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20
1<?php
2/**
3 * Handles the sending of email previews via the WordPress.com REST API.
4 *
5 * @package automattic/jetpack
6 */
7
8use Automattic\Jetpack\Connection\Manager;
9use Automattic\Jetpack\Connection\Traits\WPCOM_REST_API_Proxy_Request;
10use Automattic\Jetpack\Status\Host;
11
12if ( ! defined( 'ABSPATH' ) ) {
13    exit( 0 );
14}
15
16/**
17 * Class WPCOM_REST_API_V2_Endpoint_Send_Email_Preview
18 * Handles the sending of email previews via the WordPress.com REST API
19 */
20class WPCOM_REST_API_V2_Endpoint_Send_Email_Preview extends WP_REST_Controller {
21
22    use WPCOM_REST_API_Proxy_Request;
23
24    /**
25     * Constructor.
26     */
27    public function __construct() {
28        $this->base_api_path                   = 'wpcom';
29        $this->version                         = 'v2';
30        $this->namespace                       = $this->base_api_path . '/' . $this->version;
31        $this->rest_base                       = '/send-email-preview';
32        $this->wpcom_is_wpcom_only_endpoint    = true;
33        $this->wpcom_is_site_specific_endpoint = true;
34
35        add_action( 'rest_api_init', array( $this, 'register_routes' ) );
36    }
37
38    /**
39     * Registers the routes for blogging prompts.
40     *
41     * @see register_rest_route()
42     */
43    public function register_routes() {
44        $options = array(
45            'show_in_index'       => true,
46            'methods'             => 'POST',
47            // if this is not a wpcom site, we need to proxy the request to wpcom
48            'callback'            => ( ( new Host() )->is_wpcom_simple() ) ? array(
49                $this,
50                'send_email_preview',
51            ) : array( $this, 'proxy_request_to_wpcom_as_user' ),
52            'permission_callback' => array( $this, 'permissions_check' ),
53            'args'                => array(
54                'id' => array(
55                    'description' => __( 'Unique identifier for the post.', 'jetpack' ),
56                    'type'        => 'integer',
57                ),
58            ),
59        );
60
61        register_rest_route(
62            $this->namespace,
63            $this->rest_base,
64            $options
65        );
66    }
67
68    /**
69     * Checks if the user is connected and has access to edit the post
70     *
71     * @param WP_REST_Request $request Full data about the request.
72     *
73     * @return true|WP_Error True if the request has edit access, WP_Error object otherwise.
74     */
75    public function permissions_check( $request ) {
76        if ( ! ( new Host() )->is_wpcom_simple() ) {
77            if ( ! ( new Manager() )->is_user_connected() ) {
78                return new WP_Error(
79                    'rest_cannot_send_email_preview',
80                    __( 'Please connect your user account to WordPress.com', 'jetpack' ),
81                    array( 'status' => rest_authorization_required_code() )
82                );
83            }
84        }
85
86        $post = get_post( $request->get_param( 'id' ) );
87
88        if ( is_wp_error( $post ) ) {
89            return $post;
90        }
91
92        if ( $post && ! current_user_can( 'edit_post', $post->ID ) ) {
93            return new WP_Error(
94                'rest_forbidden_context',
95                __( 'Please connect your user account to WordPress.com', 'jetpack' ),
96                array( 'status' => rest_authorization_required_code() )
97            );
98        }
99
100        return true;
101    }
102
103    /**
104     * Sends an email preview of a post to the current user.
105     *
106     * @param WP_REST_Request $request Full data about the request.
107     *
108     * @return WP_REST_Response|WP_Error Response object on success, or WP_Error object on failure.
109     */
110    public function send_email_preview( $request ) {
111        $post_id = $request['id'];
112        $post    = get_post( $post_id );
113
114        // Return error if the post cannot be retrieved
115        if ( is_wp_error( $post ) ) {
116            return $post;
117        }
118
119        // Check if the user's email is verified
120        if ( Email_Verification::is_email_unverified() ) {
121            return new WP_Error( 'unverified', __( 'Your email address must be verified.', 'jetpack' ), array( 'status' => rest_authorization_required_code() ) );
122        }
123
124        $current_user = wp_get_current_user();
125        $email        = $current_user->user_email;
126
127        // Try to create a new subscriber with the user's email
128        $subscriber = Blog_Subscriber::create( $email );
129        if ( ! $subscriber ) {
130            return new WP_Error( 'unverified', __( 'Could not create subscriber.', 'jetpack' ), array( 'status' => rest_authorization_required_code() ) );
131        }
132
133        // Send the post to the subscriber
134        require_once ABSPATH . 'wp-content/mu-plugins/email-subscriptions/subscription-mailer.php';
135        $mailer       = new Subscription_Mailer( $subscriber );
136        $subscription = $subscriber->get_subscription( get_current_blog_id() );
137        $mailer->send_post( $post, $subscription );
138
139        // Return a response
140        return new WP_REST_Response( 'Email preview sent successfully.', 200 );
141    }
142}
143
144wpcom_rest_api_v2_load_plugin( 'WPCOM_REST_API_V2_Endpoint_Send_Email_Preview' );