import csv
from datetime import datetime

def log_feedback(query, context, evo_output, feedback):
    row = {
        "timestamp": datetime.utcnow().isoformat(),
        "query": query,
        "context": context,
        "evo_output": evo_output,
        "feedback": feedback
    }

    with open("feedback_log.csv", mode="a", newline="", encoding="utf-8") as file:
        writer = csv.DictWriter(file, fieldnames=row.keys())
        if file.tell() == 0:
            writer.writeheader()
        writer.writerow(row)