import React, { useState, useEffect } from 'react';
import { useNavigate } from 'react-router-dom';
import { Header } from '@/components/layout/Header';
import { Button } from '@/components/ui/button';
import { Badge } from '@/components/ui/badge';
import { Dialog, DialogContent } from '@/components/ui/dialog';
import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from '@/components/ui/select';
import { Collapsible, CollapsibleContent, CollapsibleTrigger } from '@/components/ui/collapsible';
import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
import { Tabs, TabsList, TabsTrigger } from '@/components/ui/tabs';
import { Filter, SlidersHorizontal, FerrisWheel, Plus, ChevronDown, PanelLeftClose, PanelLeftOpen, Grid3X3, List } from 'lucide-react';
import { cn } from '@/lib/utils';
import { AutocompleteSearch } from '@/components/search/AutocompleteSearch';
import { RideCard } from '@/components/rides/RideCard';
import { RideListView } from '@/components/rides/RideListView';
import { RideForm } from '@/components/admin/RideForm';
import { RideFilters, RideFilterState, defaultRideFilters } from '@/components/rides/RideFilters';
import { Ride, Park } from '@/types/database';
import { supabase } from '@/integrations/supabase/client';
import { useAuth } from '@/hooks/useAuth';
import { useUserRole } from '@/hooks/useUserRole';
import { toast } from '@/hooks/use-toast';
import { getErrorMessage } from '@/lib/errorHandler';
import { useAuthModal } from '@/hooks/useAuthModal';
import { useDocumentTitle } from '@/hooks/useDocumentTitle';
import { useOpenGraph } from '@/hooks/useOpenGraph';
import { useRides } from '@/hooks/rides/useRides';
import { Pagination } from '@/components/common/Pagination';

export default function Rides() {
  useDocumentTitle('Rides & Attractions');
  const navigate = useNavigate();
  const { user } = useAuth();
  const { isModerator } = useUserRole();
  const { requireAuth } = useAuthModal();
  const [searchQuery, setSearchQuery] = useState('');
  const [sortBy, setSortBy] = useState('name');
  const [filters, setFilters] = useState<RideFilterState>(defaultRideFilters);
  const [showFilters, setShowFilters] = useState(false);
  const [viewMode, setViewMode] = useState<'grid' | 'list'>('grid');
  const [isCreateModalOpen, setIsCreateModalOpen] = useState(false);
  const [currentPage, setCurrentPage] = useState(1);
  const [sidebarCollapsed, setSidebarCollapsed] = useState(() => {
    const saved = localStorage.getItem('rides-sidebar-collapsed');
    return saved ? JSON.parse(saved) : false;
  });

  // Use TanStack Query hook for data fetching with caching
  const { data: rides = [], isLoading: loading, error } = useRides();

  useEffect(() => {
    localStorage.setItem('rides-sidebar-collapsed', JSON.stringify(sidebarCollapsed));
  }, [sidebarCollapsed]);

  // Show error toast if query fails
  useEffect(() => {
    if (error) {
      toast({
        title: "Error loading rides",
        description: error instanceof Error ? error.message : 'Failed to load rides',
        variant: "destructive"
      });
    }
  }, [error]);

  const handleCreateSubmit = async (data: any) => {
    try {
      const { submitRideCreation } = await import('@/lib/entitySubmissionHelpers');
      await submitRideCreation(data, user!.id);

      toast({
        title: "Ride Submitted",
        description: "Your ride submission has been sent for moderation review.",
      });

      setIsCreateModalOpen(false);
    } catch (error) {
      const errorMsg = getErrorMessage(error);
      toast({
        title: "Submission Failed",
        description: errorMsg || "Failed to submit ride.",
        variant: "destructive"
      });
    }
  };

  const filteredAndSortedRides = React.useMemo(() => {
    let filtered = rides.filter(ride => {
      // Search filter
      if (searchQuery) {
        const searchTerm = searchQuery.toLowerCase();
        const matchesSearch = 
          ride.name.toLowerCase().includes(searchTerm) ||
          ride.park?.name?.toLowerCase().includes(searchTerm) ||
          ride.manufacturer?.name?.toLowerCase().includes(searchTerm) ||
          ride.designer?.name?.toLowerCase().includes(searchTerm);
        if (!matchesSearch) return false;
      }

      // Category filter
      if (filters.categories.length > 0 && !filters.categories.includes(ride.category)) {
        return false;
      }

      // Status filter
      if (filters.status !== 'all' && ride.status !== filters.status) {
        return false;
      }

      // Country filter
      if (filters.countries.length > 0) {
        if (!ride.park?.location?.country || !filters.countries.includes(ride.park.location.country)) {
          return false;
        }
      }

      // States filter
      if (filters.statesProvinces.length > 0) {
        if (!ride.park?.location?.state_province || !filters.statesProvinces.includes(ride.park.location.state_province)) {
          return false;
        }
      }

      // Cities filter
      if (filters.cities.length > 0) {
        if (!ride.park?.location?.city || !filters.cities.includes(ride.park.location.city)) {
          return false;
        }
      }

      // Parks filter
      if (filters.parks.length > 0) {
        // Use park_id from the ride object, not the nested park
        if (!ride.park_id || !filters.parks.includes(ride.park_id)) {
          return false;
        }
      }

      // Manufacturer filter
      if (filters.manufacturers.length > 0) {
        if (!ride.manufacturer?.id || !filters.manufacturers.includes(ride.manufacturer.id)) {
          return false;
        }
      }

      // Designer filter
      if (filters.designers.length > 0) {
        if (!ride.designer?.id || !filters.designers.includes(ride.designer.id)) {
          return false;
        }
      }

      // Coaster type filter
      if (filters.coasterTypes.length > 0) {
        // Assuming coaster_type is a field on the ride
        if (!ride.coaster_type || !filters.coasterTypes.includes(ride.coaster_type)) {
          return false;
        }
      }

      // Seating type filter
      if (filters.seatingTypes.length > 0) {
        if (!ride.seating_type || !filters.seatingTypes.includes(ride.seating_type)) {
          return false;
        }
      }

      // Intensity level filter
      if (filters.intensityLevels.length > 0) {
        if (!ride.intensity_level || !filters.intensityLevels.includes(ride.intensity_level)) {
          return false;
        }
      }

      // Track material filter (array field)
      if (filters.trackMaterials.length > 0) {
        if (!ride.track_material || ride.track_material.length === 0 || 
            !ride.track_material.some(material => filters.trackMaterials.includes(material))) {
          return false;
        }
      }

      // Support material filter (array field)
      if (filters.supportMaterials.length > 0) {
        if (!ride.support_material || ride.support_material.length === 0 ||
            !ride.support_material.some(material => filters.supportMaterials.includes(material))) {
          return false;
        }
      }

      // Propulsion method filter (array field)
      if (filters.propulsionMethods.length > 0) {
        if (!ride.propulsion_method || ride.propulsion_method.length === 0 ||
            !ride.propulsion_method.some(method => filters.propulsionMethods.includes(method))) {
          return false;
        }
      }

      // Speed filter
      if (filters.minSpeed > 0 || filters.maxSpeed < 200) {
        const speed = ride.max_speed_kmh || 0;
        if (speed < filters.minSpeed || speed > filters.maxSpeed) {
          return false;
        }
      }

      // Height filter
      if (filters.minHeight > 0 || filters.maxHeight < 150) {
        const height = ride.max_height_meters || 0;
        if (height < filters.minHeight || height > filters.maxHeight) {
          return false;
        }
      }

      // Length filter
      if (filters.minLength > 0 || filters.maxLength < 3000) {
        const length = ride.length_meters || 0;
        if (length < filters.minLength || length > filters.maxLength) {
          return false;
        }
      }

      // Inversions filter
      if (filters.minInversions > 0 || filters.maxInversions < 14) {
        const inversions = ride.inversions || 0;
        if (inversions < filters.minInversions || inversions > filters.maxInversions) {
          return false;
        }
      }

      // Has inversions checkbox
      if (filters.hasInversions && (!ride.inversions || ride.inversions === 0)) {
        return false;
      }

      // Opening date filter
      if (filters.openingDateFrom || filters.openingDateTo) {
        if (!ride.opening_date) {
          return false;
        }
        const openingDate = new Date(ride.opening_date);
        if (filters.openingDateFrom && openingDate < filters.openingDateFrom) {
          return false;
        }
        if (filters.openingDateTo && openingDate > filters.openingDateTo) {
          return false;
        }
      }

      // Operating only filter
      if (filters.operatingOnly && ride.status !== 'operating') {
        return false;
      }

      return true;
    });

    // Apply sorting
    filtered.sort((a, b) => {
      switch (sortBy) {
        case 'name':
          return a.name.localeCompare(b.name);
        case 'rating':
          return (b.average_rating || 0) - (a.average_rating || 0);
        case 'speed':
          return (b.max_speed_kmh || 0) - (a.max_speed_kmh || 0);
        case 'height':
          return (b.max_height_meters || 0) - (a.max_height_meters || 0);
        case 'reviews':
          return (b.review_count || 0) - (a.review_count || 0);
        default:
          return 0;
      }
    });

    return filtered;
  }, [rides, searchQuery, sortBy, filters]);

  // Pagination for display
  const ITEMS_PER_PAGE = 24;
  const paginatedRides = React.useMemo(() => {
    const start = (currentPage - 1) * ITEMS_PER_PAGE;
    const end = start + ITEMS_PER_PAGE;
    return filteredAndSortedRides.slice(start, end);
  }, [filteredAndSortedRides, currentPage]);

  const totalPages = Math.ceil(filteredAndSortedRides.length / ITEMS_PER_PAGE);

  // Reset to page 1 when filters change
  useEffect(() => {
    setCurrentPage(1);
  }, [filters, sortBy, searchQuery]);

  const generateDescription = () => {
    if (!filteredAndSortedRides.length) return 'Discover thrilling rides and roller coasters worldwide';
    
    const activeFilters: string[] = [];
    if (filters.categories.length > 0) activeFilters.push(...filters.categories);
    if (filters.status !== 'all') activeFilters.push(filters.status);
    
    if (activeFilters.length > 0) {
      return `Explore ${filteredAndSortedRides.length} ${activeFilters.join(' ')} rides and attractions`;
    }
    
    return `Explore ${filteredAndSortedRides.length} rides and roller coasters worldwide`;
  };

  useOpenGraph({
    title: 'Rides & Attractions - ThrillWiki',
    description: generateDescription(),
    imageUrl: filteredAndSortedRides[0]?.banner_image_url ?? undefined,
    imageId: filteredAndSortedRides[0]?.banner_image_id ?? undefined,
    type: 'website',
    enabled: !loading
  });

  const categories = [
    { value: 'all', label: 'All Categories' },
    { value: 'roller_coaster', label: 'Roller Coasters' },
    { value: 'flat_ride', label: 'Flat Rides' },
    { value: 'water_ride', label: 'Water Rides' },
    { value: 'dark_ride', label: 'Dark Rides' },
    { value: 'kiddie_ride', label: 'Kiddie Rides' },
    { value: 'transportation', label: 'Transportation' }
  ];

  const statusOptions = [
    { value: 'all', label: 'All Status' },
    { value: 'operating', label: 'Operating' },
    { value: 'seasonal', label: 'Seasonal' },
    { value: 'under_construction', label: 'Under Construction' },
    { value: 'closed', label: 'Closed' }
  ];

  if (loading) {
    return (
      <div className="min-h-screen bg-background">
        <Header />
        <div className="container mx-auto px-4 py-8">
          <div className="animate-pulse space-y-6">
            <div className="h-12 bg-muted rounded w-1/3"></div>
            <div className="grid md:grid-cols-2 lg:grid-cols-3 xl:grid-cols-4 gap-6">
              {[...Array(8)].map((_, i) => (
                <div key={i} className="h-64 bg-muted rounded-lg"></div>
              ))}
            </div>
          </div>
        </div>
      </div>
    );
  }

  return (
    <div className="min-h-screen bg-background">
      <Header />
      
      <main className="container mx-auto px-4 md:px-6 lg:px-8 xl:px-8 2xl:px-10 py-6 xl:py-8">
        {/* Page Header */}
        <div className="mb-8">
          <div className="flex items-center gap-3 mb-4">
            <FerrisWheel className="w-8 h-8 text-primary" />
            <h1 className="text-4xl font-bold">Rides & Attractions</h1>
          </div>
          <p className="text-lg text-muted-foreground mb-4">
            Explore amazing rides and attractions from theme parks worldwide
          </p>
          
          <div className="flex items-center justify-between">
            <div className="flex flex-wrap items-center gap-1.5 sm:gap-2">
              <Badge variant="secondary" className="flex items-center justify-center text-sm sm:text-base px-2 py-0.5 sm:px-3 sm:py-1 whitespace-nowrap">
                {filteredAndSortedRides.length} rides
              </Badge>
              <Badge variant="outline" className="flex items-center justify-center text-xs sm:text-sm px-2 py-0.5 whitespace-nowrap">
                {rides.filter(r => r.category === 'roller_coaster').length} coasters
              </Badge>
            </div>

            <div className="flex items-center gap-2">
              <Button 
                onClick={() => requireAuth(() => setIsCreateModalOpen(true), "Sign in to add a new ride")}
                className="gap-2"
              >
                <Plus className="w-4 h-4" />
                Add Ride
              </Button>
            </div>
          </div>
        </div>

        {/* Search and Filters */}
        <div className="mb-8 space-y-4">
          <div className="flex flex-col md:flex-row gap-4">
            {/* Desktop: Filter toggle on the left */}
            <Button
              variant="outline"
              onClick={() => setSidebarCollapsed(!sidebarCollapsed)}
              className="shrink-0 gap-2 hidden lg:flex"
              title={sidebarCollapsed ? "Show filters" : "Hide filters"}
            >
              {sidebarCollapsed ? (
                <PanelLeftOpen className="w-4 h-4" />
              ) : (
                <PanelLeftClose className="w-4 h-4" />
              )}
              <span>Filters</span>
            </Button>

            {/* Search bar takes remaining space */}
            <div className="flex-1">
              <AutocompleteSearch
                placeholder="Search rides by name, park, or manufacturer..."
                types={['ride']}
                limit={8}
                onSearch={(query) => setSearchQuery(query)}
                showRecentSearches={false}
              />
            </div>

            {/* Sort controls - more compact */}
            <div className="flex gap-2">
              <Select value={sortBy} onValueChange={setSortBy}>
                <SelectTrigger className="w-[160px]">
                  <SlidersHorizontal className="w-4 h-4 mr-2" />
                  <SelectValue />
                </SelectTrigger>
                <SelectContent>
                  <SelectItem value="name">Name</SelectItem>
                  <SelectItem value="rating">Rating</SelectItem>
                  <SelectItem value="speed">Speed</SelectItem>
                  <SelectItem value="height">Height</SelectItem>
                  <SelectItem value="reviews">Reviews</SelectItem>
                </SelectContent>
              </Select>
              
              {/* Mobile filter toggle */}
              <Button
                variant={showFilters ? "default" : "outline"}
                onClick={() => setShowFilters(!showFilters)}
                className="gap-2 lg:hidden"
              >
                <Filter className="w-4 h-4" />
                <span className="hidden sm:inline">Filters</span>
                <ChevronDown className={`w-4 h-4 transition-transform ${showFilters ? 'rotate-180' : ''}`} />
              </Button>

              <Tabs value={viewMode} onValueChange={(v) => setViewMode(v as 'grid' | 'list')} className="hidden md:inline-flex">
                <TabsList>
                  <TabsTrigger value="grid"><Grid3X3 className="w-4 h-4" /></TabsTrigger>
                  <TabsTrigger value="list"><List className="w-4 h-4" /></TabsTrigger>
                </TabsList>
              </Tabs>
            </div>
          </div>

          {/* Mobile Filters */}
          <div className="lg:hidden">
            <Collapsible open={showFilters} onOpenChange={setShowFilters}>
              <CollapsibleContent>
                <Card>
                  <CardContent className="pt-6">
                    <RideFilters filters={filters} onFiltersChange={setFilters} rides={rides as any} />
                  </CardContent>
                </Card>
              </CollapsibleContent>
            </Collapsible>
          </div>
        </div>

        {/* Main Content Area with Sidebar */}
        <div className="flex flex-col lg:flex-row gap-6">
          {/* Desktop Filter Sidebar */}
          {!sidebarCollapsed && (
            <aside className="hidden lg:block flex-shrink-0 transition-all duration-300 lg:w-[340px] xl:w-[380px] 2xl:w-[420px]">
              <div className="sticky top-24">
                <Card>
                  <CardHeader className="flex flex-row items-center justify-between pb-2">
                    <CardTitle className="text-base">Filters</CardTitle>
                    <Button
                      variant="ghost"
                      size="sm"
                      onClick={() => setSidebarCollapsed(true)}
                      title="Hide filters"
                    >
                      <PanelLeftClose className="w-4 h-4" />
                    </Button>
                  </CardHeader>
                  <CardContent>
                    <RideFilters filters={filters} onFiltersChange={setFilters} rides={rides as any} />
                  </CardContent>
                </Card>
              </div>
            </aside>
          )}

          {/* Results Area */}
          <div className="flex-1 min-w-0">
            {filteredAndSortedRides.length > 0 ? (
              <div>
                {viewMode === 'grid' ? (
                  <div className="grid grid-cols-1 sm:grid-cols-2 md:grid-cols-3 lg:grid-cols-4 xl:grid-cols-5 2xl:grid-cols-6 3xl:grid-cols-7 gap-4 lg:gap-5 xl:gap-4 2xl:gap-5">
                    {paginatedRides.map((ride) => (
                      <RideCard key={ride.id} ride={ride as any} showParkName={true} />
                    ))}
                  </div>
                ) : (
                  <RideListView rides={paginatedRides as any} onRideClick={(ride) => navigate(`/parks/${ride.park?.slug}/rides/${ride.slug}`)} />
                )}
                
                <Pagination
                  currentPage={currentPage}
                  totalPages={totalPages}
                  onPageChange={setCurrentPage}
                  isLoading={loading}
                />
              </div>
            ) : (
              <div className="text-center py-12">
                <FerrisWheel className="w-16 h-16 mb-4 mx-auto text-muted-foreground" />
                <h3 className="text-xl font-semibold mb-2">No rides found</h3>
                <p className="text-muted-foreground">
                  Try adjusting your search criteria or filters
                </p>
              </div>
            )}
          </div>
        </div>

        {/* Create Modal */}
        <Dialog open={isCreateModalOpen} onOpenChange={setIsCreateModalOpen}>
          <DialogContent className="max-w-4xl max-h-[90vh] overflow-y-auto">
            <RideForm
              onSubmit={handleCreateSubmit}
              onCancel={() => setIsCreateModalOpen(false)}
              isEditing={false}
            />
          </DialogContent>
        </Dialog>
      </main>
    </div>
  );
}