from motor.motor_asyncio import AsyncIOMotorClient
from config import settings
import logging

logger = logging.getLogger(__name__)

class MongoDB:
    client: AsyncIOMotorClient = None
    db = None

    async def connect(self):
        """Establish MongoDB connection."""
        logger.info(f"Attempting to connect to MongoDB: {settings.MONGODB_DB_NAME}")
        self.client = AsyncIOMotorClient(
            settings.MONGODB_URL,
            serverSelectionTimeoutMS=10000,
            connectTimeoutMS=20000,
            tlsAllowInvalidCertificates=True # Helps in environments with strict firewalls or old CA certs
        )
        self.db = self.client[settings.MONGODB_DB_NAME]
        # Verify connection immediately
        await self.client.admin.command('ping')
        logger.info(f"Connected to MongoDB: {settings.MONGODB_DB_NAME}")

    async def close(self):
        """Close MongoDB connection."""
        if self.client:
            self.client.close()
            logger.info("Closed MongoDB connection")

# Singleton instance
db = MongoDB()