#!/usr/bin/env python3
"""
Example usage of Binance connector.
"""

import asyncio
import sys
from pathlib import Path

# Add COBY to path
sys.path.insert(0, str(Path(__file__).parent.parent))

from connectors.binance_connector import BinanceConnector
from utils.logging import setup_logging, get_logger
from models.core import OrderBookSnapshot, TradeEvent

# Setup logging
setup_logging(level='INFO', console_output=True)
logger = get_logger(__name__)


class BinanceExample:
    """Example Binance connector usage"""
    
    def __init__(self):
        self.connector = BinanceConnector()
        self.orderbook_count = 0
        self.trade_count = 0
        
        # Add data callbacks
        self.connector.add_data_callback(self.on_data_received)
        self.connector.add_status_callback(self.on_status_changed)
    
    def on_data_received(self, data):
        """Handle received data"""
        if isinstance(data, OrderBookSnapshot):
            self.orderbook_count += 1
            logger.info(
                f"📊 Order Book {self.orderbook_count}: {data.symbol} - "
                f"Mid: ${data.mid_price:.2f}, Spread: ${data.spread:.2f}, "
                f"Bids: {len(data.bids)}, Asks: {len(data.asks)}"
            )
            
        elif isinstance(data, TradeEvent):
            self.trade_count += 1
            logger.info(
                f"💰 Trade {self.trade_count}: {data.symbol} - "
                f"{data.side.upper()} {data.size} @ ${data.price:.2f}"
            )
    
    def on_status_changed(self, exchange, status):
        """Handle status changes"""
        logger.info(f"🔄 {exchange} status changed to: {status.value}")
    
    async def run_example(self):
        """Run the example"""
        try:
            logger.info("🚀 Starting Binance connector example")
            
            # Connect to Binance
            logger.info("🔌 Connecting to Binance...")
            connected = await self.connector.connect()
            
            if not connected:
                logger.error("❌ Failed to connect to Binance")
                return
            
            logger.info("✅ Connected to Binance successfully")
            
            # Get available symbols
            logger.info("📋 Getting available symbols...")
            symbols = await self.connector.get_symbols()
            logger.info(f"📋 Found {len(symbols)} trading symbols")
            
            # Show some popular symbols
            popular_symbols = ['BTCUSDT', 'ETHUSDT', 'ADAUSDT', 'BNBUSDT']
            available_popular = [s for s in popular_symbols if s in symbols]
            logger.info(f"📋 Popular symbols available: {available_popular}")
            
            # Get order book snapshot
            if 'BTCUSDT' in symbols:
                logger.info("📊 Getting BTC order book snapshot...")
                orderbook = await self.connector.get_orderbook_snapshot('BTCUSDT', depth=10)
                if orderbook:
                    logger.info(
                        f"📊 BTC Order Book: Mid=${orderbook.mid_price:.2f}, "
                        f"Spread=${orderbook.spread:.2f}"
                    )
            
            # Subscribe to real-time data
            logger.info("🔔 Subscribing to real-time data...")
            
            # Subscribe to BTC order book and trades
            if 'BTCUSDT' in symbols:
                await self.connector.subscribe_orderbook('BTCUSDT')
                await self.connector.subscribe_trades('BTCUSDT')
                logger.info("✅ Subscribed to BTCUSDT order book and trades")
            
            # Subscribe to ETH order book
            if 'ETHUSDT' in symbols:
                await self.connector.subscribe_orderbook('ETHUSDT')
                logger.info("✅ Subscribed to ETHUSDT order book")
            
            # Let it run for a while
            logger.info("⏳ Collecting data for 30 seconds...")
            await asyncio.sleep(30)
            
            # Show statistics
            stats = self.connector.get_binance_stats()
            logger.info("📈 Final Statistics:")
            logger.info(f"   📊 Order books received: {self.orderbook_count}")
            logger.info(f"   💰 Trades received: {self.trade_count}")
            logger.info(f"   📡 Total messages: {stats['message_count']}")
            logger.info(f"   ❌ Errors: {stats['error_count']}")
            logger.info(f"   🔗 Active streams: {stats['active_streams']}")
            logger.info(f"   📋 Subscriptions: {list(stats['subscriptions'].keys())}")
            
            # Unsubscribe and disconnect
            logger.info("🔌 Cleaning up...")
            
            if 'BTCUSDT' in self.connector.subscriptions:
                await self.connector.unsubscribe_orderbook('BTCUSDT')
                await self.connector.unsubscribe_trades('BTCUSDT')
            
            if 'ETHUSDT' in self.connector.subscriptions:
                await self.connector.unsubscribe_orderbook('ETHUSDT')
            
            await self.connector.disconnect()
            logger.info("✅ Disconnected successfully")
            
        except KeyboardInterrupt:
            logger.info("⏹️ Interrupted by user")
        except Exception as e:
            logger.error(f"❌ Example failed: {e}")
        finally:
            # Ensure cleanup
            try:
                await self.connector.disconnect()
            except:
                pass


async def main():
    """Main function"""
    example = BinanceExample()
    await example.run_example()


if __name__ == "__main__":
    print("Binance Connector Example")
    print("=" * 25)
    print("This example will:")
    print("1. Connect to Binance WebSocket")
    print("2. Get available trading symbols")
    print("3. Subscribe to real-time order book and trade data")
    print("4. Display received data for 30 seconds")
    print("5. Show statistics and disconnect")
    print()
    print("Press Ctrl+C to stop early")
    print("=" * 25)
    
    try:
        asyncio.run(main())
    except KeyboardInterrupt:
        print("\n👋 Example stopped by user")
    except Exception as e:
        print(f"\n❌ Example failed: {e}")
        sys.exit(1)