fcc61c0cb8
Extracted credential validation, request building, response parsing, and configuration helpers from the 464-line OpenRouter provider into separate, focused classes. This follows the pattern established by the Cloudflare image provider and brings all files under the project's 300-line limit. Files created: - class-open-router-validator.php (152 lines): Handles credential validation with HTTP probes and diagnostic messaging. Delegates from the provider. - class-open-router-config.php (84 lines): Centralizes admin config resolution for API base URL and cache TTL settings. Used by both provider and validator. - class-open-router-request-builder.php (79 lines): Encapsulates request header building and cURL auth filter registration for hosting environments that strip Authorization headers. - class-open-router-response-parser.php (87 lines): Handles response parsing, error classification, and retry-decision logic. - Tests: OpenRouterValidatorTest.php with comprehensive credential checks. Provider shrinks from 464 to 278 lines. All classes are under 300 lines. Dependencies remain clean: validator and config are independent, request-builder and response-parser have no circular imports. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
80 lines
3.0 KiB
PHP
80 lines
3.0 KiB
PHP
<?php
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declare(strict_types=1);
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/**
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* Request builder for OpenRouter API calls.
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*
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* Encapsulates the logic for building HTTP request headers, including
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* Cloudflare AI Gateway caching directives and belt-and-suspenders
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* cURL header injection to work around authorization header stripping
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* in certain hosting environments.
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*
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* Triggered by: PRAutoBlogger_OpenRouter_Provider::send_chat_completion()
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* Dependencies: add_action(), curl_setopt() (via http_api_curl filter).
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*
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* @see class-open-router-provider.php — Parent class that uses this builder.
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*/
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class PRAutoBlogger_OpenRouter_Request_Builder {
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/**
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* Build request headers for OpenRouter API call.
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*
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* Includes Authorization, Content-Type, HTTP-Referer, and optional
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* Cloudflare AI Gateway cache control headers.
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*
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* @param string $api_key Decrypted OpenRouter API key.
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* @param bool $via_gateway Whether the request is routed through Cloudflare AI Gateway.
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* @param int $cache_ttl Cache TTL in seconds (0 disables caching).
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*
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* @return array<string, string> HTTP headers ready for wp_remote_post().
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*/
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public function build_headers( string $api_key, bool $via_gateway, int $cache_ttl ): array {
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$headers = [
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'Authorization' => 'Bearer ' . $api_key,
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'Content-Type' => 'application/json',
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'HTTP-Referer' => home_url(),
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'X-Title' => 'PRAutoBlogger WordPress Plugin',
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];
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if ( $via_gateway && $cache_ttl > 0 ) {
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$headers['cf-aig-cache-ttl'] = (string) $cache_ttl;
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}
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return $headers;
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}
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/**
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* Register a cURL filter to inject Authorization header.
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*
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* Some hosting environments (Hostinger, certain proxies) strip the
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* Authorization header from wp_remote_post's 'headers' array before
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* the request is sent. The http_api_curl action fires after WordPress
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* configures the cURL handle but before curl_exec — setting
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* CURLOPT_HTTPHEADER here ensures the header reaches the upstream.
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*
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* Side effects: Adds an http_api_curl filter (caller must remove).
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*
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* @param array $request_headers Request headers (includes Authorization).
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* @param string $base_host Upstream host (scopes the filter to avoid leaking auth).
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*
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* @return callable The filter function (for later removal via remove_action).
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*/
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public function register_curl_auth_filter( array $request_headers, string $base_host ): callable {
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$curl_auth_filter = function ( $handle, $parsed_args, $url ) use ( $request_headers, $base_host ): void {
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// Scope to the configured upstream host only — never leak auth
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// into unrelated outbound requests made elsewhere in WordPress.
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if ( '' === $base_host || false === strpos( (string) $url, $base_host ) ) {
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return;
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}
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$curl_headers = [];
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foreach ( $request_headers as $name => $value ) {
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$curl_headers[] = $name . ': ' . $value;
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}
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// phpcs:ignore WordPress.WP.AlternativeFunctions.curl_curl_setopt
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curl_setopt( $handle, CURLOPT_HTTPHEADER, $curl_headers );
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};
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add_action( 'http_api_curl', $curl_auth_filter, 99, 3 );
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return $curl_auth_filter;
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}
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}
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