# ml_engine/data_manager.py
# (V13.2 - GEM-Architect: Added Order Book Capability)

import os
import asyncio
import httpx
import traceback
import ccxt.async_support as ccxt
import logging
from typing import List, Dict, Any

# إعدادات التسجيل
logging.getLogger("httpx").setLevel(logging.WARNING)
logging.getLogger("httpcore").setLevel(logging.WARNING)
logging.getLogger("ccxt").setLevel(logging.WARNING)

class DataManager:
    def __init__(self, contracts_db, whale_monitor, r2_service=None):
        # ==================================================================
        # ⚙️ إعدادات التحكم
        # ==================================================================
        self.contracts_db = contracts_db or {}
        self.whale_monitor = whale_monitor
        self.r2_service = r2_service
        
        # إعداد المنصة (KuCoin)
        self.exchange = ccxt.kucoin({
            'enableRateLimit': True,
            'timeout': 30000,
        })
            
        self.http_client = None
        self.market_cache = {}

    async def initialize(self):
        """تهيئة مدير البيانات والاتصالات"""
        print("   > [DataManager] Starting initialization...")
        self.http_client = httpx.AsyncClient(timeout=30.0)
        await self._load_markets()
        print(f"✅ [DataManager V13.2] Ready (Order Book Enabled).")

    async def _load_markets(self):
        """تحميل بيانات الأسواق وتخزينها مؤقتاً"""
        try:
            if self.exchange:
                await self.exchange.load_markets()
                self.market_cache = self.exchange.markets
        except Exception as e:
            print(f"❌ [DataManager] Market load failed: {e}")
            traceback.print_exc()

    async def close(self):
        """إغلاق جميع الاتصالات بأمان"""
        print("   > [DataManager] Closing connections...")
        if self.http_client: await self.http_client.aclose()
        if self.exchange: await self.exchange.close()

    # ==================================================================
    # 🚀 R2 Compatibility
    # ==================================================================
    async def load_contracts_from_r2(self):
        if not self.r2_service: return
        try:
            self.contracts_db = await self.r2_service.load_contracts_db_async()
            print(f"✅ [DataManager] Contracts loaded: {len(self.contracts_db)}")
        except Exception:
            self.contracts_db = {}

    def get_contracts_db(self) -> Dict[str, Any]:
        return self.contracts_db
    
    # ==================================================================
    # 🛡️ Layer 1 Screening (Data Filter)
    # ==================================================================
    async def layer1_rapid_screening(self) -> List[Dict[str, Any]]:
        """الغربلة الأولية السريعة بناءً على الحجم والسيولة."""
        print(f"🔍 [Layer 1] Screening top liquid assets...")
        volume_data = await self._get_volume_data_live()
        
        if not volume_data:
            return []

        # نأخذ أعلى 150 عملة
        candidates = volume_data[:150]
        return candidates

    async def _get_volume_data_live(self):
        """جلب وترتيب العملات حسب حجم التداول"""
        try:
            tickers = await self.exchange.fetch_tickers()
            data = []
            for symbol, ticker in tickers.items():
                if symbol.endswith('/USDT') and ticker.get('quoteVolume') and ticker['quoteVolume'] > 100000:
                    data.append({
                        'symbol': symbol,
                        'dollar_volume': ticker['quoteVolume'],
                        'current_price': ticker['last']
                    })
            data.sort(key=lambda x: x['dollar_volume'], reverse=True)
            return data
        except Exception:
            return []

    # ==================================================================
    # 🎯 Data Fetching Helpers
    # ==================================================================
    async def get_latest_price_async(self, symbol: str) -> float:
        try:
            ticker = await self.exchange.fetch_ticker(symbol)
            return float(ticker['last'])
        except Exception:
            return 0.0

    async def get_latest_ohlcv(self, symbol: str, timeframe: str = '5m', limit: int = 100) -> List[List[float]]:
        try:
            candles = await self.exchange.fetch_ohlcv(symbol, timeframe, limit=limit)
            if candles: return candles
            return []
        except Exception:
            return []

    # 🔥 [NEW] Order Book Fetcher
    async def get_order_book_snapshot(self, symbol: str, limit: int = 20) -> Dict[str, Any]:
        """
        جلب لقطة سريعة لدفتر الطلبات (Bids/Asks).
        يستخدم لتحليل عمق السوق وتأكيد القناص.
        """
        try:
            # ccxt يرجع الدفتر بصيغة {'bids': [[price, size], ...], 'asks': ...}
            ob = await self.exchange.fetch_order_book(symbol, limit)
            return ob
        except Exception as e:
            # طباعة خطأ خفيف لتجنب إغراق السجلات
            # print(f"⚠️ [DataManager] Failed to fetch OB for {symbol}: {e}")
            return {}