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"filePath": "\/var\/www\/dev.campus.systemische-tools.de\/src\/Infrastructure\/Persistence\/ChatMessageRepository.php",
"content": "<?php\n\ndeclare(strict_types=1);\n\nnamespace Infrastructure\\Persistence;\n\n\/\/ @responsibility: Persistenz für Chat-Nachrichten (CRUD, Session-Filter)\n\nuse Domain\\Entity\\ChatMessage;\nuse Domain\\Factory\\ChatMessageFactory;\nuse Domain\\Repository\\ChatMessageRepositoryInterface;\n\nclass ChatMessageRepository implements ChatMessageRepositoryInterface\n{\n private \\PDO $pdo;\n\n public function __construct(\\PDO $pdo)\n {\n $this->pdo = $pdo;\n }\n\n public function findBySessionId(int $sessionId): array\n {\n $stmt = $this->pdo->prepare(\n 'SELECT * FROM chat_messages WHERE session_id = ? ORDER BY created_at ASC'\n );\n $stmt->execute([$sessionId]);\n\n $messages = [];\n foreach ($stmt->fetchAll(\\PDO::FETCH_ASSOC) as $row) {\n $messages[] = ChatMessageFactory::fromArray($row);\n }\n\n return $messages;\n }\n\n public function saveEntity(ChatMessage $message): int\n {\n $data = $message->toArray();\n unset($data['id']);\n\n $stmt = $this->pdo->prepare(\n 'INSERT INTO chat_messages\n (session_id, role, content, model, tokens_input, tokens_output, sources,\n start_microtime, end_microtime, author_profile_id, system_prompt_id, collections, context_limit, chunks_used, llm_request_id)\n VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)'\n );\n $stmt->execute([\n $data['session_id'],\n $data['role'],\n $data['content'],\n $data['model'],\n $data['tokens_input'],\n $data['tokens_output'],\n $data['sources'],\n $data['start_microtime'],\n $data['end_microtime'],\n $data['author_profile_id'],\n $data['system_prompt_id'],\n $data['collections'],\n $data['context_limit'],\n $data['chunks_used'],\n $data['llm_request_id'],\n ]);\n\n \/\/ Update session timestamp\n $this->pdo->prepare('UPDATE chat_sessions SET updated_at = NOW() WHERE id = ?')\n ->execute([$message->sessionId()]);\n\n return (int) $this->pdo->lastInsertId();\n }\n\n public function save(\n int $sessionId,\n string $role,\n string $content,\n string $model,\n ?int $tokensInput = null,\n ?int $tokensOutput = null,\n ?array $sources = null,\n ?float $startMicrotime = null,\n ?float $endMicrotime = null,\n ?int $authorProfileId = null,\n ?int $systemPromptId = null,\n ?string $collectionsJson = null,\n ?int $contextLimit = null\n ): int {\n $stmt = $this->pdo->prepare(\n 'INSERT INTO chat_messages\n (session_id, role, content, model, tokens_input, tokens_output, sources,\n start_microtime, end_microtime, author_profile_id, system_prompt_id, collections, context_limit)\n VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)'\n );\n $stmt->execute([\n $sessionId,\n $role,\n $content,\n $model,\n $tokensInput,\n $tokensOutput,\n $sources !== null ? json_encode($sources) : null,\n $startMicrotime,\n $endMicrotime,\n $authorProfileId,\n $systemPromptId,\n $collectionsJson,\n $contextLimit,\n ]);\n\n \/\/ Update session timestamp\n $this->pdo->prepare('UPDATE chat_sessions SET updated_at = NOW() WHERE id = ?')\n ->execute([$sessionId]);\n\n return (int) $this->pdo->lastInsertId();\n }\n\n public function delete(int $id): void\n {\n $stmt = $this->pdo->prepare('DELETE FROM chat_messages WHERE id = ?');\n $stmt->execute([$id]);\n }\n\n public function deleteBySessionId(int $sessionId): void\n {\n $stmt = $this->pdo->prepare('DELETE FROM chat_messages WHERE session_id = ?');\n $stmt->execute([$sessionId]);\n }\n\n public function getSessionStats(int $sessionId): array\n {\n $stmt = $this->pdo->prepare(\n 'SELECT\n COUNT(*) as message_count,\n COALESCE(SUM(tokens_input), 0) as total_input_tokens,\n COALESCE(SUM(tokens_output), 0) as total_output_tokens,\n COALESCE(SUM(end_microtime - start_microtime), 0) as total_duration\n FROM chat_messages\n WHERE session_id = ?'\n );\n $stmt->execute([$sessionId]);\n\n return $stmt->fetch(\\PDO::FETCH_ASSOC);\n }\n}\n",
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