#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
assistant_bridge.py — Periodic file-based LLM bridge (pengganti mcp_server.py)

Alur (tanpa server HTTP — hemat token, EA baca hasil via JSON):
  1. EA menulis  MQL5\\Files\\ai_request.json
     {id, symbol, timeframe, setup_type, entry, sl, tp,
      historical_context, algorithmic_confidence_score, payload}
  2. Bridge polling periodik (--interval detik):
       - hanya memproses REQUEST BARU (dedupe by id) -> 1 panggilan LLM per setup
       - MarketAnalyzer.analyze() -> LLM (OpenAI/Google), fallback Anti-Veto 40.0
  3. Bridge menulis MQL5\\Files\\ai_response.json (atomic replace):
     {id, score, reason, used_fallback, provider, latency_ms, timestamp}
  4. EA membaca response di timer berikutnya (FileRead), lalu eksekusi.

Jalankan:  python assistant_bridge.py [--files <MQL5\\Files>] [--interval 5] [--once]
"""

import argparse
import json
import os
import sys
import time

sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
import logging
from models.analyzer import MarketAnalyzer  # noqa: E402

REQ = "ai_request.json"
RES = "ai_response.json"


def load_json(path):
    try:
        with open(path, "r", encoding="utf-8") as f:
            return json.load(f)
    except Exception:
        return None


def main():
    logging.basicConfig(level=logging.INFO, format="%(message)s")   # tampilkan "provider ready"
    ap = argparse.ArgumentParser(description="Centaur file-based LLM bridge")
    ap.add_argument("--files", default=r"D:\TradingTerminal\MetaTrader 5\MQL5\Files",
                    help="folder MQL5\\Files terminal (tempat request/response)")
    ap.add_argument("--interval", type=float, default=5.0,
                    help="polling interval (detik)")
    ap.add_argument("--once", action="store_true",
                    help="proses satu siklus lalu keluar (untuk uji)")
    ap.add_argument("--timeout", type=float, default=6.0,
                    help="timeout LLM per request (detik; default 6; worst-case 6+2+6=14s < EA 15s)")
    ap.add_argument("--min-gap", type=float, default=2.0,
                    help="jarak minimum antar panggilan LLM (detik; cegah rate limit)")
    args = ap.parse_args()

    ai = MarketAnalyzer(timeout=args.timeout)
    last_call = 0.0
    last_id = None
    warned_malformed = False
    req_path = os.path.join(args.files, REQ)
    res_path = os.path.join(args.files, RES)
    print("[assistant_bridge] dir=%s interval=%.1fs (file-based, dedupe by id)" % (args.files, args.interval))

    while True:
        req = load_json(req_path)
        if req is None and os.path.exists(req_path):
            if not warned_malformed:
                print("[assistant_bridge] WARNING: ai_request.json rusak/tak ter-parse — tunggu EA menulis ulang")
                warned_malformed = True
        else:
            warned_malformed = False
        if (isinstance(req, dict) and req.get("id") is not None and req["id"] != last_id
                and (last_call == 0.0 or time.time() - last_call >= args.min_gap)):
            # (last_id di-set dalam try di bawah)
            # (last_call di-set dalam try di bawah)
            # (t0 dihapus — latency_ms dari analyzer)
            result = ai.analyze(req)   # req = envelope SDP lengkap dari EA
            result["id"] = req["id"]
            result["timestamp"] = time.strftime("%Y-%m-%dT%H:%M:%S", time.gmtime())
            # P4: latency_ms diisi analyzer (satu sumber)
            tmp = res_path + ".tmp"
            with open(tmp, "w", encoding="utf-8") as f:
                json.dump(result, f)
            try:
                os.replace(tmp, res_path)   # atomic; P1: race dengan EA yang sedang membaca
                last_id = req["id"]         # tandai sukses SETELAH replace OK
                last_call = time.time()
            except OSError as exc:          # PermissionError dll — jangan mati, retry nanti
                print("[assistant_bridge] WARNING: replace gagal id=%s: %r — retry poll berikutnya"
                      % (req.get("id"), exc))
                try:
                    os.remove(tmp)
                except OSError:
                    pass
                time.sleep(0.5)
                continue   # gagal — lewati print sukses, retry id sama di poll berikut
            print("[assistant_bridge] id=%s score=%.2f fallback=%s latency=%d ms"
                  % (req["id"], result["score"], result.get("used_fallback"),
                     result["latency_ms"]))
        if args.once:
            break
        time.sleep(args.interval)


if __name__ == "__main__":
    main()