#!/usr/bin/env python3
"""
Hyperliquid Manual Trading Bot - Main Launcher

A simple launcher for systemd deployment.
This is the ONLY file you need to run - it handles everything.
"""

import sys
import os
import asyncio
import logging
import signal
from datetime import datetime
from pathlib import Path

# Bot version
BOT_VERSION = "2.1.1"

# Add src directory to Python path
sys.path.insert(0, str(Path(__file__).parent / "src"))

try:
    from config import Config
    from telegram_bot import TelegramTradingBot
    from trading_stats import TradingStats
except ImportError as e:
    print(f"❌ Import error: {e}")
    print("💡 Make sure you're in the correct directory and dependencies are installed")
    sys.exit(1)

# Global variables for graceful shutdown
bot_instance = None
is_shutting_down = False

class BotManager:
    """Manages the trading bot with simple startup and shutdown."""
    
    def __init__(self):
        self.bot = None
        self.setup_logging()
        
        # Ensure logs directory exists
        os.makedirs("logs", exist_ok=True)
    
    def setup_logging(self):
        """Set up comprehensive logging."""
        # Create logs directory
        os.makedirs("logs", exist_ok=True)
        
        # Set up file logging
        log_file = f"logs/trading_bot_{datetime.now().strftime('%Y%m%d')}.log"
        
        logging.basicConfig(
            level=getattr(logging, Config.LOG_LEVEL if hasattr(Config, 'LOG_LEVEL') else 'INFO'),
            format='%(asctime)s - %(name)s - %(levelname)s - %(message)s',
            handlers=[
                logging.FileHandler(log_file),
                logging.StreamHandler(sys.stdout)
            ]
        )
        
        self.logger = logging.getLogger(__name__)
        self.logger.info(f"Logging initialized - Log file: {log_file}")
    
    def print_banner(self):
        """Print startup banner."""
        banner = f"""
╔══════════════════════════════════════════════════════════════╗
║                    📱 HYPERLIQUID TRADING BOT                ║
║                       Version {BOT_VERSION}                       ║
╠══════════════════════════════════════════════════════════════╣
║                                                              ║
║  🤖 Manual phone control via Telegram                       ║
║  📊 Comprehensive trading statistics                        ║
║  🛡️ Systemd managed service                                 ║
║  💾 Persistent data between restarts                        ║
║  📱 Professional mobile interface                            ║
║                                                              ║
╚══════════════════════════════════════════════════════════════╝

🚀 Starting at: {datetime.now().strftime('%Y-%m-%d %H:%M:%S')}
📁 Working directory: {os.getcwd()}
🌐 Network: {'Testnet' if Config.HYPERLIQUID_TESTNET else '🚨 MAINNET 🚨'}
        """
        print(banner)
    
    def validate_configuration(self):
        """Validate bot configuration."""
        self.logger.info("🔍 Validating configuration...")
        
        missing_config = []
        
        if not hasattr(Config, 'HYPERLIQUID_WALLET_ADDRESS') or not Config.HYPERLIQUID_WALLET_ADDRESS:
            missing_config.append("HYPERLIQUID_WALLET_ADDRESS")
        
        if not hasattr(Config, 'TELEGRAM_BOT_TOKEN') or not Config.TELEGRAM_BOT_TOKEN:
            missing_config.append("TELEGRAM_BOT_TOKEN")
        
        if not hasattr(Config, 'TELEGRAM_CHAT_ID') or not Config.TELEGRAM_CHAT_ID:
            missing_config.append("TELEGRAM_CHAT_ID")
        
        if not hasattr(Config, 'TELEGRAM_ENABLED') or not Config.TELEGRAM_ENABLED:
            missing_config.append("TELEGRAM_ENABLED (must be true)")
        
        if missing_config:
            error_msg = f"❌ Missing configuration: {', '.join(missing_config)}"
            self.logger.error(error_msg)
            print(f"\n{error_msg}")
            print("\n💡 Setup steps:")
            print("1. Copy config: cp config/env.example .env")
            print("2. Get Telegram setup: python utils/get_telegram_chat_id.py")
            print("3. Edit .env with your details")
            print("4. See: SETUP_GUIDE.md for detailed instructions")
            return False
        
        self.logger.info("✅ Configuration validation passed")
        return True
    
    def check_stats_persistence(self):
        """Check and report on statistics persistence."""
        stats_file = "trading_stats.json"
        if os.path.exists(stats_file):
            try:
                stats = TradingStats()
                basic_stats = stats.get_basic_stats()
                self.logger.info(f"📊 Existing stats found - {basic_stats['total_trades']} trades since {basic_stats.get('start_date', 'unknown')}")
                return True
            except Exception as e:
                self.logger.warning(f"⚠️ Stats file exists but couldn't load: {e}")
                return False
        else:
            self.logger.info("📊 No existing stats - will create new tracking from launch")
            return False
    
    async def run_bot(self):
        """Run the main bot."""
        global is_shutting_down
        
        try:
            self.logger.info("🤖 Creating TelegramTradingBot instance...")
            self.bot = TelegramTradingBot()
            
            # Set version for bot to use in messages
            self.bot.version = BOT_VERSION
            
            self.logger.info("📊 Checking statistics persistence...")
            self.check_stats_persistence()
            
            self.logger.info("🚀 Starting Telegram bot...")
            
            # Run the bot
            await self.bot.run()
            
        except KeyboardInterrupt:
            self.logger.info("👋 Bot stopped by user (Ctrl+C)")
            is_shutting_down = True
            
        except Exception as e:
            self.logger.error(f"❌ Bot error: {e}")
            raise
    
    async def start(self):
        """Main entry point."""
        try:
            self.print_banner()
            
            if not self.validate_configuration():
                return False
            
            self.logger.info("🎯 All systems ready - starting trading bot...")
            print("💡 Send /start to your Telegram bot for quick actions")
            print("🛑 Press Ctrl+C to stop\n")
            
            await self.run_bot()
            
            return True
            
        except Exception as e:
            self.logger.error(f"❌ Fatal error in bot manager: {e}")
            print(f"\n💥 Fatal error: {e}")
            return False

def signal_handler(signum, frame):
    """Handle shutdown signals gracefully."""
    global is_shutting_down, bot_instance
    
    print("\n🛑 Shutdown signal received...")
    is_shutting_down = True

def main():
    """Main function."""
    global bot_instance
    
    # Set up signal handlers for graceful shutdown
    signal.signal(signal.SIGINT, signal_handler)
    signal.signal(signal.SIGTERM, signal_handler)
    
    try:
        bot_manager = BotManager()
        bot_instance = bot_manager
        
        # Run the bot
        success = asyncio.run(bot_manager.start())
        
        if success:
            print("\n✅ Bot session completed successfully")
        else:
            print("\n❌ Bot session failed")
            sys.exit(1)
            
    except KeyboardInterrupt:
        print("\n👋 Bot stopped by user")
    except Exception as e:
        print(f"\n💥 Unexpected error: {e}")
        sys.exit(1)
    finally:
        print("📊 Your trading statistics have been saved")

if __name__ == "__main__":
    main()