from typing import Any, Dict, Optional, Tuple, Union, cast, Type
from django.views.generic import DetailView, ListView, CreateView, UpdateView
from django.shortcuts import get_object_or_404, render
from django.urls import reverse
from django.db.models import Q, Model
from django.contrib.auth.mixins import LoginRequiredMixin
from django.contrib.contenttypes.models import ContentType
from django.contrib import messages
from django.http import HttpRequest, HttpResponse, Http404
from django.db.models import Count
from .models import (
    Ride, RollerCoasterStats, RideModel,
    CATEGORY_CHOICES, Company
)
from .forms import RideForm, RideSearchForm
from parks.models import Park
from core.views.views import SlugRedirectMixin
from moderation.mixins import EditSubmissionMixin, PhotoSubmissionMixin, HistoryMixin
from moderation.models import EditSubmission


class ParkContextRequired:
    """Mixin to require park context for views"""

    def dispatch(self, request, *args, **kwargs):
        if 'park_slug' not in self.kwargs:
            raise Http404("Park context is required")
        return super().dispatch(request, *args, **kwargs)


def show_coaster_fields(request: HttpRequest) -> HttpResponse:
    """Show roller coaster specific fields based on category selection"""
    category = request.GET.get('category')
    if category != 'RC':  # Only show for roller coasters
        return HttpResponse('')
    return render(request, "rides/partials/coaster_fields.html")


class RideDetailView(HistoryMixin, DetailView):
    """View for displaying ride details"""
    model = Ride
    template_name = 'rides/ride_detail.html'
    slug_url_kwarg = 'ride_slug'

    def get_queryset(self):
        """Get ride for the specific park if park_slug is provided"""
        queryset = Ride.objects.all().select_related(
            'park',
            'ride_model',
            'ride_model__manufacturer'
        ).prefetch_related('photos')

        if 'park_slug' in self.kwargs:
            queryset = queryset.filter(park__slug=self.kwargs['park_slug'])

        return queryset

    def get_context_data(self, **kwargs):
        """Add context data"""
        context = super().get_context_data(**kwargs)
        if 'park_slug' in self.kwargs:
            context['park_slug'] = self.kwargs['park_slug']
            context['park'] = self.object.park

        return context


class RideCreateView(LoginRequiredMixin, ParkContextRequired, CreateView):
    """View for creating a new ride"""
    model = Ride
    form_class = RideForm
    template_name = 'rides/ride_form.html'

    def get_success_url(self):
        """Get URL to redirect to after successful creation"""
        return reverse('parks:rides:ride_detail', kwargs={
            'park_slug': self.park.slug,
            'ride_slug': self.object.slug
        })

    def get_form_kwargs(self):
        """Pass park to the form"""
        kwargs = super().get_form_kwargs()
        self.park = get_object_or_404(Park, slug=self.kwargs['park_slug'])
        kwargs['park'] = self.park
        return kwargs

    def get_context_data(self, **kwargs):
        """Add park and park_slug to context"""
        context = super().get_context_data(**kwargs)
        context['park'] = self.park
        context['park_slug'] = self.park.slug
        context['is_edit'] = False
        return context

    def form_valid(self, form):
        """Handle form submission including new items"""
        # Check for new manufacturer
        manufacturer_name = form.cleaned_data.get('manufacturer_search')
        if manufacturer_name and not form.cleaned_data.get('manufacturer'):
            EditSubmission.objects.create(
                user=self.request.user,
                content_type=ContentType.objects.get_for_model(Company),
                submission_type="CREATE",
                changes={"name": manufacturer_name, "roles": ["MANUFACTURER"]},
            )

        # Check for new designer
        designer_name = form.cleaned_data.get('designer_search')
        if designer_name and not form.cleaned_data.get('designer'):
            EditSubmission.objects.create(
                user=self.request.user,
                content_type=ContentType.objects.get_for_model(Company),
                submission_type="CREATE",
                changes={"name": designer_name, "roles": ["DESIGNER"]},
            )

        # Check for new ride model
        ride_model_name = form.cleaned_data.get('ride_model_search')
        manufacturer = form.cleaned_data.get('manufacturer')
        if ride_model_name and not form.cleaned_data.get('ride_model') and manufacturer:
            EditSubmission.objects.create(
                user=self.request.user,
                content_type=ContentType.objects.get_for_model(RideModel),
                submission_type="CREATE",
                changes={
                    "name": ride_model_name,
                    "manufacturer": manufacturer.id
                },
            )

        return super().form_valid(form)


class RideUpdateView(LoginRequiredMixin, ParkContextRequired, EditSubmissionMixin, UpdateView):
    """View for updating an existing ride"""
    model = Ride
    form_class = RideForm
    template_name = 'rides/ride_form.html'
    slug_url_kwarg = 'ride_slug'

    def get_success_url(self):
        """Get URL to redirect to after successful update"""
        return reverse('parks:rides:ride_detail', kwargs={
            'park_slug': self.park.slug,
            'ride_slug': self.object.slug
        })

    def get_queryset(self):
        """Get ride for the specific park"""
        return Ride.objects.filter(park__slug=self.kwargs['park_slug'])

    def get_form_kwargs(self):
        """Pass park to the form"""
        kwargs = super().get_form_kwargs()
        self.park = get_object_or_404(Park, slug=self.kwargs['park_slug'])
        kwargs['park'] = self.park
        return kwargs

    def get_context_data(self, **kwargs):
        """Add park and park_slug to context"""
        context = super().get_context_data(**kwargs)
        context['park'] = self.park
        context['park_slug'] = self.park.slug
        context['is_edit'] = True
        return context

    def form_valid(self, form):
        """Handle form submission including new items"""
        # Check for new manufacturer
        manufacturer_name = form.cleaned_data.get('manufacturer_search')
        if manufacturer_name and not form.cleaned_data.get('manufacturer'):
            EditSubmission.objects.create(
                user=self.request.user,
                content_type=ContentType.objects.get_for_model(Company),
                submission_type="CREATE",
                changes={"name": manufacturer_name, "roles": ["MANUFACTURER"]}
            )

        # Check for new designer
        designer_name = form.cleaned_data.get('designer_search')
        if designer_name and not form.cleaned_data.get('designer'):
            EditSubmission.objects.create(
                user=self.request.user,
                content_type=ContentType.objects.get_for_model(Company),
                submission_type="CREATE",
                changes={"name": designer_name, "roles": ["DESIGNER"]}
            )

        # Check for new ride model
        ride_model_name = form.cleaned_data.get('ride_model_search')
        manufacturer = form.cleaned_data.get('manufacturer')
        if ride_model_name and not form.cleaned_data.get('ride_model') and manufacturer:
            EditSubmission.objects.create(
                user=self.request.user,
                content_type=ContentType.objects.get_for_model(RideModel),
                submission_type="CREATE",
                changes={
                    "name": ride_model_name,
                    "manufacturer": manufacturer.id
                }
            )

        return super().form_valid(form)


class RideListView(ListView):
    """View for displaying a list of rides"""
    model = Ride
    template_name = 'rides/ride_list.html'
    context_object_name = 'rides'

    def get_queryset(self):
        """Get filtered rides based on search and filters"""
        queryset = Ride.objects.all().select_related(
            'park',
            'ride_model',
            'ride_model__manufacturer'
        ).prefetch_related('photos')

        # Park filter
        if 'park_slug' in self.kwargs:
            self.park = get_object_or_404(Park, slug=self.kwargs['park_slug'])
            queryset = queryset.filter(park=self.park)

        # Search term handling
        search = self.request.GET.get('q', '').strip()
        if search:
            # Split search terms for more flexible matching
            search_terms = search.split()
            search_query = Q()
            
            for term in search_terms:
                term_query = Q(
                    name__icontains=term
                ) | Q(
                    park__name__icontains=term
                ) | Q(
                    description__icontains=term
                )
                search_query &= term_query
            
            queryset = queryset.filter(search_query)

        # Category filter
        category = self.request.GET.get('category')
        if category and category != 'all':
            queryset = queryset.filter(category=category)

        # Operating status filter
        if self.request.GET.get('operating') == 'true':
            queryset = queryset.filter(status='operating')

        return queryset

    def get_template_names(self):
        """Return appropriate template based on request type"""
        if self.request.htmx:
            return ["rides/partials/ride_list_results.html"]
        return [self.template_name]

    def get_context_data(self, **kwargs):
        """Add park and category choices to context"""
        context = super().get_context_data(**kwargs)
        if hasattr(self, 'park'):
            context['park'] = self.park
            context['park_slug'] = self.kwargs['park_slug']
        context['category_choices'] = CATEGORY_CHOICES
        return context


class SingleCategoryListView(ListView):
    """View for displaying rides of a specific category"""
    model = Ride
    template_name = 'rides/park_category_list.html'
    context_object_name = 'rides'

    def get_queryset(self):
        """Get rides filtered by category and optionally by park"""
        category = self.kwargs.get('category')
        queryset = Ride.objects.filter(
            category=category
        ).select_related(
            'park',
            'ride_model',
            'ride_model__manufacturer'
        )

        if 'park_slug' in self.kwargs:
            self.park = get_object_or_404(Park, slug=self.kwargs['park_slug'])
            queryset = queryset.filter(park=self.park)

        return queryset

    def get_context_data(self, **kwargs):
        """Add park and category information to context"""
        context = super().get_context_data(**kwargs)
        if hasattr(self, 'park'):
            context['park'] = self.park
            context['park_slug'] = self.kwargs['park_slug']
        context['category'] = dict(CATEGORY_CHOICES).get(
            self.kwargs['category'])
        return context


# Alias for parks app to maintain backward compatibility
ParkSingleCategoryListView = SingleCategoryListView




def search_companies(request: HttpRequest) -> HttpResponse:
    """Search companies and return results for HTMX"""
    query = request.GET.get("q", "").strip()
    role = request.GET.get("role", "").upper()

    companies = Company.objects.all().order_by("name")
    if role:
        companies = companies.filter(roles__contains=[role])
    if query:
        companies = companies.filter(name__icontains=query)
    companies = companies[:10]

    return render(
        request,
        "rides/partials/company_search_results.html",
        {"companies": companies, "search_term": query},
    )

def search_ride_models(request: HttpRequest) -> HttpResponse:
    """Search ride models and return results for HTMX"""
    query = request.GET.get("q", "").strip()
    manufacturer_id = request.GET.get("manufacturer")

    # Show all ride models on click, filter on input
    ride_models = RideModel.objects.select_related(
        "manufacturer").order_by("name")
    if query:
        ride_models = ride_models.filter(name__icontains=query)
    if manufacturer_id:
        ride_models = ride_models.filter(manufacturer_id=manufacturer_id)
    ride_models = ride_models[:10]

    return render(
        request,
        "rides/partials/ride_model_search_results.html",
        {"ride_models": ride_models, "search_term": query,
            "manufacturer_id": manufacturer_id},
    )


def get_search_suggestions(request: HttpRequest) -> HttpResponse:
    """Get smart search suggestions for rides
    
    Returns suggestions including:
    - Common matching ride names
    - Matching parks
    - Matching categories
    """
    query = request.GET.get('q', '').strip().lower()
    suggestions = []
    
    if query:
        # Get common ride names
        matching_names = Ride.objects.filter(
            name__icontains=query
        ).values('name').annotate(
            count=Count('id')
        ).order_by('-count')[:3]
        
        for match in matching_names:
            suggestions.append({
                'type': 'ride',
                'text': match['name'],
                'count': match['count']
            })
        
        # Get matching parks
        matching_parks = Park.objects.filter(
            Q(name__icontains=query) |
            Q(location__city__icontains=query)
        )[:3]
        
        for park in matching_parks:
            suggestions.append({
                'type': 'park',
                'text': park.name,
                'location': park.location.city if park.location else None
            })
        
        # Add category matches
        for code, name in CATEGORY_CHOICES:
            if query in name.lower():
                ride_count = Ride.objects.filter(category=code).count()
                suggestions.append({
                    'type': 'category',
                    'code': code,
                    'text': name,
                    'count': ride_count
                })
    
    return render(
        request,
        'rides/partials/search_suggestions.html',
        {
            'suggestions': suggestions,
            'query': query
        }
    )


class RideSearchView(ListView):
    """View for ride search functionality with HTMX support."""
    model = Ride
    template_name = 'search/partials/ride_search_results.html'
    context_object_name = 'rides'
    paginate_by = 20
    
    def get_queryset(self):
        """Get filtered rides based on search form."""
        queryset = Ride.objects.select_related('park').order_by('name')
        
        # Process search form
        form = RideSearchForm(self.request.GET)
        if form.is_valid():
            ride = form.cleaned_data.get("ride")
            if ride:
                # If specific ride selected, return just that ride
                queryset = queryset.filter(id=ride.id)
            else:
                # If no specific ride, filter by search term
                search_term = self.request.GET.get('ride', '').strip()
                if search_term:
                    queryset = queryset.filter(name__icontains=search_term)
        
        return queryset
    
    def get_template_names(self):
        """Return appropriate template based on request type."""
        if self.request.htmx:
            return ['search/partials/ride_search_results.html']
        return ['search/ride_search.html']
    
    def get_context_data(self, **kwargs):
        """Add search form to context."""
        context = super().get_context_data(**kwargs)
        context['search_form'] = RideSearchForm(self.request.GET)
        return context