"""
Kalshi Speed Bot — WebSocket-driven, single-model (qwen3.5:4b-mlx), split-second decisions.
"""
import os, sys, json, time, sqlite3, base64, threading, re
from datetime import datetime, timezone
from collections import deque
import requests
import websocket

from cryptography.hazmat.primitives import serialization, hashes
from cryptography.hazmat.primitives.asymmetric import padding

# ── Config ──
KALSHI_REST = "https://api.elections.kalshi.com/trade-api/v2"
KALSHI_WS = "wss://external-api-ws.kalshi.com/trade-api/ws/v2"
OLLAMA_URL = "http://localhost:11434"
MODEL = "qwen3.5:4b-mlx"

# ── Auth (RSA-PSS-SHA256, same as existing bot) ──
KEY_PATH = os.path.expanduser("~/kalshi-bot/kalshi_private_key.pem")
KEY_ID = "28d5876b"

with open(KEY_PATH, "rb") as f:
    PK = serialization.load_pem_private_key(f.read(), password=None)

def sign(method, path):
    ts = str(int(time.time() * 1000))
    msg = (ts + method.upper() + path.split("?")[0]).encode()
    sig = PK.sign(msg, padding.PSS(mgf=padding.MGF1(hashes.SHA256()),
                   salt_length=padding.PSS.DIGEST_LENGTH), hashes.SHA256())
    return {
        "KALSHI-ACCESS-KEY": KEY_ID,
        "KALSHI-ACCESS-SIGNATURE": base64.b64encode(sig).decode(),
        "KALSHI-ACCESS-TIMESTAMP": ts,
    }

def kx(method, path, body=None):
    h = sign(method, path)
    h["Content-Type"] = "application/json"
    r = requests.request(method, KALSHI_REST + path, headers=h, json=body, timeout=10)
    return r.json() if r.status_code in (200,201) else {"error": r.status_code, "text": r.text[:200]}

# ── Market Utils ──
def get_open_markets():
    """Get currently open 15-min crypto markets."""
    r = requests.get(f"{KALSHI_REST}/markets?status=open&limit=100", timeout=10)
    if r.status_code != 200:
        return []
    markets = r.json().get("markets", [])
    return [m for m in markets if "15M" in m.get("ticker","") and m.get("ticker","").startswith("KX")]

def get_ticker(market_ticker):
    r = requests.get(f"{KALSHI_REST}/markets/{market_ticker}", timeout=5)
    m = r.json().get("market", r.json())
    return m

# ── Fast LLM Vote ──
def fast_vote(context: str) -> tuple[str, float, str]:
    """Single call to qwen3.5:4b-mlx. Returns (UP|DOWN|SKIP, confidence, why)."""
    prompt = f"""Crypto 15-min binary. {context}
Vote UP DOWN or SKIP. Respond ONLY with JSON: {{"vote":"UP|DOWN|SKIP","conf":0.0-1.0,"why":"<10 words>"}}"""
    try:
        r = requests.post(f"{OLLAMA_URL}/api/generate",
            json={"model": MODEL, "prompt": prompt, "stream": False,
                  "options": {"temperature": 0.15, "num_predict": 40}},
            timeout=8, proxies={"http": None, "https": None})
        txt = r.json().get("response", "")
        s, e = txt.find("{"), txt.rfind("}")+1
        d = json.loads(txt[s:e]) if s >= 0 else {}
        v = str(d.get("vote", "SKIP")).upper()
        if v not in ("UP", "DOWN", "SKIP"):
            v = "SKIP"
        return v, float(d.get("conf", 0.5)), str(d.get("why", ""))[:80]
    except Exception as e:
        return "SKIP", 0.0, f"llm_err:{e}"[:40]

# ── Indicators ──
def compute_rsi(prices, period=14):
    if len(prices) < period + 1:
        return 50.0
    gains = [max(prices[i] - prices[i-1], 0) for i in range(1, len(prices))]
    losses = [max(prices[i-1] - prices[i], 0) for i in range(1, len(prices))]
    avg_gain = sum(gains[-period:]) / period
    avg_loss = sum(losses[-period:]) / period
    if avg_loss == 0:
        return 100.0
    return 100.0 - (100.0 / (1.0 + avg_gain / avg_loss))

# ── WebSocket Client ──
class SpeedBot:
    def __init__(self, coin="DOGE", dry_run=True, max_spend=50):
        self.coin = coin.upper()
        self.dry_run = dry_run
        self.max_spend = max_spend
        self.prices = deque(maxlen=60)  # 5 min at 1 tick/sec
        self.last_decision = 0
        self.decision_cooldown = 120  # seconds between LLM calls
        self.ws = None
        self.running = False
        self.db = sqlite3.connect(os.path.expanduser(f"~/kalshi-bot/speed_{coin.lower()}.db"))
        self._init_db()
        
    def _init_db(self):
        self.db.execute("CREATE TABLE IF NOT EXISTS ticks (ts REAL, price REAL, volume INTEGER)")
        self.db.execute("CREATE TABLE IF NOT EXISTS decisions (ts REAL, ticker TEXT, vote TEXT, conf REAL, why TEXT, action TEXT)")
        self.db.commit()
    
    def on_open(self, ws):
        print(f"[speed-{self.coin}] WebSocket connected")
        # Subscribe to ticker for this coin's markets
        sub = {
            "type": "subscribe",
            "channels": ["ticker"],
            "params": {"market_tickers": []}  # All markets initially
        }
        ws.send(json.dumps(sub))
    
    def on_message(self, ws, raw):
        try:
            msg = json.loads(raw)
        except json.JSONDecodeError:
            return
        
        msg_type = msg.get("type", "")
        
        if msg_type == "subscribed":
            sids = msg.get("sids", [])
            print(f"[speed-{self.coin}] Subscribed: {sids}")
            # Update subscription to only our coin's markets
            markets = get_open_markets()
            our_markets = [m["ticker"] for m in markets if self.coin in m.get("ticker", "")]
            if our_markets and sids:
                update = {
                    "type": "update_subscription",
                    "sids": sids,
                    "params": {"action": "add_markets", "market_tickers": our_markets}
                }
                ws.send(json.dumps(update))
                print(f"[speed-{self.coin}] Targeting: {our_markets}")
        
        elif msg_type == "ticker":
            self._process_ticker(msg)
    
    def _process_ticker(self, msg):
        ticker = msg.get("market_ticker", "")
        if self.coin not in ticker:
            return
        
        price = float(msg.get("last_price", 0) or 0)
        if price <= 0:
            return
        
        self.prices.append(price)
        self.db.execute("INSERT INTO ticks VALUES (?,?,?)",
                       (time.time(), price, msg.get("volume", 0) or 0))
        self.db.commit()
        
        # Check decision cooldown
        now = time.time()
        if now - self.last_decision < self.decision_cooldown:
            return
        
        # Need enough data
        if len(self.prices) < 20:
            return
        
        self.last_decision = now
        self._decide(ticker, price)
    
    def _decide(self, ticker, price):
        prices = list(self.prices)
        rsi14 = compute_rsi(prices)
        
        # Compute momentum over last 5 prices
        if len(prices) >= 6:
            short_ma = sum(prices[-3:]) / 3
            long_ma = sum(prices[-6:]) / 6
            mom = (short_ma / long_ma - 1) * 100
        else:
            mom = 0
        
        # Gate: RSI extremes with momentum confirmation
        if rsi14 > 92 and mom < 0:
            vote, conf, why = "DOWN", 0.85, "RSI extreme+fading"
        elif rsi14 < 8 and mom > 0:
            vote, conf, why = "UP", 0.85, "RSI oversold+bouncing"
        elif rsi14 > 85 or rsi14 < 15:
            # Borderline — skip, let LLM handle next cycle
            return
        else:
            # Build compact context
            ctx = f"coin={self.coin} price={price:.2f} RSI14={rsi14:.1f} 5tick_mom={mom:+.2f}%"
            vote, conf, why = fast_vote(ctx)
        
        # Minimum confidence
        if conf < 0.55:
            self.db.execute("INSERT INTO decisions VALUES (?,?,?,?,?,?)",
                          (time.time(), ticker, vote, conf, why, "SKIP_low_conf"))
            self.db.commit()
            return
        
        # Execute
        side = "yes" if vote == "UP" else "no"
        order = {
            "ticker": ticker,
            "client_order_id": f"speed_{int(time.time())}",
            "side": side,
            "type": "market",
            "count": 1,
            "buy_max_cost": self.max_spend,
        }
        
        if self.dry_run:
            print(f"[speed-{self.coin}] DRY {vote} {ticker} @ {price:.2f} | RSI={rsi14:.1f} mom={mom:+.2f}% | {why}")
        else:
            result = kx("POST", "/portfolio/orders", order)
            action = f"{side}_order_{result.get('order_id','err')}"
            print(f"[speed-{self.coin}] LIVE {vote} {ticker} {result}")
        
        self.db.execute("INSERT INTO decisions VALUES (?,?,?,?,?,?)",
                      (time.time(), ticker, vote, conf, why,
                       "DRY" if self.dry_run else f"LIVE_{side}"))
        self.db.commit()
    
    def on_error(self, ws, error):
        print(f"[speed-{self.coin}] WS error: {error}")
    
    def on_close(self, ws, code, msg):
        print(f"[speed-{self.coin}] WS closed: {code} {msg}")
        self.running = False
    
    def run(self):
        self.running = True
        print(f"[speed-{self.coin}] Starting speed bot (dry_run={self.dry_run}, model={MODEL})")
        
        while self.running:
            try:
                self.ws = websocket.WebSocketApp(
                    KALSHI_WS,
                    header=self._ws_headers(),
                    on_open=self.on_open,
                    on_message=self.on_message,
                    on_error=self.on_error,
                    on_close=self.on_close,
                )
                self.ws.run_forever(ping_interval=30, ping_timeout=10)
            except Exception as e:
                print(f"[speed-{self.coin}] Reconnecting in 5s: {e}")
                time.sleep(5)
    
    def _ws_headers(self):
        ts = str(int(time.time() * 1000))
        path = "/trade-api/ws/v2"
        msg = f"{ts}GET{path}".encode()
        sig = base64.b64encode(hmac.HMAC(KEY, msg, hashlib.sha256).digest()).decode()
        return {
            "KALSHI-ACCESS-KEY": KEY_ID,
            "KALSHI-ACCESS-SIGNATURE": sig,
            "KALSHI-ACCESS-TIMESTAMP": ts,
        }


if __name__ == "__main__":
    import argparse
    ap = argparse.ArgumentParser()
    ap.add_argument("--coin", default="DOGE")
    ap.add_argument("--dry", action="store_true", default=True)
    ap.add_argument("--live", dest="dry", action="store_false")
    ap.add_argument("--max", type=int, default=50, help="Max spend cents per trade")
    args = ap.parse_args()
    
    bot = SpeedBot(coin=args.coin, dry_run=args.dry, max_spend=args.max)
    bot.run()