"""
Logging middleware for gateway
"""

import logging
import time
from fastapi import Request
import json

logger = logging.getLogger(__name__)

async def logging_middleware(request: Request, call_next):
    """Logging middleware"""
    
    start_time = time.time()
    
    # Log request
    logger.info(
        f"Request: {request.method} {request.url.path}",
        extra={
            "method": request.method,
            "url": request.url.path,
            "query_params": str(request.query_params),
            "client_host": request.client.host,
            "user_agent": request.headers.get("user-agent", ""),
            "request_id": getattr(request.state, 'request_id', None)
        }
    )
    
    # Process request
    response = await call_next(request)
    
    # Calculate duration
    duration = time.time() - start_time
    
    # Log response
    logger.info(
        f"Response: {response.status_code} in {duration:.3f}s",
        extra={
            "status_code": response.status_code,
            "duration": duration,
            "method": request.method,
            "url": request.url.path,
            "request_id": getattr(request.state, 'request_id', None)
        }
    )
    
    return response