number' => 1,
				'woocommerce_wf_invoice_start_number' => 1,
				'woocommerce_wf_invoice_number_prefix' => '',
				'woocommerce_wf_invoice_padding_number' => 0,
				'woocommerce_wf_invoice_number_postfix' => '',
				'woocommerce_wf_invoice_as_ordernumber' => "Yes",
				'woocommerce_wf_enable_invoice' => "Yes",
				'woocommerce_wf_add_customer_note_in_invoice' => "No", //Add customer note
				'woocommerce_wf_packinglist_variation_data' => 'Yes', //Add product variation data
				'wf_' . $this->module_base . '_contactno_email' => array('contact_number', 'email', 'vat'),
				'wf_' . $this->module_base . '_product_meta' => array(),
				'woocommerce_wf_orderdate_as_invoicedate' => "Yes",
				'woocommerce_wf_custom_pdf_name' => '[prefix][order_no]',/* Since 2.8.0 */
				'woocommerce_wf_custom_pdf_name_prefix' => 'Invoice_',/* Since 2.8.0 */
				'wf_woocommerce_invoice_free_orders' => 'Yes',
				'wf_woocommerce_invoice_free_line_items' => 'Yes', /* Since 2.8.0 , To display the free line items*/
				'wf_woocommerce_invoice_prev_install_orders' => 'No',
				'wt_pklist_total_tax_column_display_option' => 'amount',
				'wf_woocommerce_invoice_show_print_button' => array('order_listing', 'order_details', 'order_email'),
				'woocommerce_wt_use_latest_settings_invoice' => 'Yes',
				'wt_pdf_invoice_attachment_wc_email_classes' => array(),
				'wt_pklist_restrict_invoice_attachment_for' => array(),
			);
			return $settings;
		} else {
			return $settings;
		}
	}

	/** 
	 *	@since v3.0.3 - Changed the radio button fields to checkbox
	 *	This function is for getting the values for checkbox fields when they are unchecked,
	 *	since the PHP will sent the $_POST the unchecked fields.
	 *	@since 4.7.0 - Added the field `wt_pdf_invoice_attachment_wc_email_classes` and removed the fields `woocommerce_wf_add_invoice_in_admin_mail`.
	 */
	public function single_checkbox_fields($settings, $base_id, $tab_name)
	{
		if ($base_id === $this->module_id) {
			// array of fields with their unchecked values.
			$settings['wt_invoice_general'] = array(
				'woocommerce_wf_enable_invoice'						=> "No",
				'woocommerce_wf_add_' . $this->module_base . '_in_mail'	=> "No",
				'woocommerce_wf_packinglist_frontend_info'			=> "Yes",
				'wf_woocommerce_invoice_prev_install_orders' 		=> "No",
				'wf_woocommerce_invoice_free_orders' 				=> "No",
				'wf_woocommerce_invoice_free_line_items'			=> "No",
				'woocommerce_wt_use_latest_settings_invoice' 		=> "No",
			);
		}

		return $settings;
	}

	/*
	*	@since v3.0.5 - Changed the radio button fields to multi checkbox
	*	This function is for getting the values for checkbox fields when they are unchecked,
	*	since the PHP will sent the $_POST the unchecked fields.
	*/
	public function multi_checkbox_fields($settings, $base_id, $tab_name)
	{
		if ($base_id === $this->module_id) {
			$settings['wt_invoice_general'] = array(
				'wf_' . $this->module_base . '_contactno_email'		=> array(),
				'wf_' . $this->module_base . '_product_meta'		=> array(),
				'wf_woocommerce_invoice_show_print_button'		=> array(),
				'woocommerce_wf_generate_for_orderstatus' 		=> array(),
				'wt_pdf_invoice_attachment_wc_email_classes' 	=> array(),
				'wt_pklist_restrict_invoice_attachment_for' 	=> array(),
			);
		}
		return $settings;
	}

	public function save_multi_checkbox_fields($result, $key, $fields, $base_id)
	{
		if ($base_id === $this->module_id) {
			$result = (isset($fields[$key]) && !isset($_POST[$key])) ? $fields[$key] : $result; // phpcs:ignore WordPress.Security.NonceVerification.Missing
		}
		return $result;
	}

	public function add_bulk_print_buttons($actions)
	{
		$actions['print_invoice'] = __('Print Invoices', 'print-invoices-packing-slip-labels-for-woocommerce');
		$actions['download_invoice'] = __('Download Invoices', 'print-invoices-packing-slip-labels-for-woocommerce');
		return $actions;
	}

	/**
	 *	Adding print/download options in Order list/detail page
	 *	@since 4.0.0 Show the prompt for free orders, when no invoice number for the free order
	 */
	public function add_print_buttons($item_arr, $order, $order_id, $button_location)
	{
		$invoice_number = self::generate_invoice_number($order, false);
		$generate_invoice_for = Wf_Woocommerce_Packing_List::get_option('woocommerce_wf_generate_for_orderstatus', $this->module_id);
		$free_order_enable = Wf_Woocommerce_Packing_List::get_option('wf_woocommerce_invoice_free_orders', $this->module_id);
		$is_show = 0;
		$is_show_prompt = 1;
		$order_status = version_compare( WC()->version, '2.7.0', '<' ) ? $order->status : $order->get_status();

		if (in_array('wc-' . $order_status, $generate_invoice_for) || !empty($invoice_number)) {
			$is_show_prompt = 0;
			$is_show = 1;
		} else {
			if (empty($invoice_number)) {
				$is_show_prompt = 1;
				$is_show = 1;
			}
		}

		if (empty($invoice_number)) {
			if ("No" === $free_order_enable) {
				if (0 === \intval($order->get_total())) {
					$is_show_prompt = 2;
				}
			}
		}

		if (1 === $is_show) {
			//for print button
			$btn_args = array(
				'action' => 'print_invoice',
				'tooltip' => __('Print Invoice', 'print-invoices-packing-slip-labels-for-woocommerce'),
				'is_show_prompt' => $is_show_prompt,
				'button_location' => $button_location,
			);

			//for download button
			$btn_args_dw = array(
				'action' => 'download_invoice',
				'tooltip' => __('Download Invoice', 'print-invoices-packing-slip-labels-for-woocommerce'),
				'is_show_prompt' => $is_show_prompt,
				'button_location' => $button_location,
			);

			if ($button_location == 'detail_page') {
				$btn_args['label']		= __('Print', 'print-invoices-packing-slip-labels-for-woocommerce');
				$btn_args_dw['label']	= __('Download', 'print-invoices-packing-slip-labels-for-woocommerce');
				$invoice_number 	= Wt_Pklist_Common::get_order_meta($order_id, 'wf_invoice_number', true);
				if (!empty($invoice_number)) {
					$invoice_number_exists = true;
				} else {
					$invoice_number_exists = false;
				}
				$item_arr['invoice_details_actions'] = array(
					'button_type' => 'aggregate',
					'button_key' => 'invoice_actions', //unique if multiple on same page
					'button_location' => $button_location,
					'action' => '',
					'label' => __('Invoice', 'print-invoices-packing-slip-labels-for-woocommerce'),
					'tooltip' => __('Print/Download Invoice', 'print-invoices-packing-slip-labels-for-woocommerce'),
					'is_show_prompt' => 0, //always 0
					'items' => array(
						'print_invoice' => $btn_args,
						'download_invoice' => $btn_args_dw
					),
					'exist' => $invoice_number_exists,
				);
			} else {
				$btn_args['label'] = __('Print Invoice', 'print-invoices-packing-slip-labels-for-woocommerce');
				$btn_args_dw['label'] = __('Download Invoice', 'print-invoices-packing-slip-labels-for-woocommerce');
				$item_arr[] = $btn_args;
				$item_arr[] = $btn_args_dw;
			}
		}
		return $item_arr;
	}

	public function add_docdata_metabox($data_arr, $order, $order_id)
	{

		$invoice_number = self::generate_invoice_number($order, false);
		if ("" !== $invoice_number) {
			$data_arr['wf_meta_box_invoice_number'] = array(
				'label' => __('Invoice Number', 'print-invoices-packing-slip-labels-for-woocommerce'),
				'value' => $invoice_number,
			);
		}
		return $data_arr;
	}

	/**
	 *	@since 2.8.0 - Added option to not generate the invoice number for free orders
	 * 	@since 4.7.0 - Changed the feature to send the attachemnt as per the selected email classes instead of order status
	 *
	 */
	public function add_email_attachments($attachments, $order, $order_id, $email_class_id)
	{
		/**
		 * Check if the free order is enabled or not to attach the invoice document.
		 */
		$free_order_enable = Wf_Woocommerce_Packing_List::get_option('wf_woocommerce_invoice_free_orders', $this->module_id);
		if ("No" === $free_order_enable) {
			if (0 === \intval($order->get_total())) {
				return $attachments;
			}
		}

		$chosen_wc_email_classes = Wf_Woocommerce_Packing_List::get_option('wt_pdf_invoice_attachment_wc_email_classes', $this->module_id);
		$chosen_wc_email_classes = apply_filters('wf_pklist_alter_' . $this->module_base . '_attachment_mail_type', $chosen_wc_email_classes, $order_id, $email_class_id, $order);
		$chosen_wc_email_classes = array_unique($chosen_wc_email_classes);
		$generate_invoice_for = Wf_Woocommerce_Packing_List::get_option('woocommerce_wf_generate_for_orderstatus', $this->module_id);
		$generate_invoice_for = apply_filters('wf_pklist_alter_' . $this->module_base . '_attachment_order_status', $generate_invoice_for, $order_id, $email_class_id, $order);
		$restrict_invoice_attachment_for = Wf_Woocommerce_Packing_List::get_option('wt_pklist_restrict_invoice_attachment_for', $this->module_id);
		$order_id = version_compare( WC()->version, '2.7.0', '<' ) ? $order->id : $order->get_id();
		$payment_method = ( version_compare( WC()->version, '2.7.0', '<' ) ? Wt_Pklist_Common_Ipc::get_order_meta( $order_id, '_payment_method', true ) : $order->get_payment_method()); 

		/**
		 * Check if the current email class and current order status are selected for attaching the invoice document.
		 * Or if the order has already an invoice number generated.
		 */
		if (!empty($chosen_wc_email_classes) && in_array($email_class_id, $chosen_wc_email_classes)) {
			if ((!empty($generate_invoice_for) && in_array('wc-' . $order->get_status(), $generate_invoice_for)) ||
				(empty($generate_invoice_for) && !empty(Wt_Pklist_Common::get_order_meta($order_id, 'wf_invoice_number', true)))
			) {
				if ( empty($restrict_invoice_attachment_for) || !in_array($payment_method, $restrict_invoice_attachment_for)) {
					$attachments[] = $this->prepare_pdf_attachments($order_id);
					if ( is_object( $order ) && is_a( $order, 'WC_Order' ) ) {
						apply_filters('wt_upload_documets_to_cloud_storage', $order_id, $chosen_wc_email_classes, $this->module_base);
					}
				}
			}
		}

		return $attachments;
	}

	/**
	 * To Prepare the PDF attachments
	 *
	 * @param int|string $order_id
	 * @return string	$attachment
	 */
	public function prepare_pdf_attachments($order_id)
	{
		$attachment = '';
		if (!empty($order_id) && !is_null($this->customizer)) {
			$order_ids = array($order_id);
			$pdf_name = $this->customizer->generate_pdf_name($this->module_base, $order_ids);
			$this->customizer->template_for_pdf = true;
			$html = $this->generate_order_template($order_ids, $pdf_name);
			$attachment = $this->customizer->generate_template_pdf($html, $this->module_base, $pdf_name, 'attach');
		}
		return $attachment;
	}

	/**
	 *	@since 2.8.0 - Added option to not generate the invoice number for free orders
	 *
	 */
	public function add_email_print_buttons($html, $order, $order_id)
	{
		$free_order_enable = Wf_Woocommerce_Packing_List::get_option('wf_woocommerce_invoice_free_orders', $this->module_id);

		if ("No" === $free_order_enable) {
			if (0 === \intval($order->get_total())) {
				return $html;
			}
		}

		$template_type = $this->module_base;
		$show_print_button_pages = apply_filters('wt_pklist_show_hide_print_button_in_pages', true, 'order_email', $template_type, $order);

		if ($show_print_button_pages) {
			$show_on_frontend = Wf_Woocommerce_Packing_List::get_option('woocommerce_wf_packinglist_frontend_info', $this->module_id);
			$show_print_button_arr = Wf_Woocommerce_Packing_List::get_option('wf_woocommerce_invoice_show_print_button', $this->module_id);

			if (('Yes' === $show_on_frontend) && (in_array('order_email', $show_print_button_arr))) {
				$order_id = version_compare( WC()->version, '2.7.0', '<' ) ? $order->id : $order->get_id();
				$wf_invoice_id = Wt_Pklist_Common::get_order_meta($order_id, 'wf_invoice_number', true);
				$show_print_button_for = Wf_Woocommerce_Packing_List::get_option('woocommerce_wf_generate_for_orderstatus', $this->module_id);
				if ("" !== trim($wf_invoice_id) || in_array('wc-' . $order->get_status(), $show_print_button_for)) {
					$email_btn_label	= apply_filters('wt_pklist_alter_document_button_label', $this->print_btn_label, 'print', 'email', $template_type);
					Wf_Woocommerce_Packing_List::generate_print_button_for_user($order, $order_id, 'print_invoice', $email_btn_label, true);
				}
			}
		}
		return $html;
	}

	/**
	 *	@since 2.8.0 - Added option to not generate the invoice number for free orders
	 *
	 */
	public function add_frontend_print_buttons($html, $order, $order_id)
	{
		$free_order_enable = Wf_Woocommerce_Packing_List::get_option('wf_woocommerce_invoice_free_orders', $this->module_id);

		if ("No" === $free_order_enable) {
			if (0 === \intval($order->get_total())) {
				return $html;
			}
		}
		$template_type = $this->module_base;
		$show_print_button_pages = apply_filters('wt_pklist_show_hide_print_button_in_pages', true, 'order_details', $template_type, $order);

		if ($show_print_button_pages) {
			$show_on_frontend = Wf_Woocommerce_Packing_List::get_option('woocommerce_wf_packinglist_frontend_info', $this->module_id);
			$show_print_button_arr = Wf_Woocommerce_Packing_List::get_option('wf_woocommerce_invoice_show_print_button', $this->module_id);
			if (('Yes' === $show_on_frontend) && (in_array('order_details', $show_print_button_arr))) {
				$order_id = version_compare( WC()->version, '2.7.0', '<' ) ? $order->id : $order->get_id();
				$wf_invoice_id = Wt_Pklist_Common::get_order_meta($order_id, 'wf_invoice_number', true);
				$generate_invoice_for = Wf_Woocommerce_Packing_List::get_option('woocommerce_wf_generate_for_orderstatus', $this->module_id);
				if ("" !== trim($wf_invoice_id) || in_array('wc-' . $order->get_status(), $generate_invoice_for)) {
					$print_btn_label	= apply_filters('wt_pklist_alter_document_button_label',$this->print_btn_label, 'print', 'my_account_order_details', $template_type);
					$download_btn_label	= apply_filters('wt_pklist_alter_document_button_label',$this->download_btn_label, 'download', 'my_account_order_details', $template_type);

					if (true === apply_filters('wt_pklist_show_document_button', true, 'print', 'my_account_order_details', $template_type, $order)) {
						Wf_Woocommerce_Packing_List::generate_print_button_for_user($order, $order_id, 'print_invoice', $print_btn_label);
					}

					if (true === apply_filters('wt_pklist_show_document_button', true, 'download', 'my_account_order_details', $template_type, $order)) {
						Wf_Woocommerce_Packing_List::generate_print_button_for_user($order, $order_id, 'download_invoice', $download_btn_label);
					}
				}
			}
		}
		return $html;
	}

	/**
	 * @since 3.0.0 
	 * Show print invoice button on the order listing page - frontend
	 */
	public function add_frontend_order_list_page_print_buttons($wt_actions, $order, $order_id)
	{
		if ($this->is_show_frontend_print_button($order)) {
			$wt_actions[$this->module_base] = array(
				'print'		=> apply_filters('wt_pklist_alter_document_button_label', $this->print_btn_label, 'print', 'my_account_order_listing', $this->module_base),
				'download'	=> apply_filters('wt_pklist_alter_document_button_label', $this->download_btn_label, 'download', 'my_account_order_listing', $this->module_base),
			);
		}
		return $wt_actions;
	}

	public function is_show_frontend_print_button($order)
	{
		$free_order_enable = Wf_Woocommerce_Packing_List::get_option('wf_woocommerce_invoice_free_orders', $this->module_id);

		if ("No" === $free_order_enable) {
			if (0 === \intval($order->get_total())) {
				return false;
			}
		}
		$template_type = $this->module_base;
		$show_print_button_pages = apply_filters('wt_pklist_show_hide_print_button_in_pages', true, 'order_listing', $template_type, $order);

		if ($show_print_button_pages) {
			$show_on_frontend = Wf_Woocommerce_Packing_List::get_option('woocommerce_wf_packinglist_frontend_info', $this->module_id);
			$show_print_button_arr = Wf_Woocommerce_Packing_List::get_option('wf_woocommerce_invoice_show_print_button', $this->module_id);
			if (('Yes' === $show_on_frontend) && (in_array('order_listing', $show_print_button_arr))) {
				$order_id = version_compare( WC()->version, '2.7.0', '<' ) ? $order->id : $order->get_id();
				$wf_invoice_id = Wt_Pklist_Common::get_order_meta($order_id, 'wf_invoice_number', true);
				$generate_invoice_for = Wf_Woocommerce_Packing_List::get_option('woocommerce_wf_generate_for_orderstatus', $this->module_id);
				if ("" !== trim($wf_invoice_id) || in_array('wc-' . $order->get_status(), $generate_invoice_for)) {
					return true;
				}
			}
		}
		return false;
	}

	/**
	 * 	Print_window for invoice
	 * 	@param $orders : order ids
	 *	@param $action : (string) download/preview/print
	 *	@since 2.6.2 Added compatibilty preview PDF
	 */
	public function print_it($order_ids, $action)
	{
		$template_type = $this->module_base;
		if ("print_invoice" === $action || "download_invoice" === $action || "preview_invoice" === $action) {
			if ("Yes" !== $this->is_enable_invoice) /* invoice not enabled so only allow preview option */ {
				if ("print_invoice" === $action || "download_invoice" === $action) {
					return;
				} else {
					if (!Wf_Woocommerce_Packing_List_Admin::check_role_access()) //Check access
					{
						return;
					}
				}
			}
			if (!is_array($order_ids)) {
				return;
			}

			if (!is_null($this->customizer)) {
				if (count($order_ids) > 1) {
					$sort_order = apply_filters('wt_pklist_sort_orders', 'desc', $this->module_base, $action); // To choose the sorting of the orders when doing bulk print or download.
					if ('asc' ===  $sort_order) {
						sort($order_ids);
					}
				}

				$pdf_name = $this->customizer->generate_pdf_name($this->module_base, $order_ids);
				if ("download_invoice" === $action || "preview_invoice" === $action) {
					if (!isset($_GET['dbg'])) { // phpcs:ignore WordPress.Security.NonceVerification.Recommended
						ob_start();
					}
					$this->customizer->template_for_pdf = true;

					if ("preview_invoice" === $action) {
						$html = $this->customizer->get_preview_pdf_html($this->module_base);
						$html = $this->generate_order_template_for_invoice_preview($order_ids, $pdf_name, $html, $action);
					} else {
						$html = $this->generate_order_template($order_ids, $pdf_name);
					}
					$html = Wf_Woocommerce_Packing_List_Admin::qrcode_barcode_visibility($html, $template_type);
					$action = str_replace('_' . $this->module_base, '', $action);
					$this->customizer->generate_template_pdf($html, $this->module_base, $pdf_name, $action);
					if (!isset($_GET['dbg'])) { // phpcs:ignore WordPress.Security.NonceVerification.Recommended
						ob_end_clean();
					}
				} else {
					if (!isset($_GET['dbg'])) { // phpcs:ignore WordPress.Security.NonceVerification.Recommended
						ob_start();
					}
					$html = $this->generate_order_template($order_ids, $pdf_name, "", $action);
					$html = Wf_Woocommerce_Packing_List_Admin::qrcode_barcode_visibility($html, $template_type);
					if (!isset($_GET['dbg'])) { // phpcs:ignore WordPress.Security.NonceVerification.Recommended
						ob_end_clean();
					}
					// phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped -- Trusted HTML generated by invoice module
					echo $html;
				}
			} else {
				esc_html_e('Customizer module is not active.', 'print-invoices-packing-slip-labels-for-woocommerce');
			}
			exit();
		}
	}

	public function generate_order_template($orders, $page_title, $html = "", $action = "")
	{
		$template_type = $this->module_base;
		$number_of_orders = count($orders);
		$order_inc = 0;
		$out = '';

		foreach ($orders as $order_id) {
			$lang	= (isset($_GET['lang']) ? sanitize_text_field(wp_unslash($_GET['lang'])) : get_locale()); // phpcs:ignore WordPress.Security.NonceVerification.Recommended
			$lang	= apply_filters('wt_pklist_alter_document_language_for_' . $template_type, $lang, $template_type, $order_id);
			$lang	= apply_filters('wt_pklist_alter_document_language', $lang, $template_type, $order_id);
			do_action('wt_pklist_language_switcher_for_' . $template_type, $lang, $template_type, $order_id);
			$order_inc++;
			$out .= $this->generate_order_template_for_single_order($order_id, $page_title, $html, $action);
			$document_created = Wf_Woocommerce_Packing_List_Admin::created_document_count($order_id, $template_type);
		}


		/**
		 * bulk download page break
		 * @since 4.5.1 - [Fix] - mPDF library shows empty pages.
		 * @since 4.5.2 - [Fix] - The second order over rides to the first page (a4) when bulk printing.
		 */
		if (1 < $number_of_orders && ("print_invoice" === $action || false === Wf_Woocommerce_Packing_List_Admin::check_if_mpdf_used())) {
			$out	= str_replace('</body>', '<div class="pagebreak"></div></body>', $out);
		}

		return $out;
	}

	public function generate_order_template_for_single_order($order_id, $page_title, $html, $action)
	{
		$use_latest_settings_invoice	= Wf_Woocommerce_Packing_List::get_option('woocommerce_wt_use_latest_settings_invoice', $this->module_id);
		$template_type	= $this->module_base;
		$order			= Wt_Pklist_Common::get_order($order_id);
		/**
		 * @since 4.6.0 - Added filter to add before preparing the order package and rendering the html.
		 */
		$pdf_filters = apply_filters('wt_pklist_add_filters_before_rendering_pdf', array(), $this->module_base, $order);
		Wt_Pklist_Common::wt_pklist_pdf_add_filters($pdf_filters);
		$invoice_html 	= Wt_Pklist_Common::get_order_meta($order_id, 'wf_invoice_html', true);
		$order_id_arr[] = $order_id;
		$pdf_name		= $this->customizer->generate_pdf_name($this->module_base, $order_id_arr);
		$html 			= "";
		$out 			= "";

		$upload_loc		= Wf_Woocommerce_Packing_List::get_temp_dir();
		$upload_dir		= $upload_loc['path'];
		$upload_url		= $upload_loc['url'];

		if (!empty($invoice_html)) {
			$file_loc = $upload_dir . '/' . $template_type . '/' . $invoice_html;
			if (!file_exists($file_loc)) {
				$new_invoice_html_set = 1;
			} else {
				$new_invoice_html_set = 0;
				$html_file = @fopen($file_loc, 'r'); // phpcs:ignore WordPress.WP.AlternativeFunctions.file_system_operations_fopen
				if ($html_file && filesize($file_loc) > 0) {
					$html = fread($html_file, filesize($file_loc)); // phpcs:ignore WordPress.WP.AlternativeFunctions.file_system_operations_fread
					fclose($html_file); // phpcs:ignore WordPress.WP.AlternativeFunctions.file_system_operations_fclose
				} else {
					$new_invoice_html_set = 1;
					if ($html_file) {
						fclose($html_file); // phpcs:ignore WordPress.WP.AlternativeFunctions.file_system_operations_fclose
					}
				}
			}
		} else {
			$new_invoice_html_set = 1;
		}



		if ((trim($html) == "") || ($use_latest_settings_invoice == "Yes")) {
			$html = $this->customizer->get_template_html($template_type);
			$new_invoice_html_set = 1;

			$style_blocks = $this->customizer->get_style_blocks($html);
			$html = $this->customizer->remove_style_blocks($html, $style_blocks);

			$out .= $this->customizer->generate_template_html($html, $template_type, $order);

			$out = $this->customizer->append_style_blocks($out, $style_blocks);
			$out = $this->customizer->append_header_and_footer_html($out, $template_type, $page_title);
		} else {
			$payment_method_slug	= $order->get_payment_method();
			$paymethod_title	= $order->get_payment_method_title();
			$paymethod_title	= __($paymethod_title, 'print-invoices-packing-slip-labels-for-woocommerce'); // phpcs:ignore WordPress.WP.I18n.NonSingularStringLiteralText @codingStandardsIgnoreLine
			$custom_payment_key = "custom_payment_key";
			$custom_script_regex = '/<script id="custom_payment_key"[^>]*>[\s\S]*' . $custom_payment_key . '[\s\S]*?<\/script>/';

			$order_statuses_arr = array('wc-on-hold', 'wc-pending', 'wc-failed');
			if (!in_array('wc-' . $order->get_status(), $order_statuses_arr)) {
				$updated_script = '<script id="custom_payment_key">var custom_render_block_key = "custom_payment_key";let current = document.querySelector(".wfte_product_table_payment_method_label");let nextSibling = current.nextElementSibling;console.log(nextSibling.innerHTML);nextSibling.innerHTML="' . $paymethod_title . '";let paylink_elm = document.querySelector(".wfte_payment_link");paylink_elm.classList.add("wfte_hidden"); </script>';
			} else {
				$updated_script = '<script id="custom_payment_key">var custom_render_block_key = "custom_payment_key";let current = document.querySelector(".wfte_product_table_payment_method_label");let nextSibling = current.nextElementSibling;console.log(nextSibling.innerHTML);nextSibling.innerHTML="' . $paymethod_title . '"</script>';
			}

			if (preg_match($custom_script_regex, $html)) {
				$html = preg_replace($custom_script_regex, $updated_script, $html);
			} else {
				$html .= $updated_script;
			}

			$out .= $html;

			$new_invoice_html_set = 1;
		}

		$style_regex = '/<style id="template_font_style"[^>]*>[\s\S]*?<\/style>/';
		$updated_style = '<style id="template_font_style">*{font-family:"DeJaVu Sans", monospace;}.template_footer{/*position:absolute;bottom:0px;*/}</style>';
		
		$footer_to_bottom = true;
		$footer_text = Wf_Woocommerce_Packing_List::get_option('woocommerce_wf_packinglist_footer');
		$footer_text_word_count = str_word_count($footer_text);
		if ($footer_text_word_count > 40) {
			$footer_to_bottom = false;
		}
		
		/**
		 *  Alter footer to the bottom.
		 *  When true, the footer is positioned at the bottom (absolute positioning).
		 *  When false, the footer flows with the content.

		 *   @param bool $footer_to_the_bottom The footer to the bottom.
		 *   @param object $order The order.
		 *   @param string $template_type The template type.
		 *   @return bool The boolean value.
		 * 
		 *   @hook wt_pklist_footer_to_the_bottom
		 */

		$footer_to_the_bottom = apply_filters('wt_pklist_footer_to_the_bottom', $footer_to_bottom, $order, $template_type);		
		if ($footer_to_the_bottom) {
			$updated_style = '<style id="template_font_style">*{font-family:"DeJaVu Sans", monospace;}.template_footer{position:absolute;bottom:0px;}</style>';

			$is_mpdf_used = Wf_Woocommerce_Packing_List_Admin::check_if_mpdf_used();
			if (is_rtl() && ($is_mpdf_used === true)) {
				$updated_style = '<style id="template_font_style">*{font-family:"DeJaVu Sans", monospace;}.template_footer{position:absolute;bottom:0px;right:0px;}</style>';
			}
		}

		if ($action == "print_invoice") {
			$updated_style = '<style id="template_font_style">*{/*font-family:"DeJaVu Sans", monospace;*/}.template_footer{/*position:absolute;bottom:0px;*/}</style>';
		}

		if (preg_match($style_regex, $out)) {
			$out = preg_replace($style_regex, $updated_style, $out);
		}

		if ($new_invoice_html_set === 1) {
			if (!is_dir($upload_dir)) {
				@mkdir($upload_dir, 0700); // phpcs:ignore WordPress.WP.AlternativeFunctions.file_system_operations_mkdir
			}

			//document type specific subfolder
			$upload_dir = $upload_dir . '/' . $template_type;
			$upload_url = $upload_url . '/' . $template_type;
			if (!is_dir($upload_dir)) {
				@mkdir($upload_dir, 0700); // phpcs:ignore WordPress.WP.AlternativeFunctions.file_system_operations_mkdir
			}

			//if directory successfully created
			if (is_dir($upload_dir)) {
				$file_name = $pdf_name . '.html';
				$file_path = $upload_dir . '/' . $pdf_name . '.html';
				$file_url = $upload_url . '/' . $pdf_name . '.html';
				//$myfile = fopen($file_path, "w") or die("Unable to open file!");
				$fh = @fopen($file_path, "w"); // phpcs:ignore WordPress.WP.AlternativeFunctions.file_system_operations_fopen
				if (is_resource($fh)) {
					fwrite($fh, $out); // phpcs:ignore WordPress.WP.AlternativeFunctions.file_system_operations_fwrite
					fclose($fh); // phpcs:ignore WordPress.WP.AlternativeFunctions.file_system_operations_fclose
				}
				Wt_Pklist_Common::update_order_meta($order_id, 'wf_invoice_html', $file_name);
			}
		}

		/**
		 * @since 4.6.0 - Remove the filters which were added before preparing the order package and rendering the html.
		 */
		Wt_Pklist_Common::wt_pklist_pdf_remove_filters($pdf_filters);

		return $out;
	}

	public function generate_order_template_for_invoice_preview($orders, $page_title, $html = "", $action = "")
	{
		$template_type = $this->module_base;
		if ("" === $html) {
			//taking active template html
			$html = $this->customizer->get_template_html($template_type);
		}
		$style_blocks = $this->customizer->get_style_blocks($html);
		$html = $this->customizer->remove_style_blocks($html, $style_blocks);
		$out = '';
		if ("" !== $html) {
			$number_of_orders = count($orders);
			$order_inc = 0;
			foreach ($orders as $order_id) {
				$order_inc++;
				$order	= Wt_Pklist_Common::get_order($order_id);
				if (count($orders) > 1) {
					self::generate_invoice_number($order, true, 'set');
				}
				$out .= $this->customizer->generate_template_html($html, $template_type, $order);
				if ("preview_invoice" !== $action) {
					$document_created = Wf_Woocommerce_Packing_List_Admin::created_document_count($order_id, $template_type);
				}
				if ($number_of_orders > 1 && $order_inc < $number_of_orders) {
					$out .= '<p class="pagebreak"></p>';
				} else {
					//$out.='<p class="no-page-break"></p>';
				}
			}
			$out = $this->customizer->append_style_blocks($out, $style_blocks);
			$out = $this->customizer->append_header_and_footer_html($out, $template_type, $page_title);
		}
		$style_regex = '/<style id="template_font_style"[^>]*>[\s\S]*?<\/style>/';
		$updated_style = '<style id="template_font_style">*{font-family:"DeJaVu Sans", monospace;}.template_footer{/*position:absolute;bottom:0px;*/}</style>';

		$footer_to_bottom = true;
		$footer_text = Wf_Woocommerce_Packing_List::get_option('woocommerce_wf_packinglist_footer');
		$footer_text_word_count = str_word_count($footer_text);
		if ($footer_text_word_count > 40) {
			$footer_to_bottom = false;
		}

		/**
		 *  Alter footer to the bottom.
		 *  When true, the footer is positioned at the bottom (absolute positioning).
		 *  When false, the footer flows with the content.

		 *   @param bool $footer_to_the_bottom The footer to the bottom.
		 *   @param object $order The order.
		 *   @param string $template_type The template type.
		 *   @return bool The boolean value.
		 * 
		 *   @hook wt_pklist_footer_to_the_bottom
		 */

		$footer_to_the_bottom = apply_filters('wt_pklist_footer_to_the_bottom', $footer_to_bottom, $order, $template_type);
		if ($footer_to_the_bottom) {
			$updated_style = '<style id="template_font_style">*{font-family:"DeJaVu Sans", monospace;}.template_footer{position:absolute;bottom:0px;}</style>';

			$is_mpdf_used = Wf_Woocommerce_Packing_List_Admin::check_if_mpdf_used();
			if (is_rtl() && ($is_mpdf_used === true)) {
				$updated_style = '<style id="template_font_style">*{font-family:"DeJaVu Sans", monospace;}.template_footer{position:absolute;bottom:0px;right:0px;}</style>';
			}
		}

		if ($action == "print_invoice") {
			$updated_style = '<style id="template_font_style">*{/*font-family:"DeJaVu Sans", monospace;*/}.template_footer{/*position:absolute;bottom:0px;*/}</style>';
		}

		if (preg_match($style_regex, $out)) {
			$out = preg_replace($style_regex, $updated_style, $out);
		}
		return $out;
	}

	/**
	 * Add the document type as one of the options for the individual print button access 
	 *
	 * @param array $documents
	 * @return array
	 */
	public function add_individual_print_button_in_admin_order_listing_page($documents)
	{
		if (!in_array($this->module_base, $documents)) {
			$documents[$this->module_base] = __("Invoice", "print-invoices-packing-slip-labels-for-woocommerce");
		}
		return $documents;
	}

	/**
	 * Add document print button as per the 'wt_pklist_separate_print_button_enable' value
	 *
	 * @since 4.2.0
	 * @param object $order
	 * @return void
	 */
	public function document_print_btn_on_wc_order_listing_action_column($order)
	{
		$show_print_button	= apply_filters('wt_pklist_show_document_print_button_action_column_free', true, $this->module_base, $order);

		if (!empty($order) && true === $show_print_button) {
			$order_id	= version_compare( WC()->version, '2.7.0', '<' ) ? $order->id : $order->get_id();

			if (in_array($this->module_base, Wf_Woocommerce_Packing_List::get_option('wt_pklist_separate_print_button_enable'))) {
				$invoice_number		= Wt_Pklist_Common::get_order_meta($order_id, 'wf_invoice_number', true);
				$btn_action_name 	= 'wt_pklist_print_document_' . $this->module_base;
				$img_url 			= WF_PKLIST_PLUGIN_URL . 'admin/images/' . $this->module_base . '_logo.png';
				$invoice_no_set = true;

				if (empty($invoice_number)) {
					$invoice_no_set = false;
					$btn_action_name	= $btn_action_name . '_not_yet';
					$img_url 			= WF_PKLIST_PLUGIN_URL . 'admin/images/' . $this->module_base . '.png';
				}

				$action			= 'print_' . $this->module_base;
				$action_title 	= sprintf(
					'%1$s %2$s',
					__("Print", "print-invoices-packing-slip-labels-for-woocommerce"),
					$this->module_title,
				);
				$print_url		= Wf_Woocommerce_Packing_List_Admin::get_print_url($order_id, $action);

				if (true === $invoice_no_set) {
					echo '<a title="' . esc_attr($action_title) . '" class="button wc-action-button wc-action-button-' . esc_attr($btn_action_name) . ' ' . esc_attr($btn_action_name) . ' wt_pklist_action_btn wt_pklist_admin_print_document_btn" href="' . esc_url_raw($print_url) . '" aria-label="' . esc_attr($action_title) . '" target="_blank" style="padding:5px;"><img src="' . esc_url($img_url) . '" ></a>';
				} else {
					$is_show_prompt = 1;
					$free_order_enable = Wf_Woocommerce_Packing_List::get_option('wf_woocommerce_invoice_free_orders', $this->module_id);

					if ("No" === $free_order_enable) {
						if (0 === \intval($order->get_total())) {
							$is_show_prompt = 2;
						}
					}
					$onclick = "return wf_Confirm_Notice_for_Manually_Creating_Invoicenumbers('" . esc_url_raw($print_url) . "',$is_show_prompt)";
					echo '<a title="' . esc_attr($action_title) . '" class="button wc-action-button wc-action-button-' . esc_attr($btn_action_name) . ' ' . esc_attr($btn_action_name) . ' wt_pklist_action_btn" onclick="' . esc_attr($onclick) . '" aria-label="' . esc_attr($action_title) . '" target="_blank" style="padding:5px;"><img src="' . esc_url($img_url) . '" ></a>';
					echo '<a class="wt_pklist_empty_number" data-template-type="' . esc_attr($this->module_base) . '" data-id="' . esc_attr($order_id) . '" style="display:none;"></a>';
					
				}
			}
		}
	}

	/**
	 * To clean the invoice number format values upon the first installation
	 *
	 * @since 4.2.0
	 * 
	 * @return void
	 */
	public function invoice_settings_on_plugin_update()
	{
		$invoice_no_format = Wf_Woocommerce_Packing_List::get_option('woocommerce_wf_invoice_number_format', $this->module_id);
		if ("[number]" === $invoice_no_format) {
			Wf_Woocommerce_Packing_List::update_option('woocommerce_wf_invoice_number_prefix', '', $this->module_id);
			Wf_Woocommerce_Packing_List::update_option('woocommerce_wf_invoice_number_postfix', '', $this->module_id);
		} elseif ("[number][suffix]" === $invoice_no_format) {
			Wf_Woocommerce_Packing_List::update_option('woocommerce_wf_invoice_number_prefix', '', $this->module_id);
		} elseif ("[prefix][number]" === $invoice_no_format) {
			Wf_Woocommerce_Packing_List::update_option('woocommerce_wf_invoice_number_postfix', '', $this->module_id);
		}
	}

	/**
	 * Get the saved data of the invoice module
	 *
	 * @since 4.5.0
	 * @param array $plugin_data
	 * @param string $page
	 * @return array
	 */
	public function get_plugin_data($plugin_data, $page)
	{
		return ($this->module_id === $page) ? array($this->module_base =>  get_option($this->module_id)) : $plugin_data;
	}

	public function get_attachment_for_ubl_invoice($order_ids)
	{
		$this->customizer = new Wf_Woocommerce_Packing_List_Customizer();
		$this->module_base = 'invoice';
		$attachments = array();
		$pdf_name = $this->customizer->generate_pdf_name($this->module_base, $order_ids);
		$this->customizer->template_for_pdf = true;
		$html = $this->generate_order_template($order_ids, $pdf_name);
		$attachments[] = $this->customizer->generate_template_pdf($html, $this->module_base, $pdf_name, 'attach');
		return $attachments;
	}

	public function get_attachment_name_for_ubl_invoice($order_ids)
	{
		$this->customizer = new Wf_Woocommerce_Packing_List_Customizer();
		return $this->customizer->generate_pdf_name($this->module_base, $order_ids);
	}

	/**
	 * WC Subscriptions Support
	 * 
	 * To prevent invoice number duplication, the copying of the invoice number should be avoided. 
	 * 
	 * @since 4.7.5
	*/
	public function remove_invoice_number_from_renewal_order_meta( $order_meta ) {
		unset( $order_meta['wf_invoice_number'] );
		return $order_meta;
    }
	public function subscriptions_remove_renewal_invoice_number_meta( $order_meta_query ) {
        return $order_meta_query . " AND meta_key NOT IN ( 'wf_invoice_number' )";
    }

}
new Wf_Woocommerce_Packing_List_Invoice();
