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

if ( ! class_exists( 'WooCommerce_PDF_IPS_Templates_Third_Party_Compatibility' ) ) {

	class WooCommerce_PDF_IPS_Templates_Third_Party_Compatibility {
		public function __construct() {
			add_filter( 'wpo_wcpdf_item_tax_rate_base', array( $this, 'germanized_split_shipping_taxes_tax_base' ), 10, 4 );
			add_action( 'wpo_wcpdf_before_html', array( $this, 'woodmart_lazy_loading' ), 10, 2 );
			add_action( 'wpo_wcpdf_after_html', array( $this, 'woodmart_lazy_loading' ), 10, 2 );
			add_filter( 'wpo_wcpdf_order_items_data', array( $this, 'restore_product_bundle_grouping' ), 999, 3 );
		}

		/**
		 * WooCommerce Germanized allows calculating multiple tax rates for shipping,
		 * splitting the vat base (taxable amount) accross the different rates
		 * to make our vat base/subtotal rows match this, we use their custom meta to
		 * get the taxable amount
		 * 
		 * @param float          $base_amount the vat base as normally calculated
		 * @param \WC_Order_item $item        the order item
		 * @param object         $tax         Standard object holding the tax data
		 * @param \WC_Order      $order       the WooCommerce order.
		 * @return float
		 */
		public function germanized_split_shipping_taxes_tax_base( $base_amount, $item, $tax, $order ) {
			if ( ! function_exists( 'WC_germanized' ) ) {
				return $base_amount;
			}
			if ( is_a( $item, 'WC_Order_Item_Shipping') && $split_taxes = $item->get_meta( '_split_taxes' ) ) {
				if ( is_array( $split_taxes ) ) {
					foreach ($split_taxes as $tax_class => $split_tax ) {
						if ( ! empty( $split_tax['net_amount'] ) && ! empty( $split_tax['tax_rates'] ) && in_array( $tax->rate_id, $split_tax['tax_rates'] ) ) {
							return $split_tax['net_amount'];
						}
					}
				}
			}
			return $base_amount;
		}

		/**
		 * Enables/disables the Woodmart theme lazy loading
		 * 
		 * @param string $document_type document type
		 * @param object $document      document object
		 * 
		 * @return void
		 */
		public function woodmart_lazy_loading( $document_type, $document ) {
			$current_action = current_action();
			if ( $current_action == 'wpo_wcpdf_before_html' && function_exists( 'woodmart_lazy_loading_deinit' ) ) {
				woodmart_lazy_loading_deinit( true );
			} elseif ( $current_action == 'wpo_wcpdf_after_html' && function_exists( 'woodmart_lazy_loading_init' ) ) {
				woodmart_lazy_loading_init( true );
			}
		}

		/**
		 * When WooCommerce Product Bundles is activated, keep bundles
		 * together if a sorting option is selected within the customizer.
		 *
		 * @param array  $items         The document items
		 * @param object $order         WC_Order
		 * @param array  $document_type The document type
		 *
		 * @return array The order items filtered
		 */
		public function restore_product_bundle_grouping( $items, $order, $document_type ) {
			if ( function_exists( 'wc_pb_get_bundled_order_items' ) && function_exists( 'wc_pb_get_bundled_order_item_container' ) ) {
				// insert bundled items under their parent
				$reordered_items = array();
				foreach ( $items as $item_id => $item ) {
					// skip items that we have already moved
					if ( isset( $reordered_items[$item_id] ) ) {
						continue;
					}
					// check if item is a bundle
					if ( $bundled_item_ids = wc_pb_get_bundled_order_items( $item['item'], $order, true ) ) {
						// add bundle container
						$reordered_items[$item_id] = $item;
						// add bundled items below parent
						$reordered_items = $reordered_items + array_intersect_key( $items, array_flip( $bundled_item_ids ) );
					} elseif ( false === wc_pb_get_bundled_order_item_container( $item['item'], $order ) ) { // regular item
						$reordered_items[$item_id] = $item;
					}
				}
				
				return $reordered_items;
			}
			return $items;
		}

	} // end class

} // end class_exists

return new WooCommerce_PDF_IPS_Templates_Third_Party_Compatibility();