klevze
586c44ba74
Score artwork comments with local signatures plus Together AI, and optionally require Turnstile before posting.
61 lines
2.7 KiB
PHP
61 lines
2.7 KiB
PHP
<?php
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namespace App\Services\Moderation;
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use App\Contracts\Moderation\CommentSpamClassifier;
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use App\Data\Moderation\CommentSpamClassification;
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use Illuminate\Support\Arr;
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use Illuminate\Support\Facades\Http;
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use RuntimeException;
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final class TogetherCommentSpamClassifier implements CommentSpamClassifier
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{
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public function classify(string $content): CommentSpamClassification
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{
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$config = (array) config('comment_spam.ai', []);
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$key = (string) ($config['api_key'] ?? '');
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$model = (string) ($config['model'] ?? '');
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if ($key === '' || $model === '') {
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throw new RuntimeException('Together AI is not configured.');
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}
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if (! in_array($model, (array) ($config['allowed_models'] ?? []), true)) {
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throw new RuntimeException('Unsupported Together AI comment spam model.');
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}
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$started = microtime(true);
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$response = Http::timeout(min(5, max(1, (int) ($config['timeout'] ?? 5))))
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->withToken($key)
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->post(rtrim((string) ($config['base_url'] ?? 'https://api.together.xyz/v1'), '/').'/chat/completions', [
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'model' => $model,
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'temperature' => 0,
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'response_format' => ['type' => 'json_object'],
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'messages' => [
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['role' => 'system', 'content' => 'Classify the comment as spam or not spam. Return only JSON: {"spam":true|false,"confidence":0.0,"reason":"short explanation"}. Confidence must be a number from 0 to 1. Spam includes advertising, SEO promotion, unsolicited links, scams, and bot-like promotional repetition.'],
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['role' => 'user', 'content' => mb_substr($content, 0, (int) ($config['max_input_chars'] ?? 2500))],
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],
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]);
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if ($response->failed()) {
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throw new RuntimeException('Together AI request failed with status '.$response->status().'.');
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}
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$message = Arr::get($response->json(), 'choices.0.message.content');
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$decoded = is_string($message) ? json_decode($message, true) : null;
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if (! is_array($decoded) || ! is_bool($decoded['spam'] ?? null)
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|| ! is_numeric($decoded['confidence'] ?? null)
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|| $decoded['confidence'] < 0 || $decoded['confidence'] > 1
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|| ! is_string($decoded['reason'] ?? null)) {
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throw new RuntimeException('Together AI returned invalid moderation JSON.');
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}
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return new CommentSpamClassification(
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$decoded['spam'],
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(float) $decoded['confidence'],
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mb_substr(trim($decoded['reason']), 0, 500),
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'together',
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$model,
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(int) round((microtime(true) - $started) * 1000),
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);
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}
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}
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