<?php

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/**

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* REST API Coupons Controller

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*

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* Handles requests to /coupons/*

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*/

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namespace Automattic\WooCommerce\Admin\API;

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defined( 'ABSPATH' ) || exit;

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/**

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* Coupons controller.

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*

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* @internal

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* @extends WC_REST_Coupons_Controller

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*/

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class Coupons extends \WC_REST_Coupons_Controller {

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/**

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* Endpoint namespace.

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*

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* @var string

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*/

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protected $namespace = 'wc-analytics';

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/**

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* Get the query params for collections.

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*

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* @return array

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*/

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public function get_collection_params() {

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$params = parent::get_collection_params();

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$params['search'] = array(

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'description' => __( 'Limit results to coupons with codes matching a given string.', 'woocommerce' ),

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'type' => 'string',

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'validate_callback' => 'rest_validate_request_arg',

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);

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return $params;

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}

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/**

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* Add coupon code searching to the WC API.

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*

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* @param WP_REST_Request $request Request data.

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* @return array

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*/

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protected function prepare_objects_query( $request ) {

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$args = parent::prepare_objects_query( $request );

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if ( ! empty( $request['search'] ) ) {

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$args['search'] = $request['search'];

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$args['s'] = false;

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}

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return $args;

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}

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/**

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* Get a collection of posts and add the code search option to WP_Query.

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*

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* @param WP_REST_Request $request Full details about the request.

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* @return WP_Error|WP_REST_Response

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*/

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public function get_items( $request ) {

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add_filter( 'posts_where', array( __CLASS__, 'add_wp_query_search_code_filter' ), 10, 2 );

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$response = parent::get_items( $request );

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remove_filter( 'posts_where', array( __CLASS__, 'add_wp_query_search_code_filter' ), 10 );

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return $response;

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}

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/**

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* Add code searching to the WP Query

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*

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* @internal

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* @param string $where Where clause used to search posts.

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* @param object $wp_query WP_Query object.

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* @return string

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*/

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public static function add_wp_query_search_code_filter( $where, $wp_query ) {

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global $wpdb;

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$search = $wp_query->get( 'search' );

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if ( $search ) {

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$code_like = '%' . $wpdb->esc_like( $search ) . '%';

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$where .= $wpdb->prepare( "AND {$wpdb->posts}.post_title LIKE %s", $code_like );

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}

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return $where;

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}

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}

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