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

if ( ! class_exists( 'YITH_WooCommerce_Pdf_Invoice' ) ) {

	/**
	 * Implements features of Yith WooCommerce Pdf Invoice
	 *
	 * @class   YITH_WooCommerce_Pdf_Invoice
	 * @package Yithemes
	 * @since   1.0.0
	 * @author  Your Inspiration Themes
	 */
	class YITH_WooCommerce_Pdf_Invoice {

		/**
		 * @var bool the preview mode prevent the use of the counter
		 */
		public $preview_mode = false;

		/**
		 * @var bool set is subtotal should include discount
		 */
		public $subtotal_incl_discount = true;

		public $action_create_invoice = 'create-invoice';

		/**
		 * @var bool set if packing slip generation is enabled
		 */
		public $enable_packing_slip = false;

		/**
		 * @var YITH_YWPI_Backend shortcut to backend instance
		 */
		public $backend = null;

        /**
         * @var string Premium version landing link
         */
        protected $_premium_landing = 'https://yithemes.com/themes/plugins/yith-woocommerce-pdf-invoice/';

        /**
         * @var string Plugin official documentation
         */
        protected $_official_documentation = 'https://docs.yithemes.com/yith-woocommerce-pdf-invoice/';

        /**
         * @var string Official plugin landing page
         */
        protected $_premium_live = 'https://plugins.yithemes.com/yith-woocommerce-pdf-invoice/';

        /**
         * @var string Official plugin support page
         */
        protected $_support = 'https://yithemes.com/my-account/support/dashboard/';

        /**
         * @var string Yith WooCommerce Pdf invoice panel page
         */
        protected $_panel_page = 'yith_woocommerce_pdf_invoice_panel';

		/**
		 * Constructor
		 *
		 * Initialize plugin and registers actions and filters to be used
		 *
		 * @since  1.0
		 * @author Lorenzo giuffrida
		 * @access public
		 */
		public function __construct() {
			$this->init_plugin_options();

			$this->backend = YITH_YWPI_Backend::get_instance();

			$this->add_buttons_on_customer_orders_page();
			$this->add_features_on_admin_orders_page();

			$this->add_order_status_related_actions();

			/*
			* Check if invoice should be attached to emails
			*/
			add_filter( 'woocommerce_email_attachments', array( $this, 'attach_documents_to_email' ), 99, 3 );


			//  Add stylesheets and scripts files to back-end
			add_action( 'wp_enqueue_scripts', array( $this, 'enqueue_styles' ) );

			add_action( 'admin_enqueue_scripts', array( $this, 'enqueue_scripts' ) );

			//  *************************************************
			//  Hook action in the ywpi-invoice-template.php file
			require_once( 'class.yith-ywpi-template.php' );

			/**
			 * Manage the action 'create'
			 */
			add_action( 'admin_action_create', array(
				$this,
				'manage_document_action'
			) );

			/**
			 * Manage the action 'view'
			 */
			add_action( 'admin_action_view', array(
				$this,
				'manage_document_action'
			) );

			/**
			 * Manage the action 'reset'
			 */
			add_action( 'admin_action_reset', array(
				$this,
				'manage_document_action'
			) );

			/**
			 * Manage the action 'preview'
			 */
			add_action( 'admin_action_preview', array(
				$this,
				'manage_document_action'
			) );

            /**
             * Manage the action 'preview'
             */
            add_action( 'admin_action_regenerate', array(
                $this,
                'manage_document_action'
            ) );

			add_action( 'init', array(
				$this,
				'manage_myaccount_buttons'
			) );

            /* === Show Plugin Information === */

            add_filter( 'plugin_action_links_' . plugin_basename( YITH_YWPI_DIR . '/' . basename( YITH_YWPI_FILE ) ), array(
                $this,
                'action_links',
            ) );

            add_filter( 'yith_show_plugin_row_meta', array( $this, 'plugin_row_meta' ), 10, 5 );

		}


		/**
		 * Enqueue js file
		 *
		 * @since  1.0
		 * @author Daniel Sanchez
		 */
		public function enqueue_scripts() {

			/* ====== Script ====== */

			wp_register_script( 'ywpi_' . YITH_YWPI_ASSETS_URL . '-js', YITH_YWPI_ASSETS_URL . '/js/yith-wc-pdf-invoice-admin.js', array(
				'jquery',
				'jquery-ui-sortable'
			), YITH_YWPI_VERSION, true );

			wp_localize_script( 'ywpi_' . YITH_YWPI_ASSETS_URL . '-js', 'yith_wc_pdf_invoice_free_object', apply_filters( 'yith_wc_pdf_invoice_free_admin_localize', array(
				'ajax_url'    => admin_url( 'admin-ajax.php' ),
				'ajax_loader' => 'ywpi_css', YITH_YWPI_ASSETS_URL . '/images/ajax-loader.gif',
				'logo_message_1' => esc_html__( "The logo your uploading is ", 'yith-woocommerce-pdf-invoice' ),
				'logo_message_2' => esc_html__( ". Logo must be no bigger than 300 x 150 pixels", 'yith-woocommerce-pdf-invoice' ),
                'electronic_invoice'=> get_option('ywpi_electronic_invoice_enable')
			) ) );

			wp_enqueue_script( 'ywpi_' . YITH_YWPI_ASSETS_URL . '-js' );

		}

		/**
		 * Enqueue css file
		 *
		 * @since  1.0
		 * @author Lorenzo giuffrida
		 */
		public function enqueue_styles() {

			wp_enqueue_style( 'ywpi_css', YITH_YWPI_ASSETS_URL . '/css/ywpi.css' );
		}

		public function manage_myaccount_buttons() {
			if ( is_admin() ) {
				return;
			}

			$this->manage_document_action();
		}

		/**
		 * Create invoice
		 * @author Lorenzo Giuffrida
		 * @since  1.0.0
		 */
		public function manage_document_action() {
//			//todo Check authorization
//			if ( ! current_user_can( 'manage_woocommerce' ) ) {
//				return;
//			}

			if ( ! isset( $_REQUEST['type'] ) ) {
				return;
			}

			if ( ! isset( $_REQUEST['id'] ) ) {
				return;
			}

			if ( ! isset( $_REQUEST['action'] ) ) {
				return;
			}

			if ( ! isset( $_REQUEST['_wpnonce'] ) ) {
				return;
			}

			$type     = $_REQUEST['type'];
			$order_id = $_REQUEST['id'];
			$action   = $_REQUEST['action'];

			$nonce        = $_REQUEST['_wpnonce'];
			$nonce_action = $action . $type . $order_id;

            $extension = isset( $_REQUEST['extension'] ) ? $_REQUEST['extension'] : 'pdf';

			if ( ! wp_verify_nonce( $nonce, $nonce_action ) ) {
				return;
			}

			$allowed_type = array( 'invoice', 'packing-slip', 'proforma', 'credit-note','xml' );
			if ( ! in_array( strtolower( $type ), $allowed_type ) ) {
				throw new Exception( esc_html__( 'YITH PDF Invoice: unknown document type. Unable to manage this action.', 'yith-woocommerce-pdf-invoice' ) );
			}

			switch ( $action ) {
				case 'create' :

					$this->create_document( $order_id, $type, $extension );

					do_action( 'ywpi_create_document', $this, $order_id, $type, $extension );

					break;

				case 'view' :
					$this->view_document( $order_id, $type, $extension );
					break;

				case 'reset' :
					$this->reset_document( $order_id, $type, $extension );
					break;

				case 'preview' :
					$this->view_preview( $order_id, $type, $extension );
					break;

                case 'regenerate' :
                    $this->regenerate_document( $order_id, $type, $extension );

                    do_action( 'ywpi_regenerate_document', $this, $order_id, $type, $extension );

                    break;

				default:
					return;
			}

			if ( is_admin() && isset( $_SERVER['HTTP_REFERER'] ) ) {
				$location = $_SERVER['HTTP_REFERER'];

				if( !wp_safe_redirect( $location ) ){
				    wp_redirect($location);
                }
				exit();
			}
		}


		/**
		 * Retrieve the plugin option value for the document notes visibility
		 *
		 * @param YITH_Document $document
		 *
		 * @return mixed|void
		 * @author Lorenzo Giuffrida
		 * @since  1.0.0
		 */
		public function is_visible_document_notes( $document ) {
			$is_visible = '';

			if ( $document instanceof YITH_Credit_Note ) {
				$is_visible = ywpi_get_option( 'ywpi_show_invoice_notes', $document );
			} elseif ( ywpi_document_behave_as_invoice( $document ) ) {
				$is_visible = ywpi_get_option( 'ywpi_show_credit_note_notes', $document );
			} elseif ( $document instanceof YITH_Shipping ) {
				$is_visible = ywpi_get_option( 'ywpi_packing_slip_show_notes', $document );
			}

			return apply_filters( 'is_visible_document_notes', $is_visible, $document );
		}


		/**
		 * Retrieve the notes to be shown when printing a generic document
		 *
		 * @param YITH_Document $document
		 *
		 * @return mixed
		 * @author Lorenzo Giuffrida
		 * @since  1.0.0
		 */
		function get_document_notes( $document ) {
			$notes = '';
			if ( $document instanceof YITH_Invoice ) {
				$notes = ywpi_get_option( 'ywpi_invoice_notes', $document );
			} elseif ( $document instanceof YITH_Pro_Forma ) {
				$notes = ywpi_get_option( 'ywpi_pro_forma_notes', $document );
			} elseif ( $document instanceof YITH_Shipping ) {
				$notes = ywpi_get_option( 'ywpi_packing_slip_notes', $document );
			} elseif ( $document instanceof YITH_Credit_Note ) {
				$notes = ywpi_get_option( 'ywpi_credit_note_notes', $document );
			}


			return apply_filters( 'get_document_notes', $this->replace_customer_details_pattern( $notes, $document->order->get_id() ), $document );
		}

		/**
		 * Check if a footer should be shown for a document
		 *
		 * @param YITH_Document $document
		 *
		 * @return mixed|void
		 * @author Lorenzo Giuffrida
		 * @since  1.0.0
		 */
		function is_visible_document_footer( $document ) {
			$is_visible = '';


			if ( $document instanceof YITH_Credit_Note ) {
				$is_visible = ywpi_get_option( 'ywpi_show_credit_note_footer', $document );
			} elseif ( ywpi_document_behave_as_invoice( $document ) ) {
				$is_visible = 'yes' == ywpi_get_option( 'ywpi_show_invoice_footer', $document );
			} elseif ( $document instanceof YITH_Shipping ) {
				$is_visible = 'yes' == ywpi_get_option( 'ywpi_packing_slip_show_footer', $document );
			}

			return apply_filters( 'is_visible_document_footer', $is_visible, $document );
		}

		/**
		 * Retrieve the document title based on the document type
		 *
		 * @param YITH_Document $document
		 *
		 * @author Lorenzo Giuffrida
		 *
		 * @return string
		 *
		 * @since  1.0.0
		 */
		public function get_document_title( $document ) {
			$title = '';

			if ( $document instanceof YITH_Invoice ) {
				$title = esc_html__( 'Invoice', 'yith-woocommerce-pdf-invoice' );
			} else if ( $document instanceof YITH_Shipping ) {
				$title = esc_html__( 'Packing slip', 'yith-woocommerce-pdf-invoice' );
			}

			return apply_filters('ywpi_document_title',$title,$document);
		}

		/**
		 * Initialize the plugin options
		 *
		 * @author Lorenzo Giuffrida
		 * @since  1.0.0
		 */
		public function init_plugin_options() {
			$this->preview_mode = "yes" === get_option( 'ywpi_preview_mode', false );

			$this->subtotal_incl_discount = "yes" === get_option( 'ywpi_subtotal_inclusive_discount', false );
			$this->enable_packing_slip    = 'yes' == ywpi_get_option( 'ywpi_enable_packing_slip', 'no' );
		}

		/**
		 * Add some actions triggered by order status
		 *
		 * @author Lorenzo Giuffrida
		 * @since  1.0.0
		 */
		public function add_order_status_related_actions() {
			//  If invoice generation is only manual, no automatic actions will be added
			if ( 'auto' != ywpi_get_option( 'ywpi_invoice_generation' ) && 'auto' != ywpi_get_option( 'ywpi_packing_slip_generation' ) ) {
				return;
			}

			if ( 'new' === ywpi_get_option( 'ywpi_create_invoice_on' ) ) {
                $array_status = array('on-hold', 'processing', 'completed');
			    foreach ($array_status as $status){
                    add_action( 'woocommerce_order_status_' . $status, array( $this, 'create_automatic_invoice' ) );
                }
			} else if ( 'processing' === ywpi_get_option( 'ywpi_create_invoice_on' ) ) {
				add_action( 'woocommerce_order_status_processing', array( $this, 'create_automatic_invoice' ) );
			} else if ( 'completed' === ywpi_get_option( 'ywpi_create_invoice_on' ) ) {
				add_action( 'woocommerce_order_status_completed', array( $this, 'create_automatic_invoice' ) );
			}
		}

		/**
		 * Create an invoice for a specific order
		 *
		 * @param int $order_id the order id
		 *
		 * @author Lorenzo Giuffrida
		 * @since  1.0.0
		 */
		public function create_automatic_invoice( $order_id ) {
			//  In "Preview mode" it's not possible to generate automatically documents
			if ( $this->preview_mode ) {
				return;
			}

			//  Lets a third party plugin to stop the creation of invoices in automatic mode
			if ( ! apply_filters( 'yith_ywpi_create_automatic_invoices', true, $order_id ) ) {
				return;
			}

            $invoice_generation = get_option('ywpi_invoice_generation');

            if ( $invoice_generation == 'auto' )
                $this->create_document( $order_id, 'invoice' );

			$packing_slip_generation = get_option('ywpi_packing_slip_generation');

			if ( $packing_slip_generation == 'auto' )
			    $this->create_document( $order_id, 'packing-slip' );

			do_action('ywpi_create_automatic_invoice', $order_id);
		}


        public function create_automatic_credit_note( $order_id ) {

		    $order = wc_get_order( $order_id );
            $order_refunds = $order->get_refunds();

            if ( isset( $order_refunds[0] ) ){
                $this->create_document( $order_refunds[0]->get_id(), 'credit-note' );
            }
        }

		/**
		 * Retrieve the link for a specific action on the order
		 *
		 * @param string $action   The action to perform. It could be 'view','create', 'reset' or 'preview'
		 * @param string $type     The type of document. It could be 'invoice', 'packing-slip', 'credit-note', 'proforma'
		 * @param int    $order_id The order id
		 *
		 * @return string
		 * @author Lorenzo Giuffrida
		 * @since  1.0.0
		 */
		public function get_action_url( $action, $type, $order_id, $extension = 'pdf' ) {

			$args = array(
				'action'    => $action,
				'type'      => $type,
				'id'        => $order_id,
                'extension' =>  $extension
			);

			$nonce_action = $action . $type . $order_id;

			return esc_url( wp_nonce_url( add_query_arg( $args ), $nonce_action ) );
		}


		/**
		 * Attach the documents to the email
		 *
		 * @param array  $attachments
		 * @param string $status
		 * @param mixed  $object
		 *
		 * @return array
		 * @author Lorenzo Giuffrida
		 * @since  1.0.0
		 */
		public function attach_documents_to_email( $attachments, $status, $object ) {


			if ( ! $object instanceof WC_Order ) {
				return $attachments;
			}

            if ( $status == 'customer_refunded_order' && 'manual' != ywpi_get_option( 'ywpi_invoice_generation' ) ){
                $this->create_automatic_credit_note( $object->get_id() );
            }

            $order_refunds = $object->get_refunds();

            if ( isset( $order_refunds[0] ) && apply_filters('ywpi_allow_attach_credit_note', true ) ){

                $credit_note_path = $this->get_credit_note_attachment( $status, $order_refunds[0]->get_id() );

                if ( $credit_note_path ) {
                    $attachments[] = $credit_note_path;
                }
            }

			$invoice_path = $this->get_invoice_attachment( $status, yit_get_prop( $object, 'id' ) );

			if ( $invoice_path ) {
				$attachments[] = $invoice_path;
			}

			$pro_forma_path = $this->get_pro_forma_attachment( $status, yit_get_prop( $object, 'id' ) );
			if ( $pro_forma_path ) {
				$attachments[] = $pro_forma_path;
			}

			return $attachments;
		}

		/**
		 * Retrieve the order invoice path
		 *
		 * @param string $status   current order status
		 * @param int    $order_id order id
		 *
		 * @return string
		 */
		public function get_invoice_attachment( $status, $order_id ) {

			$allowed_statuses = apply_filters( 'ywpi_attach_invoice_on_order_status', array(
				'customer_invoice',
				'customer_processing_order',
				'customer_completed_order',
			) );

			if ( isset( $status ) && in_array( $status, $allowed_statuses ) ) {
				$invoice = new YITH_Invoice( $order_id );

				if ( $invoice->is_valid() && $invoice->generated() ) {
					return $invoice->get_full_path();
				}
			}

			return '';
		}


        public function get_credit_note_attachment( $status, $refund_id ) {


            $allowed_statuses = apply_filters( 'ywpi_attach_credit_on_order_status', array(
                'customer_refunded_order',
            ) );

            if ( isset( $status ) && in_array( $status, $allowed_statuses ) ) {

                $credit_note = new YITH_Credit_Note( $refund_id );

                if ( $credit_note->generated() ) {
                    return $credit_note->get_full_path();
                }
            }

            return '';
        }

		/**
		 * Retrieve the proforma invoice path
		 *
		 * @param string $status   current order status
		 * @param int    $order_id order id
		 *
		 * @return string
		 */
		public function get_pro_forma_attachment( $status, $order_id ) {

			return '';
		}

		/**
		 * Add front-end button for actions available for customers
		 */
		public function add_buttons_on_customer_orders_page() {
			/**
			 * Show print invoice button on frontend orders page
			 */
			add_action( 'woocommerce_my_account_my_orders_actions', array(
				$this,
				'print_invoice_button',
			), 10, 2 );
		}

		/**
		 * Add back-end buttons for actions available for admins
		 */
		public function add_features_on_admin_orders_page() {
			add_action( 'manage_shop_order_posts_custom_column', array(
				$this,
				'show_invoice_custom_column_data',
			), 99 );

		}

		/**
		 * Append invoice information on order_title column, if current order has an invoice associated
		 *
		 * @param string $column the column name being shown
		 */
		public function show_invoice_custom_column_data( $column ) {
			global $post;
			$column_to_check = version_compare ( WC ()->version, '3.3', '<' ) ? 'order_title' : 'order_number' ;
			if ( $column_to_check != $column  ) {
				return;
			}

			$this->show_invoice_information_link( $post );
		}

		/**
		 * show a link with the order invoiced status
		 *
		 * @param WP_Post $post
		 *
		 * @author Lorenzo Giuffrida
		 * @since  1.0.0
		 */
		public function show_invoice_information_link( $post ) {
			$order = wc_get_order( $post );

			$invoice = new YITH_Invoice( yit_get_prop( $order, 'id' ) );

			if ( ! $invoice->is_valid() || ! $invoice->generated() ) {
				return;
			}

			$url = apply_filters( 'ywpi_invoice_information_url', $this->get_action_url( 'view', 'invoice', yit_get_prop( $order, 'id' ) ), $order );

			$is_receipt = get_post_meta( yit_get_prop( $order, 'id' ), '_billing_invoice_type' , true );

			if ( $is_receipt != 'receipt' ){
				?>
				<div class="ywpi-invoiced-order">
					<a class="meta ywpi-invoice-information"
					   target="_blank" href="<?php echo $url; ?>"
					   title="<?php esc_html_e( "View Invoice", 'yith-woocommerce-pdf-invoice' ); ?>">
						<?php echo sprintf( esc_html__( "View Invoice No. %s", 'yith-woocommerce-pdf-invoice' ), $invoice->get_formatted_document_number() ); ?>
					</a>
					<?php do_action('ywpi_show_invoice_information_link',$invoice,$order ); ?>
				</div>
				<?php
			}
			else{
				?>
				<div class="ywpi-invoiced-order">
					<a class="meta ywpi-invoice-information"
					   target="_blank" href="<?php echo $url; ?>"
					   title="<?php esc_html_e( "View Receipt", 'yith-woocommerce-pdf-invoice' ); ?>">
						<?php echo esc_html__( "View Receipt", 'yith-woocommerce-pdf-invoice' ); ?>
					</a>
					<?php do_action('ywpi_show_invoice_information_link',$invoice,$order ); ?>
				</div>
				<?php
			}


		}


		/**
		 * Check nounce when an action for generating documents is called
		 *
		 * @param YITH_Document $document the document that is going to be created
		 *
		 * @return bool
		 * @author Lorenzo Giuffrida
		 * @since  1.0.0
		 */
		public function check_invoice_url_for_action( $document ) {

			if ( ! $document ) {
				return false;
			}

			//  Check if the document is for a valid order
			if ( ! $document->is_valid() ) {
				return false;
			}

			return true;
		}


		/**
		 * Create a new document of the type requested, for a specific order
		 *
		 * @param  int   $order_id      the order id for which the document is created
		 * @param string $document_type the document type to be generated
		 *
		 * @return YITH_Document|null
		 */
		public function create_document( $order_id, $document_type = '', $extension = 'pdf' ) {

			$is_receipt = get_post_meta( $order_id, '_billing_invoice_type' , true );

			//  In "Preview mode" it's not possible to generate valid documents
			if ( $this->preview_mode ) {
				return null;
			}

			if ( ! apply_filters( 'yith_ywpi_can_create_document', true, $order_id, $document_type ) ) {
				return null;
			}

			$document = ywpi_get_order_document_by_type( $order_id, $document_type );


			if ( null == $document ) {
				return null;
			}

			if ( ! $document instanceof YITH_Document ) {
				return null;
			}


			/**
			 * If a document of that type exists, return it instead of creating a new one
			 */
			if ( $document->generated() && apply_filters( 'ywpi_skip_document_generation', true, $order_id, $document_type, $extension ) ) {
				return $document;
			}

			/**
			 * For YITH_Invoice and YITH_Credit_Note, assign a new unique number and set other details
			 */
			if ( ! $document->generated() && (( $document instanceof YITH_Invoice ) ||
			     ( $document instanceof YITH_Credit_Note ) )
			) {



				//  Set the document value
				$document->date = apply_filters( 'yith_ywpi_set_document_date', current_time( 'mysql', 0 ), $document );

				if( $document instanceof YITH_Credit_Note ){
				    $document_type = 'credit-note';
                }else{
                    $document_type = 'invoice';
                }

				$document->number = $this->get_next_number( $document, $document_type );

				$prefix           = $document instanceof YITH_Credit_Note ? 'ywpi_credit_note_prefix' : 'ywpi_invoice_prefix';
				$document->prefix = $this->replace_placeholders( ywpi_get_option( $prefix, $document->order ), $document->date );

				$suffix           = $document instanceof YITH_Credit_Note ? 'ywpi_credit_note_suffix' : 'ywpi_invoice_suffix';
				$document->suffix = $this->replace_placeholders( ywpi_get_option( $suffix, $document->order ), $document->date );

				$formatted_key    = $document instanceof YITH_Credit_Note ? 'ywpi_credit_note_number_format' : 'ywpi_invoice_number_format';
				$formatted_number = ywpi_get_option_with_placeholder( $formatted_key, '[number]' );

				$order_number = $document->order instanceof WC_Order ? $document->order->get_order_number() : '';


                $date_to_show = ywpi_get_option( 'ywpi_date_to_show_in_invoice' );

                switch ( $date_to_show ){
                    case 'new' :
                        $date = getdate( strtotime( $document->order->get_date_created() ) );
                        break;

                    case 'completed' :
                        if (  $document->order->get_status() == 'completed' && !$document->order instanceof WC_Order_Refund )
                            $date = getdate( strtotime( $document->order->get_date_completed() ) );
                        else if ( ! $document instanceof YITH_Shipping  && ! $document instanceof YITH_Pro_Forma )
                            $date = getdate( strtotime( $document->date ) );
                        else
                            $date = getdate( strtotime( $document->order->get_date_created() ) );
                        break;

                    case 'invoice_creation' :
                        if ( ! $document instanceof YITH_Shipping  && ! $document instanceof YITH_Pro_Forma )
                            $date = getdate( strtotime( $document->date ) );
                        else
                            $date = getdate( strtotime( $document->order->get_date_created() ) );
                        break;

                    default:
                        $date = getdate( strtotime( $document->order->get_date_created() ) );
                        break;
                }



                $replace_placeholders = str_replace(
					array(
						'[prefix]',
						'[suffix]',
						'[number]',
						'[year]',
						'[month]',
						'[day]',
						'[order_number]'
					),
					array(
						$document->prefix,
						$document->suffix,
						$document->number,
						$date['year'],
						sprintf( "%02d", $date['mon'] ),
						sprintf( "%02d", $date['mday'] ),
						$order_number
					),
					$formatted_number );

				$document->formatted_number = apply_filters( 'yith_ywpi_formatted_invoice_number', $replace_placeholders, $formatted_number, $document );

			}


			if ( $this->create_file( $document, $extension ) ) {

                $document->save( $extension );

                do_action( 'yith_ywpi_document_created', $document );

            }



			return $document;
		}


        /**
         * Regenerate the document for the specific order
         *
         * @param  int   $order_id      the order id for which the document is created
         * @param string $document_type the document type to be generated
         *
         * @return YITH_Document|null
         */
        public function regenerate_document( $order_id, $document_type = '', $extension = 'pdf' ) {

            //  In "Preview mode" it's not possible to generate valid documents
            if ( $this->preview_mode ) {
                return null;
            }

            if ( ! apply_filters( 'yith_ywpi_can_create_document', true, $order_id, $document_type ) ) {
                return null;
            }

            $document = ywpi_get_order_document_by_type( $order_id, $document_type );

            if ( null == $document ) {
                return null;
            }

            if ( ! $document instanceof YITH_Document ) {
                return null;
            }

            /**
             * For YITH_Invoice and YITH_Credit_Note, assign a new unique number and set other details
             */
            if ( ( $document instanceof YITH_Invoice ) ||
                ( $document instanceof YITH_Credit_Note )
            ) {

                //  Set the document value
                apply_filters( 'yith_ywpi_set_document_date', $document->date, $document );


                $formatted_key    = $document instanceof YITH_Credit_Note ?  'ywpi_credit_note_number_format' : 'ywpi_invoice_number_format';
                $formatted_number = ywpi_get_option_with_placeholder( $formatted_key, '[number]' );

                $date = getdate( strtotime( $document->date ) );

				$order_number = $document->order instanceof WC_Order ? $document->order->get_order_number() : '';

                $replace_placeholders = str_replace(
                    array(
                        '[prefix]',
                        '[suffix]',
                        '[number]',
                        '[year]',
                        '[month]',
                        '[day]',
						'[order_number]'
                    ),
                    array(
                        $document->prefix,
                        $document->suffix,
                        $document->number,
                        $date['year'],
                        sprintf( "%02d", $date['mon'] ),
                        sprintf( "%02d", $date['mday'] ),
						$order_number
                    ),
                    $formatted_number );

                $document->formatted_number = apply_filters( 'yith_ywpi_formatted_invoice_number', $replace_placeholders, $formatted_number, $document );
            }


            if ( $this->create_file( $document, $extension ) ) {

                //$document->save();
                do_action( 'yith_ywpi_document_regenerated', $document );
            }

            return $document;
        }

		/**
		 * Show a preview of the document requested, without affecting the counter and settings that should be used only for real invoices
		 *
		 * @param int    $order_id      the order id
		 * @param string $document_type the document type requested
		 *
		 * @return null
		 * @author Lorenzo Giuffrida
		 * @since  1.0.0
		 */
		public function view_preview( $order_id, $document_type = '', $extension ) {
			$document = ywpi_get_order_document_by_type( $order_id, $document_type );

			if ( ( null == $document ) || ! $this->check_invoice_url_for_action( $document ) ) {
				return null;
			}

			$this->create_file( $document );
			$this->show_file( $document->get_full_path() );
		}

		/**
		 * Return the next available invoice number
		 *
		 * @param YITH_Document $document the document that need a new invoice number
		 * @param string        $type     the type of document, 'invoice'(default) or 'credit-note'
		 *
		 * @return int|mixed
		 * @author Lorenzo Giuffrida
		 * @since  1.0.0
		 */
		private function get_next_number( $document, $type = 'invoice' ) {
			/** $document should be an instance of  YITH_Invoice or YITH_Credit_Note */
			if ( ! ( $document instanceof YITH_Invoice ) &&
			     ! ( $document instanceof YITH_Credit_Note ) &&
                ! ( $document instanceof YITH_XML)
			) {
				return;
			}

			$reset_option     = 'invoice' == $type ? 'ywpi_invoice_reset' : 'ywpi_credit_note_reset';
			$last_year_option = 'invoice' == $type ? 'ywpi_invoice_year_billing' : 'ywpi_credit_note_year_billing';

			//  Check if this is the first invoice of the year, in this case, if reset on new year is enabled, restart from 1
			if ( 'yes' === get_option( $reset_option ) ) {
				$last_year = get_option( $last_year_option );

				if ( isset( $last_year ) && is_numeric( $last_year ) ) {
					$current_year = getdate();
					$current_year = $current_year['year'];

					if ( $last_year < $current_year ) {
						//  set new year as last invoiced year and reset invoice number
						ywpi_update_option( $last_year_option, $current_year );

                        if ( $document instanceof YITH_Invoice ){
                            return apply_filters('yith_ywpi_reset_year_invoice_number', 1);
                        }
                        if ( $document instanceof YITH_Credit_Note ){
                            return apply_filters('yith_ywpi_reset_year_document_note_number', 1);

                        }
					}
				}
			}

			$number_option          = 'invoice' == $type || 'xml' == $type ? 'ywpi_invoice_number' : 'ywpi_credit_note_next_number';

			$current_invoice_number = ywpi_get_option( $number_option, $document );


			if ( ! isset( $current_invoice_number ) || ! is_numeric( $current_invoice_number ) ) {
				$current_invoice_number = 1;
			}

            return apply_filters( 'yith_ywpi_current_invoice_number', $current_invoice_number, $document->order, $document  );
		}


		/**
		 * Save the next available invoice number
		 *
		 * @param YITH_Invoice $document
		 *
		 * @author Lorenzo Giuffrida
		 * @since  1.0.0
		 */
		private function increment_next_document_number( $document ) {
			/** $document should be an instance of  YITH_Invoice or YITH_Credit_Note */
			if ( ! ( $document instanceof YITH_Invoice ) &&
			     ! ( $document instanceof YITH_Credit_Note )
			) {
				return;
			}

			// If it's a receipt, do not increment the document number
			$is_receipt = get_post_meta( $document->order->get_id(), '_billing_invoice_type' , true );
			if ( $is_receipt == 'receipt' ){
				return;
			}

			$number_option = ( $document instanceof YITH_Credit_Note ) ? 'ywpi_credit_note_next_number' : 'ywpi_invoice_number';

            ywpi_update_option( $number_option, intval( $document->number ) + 1, $document );
		}


		/**
		 * Replace fixed placeholders from a specific string
		 *
		 * @param string $text the string to be parsed
		 * @param string $date
		 *
		 * @return mixed
		 * @author Lorenzo Giuffrida
		 * @since  1.0.0
		 */
		private function replace_placeholders( $text, $date ) {

			$date = getdate( strtotime( $date ) );

			$replaced_text = str_replace(
				array(
					'[year]',
					'[month]',
					'[day]',
				),
				array(
					$date['year'],
					sprintf( "%02d", $date['mon'] ),
					sprintf( "%02d", $date['mday'] ),
				),
				$text );

			return $replaced_text;
		}

		/**
		 * Show a document
		 *
		 * @param int    $order_id      the order id
		 * @param string $document_type the type of document to show
		 *
		 * @author Lorenzo Giuffrida
		 * @since  1.0.0
		 */
		public function view_document( $order_id, $document_type, $extension ) {

			$document = ywpi_get_order_document_by_type( $order_id, $document_type );

			if ( ( null == $document ) || ! $this->check_invoice_url_for_action( $document ) ) {
				return;
			}

			$this->show_file( $document->get_full_path( $extension, $order_id ), $extension, $order_id );
		}

		/**
		 * Show a file on browser or ask for download, according with related option
		 *
		 * @param YITH_Document|string $resource the document to show or the path of the file to be shown
		 */
		public function show_file( $resource, $extension = 'pdf', $order_id = null ) {

			$path = $resource;

			if ( $resource instanceof YITH_Document ) {

				$path = $resource->get_full_path( $extension, $order_id );
			}

			$content_type = apply_filters( 'ywpi_file_content_type','Content-type: application/pdf',$resource, $extension );

			if ( 'open' == ywpi_get_option( 'ywpi_pdf_invoice_behaviour' ) ) {
				header( $content_type );
				header( 'Content-Disposition: inline; filename = "' . basename( $path ) . '"' );
				header( 'Content-Transfer-Encoding: binary' );
				if ( file_exists($path)){
                    header( 'Content-Length: ' . filesize( $path ) );
                }
				header( 'Accept-Ranges: bytes' );
				@readfile( $path );
				exit();
			} else {
				header( $content_type );
				header( 'Content-Disposition: attachment; filename = "' . basename( $path ) . '"' );
				@readfile( $path );
				exit();
			}
		}

		/**
		 * Check if the current user can delete a document type for a specific order
		 *
		 * @param int    $order_id
		 * @param string $document_type
		 *
		 * @return bool
		 */
		public function user_can_delete_document( $order_id, $document_type ) {

			$enabled_capabilities = apply_filters( 'yith_ywpi_delete_document_capabilities',
				array( 'manage_woocommerce' ), $order_id, $document_type );

			if ( $enabled_capabilities ) {
				foreach ( $enabled_capabilities as $enabled_capability ) {
					if ( current_user_can( $enabled_capability ) ) {
						return true;
					}
				}
			}

			return false;
		}

		/**
		 * Cancel an order document
		 *
		 * @param int    $order_id      the order id
		 * @param string $document_type the type of document to reset
		 *
		 * @author Lorenzo Giuffrida
		 * @since  1.0.0
		 */
		public function reset_document( $order_id, $document_type, $extension ) {

			if ( $this->user_can_delete_document( $order_id, $document_type ) ) {

				$document = ywpi_get_order_document_by_type( $order_id, $document_type );

				if ( $this->check_invoice_url_for_action( $document ) ) {
					$document->reset();
					wp_delete_file($document->get_full_path());
				}

			}
		}


		/**
		 * Add a button to print invoice, if exists, from order page on frontend.
		 *
		 * @param array    $actions current actions
		 * @param WC_Order $order   the order
		 *
		 * @return array
		 */
		public function print_invoice_button( $actions, $order ) {
			$invoice = new YITH_Invoice( yit_get_prop( $order, 'id' ) );

			if ( $invoice->generated() ) {
				// Add the print button
				$actions['print-invoice'] = array(
					'url'  => $this->get_action_url( 'view', 'invoice', yit_get_prop( $order, 'id' ) ),
					'name' => esc_html__( 'Invoice', 'yith-woocommerce-pdf-invoice' ),
				);
			}

			return $actions;
		}

		/**
		 * replace the customer details using the plugin option pattern
		 *
		 * @param string $pattern
		 * @param int    $order_id
		 *
		 * @return string
		 *
		 * @author Lorenzo Giuffrida
		 * @since  1.0.0
		 */
		public function replace_customer_details_pattern( $pattern, $order_id ) {

			preg_match_all( "/{{([^}}]*)}}/", $pattern, $matches );

			$customer_details = $pattern;
			if ( isset( $matches[1] ) ) {
				foreach ( $matches[1] as $match ) {

                    $order_id = wc_get_order( $order_id )->get_parent_id() != 0 ? wc_get_order( $order_id )->get_parent_id() : $order_id;

                    $replace_value = yit_get_prop( wc_get_order( $order_id ), $match, true );

                    if ( empty($replace_value))
                        $replace_value = get_post_meta( $order_id , $match, true );

                    //  Convert country code and convert it to the country name
					if ( ( '_billing_country' == $match ) || ( '_shipping_country' == $match ) ) {
						$countries = WC()->countries->get_countries();
						if ( isset( $countries[ $replace_value ] ) ) {
							$replace_value = $countries[ $replace_value ];
						}
					}

                    $replace_value = apply_filters( 'yith_ywpi_replace_customer_details', $replace_value, $match, $order_id );

                    /*
                     * Integration with YITH WooCommerce EU VAT
                     */
					if( ('_yith_eu_vat') == $match ){
						$eu_vat_data = yit_get_prop( wc_get_order( $order_id ), '_ywev_order_vat_paid', true );
						$replace_value = (is_array($eu_vat_data) && array_key_exists( 'vat_number', $eu_vat_data )) ? $eu_vat_data["vat_number"] : '';
					}

                    /*
                     * Integration with YITH WooCommerce Checkout Manager
                     */
					if( defined('YWCCP') ){
                        $fields = ywccp_get_custom_fields( 'additional' );
                        foreach ( $fields as $key => $field ) {
                            if( $key == $match || '_'.$key == $match ){
                                $key = apply_filters('yith_ywpi_checkout_manager_additional_field_key',$key);
                                $replace_value = yit_get_prop( wc_get_order( $order_id ), $key, true );
                            }
                        }
                    }

					do_action('yith_ywpi_before_replace_customer_details');

					$customer_details = str_replace( "{{" . $match . "}}", $replace_value, $customer_details );
				}
			}

			// Clean up white space
			$replace_details = preg_replace( '/  +/', ' ', trim( $customer_details ) );

			$replace_details = preg_replace( '/\n\n+/', "\n", $replace_details );

			$replace_details = apply_filters( 'yith_pdf_invoice_customer_replace_details', $replace_details );

			//Remove blank lines
            //$replace_details = preg_replace("/(^[\r\n]*|[\r\n]+)[\s\t]*[\r\n]+/", "\n", $replace_details);


            // Break newlines apart and remove empty lines/trim commas and white space
			$replace_details = explode( "\n", $replace_details );

			// Add html breaks
			$replace_details = implode( '<br/>', apply_filters( 'yith_pdf_invoice_customer_details_pattern', $replace_details ) );

			return $replace_details;
		}

		/**
		 * Get the customer billing details
		 *
		 * @param int $order_id the order
		 *
		 * @return string
		 *
		 * @author Lorenzo Giuffrida
		 * @since  1.0.0
		 *
		 */
		public function get_customer_billing_details( $order_id ) {
			$customer_details = ywpi_get_option( 'ywpi_customer_billing_details', '' );

			return $this->replace_customer_details_pattern( $customer_details, $order_id );
		}

		/**
		 * Get the customer shipping details
		 *
		 * @param int $order_id
		 *
		 * @return string
		 *
		 * @author Lorenzo Giuffrida
		 * @since  1.0.0
		 *
		 */
		public function get_customer_shipping_details( $order_id ) {
			$customer_details = ywpi_get_option( 'ywpi_customer_shipping_details', '' );

			return $this->replace_customer_details_pattern( $customer_details, $order_id );
		}

        /**
         * Get the footer details
         */
        public function get_footer_details( $order_id , $document ) {

            if ( $document instanceof YITH_Invoice ) {
                $customer_details = ywpi_get_option( 'ywpi_invoice_footer', '' );
            }

            if ( $document instanceof YITH_Credit_Note ) {
                $customer_details = ywpi_get_option( 'ywpi_credit_note_footer', '' );
            }

            if ( $document instanceof YITH_Pro_Forma ) {
                $customer_details = ywpi_get_option( 'ywpi_pro_forma_footer', '' );
            }

            if ( $document instanceof YITH_Shipping ) {
                $customer_details = ywpi_get_option( 'ywpi_packing_slip_footer', '' );
            }

	        $customer_details = str_replace( '|', '-', $customer_details );

            return $this->replace_customer_details_pattern( $customer_details, $order_id );
        }


		/**
		 * Return the folder where documents have to be stored. Create the folder path if not exists.
		 *
		 * @param YITH_Document $document
		 *
		 * @return string
		 */
		private function create_storing_folder( $document, $extension = 'pdf' ) {

			/* Create folders for storing documents */
			$folder_path = get_option( 'ywpi_invoice_folder_format' );

            $date_to_show = ywpi_get_option( 'ywpi_date_to_show_in_invoice' );

            switch ( $date_to_show ){
                case 'new' :
                    $date = getdate( strtotime( $document->order->get_date_created() ) );
                    break;

                case 'completed' :
                    if (  $document->order->get_status() == 'completed' && !$document->order instanceof WC_Order_Refund )
                        $date = getdate( strtotime( $document->order->get_date_completed() ) );
                    else if ( ! $document instanceof YITH_Shipping  && ! $document instanceof YITH_Pro_Forma )
                        $date = getdate( strtotime( $document->date ) );
                    else
                        $date = getdate( strtotime( $document->order->get_date_created() ) );
                    break;

                case 'invoice_creation' :
                    if ( ! $document instanceof YITH_Shipping  && ! $document instanceof YITH_Pro_Forma )
                        $date = getdate( strtotime( $document->date ) );
                    else
                        $date = getdate( strtotime( $document->order->get_date_created() ) );
                    break;

                default:
                    $date = getdate( strtotime( $document->order->get_date_created() ) );
                    break;
            }


            $folder_path = str_replace(
				array(
					'[year]',
					'[month]',
					'[day]',
				),
				array(
					$date['year'],
					sprintf( "%02d", $date['mon'] ),
					sprintf( "%02d", $date['mday'] ),
				),
				$folder_path );

			$folder_path = apply_filters( 'ywpi_storing_folder', $folder_path, $document, $extension );

			if ( ! file_exists( YITH_YWPI_DOCUMENT_SAVE_DIR . $folder_path ) ) {
				wp_mkdir_p( YITH_YWPI_DOCUMENT_SAVE_DIR . $folder_path );
			}

			return $folder_path;
		}


		/**
		 * Retrieve a PDF or XML file for a specific document
		 *
		 * @param YITH_Document $document the document for which a PDF/XML file should be created
		 *
		 * @return int
		 * @author Alessio Torrisi
		 * @since  1.9.0
		 */
        public function create_file( $document, $extension = 'pdf' ) {

            /*  Some document type will cause the next available number to be incremented */
            $invoice_number = get_post_meta( $document->order->get_id(),'_ywpi_invoice_number',true);

            if( !$invoice_number  ){

                if ( ! $document instanceof YITH_Shipping  && ! $document instanceof YITH_Pro_Forma )
                    update_post_meta( $document->order->get_id(),'_ywpi_invoice_number', $document->number );


                if ( !$document->generated()) {

                    $this->increment_next_document_number($document);

                }
            }
            $content = $this->generate_template( $document, $extension );


            $document->save_folder = $this->create_storing_folder( $document, $extension );

            $document->save_path   = sprintf( "%s.%s", $this->get_document_filename( $document, $extension ), $extension );

            return file_put_contents( $document->get_full_path(), $content );
        }

		/**
		 * Return the filename associated to the document, based on plugin settings.
		 *
		 * @param YITH_Document $document
		 *
		 * @return mixed|string|void
		 */
		public function get_document_filename( $document, $extension = 'pdf' ) {

		    if( $extension == 'xml' ){

                if( $document->save_path_xml != '' ){
                    return basename($document->save_path_xml,'.xml');
                }else{
                    return YITH_Electronic_Invoice()->get_next_progressive_filename();
                }

            }

			$pattern = '';

			$is_receipt = get_post_meta( $document->order->get_id(), '_billing_invoice_type' , true );


			if ( ( $document instanceof YITH_Invoice && $is_receipt != "receipt" ) ||
			     ( $document instanceof YITH_Credit_Note )
			) {

			    if( $document instanceof YITH_Invoice && $extension == 'pdf' ){
                    $option_name = 'ywpi_invoice_filename_format';
                }elseif( $document instanceof YITH_Credit_Note ){
                    $option_name = 'ywpi_credit_note_filename_format';
                }

				// Filter to change filename format of invoice or credit note document. Use placeholder [number] to get automatically order of invoice or credit note
				$pattern     = apply_filters('ywpi_pattern_filename_invoice_or_credit_note', ywpi_get_option_with_placeholder( $option_name, '[number]' ), $document);

                $order_number = $document->order instanceof WC_Order ? $document->order->get_order_number() : '';

				$pattern = str_replace(
					array(
						'[number]',
						'[prefix]',
						'[suffix]',
						'[order_number]',
                        '[shop_ssn]'
					),
					array(
						$document->number,
						$document->prefix,
						$document->suffix,
                        $order_number,
                        get_option( 'ywpi_electronic_invoice_transmitter_id' )
					),
					$pattern );
			} else if ( $document instanceof YITH_Pro_Forma ) {
				// Filter to change filename format of proforma document. Use placeholder [order_number] to get order number
				$pattern = apply_filters('ywpi_pattern_filename_proforma',ywpi_get_option_with_placeholder( 'ywpi_pro_forma_invoice_filename_format', '[order_number]'),$document );

				$pattern = apply_filters('ywpi_filename_proforma', str_replace( '[order_number]', $document->order->get_order_number(), $pattern ), $pattern, $document );

			} else if ( $document instanceof YITH_Shipping ) {
				// Filter to change filename format of packing slip document. Use placeholder [order_number] to get order number
				$pattern = apply_filters('ywpi_pattern_filename_shipping',ywpi_get_option_with_placeholder( 'ywpi_packing_slip_filename_format', '[order_number]' ),$document);
				$pattern = apply_filters('ywpi_filename_packing_slip', str_replace( '[order_number]', $document->order->get_order_number(), $pattern ), $pattern, $document );

			} else if ( $document instanceof YITH_Invoice && $is_receipt == "receipt" ){

				$pattern = apply_filters('ywpi_filename_receipt', esc_html( 'receipt', 'yith-woocommerce-pdf-invoice') . '_' . $document->order->get_order_number(), $document );
			}


			$date_to_show = ywpi_get_option( 'ywpi_date_to_show_in_invoice' );

			switch ( $date_to_show ){
				case 'new' :
					$date = getdate( strtotime( $document->order->get_date_created() ) );
					break;

				case 'completed' :
					if (  $document->order->get_status() == 'completed' && !$document->order instanceof WC_Order_Refund )
						$date = getdate( strtotime( $document->order->get_date_completed() ) );
					else if ( ! $document instanceof YITH_Shipping  && ! $document instanceof YITH_Pro_Forma )
						$date = getdate( strtotime( $document->date ) );
					else
						$date = getdate( strtotime( $document->order->get_date_created() ) );
					break;

				case 'invoice_creation' :
					if ( ! $document instanceof YITH_Shipping  && ! $document instanceof YITH_Pro_Forma )
						$date = getdate( strtotime( $document->date ) );
					else
						$date = getdate( strtotime( $document->order->get_date_created() ) );
					break;

				default:
					$date = getdate( strtotime( $document->order->get_date_created() ) );
					break;
			}


			$pattern = str_replace(
				array(
					'[year]',
					'[month]',
					'[day]',
				),
				array(
					$date['year'],
					sprintf( "%02d", $date['mon'] ),
					sprintf( "%02d", $date['mday'] ),
				),
				$pattern );

			//  Sanitize the filename
			$pattern = preg_replace( '/[^a-z0-9-_.#\s]/i', '_', $pattern );

			return $pattern;
		}


		//  ------------------------------------------------------------------------------------------------------------------

		/**
		 * Set a maximum execution time
		 *
		 * @param int $seconds time in seconds
		 */
		private function set_time_limit( $seconds ) {
			$check_safe_mode = ini_get( 'safe_mode' );
			if ( ( ! $check_safe_mode ) || ( 'OFF' == strtoupper( $check_safe_mode ) ) ) {

				@set_time_limit( $seconds );
			}
		}

		private function generate_template_mpdf( $document ) {
			$this->set_time_limit( 120 );

            ob_start();
			wc_get_template( 'yith-pdf-invoice/invoice-template.php',
				array(
					'document'   => $document,
					'main_class' => apply_filters( 'yith_ywpi_add_body_class', '' ),
				),
				'',
				YITH_YWPI_TEMPLATE_DIR );
			$html = ob_get_clean();
			$html = apply_filters( 'yith_ywpi_before_pdf_rendering_html', $html, $document );

			ob_start();
			wc_get_template( 'yith-pdf-invoice/invoice-style.css',
				null,
				'',
				YITH_YWPI_TEMPLATE_DIR );
			$style = ob_get_clean();

			ob_start();
			wc_get_template( 'yith-pdf-invoice/document-footer.php',
				array(
					'document' => $document,
				),
				'',
				YITH_YWPI_TEMPLATE_DIR );
			$footer = ob_get_clean();
            require_once __DIR__ . '/vendor/autoload.php';

            $mpdf_args = apply_filters('yith_ywpdi_mpdf_args',array(
                'setAutoBottomMargin' => 'pad',
                "autoScriptToLang" => true,
                "autoLangToFont" => true,
            ));

            if( is_array($mpdf_args) ){
                $mpdf = new \Mpdf\Mpdf( $mpdf_args );
			}else{
                $mpdf = new \Mpdf\Mpdf();
			}

            $direction  = is_rtl() ? 'rtl' : 'ltr';

            $mpdf->directionality = apply_filters( 'yith_ywpdi_mpdf_directionality' , $direction );

            $mpdf->setFooter($footer, '');

			$mpdf->WriteHTML( $style, 1 );
			$mpdf->WriteHTML( $html, 2 );


            do_action('yith_ywpi_after_generate_template_pdf', $mpdf, $document);

            // The next call will store the entire PDF as a string in $pdf
			$pdf = $mpdf->Output( 'document', 'S' );

            return $pdf;
		}



		private function generate_template_xml( $document, $type = 'electronic-invoice-ita' ){

            ob_start();
            wc_get_template( 'yith-pdf-invoice/xml/'. $type .'/main.php',
                array( 'document' => $document, 'type' => $type),
                '',
                YITH_YWPI_TEMPLATE_DIR  );

            $content = ob_get_clean();

		    return $content;
        }


		/**
		 * Generate the template for a document
		 *
		 * @param YITH_Document $document the document to create
		 *
		 * @return string
		 * @author Lorenzo Giuffrida
		 * @since  1.0.0
		 */
		private function generate_template( $document, $extension = 'pdf' ) {

			do_action('yith_ywpdi_before_generate_template');

			$file_content = $extension == 'xml' ? $this->generate_template_xml( $document ) : $this->generate_template_mpdf( $document );

			return $file_content;
		}

        /**
        * Action links
        *
        *
        * @return void
        * @since    1.8.5
        * @author   Daniel Sanchez <daniel.sanchez@yithemes.com>
        */
        public function action_links( $links ) {

            $links = yith_add_action_links( $links, $this->_panel_page, false );
            return $links;

        }

        /**
         * Plugin Row Meta
         *
         *
         * @return void
         * @since    1.8.5
         * @author   Daniel Sanchez <daniel.sanchez@yithemes.com>
         */
        public function plugin_row_meta( $new_row_meta_args, $plugin_meta, $plugin_file, $plugin_data, $status, $init_file = 'YITH_YWPI_FREE_INIT' ) {

            if ( defined( $init_file ) && constant( $init_file ) == $plugin_file ) {
                $new_row_meta_args['slug'] = YITH_YWPI_SLUG;
            }

            return $new_row_meta_args;
        }


	}
}
