Initial commit: AutoBlogger v0.1.0
WordPress plugin that auto-researches topics from Reddit, generates SEO-optimized articles via OpenRouter LLMs, runs them through a chief editor agent, and publishes on a daily schedule. Includes: - Full generation pipeline (collect → analyze → score → generate → review → publish) - Cost tracking and budget enforcement - Admin UI: settings, review queue, metrics, activity log - CI/CD pipeline (GitHub Actions → WordPress REST deploy) - Unit test suite (PHPUnit + Brain Monkey) - Structured logging with configurable verbosity Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
Terence Ong
207
includes/providers/class-reddit-api-client.php
Executable file
207
includes/providers/class-reddit-api-client.php
Executable file
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<?php
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declare(strict_types=1);
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/**
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* Reddit API HTTP client for authenticated requests.
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*
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* Encapsulates OAuth2 token management, rate limit tracking, and HTTP methods
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* for the Reddit API. Decoupled from collection logic for testability.
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*
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* Triggered by: Autoblogger_Reddit_Provider calls fetch methods here.
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* Dependencies: Autoblogger_Encryption (for client secret), wp_remote_post/get().
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*
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* @see providers/class-reddit-provider.php — Instantiates this class.
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* @see ARCHITECTURE.md — External API integrations table.
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*/
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class Autoblogger_Reddit_API_Client {
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private const AUTH_URL = 'https://www.reddit.com/api/v1/access_token';
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private const API_BASE = 'https://oauth.reddit.com';
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private const USER_AGENT = 'AutoBlogger/0.1.0 (WordPress Plugin)';
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/**
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* Get an OAuth2 access token, using cached transient if available.
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*
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* Reddit script apps use client_credentials grant type.
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*
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* Side effects: HTTP request, sets transient.
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*
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* @param bool $force_refresh Bypass cache and request a new token.
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*
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* @return string Access token, or empty string on failure.
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*/
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public function get_access_token( bool $force_refresh = false ): string {
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if ( ! $force_refresh ) {
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$cached = get_transient( 'autoblogger_reddit_token' );
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if ( false !== $cached && is_string( $cached ) ) {
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return $cached;
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}
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}
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$client_id = get_option( 'autoblogger_reddit_client_id', '' );
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$client_secret = Autoblogger_Encryption::decrypt(
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get_option( 'autoblogger_reddit_client_secret', '' )
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);
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if ( '' === $client_id || '' === $client_secret ) {
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return '';
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}
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$response = wp_remote_post(
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self::AUTH_URL,
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[
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'timeout' => 15,
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'headers' => [
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// phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions.obfuscation_base64_encode
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'Authorization' => 'Basic ' . base64_encode( $client_id . ':' . $client_secret ),
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'User-Agent' => self::USER_AGENT,
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],
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'body' => [
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'grant_type' => 'client_credentials',
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],
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]
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);
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if ( is_wp_error( $response ) ) {
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Autoblogger_Logger::instance()->error( 'Reddit OAuth failed: ' . $response->get_error_message(), 'reddit' );
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return '';
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}
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if ( 200 !== wp_remote_retrieve_response_code( $response ) ) {
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Autoblogger_Logger::instance()->error( 'Reddit OAuth HTTP ' . wp_remote_retrieve_response_code( $response ), 'reddit' );
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return '';
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}
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$data = json_decode( wp_remote_retrieve_body( $response ), true );
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if ( ! isset( $data['access_token'] ) ) {
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Autoblogger_Logger::instance()->error( 'Reddit OAuth response missing access_token.', 'reddit' );
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return '';
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}
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$token = $data['access_token'];
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$expires = isset( $data['expires_in'] ) ? (int) $data['expires_in'] - 60 : 3540;
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set_transient( 'autoblogger_reddit_token', $token, $expires );
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return $token;
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}
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/**
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* Fetch posts from a subreddit.
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*
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* @param string $token OAuth access token.
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* @param string $subreddit Subreddit name (without r/ prefix).
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* @param int $limit Max posts to fetch.
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* @param string $time_filter Time filter for /top (hour, day, week, month, year, all).
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*
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* @return array<int, array<string, mixed>> Array of post data.
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*/
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public function fetch_posts( string $token, string $subreddit, int $limit, string $time_filter ): array {
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$url = sprintf(
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'%s/r/%s/hot?limit=%d&t=%s',
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self::API_BASE,
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rawurlencode( $subreddit ),
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min( $limit, 100 ),
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rawurlencode( $time_filter )
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);
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$response = $this->api_get( $token, $url );
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if ( null === $response || ! isset( $response['data']['children'] ) ) {
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return [];
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}
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$posts = [];
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foreach ( $response['data']['children'] as $child ) {
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if ( isset( $child['data'] ) ) {
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$posts[] = $child['data'];
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}
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}
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return $posts;
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}
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/**
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* Fetch top comments for a specific post.
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*
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* @param string $token OAuth access token.
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* @param string $subreddit Subreddit name.
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* @param string $post_id Reddit post ID (without t3_ prefix).
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* @param int $limit Max comments to fetch.
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*
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* @return array<int, array<string, mixed>> Array of comment data.
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*/
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public function fetch_comments( string $token, string $subreddit, string $post_id, int $limit ): array {
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$url = sprintf(
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'%s/r/%s/comments/%s?limit=%d&sort=top&depth=1',
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self::API_BASE,
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rawurlencode( $subreddit ),
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rawurlencode( $post_id ),
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min( $limit, 50 )
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);
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$response = $this->api_get( $token, $url );
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// Comments endpoint returns [post_listing, comments_listing].
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if ( ! is_array( $response ) || ! isset( $response[1]['data']['children'] ) ) {
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return [];
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}
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$comments = [];
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foreach ( $response[1]['data']['children'] as $child ) {
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if ( isset( $child['data'] ) && 't1' === ( $child['kind'] ?? '' ) ) {
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$comments[] = $child['data'];
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}
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}
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return $comments;
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}
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/**
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* Make an authenticated GET request to the Reddit API.
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*
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* Updates rate limit tracking from response headers.
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*
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* @param string $token OAuth access token.
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* @param string $url Full API URL.
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*
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* @return array<string, mixed>|null Decoded response, or null on failure.
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*/
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public function api_get( string $token, string $url ): ?array {
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$response = wp_remote_get(
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$url,
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[
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'timeout' => 30,
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'headers' => [
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'Authorization' => 'Bearer ' . $token,
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'User-Agent' => self::USER_AGENT,
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],
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]
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);
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if ( is_wp_error( $response ) ) {
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Autoblogger_Logger::instance()->error( 'Reddit API GET failed: ' . $response->get_error_message(), 'reddit' );
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return null;
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}
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// Track rate limits from response headers.
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$rate_remaining = wp_remote_retrieve_header( $response, 'x-ratelimit-remaining' );
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$rate_limit = wp_remote_retrieve_header( $response, 'x-ratelimit-used' );
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$rate_reset = wp_remote_retrieve_header( $response, 'x-ratelimit-reset' );
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if ( '' !== $rate_remaining ) {
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set_transient( 'autoblogger_reddit_rate_limit', [
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'remaining' => (int) $rate_remaining,
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'limit' => (int) $rate_limit + (int) $rate_remaining,
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'resets_at' => gmdate( 'Y-m-d H:i:s', time() + (int) $rate_reset ),
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], 120 );
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}
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$status_code = wp_remote_retrieve_response_code( $response );
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if ( 200 !== $status_code ) {
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Autoblogger_Logger::instance()->error( sprintf( 'Reddit API HTTP %d: %s', $status_code, substr( wp_remote_retrieve_body( $response ), 0, 300 ) ), 'reddit' );
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return null;
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}
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return json_decode( wp_remote_retrieve_body( $response ), true );
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}
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}
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