from django.http import HttpRequest, HttpResponse, JsonResponse
from django.shortcuts import render
from django.views.generic import TemplateView
from django.urls import reverse

from .filters import ParkFilter
from .forms import ParkSearchForm
from .querysets import get_base_park_queryset

class ParkSearchView(TemplateView):
    """View for handling park search with autocomplete."""
    template_name = "parks/park_list.html"

    def get_context_data(self, **kwargs):
        context = super().get_context_data(**kwargs)
        context['search_form'] = ParkSearchForm(self.request.GET)
        
        # Initialize filter with current querystring
        queryset = get_base_park_queryset()
        filter_instance = ParkFilter(self.request.GET, queryset=queryset)
        context['filter'] = filter_instance
        
        # Apply search if park ID selected via autocomplete
        park_id = self.request.GET.get('park')
        if park_id:
            queryset = filter_instance.qs.filter(id=park_id)
        else:
            queryset = filter_instance.qs
            
        # Handle view mode
        context['view_mode'] = self.request.GET.get('view_mode', 'grid')
        context['parks'] = queryset
        
        return context

def suggest_parks(request: HttpRequest) -> JsonResponse:
    """Return park search suggestions as JSON."""
    query = request.GET.get('search', '').strip()
    if not query:
        return JsonResponse({'results': []})
    
    queryset = get_base_park_queryset()
    filter_instance = ParkFilter({'search': query}, queryset=queryset)
    parks = filter_instance.qs[:8]  # Limit to 8 suggestions
    
    results = [{
        'id': str(park.pk),
        'name': park.name,
        'status': park.get_status_display(),
        'location': park.formatted_location or '',
        'url': reverse('parks:park_detail', kwargs={'slug': park.slug})
    } for park in parks]
    
    return JsonResponse({'results': results})