# ================================================================
# services/data/app/external/base_client.py
# ================================================================
"""Base HTTP client for external APIs"""

import httpx
from typing import Dict, Any, Optional
import structlog
from datetime import datetime

logger = structlog.get_logger()

class BaseAPIClient:
    
    def __init__(self, base_url: str, api_key: Optional[str] = None):
        self.base_url = base_url
        self.api_key = api_key
        self.timeout = httpx.Timeout(30.0)
    
    async def _get(self, endpoint: str, params: Optional[Dict] = None, headers: Optional[Dict] = None) -> Optional[Dict[str, Any]]:
        """Make GET request"""
        try:
            url = f"{self.base_url}{endpoint}"
            
            # Add API key to headers if available
            request_headers = headers or {}
            if self.api_key:
                request_headers["Authorization"] = f"Bearer {self.api_key}"
            
            async with httpx.AsyncClient(timeout=self.timeout) as client:
                response = await client.get(url, params=params, headers=request_headers)
                response.raise_for_status()
                return response.json()
                
        except httpx.HTTPStatusError as e:
            logger.error("HTTP error", status_code=e.response.status_code, url=url)
            return None
        except httpx.RequestError as e:
            logger.error("Request error", error=str(e), url=url)
            return None
        except Exception as e:
            logger.error("Unexpected error", error=str(e), url=url)
            return None
    
    async def _post(self, endpoint: str, data: Optional[Dict] = None, headers: Optional[Dict] = None) -> Optional[Dict[str, Any]]:
        """Make POST request"""
        try:
            url = f"{self.base_url}{endpoint}"
            
            request_headers = headers or {}
            if self.api_key:
                request_headers["Authorization"] = f"Bearer {self.api_key}"
            
            async with httpx.AsyncClient(timeout=self.timeout) as client:
                response = await client.post(url, json=data, headers=request_headers)
                response.raise_for_status()
                return response.json()
                
        except httpx.HTTPStatusError as e:
            logger.error("HTTP error", status_code=e.response.status_code, url=url)
            return None
        except httpx.RequestError as e:
            logger.error("Request error", error=str(e), url=url)
            return None
        except Exception as e:
            logger.error("Unexpected error", error=str(e), url=url)
            return None