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| 1 | <?php |
| 2 | /** |
| 3 | * Class WPCom_Themes_Api. |
| 4 | * Retrieves themes from the WordPress.com themes API. |
| 5 | * |
| 6 | * @package automattic/jetpack-mu-wpcom |
| 7 | */ |
| 8 | |
| 9 | /** |
| 10 | * Fetches themes from the WordPress.com themes API. |
| 11 | */ |
| 12 | class WPCom_Themes_Api { |
| 13 | |
| 14 | /** |
| 15 | * The URL of the WordPress.com themes API. |
| 16 | */ |
| 17 | const WP_COM_THEMES_API_URL = 'https://public-api.wordpress.com/wpcom/v2/themes?_envelope=1&page=1&number=1000'; |
| 18 | |
| 19 | /** |
| 20 | * The URL of the WordPress.com theme API. |
| 21 | */ |
| 22 | const WP_COM_THEME_API_URL = 'https://public-api.wordpress.com/rest/v1.2/themes/%s?http_envelope=1'; |
| 23 | |
| 24 | /** |
| 25 | * The URL listing the partner tier, which is the one tier that is sold per theme. |
| 26 | */ |
| 27 | const WP_COM_PARTNER_THEMES_API_URL = 'https://public-api.wordpress.com/rest/v1.2/themes?http_envelope=1&tier=partner&number=500'; |
| 28 | |
| 29 | /** |
| 30 | * WordPress.org's themes API, which can look several themes up in one request. |
| 31 | */ |
| 32 | const WP_ORG_THEMES_API_URL = 'https://api.wordpress.org/themes/info/1.2/'; |
| 33 | |
| 34 | /** |
| 35 | * The most themes WordPress.org looks up in one request. |
| 36 | */ |
| 37 | const WP_ORG_BATCH_SIZE = 100; |
| 38 | |
| 39 | /** |
| 40 | * Cache handler. |
| 41 | * |
| 42 | * @var WPCom_Themes_Cache $cache |
| 43 | */ |
| 44 | private WPCom_Themes_Cache $cache; |
| 45 | |
| 46 | /** |
| 47 | * Class constructor. |
| 48 | * |
| 49 | * @param WPCom_Themes_Cache $cache Cache handler. |
| 50 | */ |
| 51 | public function __construct( WPCom_Themes_Cache $cache ) { |
| 52 | $this->cache = $cache; |
| 53 | } |
| 54 | |
| 55 | /** |
| 56 | * Returns an array of themes fetched from the WordPress.com themes API. |
| 57 | * Caching is used to avoid fetching the themes on every request. |
| 58 | * |
| 59 | * @param string $cache_key Key of the cache where the API response will be cached. |
| 60 | * @param array $params Query params to pass to the API URL. |
| 61 | * |
| 62 | * @return array<stdClass> An array with all the WPCom themes. |
| 63 | */ |
| 64 | protected function fetch_themes( string $cache_key, array $params = array() ): array { |
| 65 | $url = add_query_arg( $params, self::WP_COM_THEMES_API_URL ); |
| 66 | |
| 67 | return $this->cache->run_cached( |
| 68 | $cache_key, |
| 69 | function () use ( $url ) { |
| 70 | $body = $this->handle_request( $url ); |
| 71 | |
| 72 | // Null, not an empty array: run_cached() stores anything else. |
| 73 | return isset( $body->themes ) && is_array( $body->themes ) ? $body->themes : null; |
| 74 | } |
| 75 | ) ?? array(); |
| 76 | } |
| 77 | |
| 78 | /** |
| 79 | * Fetches the response from the given URL. |
| 80 | * |
| 81 | * @param string $url URL to fetch. |
| 82 | * |
| 83 | * @return ?stdClass Response body. |
| 84 | */ |
| 85 | protected function handle_request( string $url ): ?stdClass { |
| 86 | $response = wp_remote_get( esc_url_raw( $url ) ); |
| 87 | if ( 200 === wp_remote_retrieve_response_code( $response ) ) { |
| 88 | $body_json = json_decode( wp_remote_retrieve_body( $response ) ); |
| 89 | |
| 90 | if ( isset( $body_json->body ) ) { |
| 91 | return $body_json->body; |
| 92 | } |
| 93 | } |
| 94 | |
| 95 | return null; |
| 96 | } |
| 97 | |
| 98 | /** |
| 99 | * Returns all the WP.com themes. |
| 100 | * |
| 101 | * @return array<stdClass> An array with all the WPCom themes. |
| 102 | */ |
| 103 | public function fetch_all_non_delisted_themes(): array { |
| 104 | return $this->fetch_themes( 'wpcom-themes-all' ); |
| 105 | } |
| 106 | |
| 107 | /** |
| 108 | * Returns the WP.com theme with the given slug. |
| 109 | * |
| 110 | * @param string $slug Theme slug. |
| 111 | * |
| 112 | * @return stdClass|null A WPCom theme object or null if not found. |
| 113 | */ |
| 114 | public function fetch_theme( string $slug ): ?stdClass { |
| 115 | $url = sprintf( self::WP_COM_THEME_API_URL, $slug ); |
| 116 | |
| 117 | $theme = $this->cache->run_cached( |
| 118 | 'wpcom-themes-' . $slug, |
| 119 | fn() => $this->handle_request( $url ) |
| 120 | ); |
| 121 | |
| 122 | if ( ! $theme || isset( $theme->error ) ) { |
| 123 | return null; |
| 124 | } |
| 125 | |
| 126 | return $theme; |
| 127 | } |
| 128 | |
| 129 | /** |
| 130 | * Returns the store products each partner theme is sold as, by theme slug. |
| 131 | * |
| 132 | * The catalog endpoint does not carry `product_details`, so the one tier that is sold per |
| 133 | * theme is read again from the endpoint that does. DOTCOM-18927. |
| 134 | * |
| 135 | * @return array<string, array<stdClass>> Product details, keyed by theme slug. |
| 136 | */ |
| 137 | public function fetch_partner_products(): array { |
| 138 | return $this->cache->run_cached( |
| 139 | 'wpcom-themes-partner-products', |
| 140 | function () { |
| 141 | $body = $this->handle_request( self::WP_COM_PARTNER_THEMES_API_URL ); |
| 142 | |
| 143 | if ( ! isset( $body->themes ) || ! is_array( $body->themes ) ) { |
| 144 | return null; |
| 145 | } |
| 146 | |
| 147 | $products = array(); |
| 148 | foreach ( $body->themes as $theme ) { |
| 149 | if ( isset( $theme->id ) && is_string( $theme->id ) && ! empty( $theme->product_details ) ) { |
| 150 | $products[ $theme->id ] = (array) $theme->product_details; |
| 151 | } |
| 152 | } |
| 153 | |
| 154 | return $products; |
| 155 | } |
| 156 | ) ?? array(); |
| 157 | } |
| 158 | |
| 159 | /** |
| 160 | * Returns which of these WordPress.com themes WordPress.org also lists. |
| 161 | * |
| 162 | * Themes in the catalog share one daily lookup. Search also returns themes outside it, such as |
| 163 | * older default themes, which are looked up together and cached as a set. |
| 164 | * |
| 165 | * @param string[] $slugs Theme slugs. |
| 166 | * @return string[]|null The ones WordPress.org lists, or null when it could not be asked. |
| 167 | */ |
| 168 | public function fetch_wporg_slugs( array $slugs ): ?array { |
| 169 | $catalog = array(); |
| 170 | foreach ( $this->fetch_all_non_delisted_themes() as $theme ) { |
| 171 | if ( isset( $theme->id ) && is_string( $theme->id ) ) { |
| 172 | $catalog[] = $theme->id; |
| 173 | } |
| 174 | } |
| 175 | |
| 176 | if ( array() === $catalog ) { |
| 177 | return null; |
| 178 | } |
| 179 | |
| 180 | $listed = $this->cache->run_cached( |
| 181 | 'wpcom-themes-wporg-slugs', |
| 182 | fn() => $this->fetch_wporg_listed( $catalog ) |
| 183 | ); |
| 184 | |
| 185 | $outside = array_values( array_diff( array_filter( $slugs, 'is_string' ), $catalog ) ); |
| 186 | if ( null !== $listed && array() !== $outside ) { |
| 187 | sort( $outside ); |
| 188 | $also = $this->cache->run_cached( |
| 189 | 'wpcom-themes-wporg-slugs-' . md5( implode( ',', $outside ) ), |
| 190 | fn() => $this->fetch_wporg_listed( $outside ) |
| 191 | ); |
| 192 | $listed = null === $also ? null : array_merge( $listed, $also ); |
| 193 | } |
| 194 | |
| 195 | return null === $listed ? null : array_values( array_intersect( $slugs, $listed ) ); |
| 196 | } |
| 197 | |
| 198 | /** |
| 199 | * Asks WordPress.org which of these themes it lists, in batches it accepts. |
| 200 | * |
| 201 | * @param string[] $slugs Theme slugs. |
| 202 | * @return string[]|null The slugs it lists, or null when a batch could not be asked. |
| 203 | */ |
| 204 | protected function fetch_wporg_listed( array $slugs ): ?array { |
| 205 | $listed = array(); |
| 206 | foreach ( array_chunk( $slugs, self::WP_ORG_BATCH_SIZE ) as $batch ) { |
| 207 | $found = $this->fetch_wporg_batch( $batch ); |
| 208 | |
| 209 | // A partial answer would read as "not on WordPress.org" for the rest. |
| 210 | if ( null === $found ) { |
| 211 | return null; |
| 212 | } |
| 213 | |
| 214 | $listed = array_merge( $listed, $found ); |
| 215 | } |
| 216 | |
| 217 | return $listed; |
| 218 | } |
| 219 | |
| 220 | /** |
| 221 | * Asks WordPress.org which of these themes it lists. |
| 222 | * |
| 223 | * @param string[] $slugs At most WP_ORG_BATCH_SIZE theme slugs. |
| 224 | * @return string[]|null The slugs it lists, or null when it could not be asked. |
| 225 | */ |
| 226 | protected function fetch_wporg_batch( array $slugs ): ?array { |
| 227 | $url = add_query_arg( |
| 228 | array( |
| 229 | 'action' => 'theme_information', |
| 230 | 'request' => array( |
| 231 | 'slugs' => implode( ',', $slugs ), |
| 232 | 'fields' => array( |
| 233 | 'sections' => 0, |
| 234 | 'description' => 0, |
| 235 | 'tags' => 0, |
| 236 | 'ratings' => 0, |
| 237 | ), |
| 238 | ), |
| 239 | ), |
| 240 | self::WP_ORG_THEMES_API_URL |
| 241 | ); |
| 242 | |
| 243 | $response = wp_remote_get( $url ); |
| 244 | $body = json_decode( (string) wp_remote_retrieve_body( $response ), true ); |
| 245 | |
| 246 | if ( 200 !== wp_remote_retrieve_response_code( $response ) || ! is_array( $body ) || isset( $body['error'] ) ) { |
| 247 | return null; |
| 248 | } |
| 249 | |
| 250 | $listed = array(); |
| 251 | foreach ( $body as $slug => $theme ) { |
| 252 | // A theme it does not list comes back as `{ "error": "Theme not found" }`. |
| 253 | if ( is_array( $theme ) && ! isset( $theme['error'] ) ) { |
| 254 | $listed[] = (string) $slug; |
| 255 | } |
| 256 | } |
| 257 | |
| 258 | return $listed; |
| 259 | } |
| 260 | |
| 261 | /** |
| 262 | * Returns the collection of the recommended WP.com themes. |
| 263 | * |
| 264 | * @return array<stdClass> An array with all the recommended WPCom themes. |
| 265 | */ |
| 266 | public function fetch_recommended_themes(): array { |
| 267 | return $this->fetch_themes( |
| 268 | 'wpcom-themes-recommended', |
| 269 | array( 'collection' => 'recommended' ) |
| 270 | ); |
| 271 | } |
| 272 | |
| 273 | /** |
| 274 | * Returns the WP.com themes that match the given search term. |
| 275 | * |
| 276 | * @param string $search Search term. |
| 277 | * |
| 278 | * @return array<stdClass> An array with all the matching WPCom themes. |
| 279 | */ |
| 280 | public function search_themes( string $search ): array { |
| 281 | return $this->fetch_themes( |
| 282 | 'wpcom-themes-search-' . md5( $search ), |
| 283 | array( |
| 284 | 'search' => $search, |
| 285 | 'sort' => 'date', |
| 286 | ) |
| 287 | ); |
| 288 | } |
| 289 | } |