summaryrefslogtreecommitdiffstats
path: root/wp-includes/rest-api/endpoints/class-wp-rest-global-styles-revisions-controller.php
blob: 9ce7e2b3df66a3d78eb89ebde28faae185a3b101 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
<?php
/**
 * REST API: WP_REST_Global_Styles_Revisions_Controller class
 *
 * @package WordPress
 * @subpackage REST_API
 * @since 6.3.0
 */

/**
 * Core class used to access global styles revisions via the REST API.
 *
 * @since 6.3.0
 *
 * @see WP_REST_Controller
 */
class WP_REST_Global_Styles_Revisions_Controller extends WP_REST_Controller {
	/**
	 * Parent post type.
	 *
	 * @since 6.3.0
	 * @var string
	 */
	protected $parent_post_type;

	/**
	 * The base of the parent controller's route.
	 *
	 * @since 6.3.0
	 * @var string
	 */
	protected $parent_base;

	/**
	 * Constructor.
	 *
	 * @since 6.3.0
	 */
	public function __construct() {
		$this->parent_post_type = 'wp_global_styles';
		$this->rest_base        = 'revisions';
		$this->parent_base      = 'global-styles';
		$this->namespace        = 'wp/v2';
	}

	/**
	 * Registers the controller's routes.
	 *
	 * @since 6.3.0
	 */
	public function register_routes() {
		register_rest_route(
			$this->namespace,
			'/' . $this->parent_base . '/(?P<parent>[\d]+)/' . $this->rest_base,
			array(
				'args'   => array(
					'parent' => array(
						'description' => __( 'The ID for the parent of the revision.' ),
						'type'        => 'integer',
					),
				),
				array(
					'methods'             => WP_REST_Server::READABLE,
					'callback'            => array( $this, 'get_items' ),
					'permission_callback' => array( $this, 'get_item_permissions_check' ),
					'args'                => $this->get_collection_params(),
				),
				'schema' => array( $this, 'get_public_item_schema' ),
			)
		);
	}

	/**
	 * Retrieves the query params for collections.
	 *
	 * Inherits from WP_REST_Controller::get_collection_params(),
	 * also reflects changes to return value WP_REST_Revisions_Controller::get_collection_params().
	 *
	 * @since 6.3.0
	 *
	 * @return array Collection parameters.
	 */
	public function get_collection_params() {
		$collection_params                       = parent::get_collection_params();
		$collection_params['context']['default'] = 'view';
		$collection_params['offset']             = array(
			'description' => __( 'Offset the result set by a specific number of items.' ),
			'type'        => 'integer',
		);
		unset( $collection_params['search'] );
		unset( $collection_params['per_page']['default'] );

		return $collection_params;
	}

	/**
	 * Returns decoded JSON from post content string,
	 * or a 404 if not found.
	 *
	 * @since 6.3.0
	 *
	 * @param string $raw_json Encoded JSON from global styles custom post content.
	 * @return Array|WP_Error
	 */
	protected function get_decoded_global_styles_json( $raw_json ) {
		$decoded_json = json_decode( $raw_json, true );

		if ( is_array( $decoded_json ) && isset( $decoded_json['isGlobalStylesUserThemeJSON'] ) && true === $decoded_json['isGlobalStylesUserThemeJSON'] ) {
			return $decoded_json;
		}

		return new WP_Error(
			'rest_global_styles_not_found',
			__( 'Cannot find user global styles revisions.' ),
			array( 'status' => 404 )
		);
	}

	/**
	 * Returns paginated revisions of the given global styles config custom post type.
	 *
	 * The bulk of the body is taken from WP_REST_Revisions_Controller->get_items,
	 * but global styles does not require as many parameters.
	 *
	 * @since 6.3.0
	 *
	 * @param WP_REST_Request $request The request instance.
	 * @return WP_REST_Response|WP_Error
	 */
	public function get_items( $request ) {
		$parent = $this->get_parent( $request['parent'] );

		if ( is_wp_error( $parent ) ) {
			return $parent;
		}

		$global_styles_config = $this->get_decoded_global_styles_json( $parent->post_content );

		if ( is_wp_error( $global_styles_config ) ) {
			return $global_styles_config;
		}

		if ( wp_revisions_enabled( $parent ) ) {
			$registered = $this->get_collection_params();
			$query_args = array(
				'post_parent'    => $parent->ID,
				'post_type'      => 'revision',
				'post_status'    => 'inherit',
				'posts_per_page' => -1,
				'orderby'        => 'date ID',
				'order'          => 'DESC',
			);

			$parameter_mappings = array(
				'offset'   => 'offset',
				'page'     => 'paged',
				'per_page' => 'posts_per_page',
			);

			foreach ( $parameter_mappings as $api_param => $wp_param ) {
				if ( isset( $registered[ $api_param ], $request[ $api_param ] ) ) {
					$query_args[ $wp_param ] = $request[ $api_param ];
				}
			}

			$revisions_query = new WP_Query();
			$revisions       = $revisions_query->query( $query_args );
			$offset          = isset( $query_args['offset'] ) ? (int) $query_args['offset'] : 0;
			$page            = (int) $query_args['paged'];
			$total_revisions = $revisions_query->found_posts;

			if ( $total_revisions < 1 ) {
				// Out-of-bounds, run the query again without LIMIT for total count.
				unset( $query_args['paged'], $query_args['offset'] );
				$count_query = new WP_Query();
				$count_query->query( $query_args );

				$total_revisions = $count_query->found_posts;
			}

			if ( $revisions_query->query_vars['posts_per_page'] > 0 ) {
				$max_pages = ceil( $total_revisions / (int) $revisions_query->query_vars['posts_per_page'] );
			} else {
				$max_pages = $total_revisions > 0 ? 1 : 0;
			}
			if ( $total_revisions > 0 ) {
				if ( $offset >= $total_revisions ) {
					return new WP_Error(
						'rest_revision_invalid_offset_number',
						__( 'The offset number requested is larger than or equal to the number of available revisions.' ),
						array( 'status' => 400 )
					);
				} elseif ( ! $offset && $page > $max_pages ) {
					return new WP_Error(
						'rest_revision_invalid_page_number',
						__( 'The page number requested is larger than the number of pages available.' ),
						array( 'status' => 400 )
					);
				}
			}
		} else {
			$revisions       = array();
			$total_revisions = 0;
			$max_pages       = 0;
			$page            = (int) $request['page'];
		}

		$response = array();

		foreach ( $revisions as $revision ) {
			$data       = $this->prepare_item_for_response( $revision, $request );
			$response[] = $this->prepare_response_for_collection( $data );
		}

		$response = rest_ensure_response( $response );

		$response->header( 'X-WP-Total', (int) $total_revisions );
		$response->header( 'X-WP-TotalPages', (int) $max_pages );

		$request_params = $request->get_query_params();
		$base_path      = rest_url( sprintf( '%s/%s/%d/%s', $this->namespace, $this->parent_base, $request['parent'], $this->rest_base ) );
		$base           = add_query_arg( urlencode_deep( $request_params ), $base_path );

		if ( $page > 1 ) {
			$prev_page = $page - 1;

			if ( $prev_page > $max_pages ) {
				$prev_page = $max_pages;
			}

			$prev_link = add_query_arg( 'page', $prev_page, $base );
			$response->link_header( 'prev', $prev_link );
		}
		if ( $max_pages > $page ) {
			$next_page = $page + 1;
			$next_link = add_query_arg( 'page', $next_page, $base );

			$response->link_header( 'next', $next_link );
		}

		return $response;
	}

	/**
	 * Checks the post_date_gmt or modified_gmt and prepare any post or
	 * modified date for single post output.
	 *
	 * Duplicate of WP_REST_Revisions_Controller::prepare_date_response.
	 *
	 * @since 6.3.0
	 *
	 * @param string      $date_gmt GMT publication time.
	 * @param string|null $date     Optional. Local publication time. Default null.
	 * @return string|null ISO8601/RFC3339 formatted datetime, otherwise null.
	 */
	protected function prepare_date_response( $date_gmt, $date = null ) {
		if ( '0000-00-00 00:00:00' === $date_gmt ) {
			return null;
		}

		if ( isset( $date ) ) {
			return mysql_to_rfc3339( $date );
		}

		return mysql_to_rfc3339( $date_gmt );
	}

	/**
	 * Prepares the revision for the REST response.
	 *
	 * @since 6.3.0
	 *
	 * @param WP_Post         $post    Post revision object.
	 * @param WP_REST_Request $request Request object.
	 * @return WP_REST_Response|WP_Error Response object.
	 */
	public function prepare_item_for_response( $post, $request ) {
		$parent               = $this->get_parent( $request['parent'] );
		$global_styles_config = $this->get_decoded_global_styles_json( $post->post_content );

		if ( is_wp_error( $global_styles_config ) ) {
			return $global_styles_config;
		}

		$fields = $this->get_fields_for_response( $request );
		$data   = array();

		if ( ! empty( $global_styles_config['styles'] ) || ! empty( $global_styles_config['settings'] ) ) {
			$global_styles_config = ( new WP_Theme_JSON( $global_styles_config, 'custom' ) )->get_raw_data();
			if ( rest_is_field_included( 'settings', $fields ) ) {
				$data['settings'] = ! empty( $global_styles_config['settings'] ) ? $global_styles_config['settings'] : new stdClass();
			}
			if ( rest_is_field_included( 'styles', $fields ) ) {
				$data['styles'] = ! empty( $global_styles_config['styles'] ) ? $global_styles_config['styles'] : new stdClass();
			}
		}

		if ( rest_is_field_included( 'author', $fields ) ) {
			$data['author'] = (int) $post->post_author;
		}

		if ( rest_is_field_included( 'date', $fields ) ) {
			$data['date'] = $this->prepare_date_response( $post->post_date_gmt, $post->post_date );
		}

		if ( rest_is_field_included( 'date_gmt', $fields ) ) {
			$data['date_gmt'] = $this->prepare_date_response( $post->post_date_gmt );
		}

		if ( rest_is_field_included( 'id', $fields ) ) {
			$data['id'] = (int) $post->ID;
		}

		if ( rest_is_field_included( 'modified', $fields ) ) {
			$data['modified'] = $this->prepare_date_response( $post->post_modified_gmt, $post->post_modified );
		}

		if ( rest_is_field_included( 'modified_gmt', $fields ) ) {
			$data['modified_gmt'] = $this->prepare_date_response( $post->post_modified_gmt );
		}

		if ( rest_is_field_included( 'parent', $fields ) ) {
			$data['parent'] = (int) $parent->ID;
		}

		$context = ! empty( $request['context'] ) ? $request['context'] : 'view';
		$data    = $this->add_additional_fields_to_object( $data, $request );
		$data    = $this->filter_response_by_context( $data, $context );

		return rest_ensure_response( $data );
	}

	/**
	 * Retrieves the revision's schema, conforming to JSON Schema.
	 *
	 * @since 6.3.0
	 *
	 * @return array Item schema data.
	 */
	public function get_item_schema() {
		if ( $this->schema ) {
			return $this->add_additional_fields_schema( $this->schema );
		}

		$schema = array(
			'$schema'    => 'http://json-schema.org/draft-04/schema#',
			'title'      => "{$this->parent_post_type}-revision",
			'type'       => 'object',
			// Base properties for every revision.
			'properties' => array(

				/*
				 * Adds settings and styles from the WP_REST_Revisions_Controller item fields.
				 * Leaves out GUID as global styles shouldn't be accessible via URL.
				 */
				'author'       => array(
					'description' => __( 'The ID for the author of the revision.' ),
					'type'        => 'integer',
					'context'     => array( 'view', 'edit', 'embed' ),
				),
				'date'         => array(
					'description' => __( "The date the revision was published, in the site's timezone." ),
					'type'        => 'string',
					'format'      => 'date-time',
					'context'     => array( 'view', 'edit', 'embed' ),
				),
				'date_gmt'     => array(
					'description' => __( 'The date the revision was published, as GMT.' ),
					'type'        => 'string',
					'format'      => 'date-time',
					'context'     => array( 'view', 'edit' ),
				),
				'id'           => array(
					'description' => __( 'Unique identifier for the revision.' ),
					'type'        => 'integer',
					'context'     => array( 'view', 'edit', 'embed' ),
				),
				'modified'     => array(
					'description' => __( "The date the revision was last modified, in the site's timezone." ),
					'type'        => 'string',
					'format'      => 'date-time',
					'context'     => array( 'view', 'edit' ),
				),
				'modified_gmt' => array(
					'description' => __( 'The date the revision was last modified, as GMT.' ),
					'type'        => 'string',
					'format'      => 'date-time',
					'context'     => array( 'view', 'edit' ),
				),
				'parent'       => array(
					'description' => __( 'The ID for the parent of the revision.' ),
					'type'        => 'integer',
					'context'     => array( 'view', 'edit', 'embed' ),
				),

				// Adds settings and styles from the WP_REST_Global_Styles_Controller parent schema.
				'styles'       => array(
					'description' => __( 'Global styles.' ),
					'type'        => array( 'object' ),
					'context'     => array( 'view', 'edit' ),
				),
				'settings'     => array(
					'description' => __( 'Global settings.' ),
					'type'        => array( 'object' ),
					'context'     => array( 'view', 'edit' ),
				),
			),
		);

		$this->schema = $schema;

		return $this->add_additional_fields_schema( $this->schema );
	}

	/**
	 * Checks if a given request has access to read a single global style.
	 *
	 * @since 6.3.0
	 *
	 * @param WP_REST_Request $request Full details about the request.
	 * @return true|WP_Error True if the request has read access, WP_Error object otherwise.
	 */
	public function get_item_permissions_check( $request ) {
		$post = $this->get_parent( $request['parent'] );
		if ( is_wp_error( $post ) ) {
			return $post;
		}

		/*
		 * The same check as WP_REST_Global_Styles_Controller::get_item_permissions_check.
		 */
		if ( ! current_user_can( 'read_post', $post->ID ) ) {
			return new WP_Error(
				'rest_cannot_view',
				__( 'Sorry, you are not allowed to view revisions for this global style.' ),
				array( 'status' => rest_authorization_required_code() )
			);
		}

		return true;
	}

	/**
	 * Gets the parent post, if the ID is valid.
	 *
	 * Duplicate of WP_REST_Revisions_Controller::get_parent.
	 *
	 * @since 6.3.0
	 *
	 * @param int $parent_post_id Supplied ID.
	 * @return WP_Post|WP_Error Post object if ID is valid, WP_Error otherwise.
	 */
	protected function get_parent( $parent_post_id ) {
		$error = new WP_Error(
			'rest_post_invalid_parent',
			__( 'Invalid post parent ID.' ),
			array( 'status' => 404 )
		);

		if ( (int) $parent_post_id <= 0 ) {
			return $error;
		}

		$parent_post = get_post( (int) $parent_post_id );

		if ( empty( $parent_post ) || empty( $parent_post->ID )
			|| $this->parent_post_type !== $parent_post->post_type
		) {
			return $error;
		}

		return $parent_post;
	}
}