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1<?php
2/**
3 * Defines the endpoints used for handling tokens for the Social Image Generator.
4 *
5 * @package automattic/jetpack-publicize
6 */
7
8namespace Automattic\Jetpack\Publicize\Social_Image_Generator;
9
10use Automattic\Jetpack\Publicize\Publicize_Utils as Utils;
11use WP_Error;
12use WP_REST_Controller;
13use WP_REST_Request;
14use WP_REST_Server;
15
16/**
17 * Class used to register token related REST API endpoints used by Social Image Generator.
18 */
19class REST_Token_Controller extends WP_REST_Controller {
20
21    /**
22     * Register REST API endpoints.
23     *
24     * @return void
25     */
26    public function register_routes() {
27        register_rest_route(
28            'jetpack/v4',
29            '/social-image-generator/generate-preview-token',
30            array(
31                'methods'             => WP_REST_Server::CREATABLE,
32                'callback'            => array( $this, 'generate_preview_token' ),
33                'permission_callback' => array( $this, 'permissions_check' ),
34                'args'                => $this->get_endpoint_args_for_item_schema( WP_REST_Server::CREATABLE ),
35                'schema'              => array( $this, 'get_public_item_schema' ),
36            )
37        );
38    }
39
40    /**
41     * Passes the request parameters to the WPCOM endpoint to generate a preview image token.
42     *
43     * @param WP_REST_Request $request The request object, which includes the parameters.
44     * @return array|WP_Error The token or an error.
45     */
46    public function generate_preview_token( $request ) {
47
48        Utils::endpoint_deprecated_warning(
49            __METHOD__,
50            'jetpack-14.5, jetpack-social-6.2.3',
51            'jetpack/v4/social-image-generator/generate-preview-token',
52            'wpcom/v2/publicize/social-image-generator/generate-token'
53        );
54
55        $text      = $request->get_param( 'text' );
56        $image_url = $request->get_param( 'image_url' );
57        $template  = $request->get_param( 'template' );
58
59        return fetch_token( $text, $image_url, $template );
60    }
61
62    /**
63     * Check the current user permissions for the endpoints.
64     *
65     * @return bool|WP_Error True if user can manage options.
66     */
67    public function permissions_check() {
68        if ( ! current_user_can( 'edit_posts' ) ) {
69            return new WP_Error(
70                'rest_forbidden_context',
71                __( 'Sorry, you are not allowed to access this endpoint.', 'jetpack-publicize-pkg' ),
72                array( 'status' => rest_authorization_required_code() )
73            );
74        }
75
76        return true;
77    }
78
79    /**
80     * Retrieves the JSON schema for the token generation.
81     *
82     * @return array Schema data.
83     */
84    public function get_item_schema() {
85        $schema = array(
86            '$schema'    => 'http://json-schema.org/draft-04/schema#',
87            'title'      => 'social-image-generator-token',
88            'type'       => 'object',
89            'properties' => array(
90                'text'      => array(
91                    'description' => __( 'The text to be used to generate the image.', 'jetpack-publicize-pkg' ),
92                    'type'        => 'string',
93                    'required'    => true,
94                    'context'     => array( 'edit' ),
95                ),
96                'image_url' => array(
97                    'description' => __( 'The URL of the background image to use when generating the social image.', 'jetpack-publicize-pkg' ),
98                    'type'        => 'string',
99                    'format'      => 'uri',
100                    'required'    => false,
101                    'context'     => array( 'edit' ),
102                ),
103                'template'  => array(
104                    'description' => __( 'The template slug', 'jetpack-publicize-pkg' ),
105                    'type'        => 'string',
106                    'enum'        => Templates::TEMPLATES,
107                    'required'    => false,
108                ),
109            ),
110        );
111
112        return rest_default_additional_properties_to_false( $schema );
113    }
114}