# codex_logger.py
# Author: Liam Grinstead
# Logs activation, mutation, and collapse with author credit and hash
# All logs are saved as JSON files with timestamp and SHA-512 seal

import json
import os
import hashlib
from datetime import datetime

LOG_DIR = "logs"
os.makedirs(LOG_DIR, exist_ok=True)

def log_artifact(agent, score, hash_val):
    """
    Log an artifact with timestamp, agent details, fitness score, and SHA-512 seal.
    Saves to logs directory as JSON.
    """
    timestamp = datetime.utcnow().isoformat()
    log = {
        "timestamp": timestamp,
        "agent_id": agent.get("id", "Unknown"),
        "status": agent.get("status"),
        "fitness_score": score,
        "hash": hash_val,
        "author": "Liam Grinstead"
    }

    # Seal the log entry itself
    entry_str = json.dumps(log, sort_keys=True)
    log["sha512"] = hashlib.sha512(entry_str.encode()).hexdigest()

    # Save to file
    filename = f"{LOG_DIR}/artifact_{timestamp}.json"
    with open(filename, "w") as f:
        json.dump(log, f, indent=2)

    print("Artifact Logged:", log)
    return log

def list_logs():
    """
    List all saved logs.
    """
    return sorted(os.listdir(LOG_DIR))

def load_log(filename):
    """
    Load a specific log file.
    """
    filepath = os.path.join(LOG_DIR, filename)
    with open(filepath, "r") as f:
        return json.load(f)