| """ |
| Level-0 Summary Utilities for TRuCAL. |
| Provides raw evidence summarization for transparent AI reasoning. |
| """ |
| from typing import List, Dict, Optional |
| import json |
| from pathlib import Path |
| import logging |
| import time |
|
|
| logger = logging.getLogger(__name__) |
|
|
| class Level0Summary: |
| """Handles Level-0 evidence collection and summarization.""" |
| |
| def __init__(self, log_dir: str = "logs"): |
| """Initialize with logging directory.""" |
| self.log_dir = Path(log_dir) |
| self.log_dir.mkdir(exist_ok=True) |
| self.audit_log = self.log_dir / "level0_audit.jsonl" |
| |
| def summarize(self, query: str, sources: List[str], metadata: Optional[Dict] = None) -> str: |
| """ |
| Generate a Level-0 summary with raw evidence. |
| |
| Args: |
| query: The original user query |
| sources: List of source texts or evidence |
| metadata: Optional metadata for auditing |
| |
| Returns: |
| Formatted Level-0 summary string |
| """ |
| if not query or not sources: |
| return "" |
| |
| header = f"# Level-0 Summary\n" |
| header += f"**Query:** {query}\n\n" |
| header += "## Raw Evidence\n\n" |
| |
| evidence_sections = [] |
| for i, src in enumerate(sources, 1): |
| if not src or not src.strip(): |
| continue |
| evidence_sections.append(f"### Source {i}\n{src.strip()}\n") |
| |
| if not evidence_sections: |
| return f"{header}*No valid evidence sources provided.*" |
| |
| summary = header + "\n".join(evidence_sections) |
| |
| |
| self._log_summary(query, sources, summary, metadata) |
| |
| return summary |
| |
| def _log_summary(self, query: str, sources: List[str], summary: str, metadata: Optional[Dict] = None): |
| """Log the summary to the audit log.""" |
| try: |
| log_entry = { |
| "timestamp": time.time(), |
| "query": query, |
| "source_count": len(sources), |
| "summary": summary, |
| "metadata": metadata or {} |
| } |
| |
| with open(self.audit_log, "a", encoding="utf-8") as f: |
| f.write(json.dumps(log_entry) + "\n") |
| |
| except Exception as e: |
| logger.error(f"Failed to log Level-0 summary: {str(e)}") |
|
|
| |
| level0_summarizer = Level0Summary() |
|
|
| def get_level0_summary(query: str, sources: List[str], metadata: Optional[Dict] = None) -> str: |
| """Convenience function to get a Level-0 summary.""" |
| return level0_summarizer.summarize(query, sources, metadata) |
|
|
