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| 1 | <?php |
| 2 | /** |
| 3 | * Fetches and store the list of Jetpack products available in WPCOM |
| 4 | * |
| 5 | * @package automattic/my-jetpack |
| 6 | */ |
| 7 | |
| 8 | namespace Automattic\Jetpack\My_Jetpack; |
| 9 | |
| 10 | use Automattic\Jetpack\Connection\Client; |
| 11 | use Automattic\Jetpack\Connection\Manager as Connection_Manager; |
| 12 | use Automattic\Jetpack\Current_Plan; |
| 13 | use Automattic\Jetpack\Status\Visitor; |
| 14 | use Jetpack_Options; |
| 15 | use WP_Error; |
| 16 | /** |
| 17 | * Stores the list of products available for purchase in WPCOM |
| 18 | */ |
| 19 | class Wpcom_Products { |
| 20 | |
| 21 | /** |
| 22 | * The meta name used to store the cache date |
| 23 | * |
| 24 | * @var string |
| 25 | */ |
| 26 | const CACHE_DATE_META_NAME = 'my-jetpack-cache-date'; |
| 27 | |
| 28 | /** |
| 29 | * The meta name used to store the cache |
| 30 | * |
| 31 | * @var string |
| 32 | */ |
| 33 | const CACHE_META_NAME = 'my-jetpack-cache'; |
| 34 | |
| 35 | const CACHE_CHECK_HASH_NAME = 'my-jetpack-wpcom-product-check-hash'; |
| 36 | |
| 37 | const MY_JETPACK_PURCHASES_TRANSIENT_KEY = 'my-jetpack-purchases'; |
| 38 | |
| 39 | /** |
| 40 | * How long, in seconds, a purchases lookup is reused before WPCOM is asked again |
| 41 | * |
| 42 | * @var int |
| 43 | */ |
| 44 | const MY_JETPACK_PURCHASES_CACHE_DURATION = 5; |
| 45 | |
| 46 | const MY_JETPACK_PLAN_REFRESHED_TRANSIENT_KEY = 'my-jetpack-plan-refreshed'; |
| 47 | |
| 48 | /** |
| 49 | * How long, in seconds, a plan refresh from WPCOM is reused before a reload asks again |
| 50 | * |
| 51 | * @var int |
| 52 | */ |
| 53 | const MY_JETPACK_PLAN_REFRESH_CACHE_DURATION = 15; |
| 54 | |
| 55 | /** |
| 56 | * How long, in seconds, a failed WPCOM request answers later callers before it is retried |
| 57 | * |
| 58 | * @var int |
| 59 | */ |
| 60 | const WPCOM_REQUEST_FAILURE_CACHE_DURATION = 5; |
| 61 | |
| 62 | /** |
| 63 | * The request label the site purchases lookup records its failures under |
| 64 | * |
| 65 | * @var string |
| 66 | */ |
| 67 | const PURCHASES_REQUEST_LABEL = 'get_site_current_purchases'; |
| 68 | |
| 69 | /** |
| 70 | * Store the data on failed WPCOM requests, each with the time it stops answering. |
| 71 | * |
| 72 | * @var array |
| 73 | */ |
| 74 | private static $wpcom_request_failures = array(); |
| 75 | |
| 76 | /** |
| 77 | * A successful purchases lookup, kept so one WPCOM request serves a whole render |
| 78 | * even when the transient write does not retain (e.g. an object cache evicting under load) |
| 79 | * |
| 80 | * @var mixed |
| 81 | */ |
| 82 | private static $site_purchases = null; |
| 83 | |
| 84 | /** |
| 85 | * Unix time at which the memo above stops being used |
| 86 | * |
| 87 | * @var int |
| 88 | */ |
| 89 | private static $site_purchases_expires = 0; |
| 90 | |
| 91 | /** |
| 92 | * Fetches the list of products from WPCOM |
| 93 | * |
| 94 | * @return Object|WP_Error |
| 95 | */ |
| 96 | private static function get_products_from_wpcom() { |
| 97 | $connection = new Connection_Manager(); |
| 98 | $blog_id = \Jetpack_Options::get_option( 'id' ); |
| 99 | $ip = ( new Visitor() )->get_ip( true ); |
| 100 | $headers = array( |
| 101 | 'X-Forwarded-For' => $ip, |
| 102 | ); |
| 103 | |
| 104 | if ( $blog_id ) { |
| 105 | $request_label = 'get_products_from_wpcom_blog_' . $blog_id; |
| 106 | $request_failure = static::get_request_failure( $request_label ); |
| 107 | if ( null !== $request_failure ) { |
| 108 | return $request_failure; |
| 109 | } |
| 110 | |
| 111 | // If has a blog id, use connected endpoint. |
| 112 | $endpoint = sprintf( '/sites/%d/products/?_locale=%s&type=jetpack', $blog_id, get_user_locale() ); |
| 113 | |
| 114 | // If available in the user data, set the user's currency as one of the params |
| 115 | if ( $connection->is_user_connected() ) { |
| 116 | $user_details = $connection->get_connected_user_data(); |
| 117 | if ( ! empty( $user_details['user_currency'] ) && $user_details['user_currency'] !== 'USD' ) { |
| 118 | $endpoint .= sprintf( '¤cy=%s', $user_details['user_currency'] ); |
| 119 | } |
| 120 | } |
| 121 | |
| 122 | $wpcom_request = Client::wpcom_json_api_request_as_blog( |
| 123 | $endpoint, |
| 124 | '1.1', |
| 125 | array( |
| 126 | 'method' => 'GET', |
| 127 | 'headers' => $headers, |
| 128 | ) |
| 129 | ); |
| 130 | } else { |
| 131 | $request_label = 'get_products_from_wpcom'; |
| 132 | $request_failure = static::get_request_failure( $request_label ); |
| 133 | if ( null !== $request_failure ) { |
| 134 | return $request_failure; |
| 135 | } |
| 136 | |
| 137 | $endpoint = 'https://public-api.wordpress.com/rest/v1.1/products?locale=' . get_user_locale() . '&type=jetpack'; |
| 138 | |
| 139 | $wpcom_request = wp_remote_get( |
| 140 | esc_url_raw( $endpoint ), |
| 141 | array( |
| 142 | 'headers' => $headers, |
| 143 | ) |
| 144 | ); |
| 145 | } |
| 146 | |
| 147 | $response_code = wp_remote_retrieve_response_code( $wpcom_request ); |
| 148 | |
| 149 | if ( 200 === $response_code ) { |
| 150 | $products = json_decode( wp_remote_retrieve_body( $wpcom_request ) ); |
| 151 | if ( is_object( $products ) ) { |
| 152 | return $products; |
| 153 | } |
| 154 | $error = new WP_Error( 'invalid_wpcom_products', __( 'Unable to read the products list from WordPress.com', 'jetpack-my-jetpack' ) ); |
| 155 | static::set_request_failure( $request_label, $error ); |
| 156 | return $error; |
| 157 | } else { |
| 158 | $error = new WP_Error( |
| 159 | 'failed_to_fetch_wpcom_products', |
| 160 | esc_html__( 'Unable to fetch the products list from WordPress.com', 'jetpack-my-jetpack' ), |
| 161 | array( 'status' => $response_code ) |
| 162 | ); |
| 163 | static::set_request_failure( $request_label, $error ); |
| 164 | return $error; |
| 165 | } |
| 166 | } |
| 167 | |
| 168 | /** |
| 169 | * Super unintelligent hash string that can help us reset the cache after connection changes |
| 170 | * This is important because the currency can change after a user connects depending on what is set in their profile |
| 171 | * |
| 172 | * @return string |
| 173 | */ |
| 174 | private static function build_check_hash() { |
| 175 | static $has_user_data_fetch_error = false; |
| 176 | |
| 177 | $hash_string = 'check_hash_' . Jetpack_Options::get_option( 'id' ) . '_' . get_user_locale(); |
| 178 | $connection = new Connection_Manager(); |
| 179 | |
| 180 | if ( $connection->is_connected() ) { |
| 181 | $hash_string .= 'site_connected_'; |
| 182 | } |
| 183 | |
| 184 | if ( $connection->is_user_connected() ) { |
| 185 | $hash_string .= 'user_connected'; |
| 186 | // Add the user's currency |
| 187 | $user_details = $has_user_data_fetch_error ? false : $connection->get_connected_user_data(); |
| 188 | |
| 189 | if ( $user_details === false ) { |
| 190 | $has_user_data_fetch_error = true; |
| 191 | } elseif ( ! empty( $user_details['user_currency'] ) ) { |
| 192 | $hash_string .= '_' . $user_details['user_currency']; |
| 193 | } |
| 194 | } |
| 195 | |
| 196 | return md5( $hash_string ); |
| 197 | } |
| 198 | |
| 199 | /** |
| 200 | * Update the cache with new information retrieved from WPCOM |
| 201 | * |
| 202 | * We store one cache for each user, as the information is internationalized based on user preferences |
| 203 | * Also, the currency is based on the user IP address |
| 204 | * |
| 205 | * @param Object $products_list The products list as received from WPCOM. |
| 206 | * @return bool |
| 207 | */ |
| 208 | private static function update_cache( $products_list ) { |
| 209 | update_user_meta( get_current_user_id(), self::CACHE_DATE_META_NAME, time() ); |
| 210 | update_user_meta( get_current_user_id(), self::CACHE_CHECK_HASH_NAME, self::build_check_hash() ); |
| 211 | return update_user_meta( get_current_user_id(), self::CACHE_META_NAME, $products_list ); |
| 212 | } |
| 213 | |
| 214 | /** |
| 215 | * Checks if the cache is old, meaning we need to fetch new data from WPCOM |
| 216 | */ |
| 217 | private static function is_cache_old() { |
| 218 | if ( empty( self::get_products_from_cache() ) ) { |
| 219 | return true; |
| 220 | } |
| 221 | |
| 222 | // This allows the cache to reset after the site or user connects/ disconnects |
| 223 | $check_hash = get_user_meta( get_current_user_id(), self::CACHE_CHECK_HASH_NAME, true ); |
| 224 | if ( $check_hash !== self::build_check_hash() ) { |
| 225 | return true; |
| 226 | } |
| 227 | |
| 228 | $cache_date = get_user_meta( get_current_user_id(), self::CACHE_DATE_META_NAME, true ); |
| 229 | return time() - (int) $cache_date > 5 * MINUTE_IN_SECONDS; |
| 230 | } |
| 231 | |
| 232 | /** |
| 233 | * Gets the product list from the user cache |
| 234 | */ |
| 235 | private static function get_products_from_cache() { |
| 236 | return get_user_meta( get_current_user_id(), self::CACHE_META_NAME, true ); |
| 237 | } |
| 238 | |
| 239 | /** |
| 240 | * Gets the product list |
| 241 | * |
| 242 | * Attempts to retrieve the products list from the user cache if cache is not too old. |
| 243 | * If cache is old, it will attempt to fetch information from WPCOM. If it fails, we return what we have in cache, if anything, otherwise we return an error. |
| 244 | * |
| 245 | * @param bool $skip_cache If true it will ignore the cache and attempt to fetch fresh information from WPCOM. |
| 246 | * |
| 247 | * @return Object|WP_Error |
| 248 | */ |
| 249 | public static function get_products( $skip_cache = false ) { |
| 250 | // This is only available for logged in users. |
| 251 | if ( ! get_current_user_id() ) { |
| 252 | return null; |
| 253 | } |
| 254 | if ( ! self::is_cache_old() && ! $skip_cache ) { |
| 255 | return self::get_products_from_cache(); |
| 256 | } |
| 257 | |
| 258 | $products = self::get_products_from_wpcom(); |
| 259 | if ( is_wp_error( $products ) ) { |
| 260 | // Let's see if we have it cached. |
| 261 | $cached = self::get_products_from_cache(); |
| 262 | if ( is_object( $cached ) ) { |
| 263 | // Pro requires confirmed availability; existing offers retain their cached behavior. |
| 264 | $cached = clone $cached; |
| 265 | foreach ( $cached as $slug => $product ) { |
| 266 | if ( str_starts_with( $slug, 'jetpack_pro_' ) && is_object( $product ) ) { |
| 267 | $cached->$slug = clone $product; |
| 268 | $cached->$slug->available = false; |
| 269 | } |
| 270 | } |
| 271 | return $cached; |
| 272 | } else { |
| 273 | return $products; |
| 274 | } |
| 275 | } |
| 276 | |
| 277 | self::update_cache( $products ); |
| 278 | return $products; |
| 279 | } |
| 280 | |
| 281 | /** |
| 282 | * Get one product |
| 283 | * |
| 284 | * @param string $product_slug The product slug. |
| 285 | * @param bool $renew_cache A flag to force the cache to be renewed. |
| 286 | * |
| 287 | * @return ?Object The product details if found |
| 288 | */ |
| 289 | public static function get_product( $product_slug, $renew_cache = false ) { |
| 290 | $products = self::get_products( $renew_cache ); |
| 291 | if ( ! empty( $products->$product_slug ) ) { |
| 292 | return $products->$product_slug; |
| 293 | } |
| 294 | } |
| 295 | |
| 296 | /** |
| 297 | * Get only the product currency code and price in an array |
| 298 | * |
| 299 | * @param string $product_slug The product slug. |
| 300 | * |
| 301 | * @return array An array with currency_code and full_price. Empty array if product not found. |
| 302 | */ |
| 303 | public static function get_product_pricing( $product_slug ) { |
| 304 | $product = self::get_product( $product_slug ); |
| 305 | if ( empty( $product ) ) { |
| 306 | return array(); |
| 307 | } |
| 308 | |
| 309 | $cost = $product->cost; |
| 310 | $discount_price = $cost; |
| 311 | $is_introductory_offer = false; |
| 312 | $introductory_offer = null; |
| 313 | |
| 314 | // Get/compute the discounted price. |
| 315 | if ( isset( $product->introductory_offer->cost_per_interval ) ) { |
| 316 | $discount_price = $product->introductory_offer->cost_per_interval; |
| 317 | $is_introductory_offer = true; |
| 318 | $introductory_offer = $product->introductory_offer; |
| 319 | } |
| 320 | |
| 321 | $pricing = array( |
| 322 | 'currency_code' => $product->currency_code, |
| 323 | 'full_price' => $cost, |
| 324 | 'discount_price' => $discount_price, |
| 325 | 'is_introductory_offer' => $is_introductory_offer, |
| 326 | 'introductory_offer' => $introductory_offer, |
| 327 | 'product_term' => $product->product_term, |
| 328 | ); |
| 329 | |
| 330 | return self::populate_with_discount( $product, $pricing, $discount_price ); |
| 331 | } |
| 332 | |
| 333 | /** |
| 334 | * Populate the pricing array with the discount information. |
| 335 | * |
| 336 | * @param object $product - The product object. |
| 337 | * @param array $pricing - The pricing array. |
| 338 | * @param float $price - The price to be discounted. |
| 339 | * @return array The pricing array with the discount information. |
| 340 | */ |
| 341 | public static function populate_with_discount( $product, $pricing, $price ) { |
| 342 | // Check whether the product has a coupon. |
| 343 | if ( ! isset( $product->sale_coupon ) ) { |
| 344 | return $pricing; |
| 345 | } |
| 346 | |
| 347 | // Check whether it is still valid. |
| 348 | $coupon = $product->sale_coupon; |
| 349 | $coupon_start_date = strtotime( $coupon->start_date ); |
| 350 | $coupon_expires = strtotime( $coupon->expires ); |
| 351 | if ( $coupon_start_date > time() || $coupon_expires < time() ) { |
| 352 | return $pricing; |
| 353 | } |
| 354 | |
| 355 | $coupon_discount = intval( $coupon->discount ); |
| 356 | |
| 357 | // Populate response with coupon discount. |
| 358 | $pricing['coupon_discount'] = $coupon_discount; |
| 359 | |
| 360 | // Apply coupon discount to the price. |
| 361 | $pricing['discount_price'] = $price * ( 100 - $coupon_discount ) / 100; |
| 362 | |
| 363 | return $pricing; |
| 364 | } |
| 365 | |
| 366 | /** |
| 367 | * Gets the site purchases from WPCOM. |
| 368 | * |
| 369 | * @return Object|WP_Error |
| 370 | */ |
| 371 | public static function get_site_current_purchases() { |
| 372 | // Read the cache first, so a memo can never outrank a warm lookup. |
| 373 | $stored_purchases = get_transient( self::MY_JETPACK_PURCHASES_TRANSIENT_KEY ); |
| 374 | if ( $stored_purchases !== false ) { |
| 375 | return $stored_purchases; |
| 376 | } |
| 377 | |
| 378 | /* |
| 379 | * Checked after the transient so it can never outrank a warm cache, but kept so a |
| 380 | * dashboard render still makes a single WPCOM request when the transient write is dropped. |
| 381 | */ |
| 382 | if ( self::$site_purchases !== null && time() < self::$site_purchases_expires ) { |
| 383 | return self::$site_purchases; |
| 384 | } |
| 385 | |
| 386 | $request_failure = static::get_request_failure( self::PURCHASES_REQUEST_LABEL ); |
| 387 | if ( null !== $request_failure ) { |
| 388 | return $request_failure; |
| 389 | } |
| 390 | |
| 391 | $site_id = Jetpack_Options::get_option( 'id' ); |
| 392 | |
| 393 | $response = Client::wpcom_json_api_request_as_blog( |
| 394 | sprintf( '/upgrades?site=%d', $site_id ), |
| 395 | '1.2', |
| 396 | array( |
| 397 | 'method' => 'GET', |
| 398 | ) |
| 399 | ); |
| 400 | if ( 200 !== wp_remote_retrieve_response_code( $response ) ) { |
| 401 | $error = new WP_Error( 'purchases_state_fetch_failed' ); |
| 402 | static::set_request_failure( self::PURCHASES_REQUEST_LABEL, $error ); |
| 403 | return $error; |
| 404 | } |
| 405 | |
| 406 | $body = wp_remote_retrieve_body( $response ); |
| 407 | $purchases = json_decode( $body ); |
| 408 | // Set short transient to help with repeated lookups on the same page load |
| 409 | set_transient( self::MY_JETPACK_PURCHASES_TRANSIENT_KEY, $purchases, self::MY_JETPACK_PURCHASES_CACHE_DURATION ); |
| 410 | |
| 411 | self::$site_purchases = $purchases; |
| 412 | self::$site_purchases_expires = time() + self::MY_JETPACK_PURCHASES_CACHE_DURATION; |
| 413 | |
| 414 | return $purchases; |
| 415 | } |
| 416 | |
| 417 | /** |
| 418 | * Gets the site's currently active "plan" (bundle). |
| 419 | * |
| 420 | * @param bool $reload Whether to refresh data from wpcom or not. |
| 421 | * @return array |
| 422 | */ |
| 423 | public static function get_site_current_plan( $reload = false ) { |
| 424 | static $reloaded_already = false; |
| 425 | |
| 426 | // The page render and the REST requests it fires all reload, so share one refresh between them. |
| 427 | if ( $reload && ! $reloaded_already ) { |
| 428 | // Without a site ID nothing can refresh, so don't start the window until one exists. |
| 429 | if ( ! get_transient( self::MY_JETPACK_PLAN_REFRESHED_TRANSIENT_KEY ) && Connection_Manager::get_site_id( true ) ) { |
| 430 | Current_Plan::refresh_from_wpcom(); |
| 431 | set_transient( self::MY_JETPACK_PLAN_REFRESHED_TRANSIENT_KEY, 1, self::MY_JETPACK_PLAN_REFRESH_CACHE_DURATION ); |
| 432 | } |
| 433 | $reloaded_already = true; |
| 434 | } |
| 435 | |
| 436 | return Current_Plan::get(); |
| 437 | } |
| 438 | |
| 439 | /** |
| 440 | * Reset the request failures to retry the API requests. |
| 441 | * |
| 442 | * @return void |
| 443 | */ |
| 444 | public static function reset_request_failures() { |
| 445 | static::$wpcom_request_failures = array(); |
| 446 | } |
| 447 | |
| 448 | /** |
| 449 | * Forget the cached site purchases — the in-process memo, the memoized failure, and the |
| 450 | * transient — so the next call asks WPCOM again. |
| 451 | * |
| 452 | * @return void |
| 453 | */ |
| 454 | public static function reset_purchases_cache() { |
| 455 | self::$site_purchases = null; |
| 456 | self::$site_purchases_expires = 0; |
| 457 | unset( static::$wpcom_request_failures[ self::PURCHASES_REQUEST_LABEL ] ); |
| 458 | delete_transient( self::MY_JETPACK_PURCHASES_TRANSIENT_KEY ); |
| 459 | } |
| 460 | |
| 461 | /** |
| 462 | * Record the request failure to prevent repeated requests. |
| 463 | * |
| 464 | * @param string $request_label The request label. |
| 465 | * @param WP_Error $error The error. |
| 466 | * |
| 467 | * @return void |
| 468 | */ |
| 469 | private static function set_request_failure( $request_label, WP_Error $error ) { |
| 470 | static::$wpcom_request_failures[ $request_label ] = array( |
| 471 | 'error' => $error, |
| 472 | 'expires' => time() + self::WPCOM_REQUEST_FAILURE_CACHE_DURATION, |
| 473 | ); |
| 474 | } |
| 475 | |
| 476 | /** |
| 477 | * Get the pre-saved request failure if exists. |
| 478 | * |
| 479 | * @param string $request_label The request label. |
| 480 | * |
| 481 | * @return null|WP_Error |
| 482 | */ |
| 483 | private static function get_request_failure( $request_label ) { |
| 484 | if ( ! isset( static::$wpcom_request_failures[ $request_label ] ) ) { |
| 485 | return null; |
| 486 | } |
| 487 | |
| 488 | // Expire rather than answer for the life of the process, which can outlast the outage. |
| 489 | if ( time() >= static::$wpcom_request_failures[ $request_label ]['expires'] ) { |
| 490 | unset( static::$wpcom_request_failures[ $request_label ] ); |
| 491 | return null; |
| 492 | } |
| 493 | |
| 494 | return static::$wpcom_request_failures[ $request_label ]['error']; |
| 495 | } |
| 496 | } |