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<?php |
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|
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namespace FluentSupport\App\Services\Integrations\AI\Providers; |
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|
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use FluentSupport\App\Services\Integrations\AI\BaseAIProvider; |
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use WP_Error; |
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|
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class AnthropicProvider extends BaseAIProvider |
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{ |
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protected $messagesUrl = 'https://api.anthropic.com/v1/messages'; |
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protected $apiVersion = '2023-06-01'; |
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|
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public function getProviderName(): string |
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{ |
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return 'Anthropic'; |
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} |
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|
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public function getAvailableModels(): array |
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{ |
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$models = [ |
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['value' => 'claude-opus-4-8', 'label' => 'Claude Opus 4 (Most Powerful)'], |
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['value' => 'claude-sonnet-4-6', 'label' => 'Claude Sonnet 4 (Recommended)'], |
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['value' => 'claude-haiku-4-5-20251001', 'label' => 'Claude Haiku 4 (Fastest)'], |
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]; |
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|
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return apply_filters('fluent_support/supported_anthropic_models', $models); |
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} |
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|
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/** |
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* @param int $ticketId |
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* @param string $prompt |
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* @param array $messages |
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* @return string|WP_Error |
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*/ |
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public function generateResponse(int $ticketId, string $prompt, array $messages = []) |
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{ |
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list($systemText, $anthropicMessages) = $this->convertMessages($messages, $prompt); |
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|
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$payload = [ |
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'model' => $this->model, |
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'max_tokens' => 1024, |
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'messages' => $anthropicMessages, |
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]; |
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|
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if ($systemText) { |
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$payload['system'] = $systemText; |
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} |
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|
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$headers = [ |
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'x-api-key' => $this->apiKey, |
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'anthropic-version' => $this->apiVersion, |
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]; |
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|
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$body = $this->sendRequest($this->messagesUrl, $payload, $headers); |
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|
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if (is_wp_error($body)) { |
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return $body; |
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} |
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|
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$content = $body['content'][0]['text'] ?? ''; |
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$tokens = ($body['usage']['input_tokens'] ?? 0) + ($body['usage']['output_tokens'] ?? 0); |
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|
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$this->fireSuccessAction($ticketId, $prompt, $tokens); |
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|
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return $content; |
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} |
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|
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protected function extractErrorMessage(array $body): string |
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{ |
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// Anthropic error format: { "type": "error", "error": { "type": "...", "message": "..." } } |
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return $body['error']['message'] |
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?? $body['message'] |
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?? __('Unknown error occurred.', 'fluent-support'); |
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} |
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|
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/** |
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* Converts OpenAI-format messages to Anthropic format. |
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* Returns [systemText, messages]. |
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*/ |
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private function convertMessages(array $messages, string $fallbackPrompt): array |
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{ |
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if (empty($messages)) { |
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return ['', [['role' => 'user', 'content' => $fallbackPrompt]]]; |
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} |
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|
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$systemText = ''; |
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$anthropicMessages = []; |
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|
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foreach ($messages as $msg) { |
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if ($msg['role'] === 'system') { |
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$systemText = $msg['content']; |
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} else { |
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$anthropicMessages[] = $msg; |
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} |
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} |
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|
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if (empty($anthropicMessages)) { |
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$anthropicMessages = [['role' => 'user', 'content' => $systemText ?: $fallbackPrompt]]; |
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$systemText = ''; |
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} |
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|
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return [$systemText, $anthropicMessages]; |
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} |
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|
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} |
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|
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|
