<?php
/**
 * EAN for WooCommerce - Compatibility Class
 *
 * @version 4.7.7
 * @since   2.2.0
 *
 * @author  Algoritmika Ltd
 */

defined( 'ABSPATH' ) || exit;

if ( ! class_exists( 'Alg_WC_EAN_Compatibility' ) ) :

class Alg_WC_EAN_Compatibility {

	/**
	 * Constructor.
	 *
	 * @version 4.7.7
	 * @since   2.2.0
	 *
	 * @todo    (dev) MultiVendorX: generate button
	 * @todo    (dev) MultiVendorX: customizable template
	 * @todo    (dev) MultiVendorX: barcodes?
	 * @todo    (dev) "Point of Sale for WooCommerce": add `( 'yes' === get_option( 'alg_wc_ean_wc_pos', 'yes' ) )` / "This will add EAN field to the "Register > Scanning Fields" option of the %s plugin." / Point of Sale for WooCommerce / https://woocommerce.com/products/point-of-sale-for-woocommerce/
	 * @todo    (feature) WCFM: customizable position, i.e., instead of right below the "SKU" field in "Inventory" tab
	 * @todo    (feature) Dokan: customizable position, i.e., instead of `dokan_new_product_after_product_tags` and `dokan_product_edit_after_product_tags`
	 * @todo    (feature) https://wordpress.org/plugins/woocommerce-xml-csv-product-import/ (WooCommerce add-on for "WP All Import")
	 */
	function __construct() {

		// Google Listings & Ads
		if ( 'yes' === get_option( 'alg_wc_ean_gla', 'no' ) ) {
			add_filter( 'woocommerce_gla_attribute_mapping_sources_custom_attributes', array( $this, 'gla_add_ean' ), PHP_INT_MAX );
		}

		// MultiVendorX
		if ( 'yes' === get_option( 'alg_wc_ean_mvx', 'no' ) ) {
			add_action( 'mvx_process_product_object',                                 array( $this, 'mvx_save_ean_field' ), 10, 2 );
			add_action( 'mvx_frontend_dashboard_after_product_excerpt_metabox_panel', array( $this, 'mvx_add_ean_field' ) );
		}

		// "Point of Sale for WooCommerce" plugin
		add_filter( 'wc_pos_scanning_fields', array( $this, 'wc_pos_scanning_fields' ), PHP_INT_MAX );
		if ( 'yes' === get_option( 'alg_wc_ean_wc_pos_search', 'no' ) ) {
			add_filter( 'woocommerce_rest_prepare_product_object', array( $this, 'wc_pos_add_ean_to_product_name' ), PHP_INT_MAX, 3 );
		}

		// "Woocommerce OpenPos" plugin
		add_filter( 'op_barcode_key_setting', array( $this, 'op_barcode_key_setting' ), PHP_INT_MAX );

		// "Dokan – Best WooCommerce Multivendor Marketplace Solution – Build Your Own Amazon, eBay, Etsy" plugin
		if ( 'yes' === get_option( 'alg_wc_ean_dokan', 'no' ) ) {
			add_action( 'dokan_new_product_after_product_tags',  array( $this, 'dokan_add_ean_field' ) );
			add_action( 'dokan_product_edit_after_product_tags', array( $this, 'dokan_add_ean_field' ), 10, 2 );
			add_action( 'dokan_new_product_added',               array( $this, 'dokan_save_ean_field' ), 10, 2 );
			add_action( 'dokan_product_updated',                 array( $this, 'dokan_save_ean_field' ), 10, 2 );
			add_action( 'dokan_product_after_variation_pricing', array( $this, 'dokan_add_ean_field_variation' ), 10, 3 );
		}

		// WCFM
		if ( 'yes' === get_option( 'alg_wc_ean_wcfm', 'no' ) ) {
			add_filter( 'wcfm_product_fields_stock',            array( $this, 'wcfm_add_ean_field' ), 10, 3 );
			add_action( 'after_wcfm_products_manage_meta_save', array( $this, 'wcfm_save_ean_field' ), 10, 2 );

			// Variations
			add_filter( 'wcfm_variation_edit_data',               array( $this, 'wcfm_variation_edit_data' ), 10, 3 );
			add_filter( 'wcfm_product_manage_fields_variations',  array( $this, 'wcfm_variation_add_ean_field' ) );
			add_action( 'after_wcfm_product_variation_meta_save', array( $this, 'wcfm_variation_save_ean_field' ), 10, 3 );
		}

		// "Print Invoice & Delivery Notes for WooCommerce" plugin
		if ( 'yes' === get_option( 'alg_wc_ean_wcdn', 'no' ) ) {
			add_action( 'wcdn_order_item_after', array( $this, 'add_to_wcdn_ean' ), 10, 3 );
		}

		// "WooCommerce PDF Invoices & Packing Slips" plugin
		if ( 'yes' === get_option( 'alg_wc_ean_wpo_wcpdf', 'no' ) ) {
			add_action( get_option( 'alg_wc_ean_wpo_wcpdf_position', 'wpo_wcpdf_after_item_meta' ), array( $this, 'add_to_wpo_wcpdf_ean' ), 10, 3 );
		}

		// "WooCommerce PDF Invoices, Packing Slips, Delivery Notes and Shipping Labels" plugin
		if ( 'yes' === get_option( 'alg_wc_ean_wt_pklist', 'no' ) ) {
			// Options
			$this->wt_pklist_options = array_replace(
				array(
					'content'      => '<p>EAN: [alg_wc_ean]</p>',
					'position'     => 'after_product_meta',
					'documents'    => '',
					'column_title' => __( 'EAN', 'ean-for-woocommerce' ),
					'column_class' => 'wfte_product_table_head_ean wfte_text_center',
					'column_style' => '',
				),
				get_option( 'alg_wc_ean_wt_pklist_options', array() )
			);
			// Hooks
			switch ( $this->wt_pklist_options['position'] ) {
				case 'column':
					add_filter( 'wf_pklist_package_product_table_additional_column_val', array( $this, 'add_to_wt_pklist_column_ean' ), 10, 6 );
					add_filter( 'wf_pklist_product_table_additional_column_val',         array( $this, 'add_to_wt_pklist_column_ean' ), 10, 6 );
					add_filter( 'wf_pklist_alter_product_table_head',                    array( $this, 'add_to_wt_pklist_column_head_ean' ), 10, 3 );
					break;
				case 'before_product_meta':
				case 'after_product_meta':
					add_filter( 'wf_pklist_add_product_meta',                            array( $this, 'add_to_wt_pklist_ean' ), 10, 5 );
					add_filter( 'wf_pklist_add_package_product_meta',                    array( $this, 'add_to_wt_pklist_ean' ), 10, 5 );
					break;
				default: // 'after_product_name', 'before_product_name'
					add_filter( 'wf_pklist_alter_product_name',                          array( $this, 'add_to_wt_pklist_ean' ), 10, 5 );
					add_filter( 'wf_pklist_alter_package_product_name',                  array( $this, 'add_to_wt_pklist_ean' ), 10, 5 );
			}
		}

		// "WooCommerce Google Product Feed"
		add_filter( 'woocommerce_gpf_custom_field_list', array( $this, 'add_to_woocommerce_gpf_custom_field_list' ), PHP_INT_MAX );

		// "WooCommerce Customer / Order / Coupon Export"
		if ( 'yes' === get_option( 'alg_wc_ean_wc_customer_order_export', 'no' ) ) {
			add_filter( 'wc_customer_order_export_format_data_sources',            array( $this, 'wc_customer_order_export_add_column' ), 10, 3 );
			add_filter( 'wc_customer_order_export_csv_order_row_one_row_per_item', array( $this, 'wc_customer_order_export_render_column' ), 10, 4 );
		}

	}

	/**
	 * gla_add_ean.
	 *
	 * @version 4.7.7
	 * @since   4.7.5
	 */
	function gla_add_ean( $values ) {
		$values[] = alg_wc_ean()->core->ean_key;
		return $values;
	}

	/**
	 * mvx_save_ean_field.
	 *
	 * @version 4.7.3
	 * @since   4.7.3
	 */
	function mvx_save_ean_field( $product, $_post ) {
		if ( isset( $_post['alg_wc_ean_mvx'] ) ) {
			$product->update_meta_data( alg_wc_ean()->core->ean_key, wc_clean( $_post['alg_wc_ean_mvx'] ) );
		}
	}

	/**
	 * mvx_add_ean_field.
	 *
	 * @version 4.7.3
	 * @since   4.7.3
	 */
	function mvx_add_ean_field( $post_id ) {
		$title       = get_option( 'alg_wc_ean_mvx_title', __( 'EAN:', 'ean-for-woocommerce' ) );
		$placeholder = get_option( 'alg_wc_ean_mvx_placeholder', '' );
		$value       = alg_wc_ean()->core->get_ean( $post_id );
		?>
		<div class="add-product-info-holder row-padding">
			<label for="alg_wc_ean_mvx"><?php echo esc_html( $title ); ?></label>
			<input id="alg_wc_ean_mvx" name="alg_wc_ean_mvx" class="form-control inline-input" value="<?php echo esc_attr( $value ); ?>" placeholder="<?php echo esc_attr( $placeholder ); ?>">
		</div>
		<?php
	}

	/**
	 * op_barcode_key_setting.
	 *
	 * @version 4.2.0
	 * @since   4.2.0
	 *
	 * @todo    (desc) add to "WooCommerce > Settings > EAN > Compatibility"?
	 */
	function op_barcode_key_setting( $keys ) {
		$keys[ alg_wc_ean()->core->ean_key ] = get_option( 'alg_wc_ean_title', esc_html__( 'EAN', 'ean-for-woocommerce' ) );
		return $keys;
	}

	/**
	 * wc_customer_order_export_add_column.
	 *
	 * @version 3.8.0
	 * @since   3.8.0
	 *
	 * @todo    (dev) `item_ean` to `item_alg_wc_ean`?
	 * @todo    (dev) XML (at least in `OrderLineItems`)?
	 */
	function wc_customer_order_export_add_column( $data_sources, $export_type, $output_type ) {
		if ( 'orders' === $export_type && 'csv' === $output_type ) {
			$data_sources[] = 'item_ean';
		}
		return $data_sources;
	}

	/**
	 * wc_customer_order_export_render_column.
	 *
	 * @version 3.8.0
	 * @since   3.8.0
	 */
	function wc_customer_order_export_render_column( $data, $item, $order, $generator ) {
		$data['item_ean'] = ( ! empty( $item['id'] ) && ( $_item = new WC_Order_Item_Product( $item['id'] ) ) ? alg_wc_ean()->core->get_ean_from_order_item( $_item ) : '' );
		return $data;
	}

	/**
	 * wt_pklist_check_template_type.
	 *
	 * @version 3.5.1
	 * @since   3.5.1
	 */
	function wt_pklist_check_template_type( $template_type ) {
		if ( ! empty( $this->wt_pklist_options['documents'] ) ) {
			if ( ! is_array( $this->wt_pklist_options['documents'] ) ) {
				$this->wt_pklist_options['documents'] = array_map( 'trim', explode( ',', $this->wt_pklist_options['documents'] ) );
			}
			return ( in_array( $template_type, $this->wt_pklist_options['documents'] ) );
		}
		return true;
	}

	/**
	 * add_to_wt_pklist_column_head_ean.
	 *
	 * @version 3.5.1
	 * @since   3.5.1
	 */
	function add_to_wt_pklist_column_head_ean( $columns, $template_type, $order ) {
		if ( $this->wt_pklist_check_template_type( $template_type ) ) {
			$columns['ean'] = '<th' .
					' class="' . $this->wt_pklist_options['column_class'] . '"' .
					' style="' . $this->wt_pklist_options['column_style'] . '"' .
					' col-type="' . sanitize_key( $this->wt_pklist_options['column_title'] ) . '"' .
				'>' . $this->wt_pklist_options['column_title'] . '</th>';
		}
		return $columns;
	}

	/**
	 * add_to_wt_pklist_column_ean.
	 *
	 * @version 3.5.1
	 * @since   3.5.1
	 */
	function add_to_wt_pklist_column_ean( $value, $template_type, $column_key, $product, $order_item, $order ) {
		if ( 'ean' === $column_key ) {
			$value = $this->add_to_wt_pklist_ean( $value, $template_type, $product, $order_item, $order );
		}
		return $value;
	}

	/**
	 * add_to_wt_pklist_ean.
	 *
	 * @version 3.5.1
	 * @since   3.5.0
	 *
	 * @see     https://wordpress.org/plugins/print-invoices-packing-slip-labels-for-woocommerce/
	 */
	function add_to_wt_pklist_ean( $value, $template_type, $product, $order_item, $order ) {
		if ( $this->wt_pklist_check_template_type( $template_type ) ) {
			$result = alg_wc_ean()->core->shortcodes->do_shortcode( $this->wt_pklist_options['content'], array( 'product_id' => $product->get_id() ) );
			$value  = ( in_array( $this->wt_pklist_options['position'], array( 'after_product_meta', 'after_product_name' ) ) ? $value . $result : $result . $value );
		}
		return $value;
	}

	/**
	 * add_to_woocommerce_gpf_custom_field_list.
	 *
	 * @version 3.0.0
	 * @since   3.0.0
	 *
	 * @todo    (dev) make this optional?
	 */
	function add_to_woocommerce_gpf_custom_field_list( $fields ) {
		$fields[ 'meta:' . alg_wc_ean()->core->ean_key ] = __( 'EAN', 'ean-for-woocommerce' );
		return $fields;
	}

	/**
	 * add_to_wcdn_ean.
	 *
	 * @version 2.6.0
	 * @since   1.4.0
	 *
	 * @todo    (feature) customizable wrapper
	 * @todo    (dev) check if valid?
	 */
	function add_to_wcdn_ean( $product, $order, $item ) {
		if ( false !== ( $ean = alg_wc_ean()->core->get_ean_from_order_item( $item ) ) ) {
			echo '<small class="ean_wrapper">' . esc_html( get_option( 'alg_wc_ean_title', __( 'EAN', 'ean-for-woocommerce' ) ) ) . ' ' .
					'<span class="ean">' . $ean . '</span>' .
				'</small>';
		}
	}

	/**
	 * add_to_wpo_wcpdf_ean.
	 *
	 * @version 4.2.0
	 * @since   2.6.0
	 *
	 * @todo    (dev) check if valid?
	 */
	function add_to_wpo_wcpdf_ean( $type, $item, $order ) {
		if ( ! empty( $item['item_id'] ) && ( $item = new WC_Order_Item_Product( $item['item_id'] ) ) && false !== ( $ean = alg_wc_ean()->core->get_ean_from_order_item( $item ) ) ) {
			$options  = get_option( 'alg_wc_ean_wpo_wcpdf_options', array() );
			$template = ( isset( $options['content'] ) ? $options['content'] :
				'<dl class="meta">' .
					'<dt class="ean">' . esc_html( get_option( 'alg_wc_ean_title', __( 'EAN', 'ean-for-woocommerce' ) ) ) . ':' . '</dt>' .
					'<dd class="ean">' . '%ean%' . '</dd>' .
				'</dl>' );
			echo str_replace( '%ean%', $ean, $template );
		}
	}

	/**
	 * wcfm_save_ean_field.
	 *
	 * @version 4.5.0
	 * @since   2.2.2
	 *
	 * @see     https://plugins.svn.wordpress.org/wc-frontend-manager/tags/6.5.10/controllers/products-manager/wcfm-controller-products-manage.php
	 */
	function wcfm_save_ean_field( $new_product_id, $wcfm_products_manage_form_data ) {
		$id = 'wcfm_' . alg_wc_ean()->core->ean_key;
		if ( isset( $wcfm_products_manage_form_data[ $id ] ) ) {
			alg_wc_ean()->core->set_ean( $new_product_id, wc_clean( $wcfm_products_manage_form_data[ $id ] ) );
		}
	}

	/**
	 * wcfm_add_ean_field.
	 *
	 * @version 4.0.0
	 * @since   2.2.2
	 *
	 * @see     https://plugins.svn.wordpress.org/wc-frontend-manager/tags/6.5.10/views/products-manager/wcfm-view-products-manage-tabs.php
	 *
	 * @todo    (dev) `generate_button`: move `add_action` (3x) to constructor?
	 * @todo    (dev) do we need `esc_html` everywhere, e.g., in `hints`? (same for `dokan_add_ean_field()`)
	 * @todo    (feature) optional EAN validation
	 */
	function wcfm_add_ean_field( $fields, $product_id, $product_type ) {
		$_key = 'wcfm_' . alg_wc_ean()->core->ean_key;

		// "Generate" button
		$do_add_generate_button = ( 'yes' === get_option( 'alg_wc_ean_wcfm_add_generate_button', 'no' ) && $product_id );
		if ( $do_add_generate_button ) {
			add_action( 'wp_footer', array( 'Alg_WC_EAN_Edit', 'generate_button_js' ) );
			add_action( 'wp_ajax_alg_wc_ean_generate_ajax', array( 'Alg_WC_EAN_Edit', 'generate_button_ajax' ) );
			add_action( 'wp_footer', array( $this, 'wcfm_generate_button_css' ) );
		}

		// Field data
		$_field = array(
			'label'       => esc_html( get_option( 'alg_wc_ean_wcfm_title', __( 'EAN', 'ean-for-woocommerce' ) ) ),
			'desc'        => ( $do_add_generate_button ? '<p class="alg_wc_ean_generate_button_wrapper">' . Alg_WC_EAN_Edit::get_generate_button( $product_id, $_key ) . '</p>' : '' ),
			'type'        => 'text',
			'class'       => 'wcfm-text',
			'label_class' => 'wcfm_title',
			'value'       => alg_wc_ean()->core->get_ean( $product_id ),
			'hints'       => esc_html( get_option( 'alg_wc_ean_wcfm_hints', __( 'The International Article Number (also known as European Article Number or EAN) is a standard describing a barcode symbology and numbering system used in global trade to identify a specific retail product type, in a specific packaging configuration, from a specific manufacturer.', 'ean-for-woocommerce' ) ) ),
			'placeholder' => esc_html( get_option( 'alg_wc_ean_wcfm_placeholder', __( 'Product EAN...', 'ean-for-woocommerce' ) ) ),
		);

		// Add field
		$_fields  = array();
		$is_added = false;
		foreach ( $fields as $key => $field ) {
			$_fields[ $key ] = $field;
			if ( 'sku' === $key ) {
				$_fields[ $_key ] = $_field;
				$is_added = true;
			}
		}
		if ( ! $is_added ) {
			$_fields[ $_key ] = $_field; // fallback
		}

		return $_fields;
	}

	/**
	 * wcfm_generate_button_css.
	 *
	 * @version 4.0.0
	 * @since   4.0.0
	 *
	 * @todo    (dev) use `admin_enqueue_scripts`?
	 */
	function wcfm_generate_button_css() {
		?><style>
			.alg_wc_ean_generate_button_wrapper {
				text-align: right;
			}
		</style><?php
	}

	/**
	 * wcfm_variation_save_ean_field.
	 *
	 * @version 4.5.0
	 * @since   4.0.0
	 *
	 * @todo    (dev) merge with `wcfm_save_ean_field()`?
	 */
	function wcfm_variation_save_ean_field( $product_id, $variation_id, $data ) {
		$id = 'wcfm_' . alg_wc_ean()->core->ean_key;
		if ( isset( $data[ $id ] ) ) {
			alg_wc_ean()->core->set_ean( $variation_id, wc_clean( $data[ $id ] ) );
		}
	}

	/**
	 * wcfm_variation_add_ean_field.
	 *
	 * @version 4.0.0
	 * @since   4.0.0
	 *
	 * @todo    (dev) placeholder: parent product's EAN?
	 * @todo    (dev) `wcfm_half_ele`?
	 * @todo    (dev) `generate_button`: move `add_action` to constructor?
	 * @todo    (dev) merge with `wcfm_add_ean_field()`?
	 */
	function wcfm_variation_add_ean_field( $fields ) {

		// "Generate" button
		if ( 'yes' === get_option( 'alg_wc_ean_wcfm_add_generate_button', 'no' ) ) {
			add_action( 'wp_footer', array( $this, 'wcfm_variation_get_generate_button_js' ) );
		}

		// Field data
		$_field = array(
			'label'       => esc_html( get_option( 'alg_wc_ean_wcfm_title', __( 'EAN', 'ean-for-woocommerce' ) ) ),
			'type'        => 'text',
			'class'       => 'wcfm-text wcfm_ele wcfm_half_ele variable variable-subscription pw-gift-card',
			'label_class' => 'wcfm_title wcfm_half_ele_title',
			'hints'       => esc_html( get_option( 'alg_wc_ean_wcfm_hints', __( 'The International Article Number (also known as European Article Number or EAN) is a standard describing a barcode symbology and numbering system used in global trade to identify a specific retail product type, in a specific packaging configuration, from a specific manufacturer.', 'ean-for-woocommerce' ) ) ),
			'placeholder' => esc_html( get_option( 'alg_wc_ean_wcfm_placeholder', __( 'Product EAN...', 'ean-for-woocommerce' ) ) ),
		);

		// Add field
		$_fields  = array();
		$_key     = 'wcfm_' . alg_wc_ean()->core->ean_key;
		$is_added = false;
		foreach ( $fields as $key => $field ) {
			$_fields[ $key ] = $field;
			if ( 'sku' === $key ) {
				$_fields[ $_key ] = $_field;
				$is_added = true;
			}
		}
		if ( ! $is_added ) {
			$_fields[ $_key ] = $_field; // fallback
		}

		return $_fields;

	}

	/**
	 * wcfm_variation_edit_data.
	 *
	 * @version 4.0.0
	 * @since   4.0.0
	 */
	function wcfm_variation_edit_data( $variations, $variation_id, $variation_id_key ) {
		if ( $variation_id ) {
			$variations[ $variation_id_key ][ 'wcfm_' . alg_wc_ean()->core->ean_key ] = alg_wc_ean()->core->get_ean( $variation_id );
		}
		return $variations;
	}

	/**
	 * wcfm_variation_get_generate_button_js.
	 *
	 * @version 4.0.0
	 * @since   4.0.0
	 *
	 * @todo    (dev) merge with `Alg_WC_EAN_Edit::get_generate_button()`?
	 */
	function wcfm_variation_get_generate_button_js() {
		$button_label = sprintf( esc_html__( 'Generate %s', 'ean-for-woocommerce' ), get_option( 'alg_wc_ean_title', esc_html__( 'EAN', 'ean-for-woocommerce' ) ) );
		?><script>
			jQuery( document ).ready( function () {
				jQuery( '.variation_id' ).each( function () {
					var variation_id = jQuery( this ).val();
					var input_id     = jQuery( this ).attr( 'id' ).replace( 'variations_id_', 'variations_wcfm_' + '<?php echo alg_wc_ean()->core->ean_key; ?>' + '_' );
					jQuery( '#' + input_id ).after( '<p class="alg_wc_ean_generate_button_wrapper">' +
							'<button' +
								' type="button"' +
								' class="button alg_wc_ean_generate_ajax wcfm_ele variable variable-subscription pw-gift-card"' +
								' data-product="' + variation_id + '"' +
								' data-input="' + input_id + '"' +
							'>' +
								'<?php echo $button_label; ?>' +
							'</button>' +
						'</p>'
					);
				} );
			} );
		</script><?php
	}

	/**
	 * dokan_add_ean_field_variation.
	 *
	 * @version 4.4.6
	 * @since   3.1.2
	 */
	function dokan_add_ean_field_variation( $loop, $variation_data, $variation ) {

		$key           = alg_wc_ean()->core->ean_key;
		$id            = "variable{$key}_{$loop}";
		$name          = "variable{$key}[{$loop}]";
		$value         = alg_wc_ean()->core->get_ean( $variation->ID );
		$title         = esc_html( get_option( 'alg_wc_ean_dokan_title', __( 'EAN', 'ean-for-woocommerce' ) ) );
		$placeholder   = alg_wc_ean()->core->get_ean( $variation->post_parent );
		$required      = ( 'yes' === get_option( 'alg_wc_ean_dokan_required', 'no' ) ? ' required' : '' );
		$required_html = ( 'yes' === get_option( 'alg_wc_ean_dokan_required', 'no' ) ? get_option( 'alg_wc_ean_dokan_required_html', '' ) : '' );
		$desc          = ( '' !== get_option( 'alg_wc_ean_dokan_desc', '' ) ? alg_wc_ean()->core->shortcodes->do_shortcode( get_option( 'alg_wc_ean_dokan_desc', '' ), array( 'ean' => $value, 'product_id' => $variation->ID ) ) : '' );

		echo '<div class="dokan-form-group">' .
			'<label for="' . $id . '" class="form-label">' . $title . $required_html . '</label>' .
			'<input type="text" name="' . $name . '" id="' . $id . '" class="dokan-form-control alg-wc-ean" placeholder="' . $placeholder . '" value="' . $value . '"' . $required . '>' .
			$desc .
		'</div>';

	}

	/**
	 * dokan_save_ean_field.
	 *
	 * @version 4.5.0
	 * @since   2.2.2
	 *
	 * @see     https://github.com/weDevsOfficial/dokan/blob/v3.2.8/includes/Dashboard/Templates/Products.php#L353
	 * @see     https://github.com/weDevsOfficial/dokan/blob/v3.2.8/includes/Dashboard/Templates/Products.php#L482
	 * @see     https://github.com/weDevsOfficial/dokan/blob/v3.2.8/includes/Product/functions.php#L127
	 * @see     https://github.com/weDevsOfficial/dokan/blob/v3.2.8/includes/Product/functions.php#L129
	 * @see     https://github.com/weDevsOfficial/dokan/blob/v3.2.8/includes/REST/Manager.php#L172
	 *
	 * @todo    (dev) `alg_wc_ean_dokan_required`: add server-side validation
	 */
	function dokan_save_ean_field( $product_id, $data ) {
		$id = 'dokan_' . alg_wc_ean()->core->ean_key;
		if ( isset( $data[ $id ] ) ) {
			alg_wc_ean()->core->set_ean( $product_id, wc_clean( $data[ $id ] ) );
		}
	}

	/**
	 * dokan_add_ean_field.
	 *
	 * @version 4.4.6
	 * @since   2.2.2
	 *
	 * @see     https://github.com/weDevsOfficial/dokan/blob/v3.2.8/templates/products/new-product.php#L257
	 * @see     https://github.com/weDevsOfficial/dokan/blob/v3.2.8/templates/products/tmpl-add-product-popup.php#L148
	 * @see     https://github.com/weDevsOfficial/dokan/blob/v3.2.8/templates/products/new-product-single.php#L338
	 *
	 * @todo    (feature) JS EAN validation?
	 */
	function dokan_add_ean_field( $post = false, $post_id = false ) {

		$id            = 'dokan_' . alg_wc_ean()->core->ean_key;
		$value         = ( ! empty( $post_id ) ? alg_wc_ean()->core->get_ean( $post_id ) : ( isset( $_REQUEST[ $id ] ) ? esc_html( wc_clean( $_REQUEST[ $id ] ) ) : '' ) ); // Edit product vs Add product
		$title         = esc_html( get_option( 'alg_wc_ean_dokan_title', __( 'EAN', 'ean-for-woocommerce' ) ) );
		$placeholder   = esc_html( get_option( 'alg_wc_ean_dokan_placeholder', __( 'Product EAN...', 'ean-for-woocommerce' ) ) );
		$required      = ( 'yes' === get_option( 'alg_wc_ean_dokan_required', 'no' ) ? ' required' : '' );
		$required_html = ( 'yes' === get_option( 'alg_wc_ean_dokan_required', 'no' ) ? get_option( 'alg_wc_ean_dokan_required_html', '' ) : '' );
		$desc          = ( '' !== get_option( 'alg_wc_ean_dokan_desc', '' ) ? alg_wc_ean()->core->shortcodes->do_shortcode( get_option( 'alg_wc_ean_dokan_desc', '' ), array( 'ean' => $value, 'product_id' => $post_id ) ) : '' );

		echo '<div class="dokan-form-group">' .
			'<label for="' . $id . '" class="form-label">' . $title . $required_html . '</label>' .
			'<input type="text" name="' . $id . '" id="' . $id . '" class="dokan-form-control alg-wc-ean" placeholder="' . $placeholder . '" value="' . $value . '"' . $required . '>' .
			$desc .
		'</div>';

	}

	/**
	 * wc_pos_scanning_fields.
	 *
	 * Adds "EAN" field to the "Scanning Fields" option in "Point of Sale > Settings > Register".
	 *
	 * @version 2.2.0
	 * @since   2.2.0
	 *
	 * @see     https://woocommerce.com/products/point-of-sale-for-woocommerce/
	 */
	function wc_pos_scanning_fields( $fields ) {
		$fields[ alg_wc_ean()->core->ean_key ] = __( 'EAN', 'ean-for-woocommerce' );
		return $fields;
	}

	/**
	 * wc_pos_add_ean_to_product_name.
	 *
	 * @version 3.8.0
	 * @since   3.8.0
	 *
	 * @see     https://woocommerce.com/products/point-of-sale-for-woocommerce/
	 *
	 * @todo    (dev) `get_route()`: better solution, e.g., exact match with `/wc-pos/products`?
	 * @todo    (dev) find better solution, e.g., add elsewhere, not to the name?
	 */
	function wc_pos_add_ean_to_product_name( $response, $product, $request ) {
		if ( ( false !== strpos( $request->get_route(), '/wc-pos/' ) ) && '' !== ( $ean = alg_wc_ean()->core->get_ean( $product->get_id() ) ) ) {
			$response->data['name'] .= ' (' . sprintf( __( 'EAN: %s', 'ean-for-woocommerce' ), $ean ) . ')';
		}
		return $response;
	}

}

endif;

return new Alg_WC_EAN_Compatibility();