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"content": "<?php\n\nnamespace Controller\\Api;\n\nuse Framework\\Controller;\nuse Infrastructure\\AI\\AIConfig;\nuse Infrastructure\\AI\\ChatService;\nuse Infrastructure\\AI\\OllamaService;\nuse Infrastructure\\AI\\QdrantService;\n\nclass ChatController extends Controller\n{\n private ChatService $chatService;\n private OllamaService $ollamaService;\n private QdrantService $qdrantService;\n\n public function __construct()\n {\n $config = AIConfig::fromCredentialsFile();\n $this->chatService = $config->createChatService();\n $this->ollamaService = $config->createOllamaService();\n $this->qdrantService = $config->createQdrantService();\n }\n\n \/**\n * POST \/api\/v1\/chat\n * Handle chat message\n *\/\n public function send(): void\n {\n $input = json_decode(file_get_contents('php:\/\/input'), true);\n $question = trim($input['message'] ?? '');\n\n if ($question === '') {\n $this->json(['error' => 'Keine Frage angegeben'], 400);\n\n return;\n }\n\n try {\n $result = $this->askChat($question);\n $this->json($result);\n } catch (\\Exception $e) {\n $this->json(['error' => $e->getMessage()], 500);\n }\n }\n\n \/**\n * GET \/api\/v1\/chat\/search\n * Search for relevant chunks\n *\/\n public function search(): void\n {\n $query = trim($_GET['q'] ?? '');\n $limit = (int) ($_GET['limit'] ?? 5);\n\n if ($query === '') {\n $this->json(['error' => 'Keine Suchanfrage'], 400);\n\n return;\n }\n\n try {\n $results = $this->searchChunks($query, $limit);\n $this->json(['results' => $results]);\n } catch (\\Exception $e) {\n $this->json(['error' => $e->getMessage()], 500);\n }\n }\n\n \/**\n * GET \/api\/v1\/chat\/stats\n * Get chat\/document statistics (Doc2Vector Pipeline)\n *\/\n public function stats(): void\n {\n try {\n $pdo = $this->getDatabase();\n\n $stats = [\n 'dokumente' => (int) $pdo->query('SELECT COUNT(*) FROM dokumentation WHERE depth = 0')->fetchColumn(),\n 'seiten' => (int) $pdo->query('SELECT COUNT(*) FROM dokumentation WHERE depth > 0')->fetchColumn(),\n 'chunks' => (int) $pdo->query('SELECT COUNT(*) FROM dokumentation_chunks')->fetchColumn(),\n 'tokens' => (int) $pdo->query('SELECT COALESCE(SUM(token_count), 0) FROM dokumentation_chunks')->fetchColumn(),\n 'analyzed' => (int) $pdo->query(\"SELECT COUNT(*) FROM dokumentation_chunks WHERE analysis_status = 'completed'\")->fetchColumn(),\n 'synced' => (int) $pdo->query('SELECT COUNT(*) FROM dokumentation_chunks WHERE qdrant_id IS NOT NULL')->fetchColumn(),\n ];\n\n $this->json($stats);\n } catch (\\Exception $e) {\n $this->json(['error' => $e->getMessage()], 500);\n }\n }\n\n \/**\n * Ask chat question using ChatService\n *\n * @param string $question User's question\n *\n * @return array<string, mixed> Chat response with answer and sources\n *\n * @throws \\RuntimeException If chat service fails\n *\/\n private function askChat(string $question): array\n {\n try {\n \/\/ Use dokumentation_chunks collection for RAG\n return $this->chatService->chat($question, 'claude-opus-4-5-20251101', 'dokumentation_chunks', 5);\n } catch (\\RuntimeException $e) {\n throw new \\RuntimeException('Chat-Service konnte nicht ausgeführt werden: ' . $e->getMessage(), 0, $e);\n }\n }\n\n \/**\n * Search for similar chunks using vector search\n *\n * @param string $query Search query\n * @param int $limit Maximum number of results\n *\n * @return array<int, array{id: int|string, score: float, payload: array<string, mixed>}> Search results\n *\n * @throws \\RuntimeException If search fails\n *\/\n private function searchChunks(string $query, int $limit): array\n {\n try {\n $queryEmbedding = $this->ollamaService->getEmbedding($query);\n\n \/\/ Use dokumentation_chunks collection\n return $this->qdrantService->search($queryEmbedding, 'dokumentation_chunks', $limit);\n } catch (\\RuntimeException $e) {\n throw new \\RuntimeException('Suche konnte nicht ausgeführt werden: ' . $e->getMessage(), 0, $e);\n }\n }\n\n \/**\n * Get database connection for dokumentation tables (ki_dev)\n *\/\n private function getDatabase(): \\PDO\n {\n return \\Infrastructure\\Config\\DatabaseFactory::dev();\n }\n}\n",
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