class.jetpack-display-posts-widget-base.php
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class.jetpack-display-posts-widget.php
7 months ago
style.css
7 years ago
class.jetpack-display-posts-widget-base.php
851 lines
| 1 | <?php // phpcs:ignore WordPress.Files.FileName.InvalidClassFileName |
| 2 | |
| 3 | use Automattic\Jetpack\Image_CDN\Image_CDN_Core; |
| 4 | |
| 5 | if ( ! defined( 'ABSPATH' ) ) { |
| 6 | exit( 0 ); |
| 7 | } |
| 8 | |
| 9 | /** |
| 10 | * For back-compat, the final widget class must be named |
| 11 | * Jetpack_Display_Posts_Widget. |
| 12 | * |
| 13 | * For convenience, it's nice to have a widget class constructor with no |
| 14 | * arguments. Otherwise, we have to register the widget with an instance |
| 15 | * instead of a class name. This makes unregistering annoying. |
| 16 | * |
| 17 | * Both WordPress.com and Jetpack implement the final widget class by |
| 18 | * extending this __Base class and adding data fetching and storage. |
| 19 | * |
| 20 | * This would be a bit cleaner with dependency injection, but we already |
| 21 | * use mocking to test, so it's not a big win. |
| 22 | * |
| 23 | * That this widget is currently implemented as these two classes |
| 24 | * is an implementation detail and should not be depended on :) |
| 25 | * |
| 26 | * phpcs:disable PEAR.NamingConventions.ValidClassName.Invalid |
| 27 | */ |
| 28 | abstract class Jetpack_Display_Posts_Widget__Base extends WP_Widget { |
| 29 | // phpcs:enable PEAR.NamingConventions.ValidClassName.Invalid |
| 30 | |
| 31 | /** |
| 32 | * Remote service API URL prefix. |
| 33 | * |
| 34 | * @var string |
| 35 | */ |
| 36 | public $service_url = 'https://public-api.wordpress.com/rest/v1.1/'; |
| 37 | |
| 38 | /** |
| 39 | * Jetpack_Display_Posts_Widget__Base constructor. |
| 40 | */ |
| 41 | public function __construct() { |
| 42 | parent::__construct( |
| 43 | // Internal id. |
| 44 | 'jetpack_display_posts_widget', |
| 45 | /** This filter is documented in modules/widgets/facebook-likebox.php */ |
| 46 | apply_filters( 'jetpack_widget_name', __( 'Display WordPress Posts', 'jetpack' ) ), |
| 47 | array( |
| 48 | 'description' => __( 'Displays a list of recent posts from another WordPress.com or Jetpack-enabled blog.', 'jetpack' ), |
| 49 | 'customize_selective_refresh' => true, |
| 50 | ) |
| 51 | ); |
| 52 | |
| 53 | if ( is_customize_preview() ) { |
| 54 | add_action( 'wp_enqueue_scripts', array( $this, 'enqueue_scripts' ) ); |
| 55 | } |
| 56 | } |
| 57 | |
| 58 | /** |
| 59 | * Enqueue CSS and JavaScript. |
| 60 | * |
| 61 | * @since 4.0.0 |
| 62 | */ |
| 63 | public function enqueue_scripts() { |
| 64 | wp_enqueue_style( |
| 65 | 'jetpack_display_posts_widget', |
| 66 | plugins_url( 'style.css', __FILE__ ), |
| 67 | array(), |
| 68 | JETPACK__VERSION |
| 69 | ); |
| 70 | } |
| 71 | |
| 72 | // DATA STORE: Must implement. |
| 73 | |
| 74 | /** |
| 75 | * Gets blog data from the cache. |
| 76 | * |
| 77 | * @param string $site Site. |
| 78 | * |
| 79 | * @return array|WP_Error |
| 80 | */ |
| 81 | abstract public function get_blog_data( $site ); |
| 82 | |
| 83 | /** |
| 84 | * Update a widget instance. |
| 85 | * |
| 86 | * @param string $site The site to fetch the latest data for. |
| 87 | * |
| 88 | * @return array - the new data |
| 89 | */ |
| 90 | abstract public function update_instance( $site ); |
| 91 | |
| 92 | // WIDGET API. |
| 93 | |
| 94 | /** |
| 95 | * Set up the widget display on the front end. |
| 96 | * |
| 97 | * @param array $args Widget args. |
| 98 | * @param array $instance Widget instance. |
| 99 | */ |
| 100 | public function widget( $args, $instance ) { |
| 101 | /** This action is documented in modules/widgets/gravatar-profile.php */ |
| 102 | do_action( 'jetpack_stats_extra', 'widget_view', 'display_posts' ); |
| 103 | |
| 104 | // Enqueue front end assets. |
| 105 | $this->enqueue_scripts(); |
| 106 | |
| 107 | $content = $args['before_widget']; |
| 108 | |
| 109 | if ( empty( $instance['url'] ) ) { |
| 110 | if ( current_user_can( 'manage_options' ) ) { |
| 111 | $content .= '<p>'; |
| 112 | /* Translators: the "Blog URL" field mentioned is the input field labeled as such in the widget form. */ |
| 113 | $content .= esc_html__( 'The Blog URL is not properly set up in the widget.', 'jetpack' ); |
| 114 | $content .= '</p>'; |
| 115 | } |
| 116 | $content .= $args['after_widget']; |
| 117 | |
| 118 | echo $content; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped |
| 119 | return; |
| 120 | } |
| 121 | |
| 122 | $data = $this->get_blog_data( $instance['url'] ); |
| 123 | // Check for errors. |
| 124 | if ( is_wp_error( $data ) || empty( $data['site_info']['data'] ) ) { |
| 125 | $content .= '<p>' . __( 'Cannot load blog information at this time.', 'jetpack' ) . '</p>'; |
| 126 | $content .= $args['after_widget']; |
| 127 | |
| 128 | echo $content; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped |
| 129 | return; |
| 130 | } |
| 131 | |
| 132 | $site_info = $data['site_info']['data']; |
| 133 | |
| 134 | if ( ! empty( $instance['title'] ) ) { |
| 135 | /** This filter is documented in core/src/wp-includes/default-widgets.php */ |
| 136 | $instance['title'] = apply_filters( 'widget_title', $instance['title'] ); |
| 137 | $content .= $args['before_title'] . $instance['title'] . ': ' . $site_info->name . $args['after_title']; |
| 138 | } else { |
| 139 | $content .= $args['before_title'] . esc_html( $site_info->name ) . $args['after_title']; |
| 140 | } |
| 141 | |
| 142 | $content .= '<div class="jetpack-display-remote-posts">'; |
| 143 | |
| 144 | if ( is_wp_error( $data['posts']['data'] ) || empty( $data['posts']['data'] ) ) { |
| 145 | $content .= '<p>' . __( 'Cannot load blog posts at this time.', 'jetpack' ) . '</p>'; |
| 146 | $content .= '</div><!-- .jetpack-display-remote-posts -->'; |
| 147 | $content .= $args['after_widget']; |
| 148 | |
| 149 | echo $content; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped |
| 150 | return; |
| 151 | } |
| 152 | |
| 153 | $posts_list = $data['posts']['data']; |
| 154 | |
| 155 | /** |
| 156 | * Show only as much posts as we need. If we have less than configured amount, |
| 157 | * we must show only that much posts. |
| 158 | */ |
| 159 | $number_of_posts = min( $instance['number_of_posts'], is_countable( $posts_list ) ? count( $posts_list ) : 0 ); |
| 160 | |
| 161 | for ( $i = 0; $i < $number_of_posts; $i++ ) { |
| 162 | $single_post = $posts_list[ $i ]; |
| 163 | $post_title = ( $single_post['title'] ) ? $single_post['title'] : '( No Title )'; |
| 164 | |
| 165 | $target = ''; |
| 166 | if ( isset( $instance['open_in_new_window'] ) && true === $instance['open_in_new_window'] ) { |
| 167 | $target = ' target="_blank" rel="noopener"'; |
| 168 | } |
| 169 | $content .= '<h4><a href="' . esc_url( $single_post['url'] ) . '"' . $target . '>' . esc_html( $post_title ) . '</a></h4>' . "\n"; |
| 170 | if ( ( true === $instance['featured_image'] ) && ( ! empty( $single_post['featured_image'] ) ) ) { |
| 171 | $featured_image = $single_post['featured_image']; |
| 172 | /** |
| 173 | * Allows setting up custom Photon parameters to manipulate the image output in the Display Posts widget. |
| 174 | * |
| 175 | * @see https://developer.wordpress.com/docs/photon/ |
| 176 | * |
| 177 | * @module widgets |
| 178 | * |
| 179 | * @since 3.6.0 |
| 180 | * |
| 181 | * @param array $args Array of Photon Parameters. |
| 182 | */ |
| 183 | $image_params = apply_filters( 'jetpack_display_posts_widget_image_params', array() ); |
| 184 | $content .= '<a title="' . esc_attr( $post_title ) . '" href="' . esc_url( $single_post['url'] ) . '"' . $target . '><img src="' . Image_CDN_Core::cdn_url( $featured_image, $image_params ) . '" alt="' . esc_attr( $post_title ) . '"/></a>'; |
| 185 | } |
| 186 | |
| 187 | if ( true === $instance['show_excerpts'] ) { |
| 188 | $content .= $single_post['excerpt']; |
| 189 | } |
| 190 | } |
| 191 | |
| 192 | $content .= '</div><!-- .jetpack-display-remote-posts -->'; |
| 193 | $content .= $args['after_widget']; |
| 194 | |
| 195 | /** |
| 196 | * Filter the WordPress Posts widget content. |
| 197 | * |
| 198 | * @module widgets |
| 199 | * |
| 200 | * @since 4.7.0 |
| 201 | * |
| 202 | * @param string $content Widget content. |
| 203 | */ |
| 204 | echo apply_filters( 'jetpack_display_posts_widget_content', $content ); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped |
| 205 | } |
| 206 | |
| 207 | /** |
| 208 | * Display the widget administration form. |
| 209 | * |
| 210 | * @param array $instance Widget instance configuration. |
| 211 | * |
| 212 | * @return string|void |
| 213 | */ |
| 214 | public function form( $instance ) { |
| 215 | |
| 216 | /** |
| 217 | * Initialize widget configuration variables. |
| 218 | */ |
| 219 | $title = $instance['title'] ?? __( 'Recent Posts', 'jetpack' ); |
| 220 | $url = $instance['url'] ?? ''; |
| 221 | $number_of_posts = $instance['number_of_posts'] ?? 5; |
| 222 | $open_in_new_window = $instance['open_in_new_window'] ?? false; |
| 223 | $featured_image = $instance['featured_image'] ?? false; |
| 224 | $show_excerpts = $instance['show_excerpts'] ?? false; |
| 225 | |
| 226 | /** |
| 227 | * Check if the widget instance has errors available. |
| 228 | * |
| 229 | * Only do so if a URL is set. |
| 230 | */ |
| 231 | $update_errors = array(); |
| 232 | |
| 233 | if ( ! empty( $url ) ) { |
| 234 | $data = $this->get_blog_data( $url ); |
| 235 | $update_errors = $this->extract_errors_from_blog_data( $data ); |
| 236 | } |
| 237 | |
| 238 | ?> |
| 239 | <p> |
| 240 | <label for="<?php echo esc_attr( $this->get_field_id( 'title' ) ); ?>"><?php esc_html_e( 'Title:', 'jetpack' ); ?></label> |
| 241 | <input class="widefat" id="<?php echo esc_attr( $this->get_field_id( 'title' ) ); ?>" name="<?php echo esc_attr( $this->get_field_name( 'title' ) ); ?>" type="text" value="<?php echo esc_attr( $title ); ?>" /> |
| 242 | </p> |
| 243 | |
| 244 | <p> |
| 245 | <label for="<?php echo esc_attr( $this->get_field_id( 'url' ) ); ?>"><?php esc_html_e( 'Blog URL:', 'jetpack' ); ?></label> |
| 246 | <input class="widefat" id="<?php echo esc_attr( $this->get_field_id( 'url' ) ); ?>" name="<?php echo esc_attr( $this->get_field_name( 'url' ) ); ?>" type="text" value="<?php echo esc_attr( $url ); ?>" /> |
| 247 | <i> |
| 248 | <?php esc_html_e( 'Enter a WordPress.com or Jetpack WordPress site URL.', 'jetpack' ); ?> |
| 249 | </i> |
| 250 | <?php |
| 251 | /** |
| 252 | * Show an error if the URL field was left empty. |
| 253 | * |
| 254 | * The error is shown only when the widget was already saved. |
| 255 | */ |
| 256 | if ( empty( $url ) && ! preg_match( '/__i__|%i%/', $this->id ) ) { |
| 257 | ?> |
| 258 | <br /> |
| 259 | <i class="error-message"><?php esc_html_e( 'You must specify a valid blog URL!', 'jetpack' ); ?></i> |
| 260 | <?php |
| 261 | } |
| 262 | ?> |
| 263 | </p> |
| 264 | <p> |
| 265 | <label for="<?php echo esc_attr( $this->get_field_id( 'number_of_posts' ) ); ?>"><?php esc_html_e( 'Number of Posts to Display:', 'jetpack' ); ?></label> |
| 266 | <select name="<?php echo esc_attr( $this->get_field_name( 'number_of_posts' ) ); ?>"> |
| 267 | <?php |
| 268 | for ( $i = 1; $i <= 10; $i++ ) { |
| 269 | echo '<option value="' . esc_attr( $i ) . '" ' . selected( $number_of_posts, $i ) . '>' . esc_html( $i ) . '</option>'; |
| 270 | } |
| 271 | ?> |
| 272 | </select> |
| 273 | </p> |
| 274 | <p> |
| 275 | <label for="<?php echo esc_attr( $this->get_field_id( 'open_in_new_window' ) ); ?>"><?php esc_html_e( 'Open links in new window/tab:', 'jetpack' ); ?></label> |
| 276 | <input type="checkbox" name="<?php echo esc_attr( $this->get_field_name( 'open_in_new_window' ) ); ?>" <?php checked( $open_in_new_window, 1 ); ?> /> |
| 277 | </p> |
| 278 | <p> |
| 279 | <label for="<?php echo esc_attr( $this->get_field_id( 'featured_image' ) ); ?>"><?php esc_html_e( 'Show Featured Image:', 'jetpack' ); ?></label> |
| 280 | <input type="checkbox" name="<?php echo esc_attr( $this->get_field_name( 'featured_image' ) ); ?>" <?php checked( $featured_image, 1 ); ?> /> |
| 281 | </p> |
| 282 | <p> |
| 283 | <label for="<?php echo esc_attr( $this->get_field_id( 'show_excerpts' ) ); ?>"><?php esc_html_e( 'Show Excerpts:', 'jetpack' ); ?></label> |
| 284 | <input type="checkbox" name="<?php echo esc_attr( $this->get_field_name( 'show_excerpts' ) ); ?>" <?php checked( $show_excerpts, 1 ); ?> /> |
| 285 | </p> |
| 286 | |
| 287 | <?php |
| 288 | |
| 289 | /** |
| 290 | * Show error messages. |
| 291 | */ |
| 292 | if ( ! empty( $update_errors['message'] ) ) { |
| 293 | |
| 294 | /** |
| 295 | * Prepare the error messages. |
| 296 | */ |
| 297 | |
| 298 | $where_message = ''; |
| 299 | switch ( $update_errors['where'] ) { |
| 300 | case 'posts': |
| 301 | $where_message .= __( 'An error occurred while downloading blog posts list', 'jetpack' ); |
| 302 | break; |
| 303 | |
| 304 | /** |
| 305 | * If something else, beside `posts` and `site_info` broke, |
| 306 | * don't handle it and default to blog `information`, |
| 307 | * as it is generic enough. |
| 308 | */ |
| 309 | case 'site_info': |
| 310 | default: |
| 311 | $where_message .= __( 'An error occurred while downloading blog information', 'jetpack' ); |
| 312 | break; |
| 313 | } |
| 314 | |
| 315 | ?> |
| 316 | <p class="error-message"> |
| 317 | <?php echo esc_html( $where_message ); ?>: |
| 318 | <br /> |
| 319 | <i> |
| 320 | <?php echo esc_html( $update_errors['message'] ); ?> |
| 321 | <?php |
| 322 | /** |
| 323 | * If there is any debug - show it here. |
| 324 | */ |
| 325 | if ( ! empty( $update_errors['debug'] ) ) { |
| 326 | ?> |
| 327 | <br /> |
| 328 | <br /> |
| 329 | <?php esc_html_e( 'Detailed information', 'jetpack' ); ?>: |
| 330 | <br /> |
| 331 | <?php echo esc_html( $update_errors['debug'] ); ?> |
| 332 | <?php |
| 333 | } |
| 334 | ?> |
| 335 | </i> |
| 336 | </p> |
| 337 | |
| 338 | <?php |
| 339 | } |
| 340 | } |
| 341 | |
| 342 | /** |
| 343 | * Widget update function. |
| 344 | * |
| 345 | * @param array $new_instance New instance widget settings. |
| 346 | * @param array $old_instance Old instance widget settings. |
| 347 | */ |
| 348 | public function update( $new_instance, $old_instance ) { // phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable |
| 349 | |
| 350 | $instance = array(); |
| 351 | $instance['title'] = ( ! empty( $new_instance['title'] ) ) ? wp_strip_all_tags( $new_instance['title'] ) : ''; |
| 352 | $instance['url'] = ( ! empty( $new_instance['url'] ) ) ? wp_strip_all_tags( trim( $new_instance['url'] ) ) : ''; |
| 353 | $instance['url'] = preg_replace( '!^https?://!is', '', $instance['url'] ); |
| 354 | $instance['url'] = untrailingslashit( $instance['url'] ); |
| 355 | |
| 356 | /** |
| 357 | * Check if the URL should be with or without the www prefix before saving. |
| 358 | */ |
| 359 | if ( ! empty( $instance['url'] ) ) { |
| 360 | $blog_data = $this->fetch_blog_data( $instance['url'], array(), true ); |
| 361 | |
| 362 | if ( is_wp_error( $blog_data['site_info']['error'] ) && str_starts_with( $instance['url'], 'www.' ) ) { |
| 363 | $blog_data = $this->fetch_blog_data( substr( $instance['url'], 4 ), array(), true ); |
| 364 | |
| 365 | if ( ! is_wp_error( $blog_data['site_info']['error'] ) ) { |
| 366 | $instance['url'] = substr( $instance['url'], 4 ); |
| 367 | } |
| 368 | } |
| 369 | } |
| 370 | |
| 371 | $instance['number_of_posts'] = ( ! empty( $new_instance['number_of_posts'] ) ) ? (int) $new_instance['number_of_posts'] : ''; |
| 372 | $instance['open_in_new_window'] = ( ! empty( $new_instance['open_in_new_window'] ) ) ? true : ''; |
| 373 | $instance['featured_image'] = ( ! empty( $new_instance['featured_image'] ) ) ? true : ''; |
| 374 | $instance['show_excerpts'] = ( ! empty( $new_instance['show_excerpts'] ) ) ? true : ''; |
| 375 | |
| 376 | /** |
| 377 | * If there is no cache entry for the specified URL, run a forced update. |
| 378 | * |
| 379 | * @see get_blog_data Returns WP_Error if the cache is empty, which is what is needed here. |
| 380 | */ |
| 381 | $cached_data = $this->get_blog_data( $instance['url'] ); |
| 382 | |
| 383 | if ( is_wp_error( $cached_data ) ) { |
| 384 | $this->update_instance( $instance['url'] ); |
| 385 | } |
| 386 | |
| 387 | return $instance; |
| 388 | } |
| 389 | |
| 390 | // DATA PROCESSING. |
| 391 | |
| 392 | /** |
| 393 | * Expiring transients have a name length maximum of 45 characters, |
| 394 | * so this function returns an abbreviated MD5 hash to use instead of |
| 395 | * the full URI. |
| 396 | * |
| 397 | * @param string $site Site to get the hash for. |
| 398 | * |
| 399 | * @return string |
| 400 | */ |
| 401 | public function get_site_hash( $site ) { |
| 402 | return substr( md5( $site ), 0, 21 ); |
| 403 | } |
| 404 | |
| 405 | /** |
| 406 | * Fetch a remote service endpoint and parse it. |
| 407 | * |
| 408 | * Timeout is set to 15 seconds right now, because sometimes the WordPress API |
| 409 | * takes more than 5 seconds to fully respond. |
| 410 | * |
| 411 | * Caching is used here so we can avoid re-downloading the same endpoint |
| 412 | * in a single request. |
| 413 | * |
| 414 | * @param string $endpoint Parametrized endpoint to call. |
| 415 | * |
| 416 | * @param int $timeout How much time to wait for the API to respond before failing. |
| 417 | * |
| 418 | * @return array|WP_Error |
| 419 | */ |
| 420 | public function fetch_service_endpoint( $endpoint, $timeout = 15 ) { |
| 421 | |
| 422 | /** |
| 423 | * Holds endpoint request cache. |
| 424 | */ |
| 425 | static $cache = array(); |
| 426 | |
| 427 | if ( ! isset( $cache[ $endpoint ] ) ) { |
| 428 | $raw_data = $this->wp_wp_remote_get( $this->service_url . ltrim( $endpoint, '/' ), array( 'timeout' => $timeout ) ); |
| 429 | $cache[ $endpoint ] = $this->parse_service_response( $raw_data ); |
| 430 | } |
| 431 | |
| 432 | return $cache[ $endpoint ]; |
| 433 | } |
| 434 | |
| 435 | /** |
| 436 | * Parse data from service response. |
| 437 | * Do basic error handling for general service and data errors |
| 438 | * |
| 439 | * @param array $service_response Response from the service. |
| 440 | * |
| 441 | * @return array|WP_Error |
| 442 | */ |
| 443 | public function parse_service_response( $service_response ) { |
| 444 | /** |
| 445 | * If there is an error, we add the error message to the parsed response |
| 446 | */ |
| 447 | if ( is_wp_error( $service_response ) ) { |
| 448 | return new WP_Error( |
| 449 | 'general_error', |
| 450 | __( 'An error occurred fetching the remote data.', 'jetpack' ), |
| 451 | $service_response->get_error_messages() |
| 452 | ); |
| 453 | } |
| 454 | |
| 455 | /** |
| 456 | * Validate HTTP response code. |
| 457 | */ |
| 458 | if ( 200 !== wp_remote_retrieve_response_code( $service_response ) ) { |
| 459 | return new WP_Error( |
| 460 | 'http_error', |
| 461 | __( 'An error occurred fetching the remote data.', 'jetpack' ), |
| 462 | wp_remote_retrieve_response_message( $service_response ) |
| 463 | ); |
| 464 | } |
| 465 | |
| 466 | /** |
| 467 | * Extract service response body from the request. |
| 468 | */ |
| 469 | |
| 470 | $service_response_body = wp_remote_retrieve_body( $service_response ); |
| 471 | |
| 472 | /** |
| 473 | * No body has been set in the response. This should be pretty bad. |
| 474 | */ |
| 475 | if ( ! $service_response_body ) { |
| 476 | return new WP_Error( |
| 477 | 'no_body', |
| 478 | __( 'Invalid remote response.', 'jetpack' ), |
| 479 | 'No body in response.' |
| 480 | ); |
| 481 | } |
| 482 | |
| 483 | /** |
| 484 | * Parse the JSON response from the API. Convert to associative array. |
| 485 | */ |
| 486 | $parsed_data = json_decode( $service_response_body ); |
| 487 | |
| 488 | /** |
| 489 | * If there is a problem with parsing the posts return an empty array. |
| 490 | */ |
| 491 | if ( $parsed_data === null ) { |
| 492 | return new WP_Error( |
| 493 | 'no_body', |
| 494 | __( 'Invalid remote response.', 'jetpack' ), |
| 495 | 'Invalid JSON from remote.' |
| 496 | ); |
| 497 | } |
| 498 | |
| 499 | /** |
| 500 | * Check for errors in the parsed body. |
| 501 | */ |
| 502 | if ( isset( $parsed_data->error ) ) { |
| 503 | return new WP_Error( |
| 504 | 'remote_error', |
| 505 | __( 'It looks like the WordPress site URL is incorrectly configured. Please check it in your widget settings.', 'jetpack' ), |
| 506 | $parsed_data->error |
| 507 | ); |
| 508 | } |
| 509 | |
| 510 | /** |
| 511 | * No errors found, return parsed data. |
| 512 | */ |
| 513 | return $parsed_data; |
| 514 | } |
| 515 | |
| 516 | /** |
| 517 | * Fetch site information from the WordPress public API |
| 518 | * |
| 519 | * @param string $site URL of the site to fetch the information for. |
| 520 | * |
| 521 | * @return array|WP_Error |
| 522 | */ |
| 523 | public function fetch_site_info( $site ) { |
| 524 | |
| 525 | $response = $this->fetch_service_endpoint( sprintf( '/sites/%s', rawurlencode( $site ) ) ); |
| 526 | |
| 527 | return $response; |
| 528 | } |
| 529 | |
| 530 | /** |
| 531 | * Parse external API response from the site info call and handle errors if they occur. |
| 532 | * |
| 533 | * @param array|WP_Error $service_response The raw response to be parsed. |
| 534 | * |
| 535 | * @return array|WP_Error |
| 536 | */ |
| 537 | public function parse_site_info_response( $service_response ) { |
| 538 | |
| 539 | /** |
| 540 | * If the service returned an error, we pass it on. |
| 541 | */ |
| 542 | if ( is_wp_error( $service_response ) ) { |
| 543 | return $service_response; |
| 544 | } |
| 545 | |
| 546 | /** |
| 547 | * Check if the service returned proper site information. |
| 548 | */ |
| 549 | if ( ! isset( $service_response->ID ) ) { |
| 550 | return new WP_Error( |
| 551 | 'no_site_info', |
| 552 | __( 'Invalid site information returned from remote.', 'jetpack' ), |
| 553 | 'No site ID present in the response.' |
| 554 | ); |
| 555 | } |
| 556 | |
| 557 | return $service_response; |
| 558 | } |
| 559 | |
| 560 | /** |
| 561 | * Fetch list of posts from the WordPress public API. |
| 562 | * |
| 563 | * @param int $site_id The site to fetch the posts for. |
| 564 | * |
| 565 | * @return array|WP_Error |
| 566 | */ |
| 567 | public function fetch_posts_for_site( $site_id ) { |
| 568 | |
| 569 | $response = $this->fetch_service_endpoint( |
| 570 | sprintf( |
| 571 | '/sites/%1$d/posts/%2$s', |
| 572 | $site_id, |
| 573 | /** |
| 574 | * Filters the parameters used to fetch for posts in the Display Posts Widget. |
| 575 | * |
| 576 | * @see https://developer.wordpress.com/docs/api/1.1/get/sites/%24site/posts/ |
| 577 | * |
| 578 | * @module widgets |
| 579 | * |
| 580 | * @since 3.6.0 |
| 581 | * |
| 582 | * @param string $args Extra parameters to filter posts returned from the WordPress.com REST API. |
| 583 | */ |
| 584 | apply_filters( 'jetpack_display_posts_widget_posts_params', '?fields=id,title,excerpt,URL,featured_image' ) |
| 585 | ) |
| 586 | ); |
| 587 | |
| 588 | return $response; |
| 589 | } |
| 590 | |
| 591 | /** |
| 592 | * Parse external API response from the posts list request and handle errors if any occur. |
| 593 | * |
| 594 | * @param object|WP_Error $service_response The raw response to be parsed. |
| 595 | * |
| 596 | * @return array|WP_Error |
| 597 | */ |
| 598 | public function parse_posts_response( $service_response ) { |
| 599 | |
| 600 | /** |
| 601 | * If the service returned an error, we pass it on. |
| 602 | */ |
| 603 | if ( is_wp_error( $service_response ) ) { |
| 604 | return $service_response; |
| 605 | } |
| 606 | |
| 607 | /** |
| 608 | * Check if the service returned proper posts array. |
| 609 | */ |
| 610 | if ( ! isset( $service_response->posts ) || ! is_array( $service_response->posts ) ) { |
| 611 | return new WP_Error( |
| 612 | 'no_posts', |
| 613 | __( 'No posts data returned by remote.', 'jetpack' ), |
| 614 | 'No posts information set in the returned data.' |
| 615 | ); |
| 616 | } |
| 617 | |
| 618 | /** |
| 619 | * Format the posts to preserve storage space. |
| 620 | */ |
| 621 | |
| 622 | return $this->format_posts_for_storage( $service_response ); |
| 623 | } |
| 624 | |
| 625 | /** |
| 626 | * Format the posts for better storage. Drop all the data that is not used. |
| 627 | * |
| 628 | * @param object $parsed_data Array of posts returned by the APIs. |
| 629 | * |
| 630 | * @return array Formatted posts or an empty array if no posts were found. |
| 631 | */ |
| 632 | public function format_posts_for_storage( $parsed_data ) { |
| 633 | |
| 634 | $formatted_posts = array(); |
| 635 | |
| 636 | /** |
| 637 | * Only go through the posts list if we have valid posts array. |
| 638 | */ |
| 639 | if ( isset( $parsed_data->posts ) && is_array( $parsed_data->posts ) ) { |
| 640 | |
| 641 | /** |
| 642 | * Loop through all the posts and format them appropriately. |
| 643 | */ |
| 644 | foreach ( $parsed_data->posts as $single_post ) { |
| 645 | |
| 646 | $prepared_post = array( |
| 647 | 'title' => $single_post->title ? $single_post->title : '', |
| 648 | 'excerpt' => $single_post->excerpt ? $single_post->excerpt : '', |
| 649 | 'featured_image' => $single_post->featured_image ? $single_post->featured_image : '', |
| 650 | 'url' => $single_post->URL, // phpcs:ignore WordPress.NamingConventions.ValidVariableName.UsedPropertyNotSnakeCase |
| 651 | ); |
| 652 | |
| 653 | /** |
| 654 | * Append the formatted post to the results. |
| 655 | */ |
| 656 | $formatted_posts[] = $prepared_post; |
| 657 | } |
| 658 | } |
| 659 | |
| 660 | return $formatted_posts; |
| 661 | } |
| 662 | |
| 663 | /** |
| 664 | * Fetch site information and posts list for a site. |
| 665 | * |
| 666 | * @param string $site Site to fetch the data for. |
| 667 | * @param array $original_data Optional original data to updated. |
| 668 | * |
| 669 | * @param bool $site_data_only Fetch only site information, skip posts list. |
| 670 | * |
| 671 | * @return array Updated or new data. |
| 672 | */ |
| 673 | public function fetch_blog_data( $site, $original_data = array(), $site_data_only = false ) { |
| 674 | |
| 675 | /** |
| 676 | * If no optional data is supplied, initialize a new structure |
| 677 | */ |
| 678 | if ( ! empty( $original_data ) && is_array( $original_data ) ) { |
| 679 | $widget_data = $original_data; |
| 680 | } else { |
| 681 | $widget_data = array( |
| 682 | 'site_info' => array( |
| 683 | 'last_check' => null, |
| 684 | 'last_update' => null, |
| 685 | 'error' => null, |
| 686 | 'data' => array(), |
| 687 | ), |
| 688 | 'posts' => array( |
| 689 | 'last_check' => null, |
| 690 | 'last_update' => null, |
| 691 | 'error' => null, |
| 692 | 'data' => array(), |
| 693 | ), |
| 694 | ); |
| 695 | } |
| 696 | |
| 697 | /** |
| 698 | * Update check time and fetch site information. |
| 699 | */ |
| 700 | $widget_data['site_info']['last_check'] = time(); |
| 701 | |
| 702 | $site_info_raw_data = $this->fetch_site_info( $site ); |
| 703 | $site_info_parsed_data = $this->parse_site_info_response( $site_info_raw_data ); |
| 704 | |
| 705 | /** |
| 706 | * If there is an error with the fetched site info, save the error and update the checked time. |
| 707 | */ |
| 708 | if ( is_wp_error( $site_info_parsed_data ) ) { |
| 709 | $widget_data['site_info']['error'] = $site_info_parsed_data; |
| 710 | |
| 711 | return $widget_data; |
| 712 | } else { |
| 713 | /** |
| 714 | * If data is fetched successfully, update the data and set the proper time. |
| 715 | * |
| 716 | * Data is only updated if we have valid results. This is done this way so we can show |
| 717 | * something if external service is down. |
| 718 | */ |
| 719 | $widget_data['site_info']['last_update'] = time(); |
| 720 | $widget_data['site_info']['data'] = $site_info_parsed_data; |
| 721 | $widget_data['site_info']['error'] = null; |
| 722 | } |
| 723 | |
| 724 | /** |
| 725 | * If only site data is needed, return it here, don't fetch posts data. |
| 726 | */ |
| 727 | if ( true === $site_data_only ) { |
| 728 | return $widget_data; |
| 729 | } |
| 730 | |
| 731 | /** |
| 732 | * Update check time and fetch posts list. |
| 733 | */ |
| 734 | $widget_data['posts']['last_check'] = time(); |
| 735 | |
| 736 | $site_posts_raw_data = $this->fetch_posts_for_site( $site_info_parsed_data->ID ); |
| 737 | $site_posts_parsed_data = $this->parse_posts_response( $site_posts_raw_data ); |
| 738 | |
| 739 | /** |
| 740 | * If there is an error with the fetched posts, save the error and update the checked time. |
| 741 | */ |
| 742 | if ( is_wp_error( $site_posts_parsed_data ) ) { |
| 743 | $widget_data['posts']['error'] = $site_posts_parsed_data; |
| 744 | |
| 745 | return $widget_data; |
| 746 | } else { |
| 747 | /** |
| 748 | * If data is fetched successfully, update the data and set the proper time. |
| 749 | * |
| 750 | * Data is only updated if we have valid results. This is done this way so we can show |
| 751 | * something if external service is down. |
| 752 | */ |
| 753 | $widget_data['posts']['last_update'] = time(); |
| 754 | $widget_data['posts']['data'] = $site_posts_parsed_data; |
| 755 | $widget_data['posts']['error'] = null; |
| 756 | } |
| 757 | |
| 758 | return $widget_data; |
| 759 | } |
| 760 | |
| 761 | /** |
| 762 | * Scan and extract first error from blog data array. |
| 763 | * |
| 764 | * @param array|WP_Error $blog_data Blog data to scan for errors. |
| 765 | * |
| 766 | * @return string First error message found |
| 767 | */ |
| 768 | public function extract_errors_from_blog_data( $blog_data ) { |
| 769 | |
| 770 | $errors = array( |
| 771 | 'message' => '', |
| 772 | 'debug' => '', |
| 773 | 'where' => '', |
| 774 | ); |
| 775 | |
| 776 | /** |
| 777 | * When the cache result is an error. Usually when the cache is empty. |
| 778 | * This is not an error case for now. |
| 779 | */ |
| 780 | if ( is_wp_error( $blog_data ) ) { |
| 781 | return $errors; |
| 782 | } |
| 783 | |
| 784 | /** |
| 785 | * Loop through `site_info` and `posts` keys of $blog_data. |
| 786 | */ |
| 787 | foreach ( array( 'site_info', 'posts' ) as $info_key ) { |
| 788 | |
| 789 | /** |
| 790 | * Contains information on which stage the error ocurred. |
| 791 | */ |
| 792 | $errors['where'] = $info_key; |
| 793 | |
| 794 | /** |
| 795 | * If an error is set, we want to check it for usable messages. |
| 796 | */ |
| 797 | if ( isset( $blog_data[ $info_key ]['error'] ) && ! empty( $blog_data[ $info_key ]['error'] ) ) { |
| 798 | |
| 799 | /** |
| 800 | * Extract error message from the error, if possible. |
| 801 | */ |
| 802 | if ( is_wp_error( $blog_data[ $info_key ]['error'] ) ) { |
| 803 | /** |
| 804 | * In the case of WP_Error we want to have the error message |
| 805 | * and the debug information available. |
| 806 | */ |
| 807 | $error_messages = $blog_data[ $info_key ]['error']->get_error_messages(); |
| 808 | $errors['message'] = reset( $error_messages ); |
| 809 | |
| 810 | $extra_data = $blog_data[ $info_key ]['error']->get_error_data(); |
| 811 | if ( is_array( $extra_data ) ) { |
| 812 | $errors['debug'] = implode( '; ', $extra_data ); |
| 813 | } else { |
| 814 | $errors['debug'] = $extra_data; |
| 815 | } |
| 816 | |
| 817 | break; |
| 818 | } elseif ( is_array( $blog_data[ $info_key ]['error'] ) ) { |
| 819 | /** |
| 820 | * In this case we don't have debug information, because |
| 821 | * we have no way to know the format. The widget works with |
| 822 | * WP_Error objects only. |
| 823 | */ |
| 824 | $errors['message'] = reset( $blog_data[ $info_key ]['error'] ); |
| 825 | break; |
| 826 | } |
| 827 | |
| 828 | /** |
| 829 | * We do nothing if no usable error is found. |
| 830 | */ |
| 831 | } |
| 832 | } |
| 833 | |
| 834 | return $errors; |
| 835 | } |
| 836 | |
| 837 | /** |
| 838 | * This is just to make method mocks in the unit tests easier. |
| 839 | * |
| 840 | * @param string $url The URL to fetch. |
| 841 | * @param array $args Optional. Request arguments. |
| 842 | * |
| 843 | * @return array|WP_Error |
| 844 | * |
| 845 | * @codeCoverageIgnore |
| 846 | */ |
| 847 | public function wp_wp_remote_get( $url, $args = array() ) { |
| 848 | return wp_remote_get( $url, $args ); |
| 849 | } |
| 850 | } |
| 851 |