"""
utils/feedback.py
Unified feedback handler for Clinical Research Chatbot.

Includes:
1️⃣ Feedback Queue (unanswered/low-confidence queries)
2️⃣ User Voting (👍 Helpful / 👎 Not Helpful)
"""

import os
import json
from datetime import datetime

# ----------------------------
# File Paths
# ----------------------------
FEEDBACK_QUEUE_LOG = "logs/feedback_queue.jsonl"
FEEDBACK_VOTES_LOG = "logs/feedback_votes.jsonl"


# ----------------------------
# Feedback Queue (for Admin Review)
# ----------------------------
def log_feedback(query: str, notes: str = "", sources=None):
    """
    Store unanswered or low-confidence queries for admin review.
    Saves to JSONL (one entry per line).
    """
    entry = {
        "timestamp": datetime.utcnow().isoformat(),
        "query": query,
        "notes": notes,
        "sources": sources or [],
    }

    os.makedirs(os.path.dirname(FEEDBACK_QUEUE_LOG), exist_ok=True)
    with open(FEEDBACK_QUEUE_LOG, "a", encoding="utf-8") as f:
        f.write(json.dumps(entry, ensure_ascii=False) + "\n")

    print(f"📝 Feedback queued for admin review: {query}")


def load_feedback(limit: int = 20):
    """
    Load last N feedback entries for admin dashboard.
    """
    if not os.path.exists(FEEDBACK_QUEUE_LOG):
        return []
    with open(FEEDBACK_QUEUE_LOG, "r", encoding="utf-8") as f:
        lines = f.readlines()
    entries = [json.loads(line) for line in lines]
    return entries[-limit:]


def clear_feedback():
    """
    Clear feedback log (admin only).
    """
    if os.path.exists(FEEDBACK_QUEUE_LOG):
        os.remove(FEEDBACK_QUEUE_LOG)
        print("🗑️ Feedback log cleared.")


# ----------------------------
# User Voting (for “Helpful / Not Helpful”)
# ----------------------------
def save_vote_feedback(query: str, vote: str, context=None):
    """
    Log user votes (👍 / 👎) on chatbot responses.
    """
    entry = {
        "timestamp": datetime.utcnow().isoformat(),
        "query": query,
        "vote": vote,
        "context": context or {},
    }

    os.makedirs(os.path.dirname(FEEDBACK_VOTES_LOG), exist_ok=True)
    try:
        with open(FEEDBACK_VOTES_LOG, "a", encoding="utf-8") as f:
            f.write(json.dumps(entry, ensure_ascii=False) + "\n")
        print(f"🗳️ User voted '{vote}' for query: {query}")
    except Exception as e:
        print(f"⚠️ Failed to save vote feedback: {e}")


def load_votes(limit: int = 50):
    """
    Load last N user votes for analysis.
    """
    if not os.path.exists(FEEDBACK_VOTES_LOG):
        return []
    with open(FEEDBACK_VOTES_LOG, "r", encoding="utf-8") as f:
        lines = f.readlines()
    entries = [json.loads(line) for line in lines]
    return entries[-limit:]


def clear_votes():
    """
    Clear user voting log (admin only).
    """
    if os.path.exists(FEEDBACK_VOTES_LOG):
        os.remove(FEEDBACK_VOTES_LOG)
        print("🗑️ User vote feedback cleared.")