from django.shortcuts import render
from django.views.generic import TemplateView
from django.db.models import Count, Q, Value, CharField
from django.db.models.functions import Concat
from django.core.cache import cache
from parks.models import Park
from rides.models import Ride
from companies.models import Company, Manufacturer
from analytics.models import PageView
from django.conf import settings
import os
import secrets


def handler404(request, exception):
    return render(request, '404.html', status=404)

def handler500(request):
    return render(request, '500.html', status=500)

class HomeView(TemplateView):
    template_name = 'home.html'

    def get_context_data(self, **kwargs):
        context = super().get_context_data(**kwargs)
        
        # Get stats
        context['stats'] = {
            'total_parks': Park.objects.count(),
            'ride_count': Ride.objects.count(),
            'coaster_count': Ride.objects.filter(category='RC').count(),
        }
        
        # Try to get trending items from cache first
        trending_parks = cache.get('trending_parks')
        trending_rides = cache.get('trending_rides')

        # If not in cache, get them directly and cache them
        if trending_parks is None:
            try:
                trending_parks = list(PageView.get_trending_items(Park, hours=24, limit=10))
                if trending_parks:
                    cache.set('trending_parks', trending_parks, 3600)  # Cache for 1 hour
                else:
                    # Fallback to highest rated parks if no trending data
                    trending_parks = Park.objects.exclude(
                        average_rating__isnull=True
                    ).order_by('-average_rating')[:10]
            except Exception:
                # Fallback to highest rated parks if trending calculation fails
                trending_parks = Park.objects.exclude(
                    average_rating__isnull=True
                ).order_by('-average_rating')[:10]

        if trending_rides is None:
            try:
                trending_rides = list(PageView.get_trending_items(Ride, hours=24, limit=10))
                if trending_rides:
                    cache.set('trending_rides', trending_rides, 3600)  # Cache for 1 hour
                else:
                    # Fallback to highest rated rides if no trending data
                    trending_rides = Ride.objects.exclude(
                        average_rating__isnull=True
                    ).order_by('-average_rating')[:10]
            except Exception:
                # Fallback to highest rated rides if trending calculation fails
                trending_rides = Ride.objects.exclude(
                    average_rating__isnull=True
                ).order_by('-average_rating')[:10]

        # Get highest rated items (mix of parks and rides)
        highest_rated_parks = list(Park.objects.exclude(
            average_rating__isnull=True
        ).order_by('-average_rating')[:20])  # Get more items to randomly select from
        
        highest_rated_rides = list(Ride.objects.exclude(
            average_rating__isnull=True
        ).order_by('-average_rating')[:20])  # Get more items to randomly select from

        # Combine and shuffle highest rated items
        all_highest_rated = highest_rated_parks + highest_rated_rides
        secrets.SystemRandom().shuffle(all_highest_rated)
        
        # Keep the same context variable names for template compatibility
        context['popular_parks'] = trending_parks
        context['popular_rides'] = trending_rides
        context['highest_rated'] = all_highest_rated[:10]  # Take first 10 after shuffling
        
        return context

class SearchView(TemplateView):
    template_name = 'search_results.html'

    def get_context_data(self, **kwargs):
        context = super().get_context_data(**kwargs)
        
        if query := self.request.GET.get('q', '').strip():
            # Search parks
            context['parks'] = Park.objects.filter(
                Q(name__icontains=query) |
                Q(location__icontains=query) |
                Q(description__icontains=query)
            ).select_related('owner').prefetch_related('photos')[:10]

            # Search rides
            context['rides'] = Ride.objects.filter(
                Q(name__icontains=query) |
                Q(description__icontains=query) |
                Q(manufacturer__name__icontains=query)
            ).select_related('park', 'coaster_stats').prefetch_related('photos')[:10]

            # Search companies
            context['companies'] = Company.objects.filter(
                Q(name__icontains=query) |
                Q(headquarters__icontains=query) |
                Q(description__icontains=query)
            ).prefetch_related('parks')[:10]

            # Search manufacturers
            context['manufacturers'] = Manufacturer.objects.filter(
                Q(name__icontains=query) |
                Q(headquarters__icontains=query) |
                Q(description__icontains=query)
            ).prefetch_related('rides')[:10]

        return context

def environment_and_settings_view(request):
    # Get all environment variables
    env_vars = dict(os***REMOVED***iron)
    
    # Get all Django settings as a dictionary
    settings_vars = {setting: getattr(settings, setting) for setting in dir(settings) if setting.isupper()}
    
    return render(request, 'environment_and_settings.html', {
        'env_vars': env_vars,
        'settings_vars': settings_vars
    })