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| 1 | <?php |
| 2 | /** |
| 3 | * Setup class. |
| 4 | * |
| 5 | * @package automattic/jetpack-publicize |
| 6 | */ |
| 7 | |
| 8 | namespace Automattic\Jetpack\Publicize\Social_Image_Generator; |
| 9 | |
| 10 | use Automattic\Jetpack\Publicize\Jetpack_Social_Settings\Settings; |
| 11 | |
| 12 | /** |
| 13 | * Class for setting up Social Image Generator-related functionality. |
| 14 | */ |
| 15 | class Setup { |
| 16 | /** |
| 17 | * Initialise SIG-related functionality. |
| 18 | */ |
| 19 | public function init() { |
| 20 | if ( ! ( new Settings() )->is_sig_available() ) { |
| 21 | return; |
| 22 | } |
| 23 | |
| 24 | // Be wary of any code that you add to this file, since this function is called on plugin load. |
| 25 | // We're using the `wp_after_insert_post` hook because we need access to the updated post meta. By using the default priority |
| 26 | // of 10 we make sure that our code runs before Sync processes the post. |
| 27 | add_action( 'wp_after_insert_post', array( $this, 'generate_token_on_save' ), 10, 3 ); |
| 28 | add_action( 'jetpack_social_sig_warm_image', array( $this, 'warm_social_image' ) ); |
| 29 | add_action( 'rest_api_init', array( REST_Token_Controller::class, 'register' ) ); |
| 30 | |
| 31 | // Flagged to be removed after deprecation. |
| 32 | // @deprecated 0.38.3 |
| 33 | add_action( 'rest_api_init', array( REST_Settings_Controller::class, 'register' ) ); |
| 34 | } |
| 35 | |
| 36 | /** |
| 37 | * Get a token from WPCOM to generate the social image for the post, and save it locally. |
| 38 | * |
| 39 | * @param Post_Settings $post_settings A Post_Settings object that can be used to save the generated token. |
| 40 | */ |
| 41 | public function generate_token( $post_settings ) { |
| 42 | if ( ! $post_settings->is_enabled() ) { |
| 43 | return; |
| 44 | } |
| 45 | |
| 46 | $token = fetch_token( |
| 47 | $post_settings->get_custom_text(), |
| 48 | $post_settings->get_image_url(), |
| 49 | $post_settings->get_template(), |
| 50 | $post_settings->get_font() |
| 51 | ); |
| 52 | |
| 53 | if ( is_wp_error( $token ) ) { |
| 54 | return; |
| 55 | } |
| 56 | |
| 57 | $post_settings->update_setting( 'token', sanitize_text_field( $token ) ); |
| 58 | } |
| 59 | |
| 60 | /** |
| 61 | * Trigger token generation for a post if SIG is enabled. |
| 62 | * |
| 63 | * @param int $post_id Post ID. |
| 64 | * @param \WP_Post $post The post object being saved. |
| 65 | * @param bool $update Whether this is an update to a post. |
| 66 | */ |
| 67 | public function generate_token_on_save( $post_id, $post, $update ) { |
| 68 | if ( defined( 'WP_IMPORTING' ) && WP_IMPORTING ) { |
| 69 | return; |
| 70 | } |
| 71 | |
| 72 | // If we're not using the block editor for this post, do not continue. |
| 73 | if ( ! use_block_editor_for_post( $post ) ) { |
| 74 | return; |
| 75 | } |
| 76 | |
| 77 | global $publicize; |
| 78 | |
| 79 | if ( ! $publicize->post_type_is_publicizeable( $post->post_type ) ) { |
| 80 | return; |
| 81 | } |
| 82 | |
| 83 | $settings = new Settings(); |
| 84 | |
| 85 | if ( ! $settings->is_sig_available() ) { |
| 86 | return; |
| 87 | } |
| 88 | |
| 89 | if ( wp_is_post_autosave( $post ) || wp_is_post_revision( $post_id ) ) { |
| 90 | return; |
| 91 | } |
| 92 | |
| 93 | // Set SIG to be enabled by default for new posts if the toggle is on. |
| 94 | $post_settings = new Post_Settings( $post_id ); |
| 95 | if ( |
| 96 | ! $update && |
| 97 | 'auto-draft' === $post->post_status && |
| 98 | ! empty( $settings->get_settings()['socialImageGeneratorSettings']['enabled'] ) && |
| 99 | empty( $post_settings->get_settings( true ) ) && |
| 100 | 'jetpack-social-note' !== $post->post_type |
| 101 | ) { |
| 102 | $post_settings->update_setting( 'enabled', true ); |
| 103 | return; |
| 104 | } |
| 105 | |
| 106 | if ( $post->post_status === 'auto-draft' ) { |
| 107 | return; |
| 108 | } |
| 109 | |
| 110 | if ( ! $post_settings->is_enabled() ) { |
| 111 | return; |
| 112 | } |
| 113 | |
| 114 | $this->generate_token( $post_settings ); |
| 115 | |
| 116 | // Prime the Social Image Generator cache out-of-band right after publish. |
| 117 | // SIG renders the preview image on the first request to its URL, so a post |
| 118 | // shared immediately after publishing can race that cold render and end up |
| 119 | // with no preview image (notably on X, which does not retry). Warming the |
| 120 | // URL here means the image is already rendered and edge-cached before any |
| 121 | // crawler fetches it. Scheduled rather than inline so it never delays the |
| 122 | // publish request itself. |
| 123 | if ( |
| 124 | 'publish' === $post->post_status && |
| 125 | ! wp_next_scheduled( 'jetpack_social_sig_warm_image', array( $post_id ) ) |
| 126 | ) { |
| 127 | wp_schedule_single_event( time(), 'jetpack_social_sig_warm_image', array( $post_id ) ); |
| 128 | } |
| 129 | } |
| 130 | |
| 131 | /** |
| 132 | * Warm the edge cache for a post's generated social image. |
| 133 | * |
| 134 | * Runs from a scheduled single event (see generate_token_on_save) so it never |
| 135 | * blocks the publish request. Issues one blocking request to the same URL the |
| 136 | * Open Graph tags expose, which forces the on-demand render and lets the full |
| 137 | * response populate the edge cache before a crawler fetches it. |
| 138 | * |
| 139 | * @param int $post_id Post ID whose social image should be primed. |
| 140 | */ |
| 141 | public function warm_social_image( $post_id ) { |
| 142 | $post_settings = new Post_Settings( $post_id ); |
| 143 | |
| 144 | if ( ! $post_settings->is_enabled() ) { |
| 145 | return; |
| 146 | } |
| 147 | |
| 148 | $image_url = get_image_url( $post_id ); |
| 149 | |
| 150 | if ( empty( $image_url ) ) { |
| 151 | return; |
| 152 | } |
| 153 | |
| 154 | // Blocking so the rendered response travels back through the edge cache and |
| 155 | // is stored; redirection is followed to the final image URL the crawler hits. |
| 156 | wp_remote_get( |
| 157 | $image_url, |
| 158 | array( |
| 159 | 'timeout' => 15, |
| 160 | 'redirection' => 5, |
| 161 | 'blocking' => true, |
| 162 | 'user-agent' => 'WordPress.com Social Image Generator cache warmer', |
| 163 | ) |
| 164 | ); |
| 165 | } |
| 166 | } |