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<?php |
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|
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namespace Better_Payment\Lite\AI\Providers; |
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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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/** |
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* Anthropic Claude provider (Messages API). |
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* |
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* Uses native tool-use so the model returns Builder Operations as structured |
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* `tool_use` blocks rather than free text. Anthropic does not generate images, |
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* so image support is off. |
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*/ |
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class ClaudeProvider extends AbstractProvider { |
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|
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const ENDPOINT = 'https://api.anthropic.com/v1/messages'; |
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const API_VERSION = '2023-06-01'; |
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|
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public function get_id(): string { |
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return 'claude'; |
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} |
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|
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public function get_label(): string { |
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return 'Claude (Anthropic)'; |
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} |
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|
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public function get_models(): array { |
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return [ 'claude-sonnet-5', 'claude-opus-4-8', 'claude-haiku-4-5-20251001' ]; |
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} |
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|
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public function chat( array $messages, array $options = [] ): array { |
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list( $system, $turns ) = self::split_system( $messages, (string) ( $options['system'] ?? '' ) ); |
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|
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$payload_messages = []; |
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foreach ( $turns as $turn ) { |
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$payload_messages[] = [ |
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'role' => $turn['role'], |
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'content' => $turn['content'], |
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]; |
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} |
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|
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$body = [ |
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'model' => $this->resolve_model( $options ), |
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'max_tokens' => $this->max_tokens( $options ), |
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'temperature' => $this->temperature( $options ), |
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'messages' => $payload_messages, |
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]; |
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if ( '' !== $system ) { |
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$body['system'] = $system; |
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} |
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if ( ! empty( $options['tools'] ) ) { |
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$body['tools'] = $this->format_tools( $options['tools'] ); |
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if ( 'required' === ( $options['tool_choice'] ?? '' ) ) { |
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$body['tool_choice'] = [ 'type' => 'any' ]; |
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} |
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} |
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|
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$headers = [ |
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'x-api-key' => sanitize_text_field( (string) $this->config['api_key'] ), |
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'anthropic-version' => self::API_VERSION, |
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]; |
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|
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$result = $this->post_json( self::ENDPOINT, $headers, $body ); |
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if ( ! $result['ok'] ) { |
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return [ 'text' => '', 'tool_calls' => [], 'usage' => [], 'error' => $result['error'], 'raw' => $result['data'] ]; |
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} |
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|
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return $this->normalize_chat( $result['data'] ); |
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} |
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|
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/** |
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* @param array $tools |
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* @return array |
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*/ |
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protected function format_tools( array $tools ): array { |
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$out = []; |
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foreach ( $tools as $tool ) { |
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$out[] = [ |
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'name' => $tool['name'], |
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'description' => $tool['description'] ?? '', |
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'input_schema' => self::params_to_json_schema( $tool['params'] ?? [] ), |
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]; |
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} |
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return $out; |
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} |
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|
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/** |
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* @param mixed $data |
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* @return array |
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*/ |
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protected function normalize_chat( $data ): array { |
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$text = ''; |
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$tool_calls = []; |
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|
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foreach ( (array) ( $data['content'] ?? [] ) as $block ) { |
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$btype = $block['type'] ?? ''; |
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if ( 'text' === $btype ) { |
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$text .= (string) ( $block['text'] ?? '' ); |
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} elseif ( 'tool_use' === $btype ) { |
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$tool_calls[] = [ |
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'name' => (string) ( $block['name'] ?? '' ), |
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'arguments' => self::decode_arguments( $block['input'] ?? [] ), |
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]; |
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} |
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} |
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|
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return [ |
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'text' => $text, |
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'tool_calls' => $tool_calls, |
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'usage' => $data['usage'] ?? [], |
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'error' => null, |
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'raw' => $data, |
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]; |
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} |
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} |
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|
