"""
Utility views for miscellaneous API endpoints
"""
from rest_framework.views import APIView
from rest_framework.response import Response
from rest_framework import permissions


class GeoDetectView(APIView):
    """
    Detect user's country from request headers.
    
    Uses Cloudflare's CF-IPCountry header if behind Cloudflare,
    otherwise falls back to checking X-Country-Code or other headers.
    
    This endpoint is used by the frontend to determine which signup page
    to show (/signup for global, /signup/pk for Pakistan).
    """
    permission_classes = [permissions.AllowAny]
    
    def get(self, request):
        # Try Cloudflare header first (most reliable when behind CF)
        country_code = request.META.get('HTTP_CF_IPCOUNTRY', '')
        
        # Fallback to X-Country-Code header (can be set by load balancer/CDN)
        if not country_code:
            country_code = request.META.get('HTTP_X_COUNTRY_CODE', '')
        
        # Fallback to GeoIP2 if available (Django GeoIP2 middleware)
        if not country_code:
            country_code = getattr(request, 'country_code', '')
        
        # Default to empty string (frontend will treat as global)
        country_code = country_code.upper() if country_code else ''
        
        return Response({
            'success': True,
            'data': {
                'country_code': country_code,
                'detected': bool(country_code),
            }
        })