| 1 |
<?php |
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/** |
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* Instagram feed data for the Instagram block. |
| 4 |
* |
| 5 |
* The access token never reaches the browser: it is kept in a site option and |
| 6 |
* every Graph API call is made here, server-side. The block only ever asks this |
| 7 |
* endpoint for already-fetched media, so a published page carries no credential. |
| 8 |
* |
| 9 |
* Ported from bPlugins/my-social-feeds (includes/Instagram.php), minus the OAuth |
| 10 |
* connect screen — the token is entered in the block's own settings. |
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* |
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* @package bBlocks |
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*/ |
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|
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namespace BBlocks\Inc; |
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|
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if ( ! defined( 'ABSPATH' ) ) { |
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exit; |
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} |
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|
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class BBlocksInstagram { |
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const OPTION = 'b_blocks_instagram'; |
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const CACHE_KEY = 'b_blocks_instagram_feed_'; |
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|
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public function __construct() { |
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add_action( 'init', [ $this, 'register_option' ] ); |
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add_action( 'wp_ajax_bBlocksInstagramFeed', [ $this, 'feed' ] ); |
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add_action( 'wp_ajax_nopriv_bBlocksInstagramFeed', [ $this, 'feed' ] ); |
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add_action( 'wp_ajax_bBlocksInstagramClearCache', [ $this, 'clear_cache' ] ); |
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add_action( 'wp_ajax_bBlocksInstagramGetAccount', [ $this, 'get_account' ] ); |
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add_action( 'wp_ajax_bBlocksInstagramSaveAccount', [ $this, 'save_account' ] ); |
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add_action( 'wp_enqueue_scripts', [ $this, 'localize' ], 20 ); |
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add_action( 'enqueue_block_editor_assets', [ $this, 'localize' ], 20 ); |
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} |
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|
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/** |
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* Registered so the option is a known site setting, but deliberately kept out |
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* of REST: the token is only ever written through save_account() below, and is |
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* never read back to the browser at all. |
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*/ |
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public function register_option() { |
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register_setting( |
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'options', |
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self::OPTION, |
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[ |
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'type' => 'object', |
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'default' => [ 'accounts' => [] ], |
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'show_in_rest' => false, |
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] |
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); |
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} |
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|
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public function localize() { |
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foreach ( [ 'b-blocks-instagram-view-script', 'b-blocks-index-script' ] as $handle ) { |
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if ( wp_script_is( $handle, 'registered' ) ) { |
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wp_localize_script( |
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$handle, |
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'bBlocksInstagram', |
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[ |
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'ajaxUrl' => admin_url( 'admin-ajax.php' ), |
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'nonce' => wp_create_nonce( 'wp_ajax' ), |
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] |
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); |
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} |
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} |
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} |
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|
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private function accounts() { |
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$data = get_option( self::OPTION, [] ); |
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|
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return isset( $data['accounts'] ) && is_array( $data['accounts'] ) ? $data['accounts'] : []; |
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} |
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|
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/** The token saved on Dashboard -> Settings -> API Integrations, if any. */ |
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public static function dashboard_token() { |
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$keys = get_option( 'bBlocksApiKeys', [] ); |
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|
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return is_array( $keys ) ? (string) ( $keys['instagram']['key'] ?? '' ) : ''; |
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} |
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|
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/** |
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* The dashboard card wins, since that is the site-wide place a token is meant |
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* to be entered; a token stored on the block itself keeps older setups working. |
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*/ |
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private function token_for( $account ) { |
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$dashboard = self::dashboard_token(); |
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|
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return '' === $dashboard ? (string) ( $account['token'] ?? '' ) : $dashboard; |
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} |
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|
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/** Matches the account the block asked for, by username or by id. */ |
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private function find_account( $wanted ) { |
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foreach ( $this->accounts() as $account ) { |
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if ( '' === $wanted || ( $account['username'] ?? '' ) === $wanted || (string) ( $account['id'] ?? '' ) === (string) $wanted ) { |
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return $account; |
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} |
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} |
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|
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// With a token in the dashboard, the feed works before any account has been |
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// saved on the block itself — the token already identifies the account. |
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return '' === self::dashboard_token() ? null : [ 'id' => '', 'username' => $wanted, 'token' => '' ]; |
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} |
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|
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/** Only an administrator may see or change which account is connected. */ |
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private function guard() { |
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$nonce = sanitize_text_field( wp_unslash( $_POST['nonce'] ?? '' ) ); |
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|
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if ( ! wp_verify_nonce( $nonce, 'wp_ajax' ) || ! current_user_can( 'manage_options' ) ) { |
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wp_send_json_error( __( 'Invalid request.', 'b-blocks' ) ); |
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} |
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} |
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|
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/** |
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* Reports whether a token is stored, never the token itself — it would end up |
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* in the editor's DOM for anyone looking over the author's shoulder. |
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*/ |
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public function get_account() { |
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$this->guard(); |
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|
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$account = $this->accounts()[0] ?? []; |
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|
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wp_send_json_success( |
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[ |
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'username' => $account['username'] ?? '', |
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'hasToken' => '' !== $this->token_for( $account ), |
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'fromDashboard' => '' !== self::dashboard_token(), |
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] |
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); |
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} |
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|
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public function save_account() { |
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$this->guard(); |
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|
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$account = $this->accounts()[0] ?? []; |
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$username = sanitize_text_field( wp_unslash( $_POST['username'] ?? '' ) ); |
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$token = sanitize_text_field( wp_unslash( $_POST['token'] ?? '' ) ); |
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|
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// An empty token field means "leave the stored one alone", so the account |
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// can be renamed without retyping the credential. |
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$saved = [ |
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'id' => $account['id'] ?? '', |
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'username' => $username, |
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'token' => '' === $token ? ( $account['token'] ?? '' ) : $token, |
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]; |
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|
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update_option( self::OPTION, [ 'accounts' => '' === $saved['username'] && '' === $saved['token'] ? [] : [ $saved ] ] ); |
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|
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self::flush(); |
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|
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wp_send_json_success( [ 'username' => $saved['username'], 'hasToken' => ! empty( $saved['token'] ) ] ); |
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} |
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|
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/** |
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* Validates a token for the dashboard's API Integrations card. Graph answers |
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* with a 200 and an error in the body, so the body is what decides. |
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*/ |
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public static function test_token( $token ) { |
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$token = trim( (string) $token ); |
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|
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if ( '' === $token ) { |
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return [ 'valid' => false, 'message' => __( 'No access token provided', 'b-blocks' ) ]; |
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} |
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|
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$res = wp_remote_get( add_query_arg( |
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[ 'fields' => 'id,username', 'access_token' => $token ], |
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'https://graph.instagram.com/me' |
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), [ 'timeout' => 10 ] ); |
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|
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if ( is_wp_error( $res ) ) { |
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return [ 'valid' => false, 'message' => 'Connection failed: ' . $res->get_error_message() ]; |
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} |
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|
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$body = json_decode( wp_remote_retrieve_body( $res ), true ); |
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|
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if ( isset( $body['error']['message'] ) ) { |
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return [ 'valid' => false, 'message' => $body['error']['message'] ]; |
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} |
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|
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if ( empty( $body['username'] ) ) { |
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return [ 'valid' => false, 'message' => __( 'Instagram did not return an account for this token', 'b-blocks' ) ]; |
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} |
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|
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// A new token must not keep serving the feed the old one fetched. |
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self::flush(); |
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|
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return [ 'valid' => true, 'message' => sprintf( '%s @%s', __( 'Connected as', 'b-blocks' ), $body['username'] ) ]; |
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} |
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|
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public function feed() { |
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$nonce = sanitize_text_field( wp_unslash( $_POST['nonce'] ?? '' ) ); |
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|
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if ( ! wp_verify_nonce( $nonce, 'wp_ajax' ) ) { |
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wp_send_json_error( __( 'Invalid request.', 'b-blocks' ) ); |
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} |
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|
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$wanted = sanitize_text_field( wp_unslash( $_POST['account'] ?? '' ) ); |
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$limit = min( 100, max( 1, absint( $_POST['limit'] ?? 50 ) ) ); |
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$minutes = min( 10080, max( 0, absint( $_POST['cache'] ?? 30 ) ) ); |
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$account = $this->find_account( $wanted ); |
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|
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$token = $account ? $this->token_for( $account ) : ''; |
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|
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if ( '' === $token ) { |
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wp_send_json_error( __( 'No Instagram account is connected. Add an access token under Dashboard → Settings → API Integrations.', 'b-blocks' ) ); |
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} |
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|
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$cache_key = self::CACHE_KEY . md5( $token . '|' . $limit ); |
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$cached = $minutes ? get_transient( $cache_key ) : false; |
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|
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if ( false !== $cached ) { |
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wp_send_json_success( $cached ); |
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} |
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|
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$payload = $this->fetch( $token, $limit ); |
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|
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if ( is_wp_error( $payload ) ) { |
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wp_send_json_error( $payload->get_error_message() ); |
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} |
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|
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if ( $minutes ) { |
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set_transient( $cache_key, $payload, $minutes * MINUTE_IN_SECONDS ); |
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} |
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|
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wp_send_json_success( $payload ); |
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} |
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|
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/** |
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* Asks for the richer profile first. Graph rejects the whole request when a |
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* field is not available to the token's account type, so a plain token falls |
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* back to the fields every account has rather than returning nothing. |
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*/ |
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private function user( $token ) { |
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$sets = [ |
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'id,username,media_count,account_type,name,profile_picture_url,followers_count', |
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'id,username,media_count,account_type', |
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]; |
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|
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foreach ( $sets as $fields ) { |
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$res = wp_remote_get( add_query_arg( |
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[ 'fields' => $fields, 'access_token' => $token ], |
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'https://graph.instagram.com/me' |
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), [ 'timeout' => 15 ] ); |
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|
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if ( is_wp_error( $res ) ) { |
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return $res; |
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} |
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|
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$body = json_decode( wp_remote_retrieve_body( $res ), true ); |
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|
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if ( ! isset( $body['error'] ) ) { |
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return $body; |
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} |
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|
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$last = $body; |
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} |
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|
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return new \WP_Error( 'b_blocks_instagram', $last['error']['message'] ?? __( 'Instagram rejected the request.', 'b-blocks' ) ); |
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} |
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|
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private function fetch( $token, $limit ) { |
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$fields = 'id,username,media_type,media_url,thumbnail_url,caption,permalink,timestamp,children{id,media_type,media_url,thumbnail_url,permalink}'; |
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|
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$user = $this->user( $token ); |
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|
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if ( is_wp_error( $user ) ) { |
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return $user; |
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} |
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|
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$media_res = wp_remote_get( add_query_arg( |
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[ 'fields' => $fields, 'access_token' => $token, 'limit' => $limit ], |
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'https://graph.instagram.com/me/media' |
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), [ 'timeout' => 15 ] ); |
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|
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if ( is_wp_error( $media_res ) ) { |
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return $media_res; |
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} |
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|
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$media = json_decode( wp_remote_retrieve_body( $media_res ), true ); |
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|
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// Graph reports its own failures in the body with a 200, so the error has |
| 281 |
// to be read out rather than inferred from the status code. |
| 282 |
if ( isset( $media['error']['message'] ) ) { |
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return new \WP_Error( 'b_blocks_instagram', $media['error']['message'] ); |
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} |
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|
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return [ |
| 287 |
'user' => [ |
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'id' => $user['id'] ?? '', |
| 289 |
'username' => $user['username'] ?? '', |
| 290 |
'name' => $user['name'] ?? '', |
| 291 |
'profile_picture_url' => $user['profile_picture_url'] ?? '', |
| 292 |
'followers_count' => $user['followers_count'] ?? 0, |
| 293 |
'mediaCount' => $user['media_count'] ?? 0, |
| 294 |
'accountType' => $user['account_type'] ?? '', |
| 295 |
], |
| 296 |
'media' => array_values( $media['data'] ?? [] ), |
| 297 |
]; |
| 298 |
} |
| 299 |
|
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public function clear_cache() { |
| 301 |
$nonce = sanitize_text_field( wp_unslash( $_POST['nonce'] ?? '' ) ); |
| 302 |
|
| 303 |
if ( ! wp_verify_nonce( $nonce, 'wp_ajax' ) || ! current_user_can( 'edit_posts' ) ) { |
| 304 |
wp_send_json_error( __( 'Invalid request.', 'b-blocks' ) ); |
| 305 |
} |
| 306 |
|
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self::flush(); |
| 308 |
|
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wp_send_json_success(); |
| 310 |
} |
| 311 |
|
| 312 |
/** A changed account or token must not keep serving the old feed. */ |
| 313 |
private static function flush() { |
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global $wpdb; |
| 315 |
|
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// phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.DirectDatabaseQuery.NoCaching -- transients have no bulk delete API. |
| 317 |
$wpdb->query( $wpdb->prepare( "DELETE FROM {$wpdb->options} WHERE option_name LIKE %s", '_transient_' . self::CACHE_KEY . '%' ) ); |
| 318 |
} |
| 319 |
} |
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|
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new BBlocksInstagram(); |
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|
