import { useState, useEffect, useRef } from 'react';
import { useRouter } from 'next/router';
import Link from 'next/link';
import Layout from '../components/Layout';
import CardItem from '../components/CardItem';
import BulkSelectionToolbar from '../components/BulkSelectionToolbar';
import CollectionSelectionModal from '../components/CollectionSelectionModal';
import ProtectedRoute from '../components/ProtectedRoute';
import { ManaCost, ColorFilterSymbol } from '../components/ManaSymbols';
import ManaSymbolSettings from '../components/ManaSymbolSettings';
import { useAuth } from '../lib/use-auth';
import { VOCAB } from '../lib/collection-vocabulary.js';

// Public fallback component for non-authenticated users
function PublicCardsView() {
  return (
    <Layout user={null}>
      <div className="p-6">
        <div className="max-w-7xl mx-auto">
          {/* Header with login prompt */}
          <div className="mb-8 text-center">
            <h1 className="text-4xl font-bold mb-4 gradient-text-flame">Browse Trading Cards</h1>
            <p className="text-xl mb-6" style={{ color: 'var(--text-secondary)' }}>
              Discover thousands of trading cards from popular TCGs
            </p>
            <div className="bg-gradient-to-r from-orange-50 to-red-50 dark:from-orange-900/20 dark:to-red-900/20 rounded-2xl p-6 border border-orange-200 dark:border-orange-800">
              <h3 className="text-lg font-semibold mb-2 gradient-text-ember">Sign Up to Unlock Full Features</h3>
              <p className="mb-4" style={{ color: 'var(--text-secondary)' }}>
                Create lists, add cards to {VOCAB.MY_COLLECTION}, mark favorites, and more!
              </p>
              <div className="flex flex-col sm:flex-row gap-3 justify-center">
                <Link 
                  href="/signup"
                  className="px-6 py-3 font-medium rounded-xl transition-all duration-200 hover:opacity-90"
                  style={{ 
                    backgroundColor: 'var(--accent-ember)', 
                    color: 'white'
                  }}
                >
                  Create Free Account
                </Link>
                <Link 
                  href="/login"
                  className="px-6 py-3 font-medium rounded-xl border-2 transition-all duration-200 hover:opacity-80"
                  style={{ 
                    color: 'var(--text-primary)',
                    borderColor: 'var(--accent-ember)'
                  }}
                >
                  Sign In
                </Link>
              </div>
            </div>
          </div>
          
          {/* Basic card browser would go here - simplified version */}
          <div className="text-center py-20">
            <div className="w-16 h-16 mx-auto mb-4 rounded-2xl flex items-center justify-center" style={{ backgroundColor: 'var(--accent-ember)' }}>
              <svg className="w-8 h-8 text-white" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M19 11H5m14 0a2 2 0 012 2v6a2 2 0 01-2 2H5a2 2 0 01-2-2v-6a2 2 0 012-2m14 0V9a2 2 0 00-2-2M5 9a2 2 0 012-2m0 0V5a2 2 0 012-2h6a2 2 0 012 2v2M7 7h10" />
              </svg>
            </div>
            <h3 className="text-xl font-semibold mb-2 gradient-text-flame">Full Card Browser Coming Soon</h3>
            <p style={{ color: 'var(--text-secondary)' }}>
              Sign up now to get early access to our complete card database and list tools.
            </p>
          </div>
        </div>
      </div>
    </Layout>
  );
}

function AuthenticatedCards() {
  const router = useRouter();
  const { user, loading: authLoading } = useAuth();

  const [cards, setCards] = useState([]);
  const [loading, setLoading] = useState(true);
  const [loadingMore, setLoadingMore] = useState(false);
  const [searchQuery, setSearchQuery] = useState('');
  const [selectedTCG, setSelectedTCG] = useState('all');
  const [selectedRarity, setSelectedRarity] = useState('all');
  const [selectedSet, setSelectedSet] = useState('all');
  const [selectedValueRange, setSelectedValueRange] = useState('all');
  const [viewMode, setViewMode] = useState('grid'); // grid or list
  const [pagination, setPagination] = useState({
    page: 1,
    limit: 50,
    total: 0,
    pages: 0
  });
  const [filters, setFilters] = useState({
    games: [],
    rarities: [],
    sets: []
  });
  const [hasMore, setHasMore] = useState(true);
  const loadingMoreRef = useRef(false);
  const hasMoreRef = useRef(true);
  
  // Bulk selection state
  const [selectedCards, setSelectedCards] = useState([]);
  const [favoritedCards, setFavoritedCards] = useState(new Set());
  
  // Modal states
  const [showCollectionModal, setShowCollectionModal] = useState(false);
  const [cardsToAdd, setCardsToAdd] = useState([]);

  // Mana symbol settings
  const [manaSymbolSettings, setManaSymbolSettings] = useState({ useSVG: false });

  // Fetch cards from database
  const fetchCards = async (isLoadMore = false) => {
    try {
      if (isLoadMore) {
        setLoadingMore(true);
        loadingMoreRef.current = true;
      } else {
        setLoading(true);
      }
      
      const params = new URLSearchParams({
        query: searchQuery,
        game: selectedTCG,
        rarity: selectedRarity,
        set: selectedSet,
        minPrice: selectedValueRange === 'under-50' ? '0' : 
                 selectedValueRange === '50-100' ? '50' : 
                 selectedValueRange === '100-500' ? '100' : 
                 selectedValueRange === '500-1000' ? '500' : 
                 selectedValueRange === 'over-1000' ? '1000' : '',
        maxPrice: selectedValueRange === '50-100' ? '100' : 
                 selectedValueRange === '100-500' ? '500' : 
                 selectedValueRange === '500-1000' ? '1000' : '',
        page: pagination.page.toString(),
        limit: pagination.limit.toString()
      });

      const response = await fetch(`/api/cards/search?${params}`);
      const data = await response.json();

      if (data.success) {
        
        
        if (isLoadMore) {
          setCards(prevCards => [...prevCards, ...data.cards]);
        } else {
          setCards(data.cards);
        }
        setPagination(data.pagination);
        setFilters(data.filters);
        const hasMoreCards = data.pagination.page < data.pagination.pages;
        setHasMore(hasMoreCards);
        hasMoreRef.current = hasMoreCards;
      } else {
        console.error('Failed to fetch cards:', data.error);
        if (!isLoadMore) {
          setCards([]);
        }
      }
    } catch (error) {
      console.error('Error fetching cards:', error);
      if (!isLoadMore) {
        setCards([]);
      }
    } finally {
      setLoading(false);
      setLoadingMore(false);
      loadingMoreRef.current = false;
    }
  };

  // Load user's favorited cards
  const loadFavoritedCards = async () => {
    try {
      const token = localStorage.getItem('auth_token');
      if (!token) return;

      const response = await fetch('/api/favorites?type=card', {
        headers: {
          'Authorization': `Bearer ${token}`
        }
      });

      if (response.ok) {
        const data = await response.json();
        const favoriteIds = new Set(data.favorites.map(fav => parseInt(fav.item_id)));
        setFavoritedCards(favoriteIds);
      }
    } catch (error) {
      console.error('Error loading favorited cards:', error);
    }
  };

  // Initial load
  useEffect(() => {
    /* eslint-disable react-hooks/set-state-in-effect -- reset list state when filters change, then fetch */
    setPagination(prev => ({ ...prev, page: 1 }));
    setCards([]);
    setHasMore(true);
    hasMoreRef.current = true;
    fetchCards(false);
    loadFavoritedCards(); // Load user's favorites
    /* eslint-enable react-hooks/set-state-in-effect */
    // eslint-disable-next-line react-hooks/exhaustive-deps -- filter-driven reload; fetchCards closes over latest search state
  }, [selectedTCG, selectedRarity, selectedSet, selectedValueRange]);

  // Handle search with debounce
  const [searchTimeout, setSearchTimeout] = useState(null);
  
  const handleSearchChange = (value) => {
    setSearchQuery(value);
    
    // Clear existing timeout
    if (searchTimeout) {
      clearTimeout(searchTimeout);
    }
    
    // Set new timeout for search
    const newTimeout = setTimeout(() => {
      setPagination(prev => ({ ...prev, page: 1 }));
      setCards([]);
      setHasMore(true);
      hasMoreRef.current = true;
      fetchCards(false);
    }, 500); // 500ms delay
    
    setSearchTimeout(newTimeout);
  };

  // Cleanup timeout on unmount
  useEffect(() => {
    return () => {
      if (searchTimeout) {
        clearTimeout(searchTimeout);
      }
    };
  }, [searchTimeout]);

  // Load more cards
  const loadMoreCards = async () => {

    
    if (!loadingMoreRef.current && hasMoreRef.current) {
      const nextPage = pagination.page + 1;

      setPagination(prev => ({ ...prev, page: nextPage }));
      
      // Use the next page number directly in the fetch
      try {
        setLoadingMore(true);
        loadingMoreRef.current = true;
        
        const params = new URLSearchParams({
          query: searchQuery,
          game: selectedTCG,
          rarity: selectedRarity,
          set: selectedSet,
          minPrice: selectedValueRange === 'under-50' ? '0' : 
                   selectedValueRange === '50-100' ? '50' : 
                   selectedValueRange === '100-500' ? '100' : 
                   selectedValueRange === '500-1000' ? '500' : 
                   selectedValueRange === 'over-1000' ? '1000' : '',
          maxPrice: selectedValueRange === '50-100' ? '100' : 
                   selectedValueRange === '100-500' ? '500' : 
                   selectedValueRange === '500-1000' ? '1000' : '',
          page: nextPage.toString(),
          limit: pagination.limit.toString()
        });

        const response = await fetch(`/api/cards/search?${params}`);
        const data = await response.json();

        if (data.success) {
          
          setCards(prevCards => [...prevCards, ...data.cards]);
          setPagination(data.pagination);
          setFilters(data.filters);
          const hasMoreCards = data.pagination.page < data.pagination.pages;
          setHasMore(hasMoreCards);
          hasMoreRef.current = hasMoreCards;
        } else {
          console.error('Failed to fetch more cards:', data.error);
        }
      } catch (error) {
        console.error('Error fetching more cards:', error);
      } finally {
        setLoadingMore(false);
        loadingMoreRef.current = false;
      }
    }
  };

  // Update refs when state changes
  useEffect(() => {
    hasMoreRef.current = hasMore;
    loadingMoreRef.current = loadingMore;
  }, [hasMore, loadingMore]);

  // Intersection Observer for infinite scroll
  useEffect(() => {
    const observer = new IntersectionObserver(
      (entries) => {
        entries.forEach((entry) => {
          if (entry.isIntersecting && hasMoreRef.current && !loadingMoreRef.current) {
            loadMoreCards();
          }
        });
      },
      {
        rootMargin: '50px',
        threshold: 0.1
      }
    );

    const setupObserver = () => {
      const sentinel = document.getElementById('infinite-scroll-sentinel');
      if (sentinel) {
        observer.observe(sentinel);
      } else {
        setTimeout(setupObserver, 100);
      }
    };

    setupObserver();

    return () => {
      const sentinel = document.getElementById('infinite-scroll-sentinel');
      if (sentinel) {
        observer.unobserve(sentinel);
      }
    };
    // eslint-disable-next-line react-hooks/exhaustive-deps -- observer setup once; loadMoreCards uses refs for latest state
  }, []);

  const getRarityColor = (rarity) => {
    // Map database rarity values to colors
    const rarityColorMap = {
      'common': '#6B7280',
      'uncommon': '#10B981',
      'rare': '#F59E0B',
      'mythic': '#FFD700',
      'holographic': '#FF6B6B',
      'enchanted': '#A855F7',
      'secret rare': '#FF6B6B',
      'ultra rare': '#A855F7'
    };
    return rarityColorMap[rarity?.toLowerCase()] || '#6B7280';
  };

  const tcgOptions = [
    { value: 'MTG', label: 'Magic: The Gathering', color: 'purple', icon: '🔮' },
    { value: 'Pokemon', label: 'Pokemon', color: 'blue', icon: '⚡' },
    { value: 'Lorcana', label: 'Disney Lorcana', color: 'pink', icon: '✨' }
  ];

  const rarityOptions = [
    { value: 'all', label: 'All Rarities' },
    { value: 'common', label: 'Common' },
    { value: 'uncommon', label: 'Uncommon' },
    { value: 'rare', label: 'Rare' },
    { value: 'mythic', label: 'Mythic' },
    { value: 'enchanted', label: 'Enchanted' },
    ...filters.rarities.filter(rarity => 
      !['all', 'common', 'uncommon', 'rare', 'mythic', 'enchanted'].includes(rarity)
    ).map(rarity => ({
      value: rarity,
      label: rarity,
      color: getRarityColor(rarity)
    }))
  ];

  const setOptions = [
    { value: 'all', label: 'All Sets' },
    ...filters.sets.map(set => ({
      value: set,
      label: set
    }))
  ];

  const valueRangeOptions = [
    { value: 'all', label: 'All Values' },
    { value: 'under-50', label: 'Under $50' },
    { value: '50-100', label: '$50 - $100' },
    { value: '100-500', label: '$100 - $500' },
    { value: '500-1000', label: '$500 - $1,000' },
    { value: 'over-1000', label: 'Over $1,000' }
  ];



  const formatCurrency = (amount) => {
    return new Intl.NumberFormat('en-US', {
      style: 'currency',
      currency: 'USD'
    }).format(amount);
  };

  const getRarityLabel = (rarity) => {
    const rarityOption = rarityOptions.find(option => option.value === rarity);
    return rarityOption ? rarityOption.label : rarity;
  };

  // Bulk selection handlers
  const handleToggleSelect = (card) => {
    setSelectedCards(prev => {
      const isSelected = prev.some(c => c.id === card.id);
      if (isSelected) {
        return prev.filter(c => c.id !== card.id);
      } else {
        return [...prev, card];
      }
    });
  };

  const handleClearSelection = () => {
    setSelectedCards([]);
  };

  const handleToggleFavorite = async (card) => {
    try {
      const isFavorited = favoritedCards.has(card.id);
      const method = isFavorited ? 'DELETE' : 'POST';
      
      const response = await fetch('/api/favorites', {
        method,
        headers: {
          'Content-Type': 'application/json',
          'Authorization': `Bearer ${localStorage.getItem('auth_token')}`
        },
        body: JSON.stringify({
          itemType: 'card',
          itemId: card.id
        })
      });

      if (response.ok) {
        setFavoritedCards(prev => {
          const newSet = new Set(prev);
          if (isFavorited) {
            newSet.delete(card.id);
          } else {
            newSet.add(card.id);
          }
          return newSet;
        });
      }
    } catch (error) {
      console.error('Error toggling favorite:', error);
    }
  };

  // Bulk action handlers
  const handleBulkAddToCollection = (cards) => {
    setCardsToAdd(cards);
    setShowCollectionModal(true);
  };

  const handleBulkAddToDeck = (cards) => {
    console.log('Adding to deck:', cards);
    alert(`Adding ${cards.length} cards to deck (functionality coming soon)`);
  };

  const handleBulkMarkAsOwned = async (cards) => {
    try {
      const token = localStorage.getItem('auth_token');
      if (!token) {
        alert(`Please log in to ${VOCAB.ADD_TO_MY_COLLECTION.toLowerCase()}`);
        return;
      }

      let successCount = 0;
      for (const card of cards) {
        try {
          const response = await fetch(`/api/cards/${card.id}/ownership`, {
            method: 'POST',
            headers: {
              'Content-Type': 'application/json',
              'Authorization': `Bearer ${token}`
            },
            body: JSON.stringify({ quantity: 1 })
          });

          if (response.ok) {
            successCount++;
          }
        } catch (error) {
          console.error(`Error marking card ${card.id} as owned:`, error);
        }
      }

      if (successCount === cards.length) {
        alert(`Successfully added ${cards.length} cards to ${VOCAB.MY_COLLECTION}!`);
      } else {
        alert(`Added ${successCount} out of ${cards.length} cards to ${VOCAB.MY_COLLECTION}. Some operations may have failed.`);
      }

      // Clear selection after successful operation
      setSelectedCards([]);
    } catch (error) {
      console.error('Error in bulk mark as owned:', error);
      alert(`Failed to add cards to ${VOCAB.MY_COLLECTION}. Please try again.`);
    }
  };

  const handleBulkRemoveFromOwned = async (cards) => {
    try {
      const token = localStorage.getItem('auth_token');
      if (!token) {
        alert(`Please log in to ${VOCAB.REMOVE_FROM_MY_COLLECTION.toLowerCase()}`);
        return;
      }

      let successCount = 0;
      for (const card of cards) {
        try {
          const response = await fetch(`/api/cards/${card.id}/ownership`, {
            method: 'POST',
            headers: {
              'Content-Type': 'application/json',
              'Authorization': `Bearer ${token}`
            },
            body: JSON.stringify({ quantity: 0 })
          });

          if (response.ok) {
            successCount++;
          }
        } catch (error) {
          console.error(`Error removing card ${card.id} from owned:`, error);
        }
      }

      if (successCount === cards.length) {
        alert(`Successfully removed ${cards.length} cards from ${VOCAB.MY_COLLECTION}!`);
      } else {
        alert(`Removed ${successCount} out of ${cards.length} cards from ${VOCAB.MY_COLLECTION}. Some operations may have failed.`);
      }

      // Clear selection after successful operation
      setSelectedCards([]);
    } catch (error) {
      console.error('Error in bulk remove from owned:', error);
      alert(`Failed to remove cards from ${VOCAB.MY_COLLECTION}. Please try again.`);
    }
  };

  const handleBulkFavorite = async (cards) => {
    try {
      for (const card of cards) {
        if (!favoritedCards.has(card.id)) {
          await fetch('/api/favorites', {
            method: 'POST',
            headers: {
              'Content-Type': 'application/json',
              'Authorization': `Bearer ${localStorage.getItem('auth_token')}`
            },
            body: JSON.stringify({
              itemType: 'card',
              itemId: card.id
            })
          });
        }
      }
      
      setFavoritedCards(prev => {
        const newSet = new Set(prev);
        cards.forEach(card => newSet.add(card.id));
        return newSet;
      });
      
      alert(`Added ${cards.length} cards to favorites`);
    } catch (error) {
      console.error('Error bulk favoriting:', error);
    }
  };

  const handleBulkDelete = (cards) => {
    console.log('Bulk delete:', cards);
    alert(`Bulk delete functionality coming soon for ${cards.length} cards`);
  };

  // Collection modal handlers
  const handleAddToCollections = (results, selectedCollectionIds, cards) => {
    const successCount = results.filter(r => r.success).length;
    const totalAttempts = results.length;
    
    if (successCount === totalAttempts) {
      alert(`Successfully added ${cards.length} card${cards.length !== 1 ? 's' : ''} to ${selectedCollectionIds.length} list${selectedCollectionIds.length !== 1 ? 's' : ''}!`);
    } else {
      alert(`Added ${successCount} out of ${totalAttempts} cards. Some additions may have failed.`);
    }
    
    // Clear selection after successful addition
    setSelectedCards([]);
  };

  if (loading && cards.length === 0) {
    return (
      <Layout user={user}>
        <div className="flex items-center justify-center min-h-screen">
          <div className="animate-spin rounded-full h-32 w-32 border-b-2" style={{ borderColor: 'var(--text-accent)' }}></div>
        </div>
      </Layout>
    );
  }

  return (
    <Layout user={user}>
      {/* Header */}
      <div className="p-4 sm:p-6" style={{ backgroundColor: 'var(--bg-secondary)', borderBottom: '1px solid var(--border)' }}>
        <div className="flex flex-col sm:flex-row sm:items-center sm:justify-between gap-4">
          <div>
            <h1 className="text-2xl sm:text-3xl font-bold mb-2" style={{ color: 'var(--text-primary)' }}>
              Cards
            </h1>
            <p className="text-base sm:text-lg" style={{ color: 'var(--text-secondary)' }}>
              Browse and manage your card collection
            </p>
          </div>
          <div className="flex space-x-2 sm:space-x-4">
            <button 
              onClick={() => setViewMode('grid')}
              className={`p-2 rounded-xl transition-all duration-200 ${
                viewMode === 'grid' 
                  ? 'shadow-lg' 
                  : 'hover:shadow-md'
              }`}
              style={{
                backgroundColor: viewMode === 'grid' ? 'var(--bg-tertiary)' : 'transparent',
                color: viewMode === 'grid' ? 'var(--text-primary)' : 'var(--text-secondary)'
              }}
            >
              <svg className="h-6 w-6" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M4 6a2 2 0 012-2h2a2 2 0 012 2v2a2 2 0 01-2 2H6a2 2 0 01-2-2V6zM14 6a2 2 0 012-2h2a2 2 0 012 2v2a2 2 0 01-2 2h-2a2 2 0 01-2-2V6zM4 16a2 2 0 012-2h2a2 2 0 012 2v2a2 2 0 01-2 2H6a2 2 0 01-2-2v-2zM14 16a2 2 0 012-2h2a2 2 0 012 2v2a2 2 0 01-2 2h-2a2 2 0 01-2-2v-2z" />
              </svg>
            </button>
            <button 
              onClick={() => setViewMode('list')}
              className={`p-2 rounded-xl transition-all duration-200 ${
                viewMode === 'list' 
                  ? 'shadow-lg' 
                  : 'hover:shadow-md'
              }`}
              style={{
                backgroundColor: viewMode === 'list' ? 'var(--bg-tertiary)' : 'transparent',
                color: viewMode === 'list' ? 'var(--text-primary)' : 'var(--text-secondary)'
              }}
            >
              <svg className="h-6 w-6" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M4 6h16M4 10h16M4 14h16M4 18h16" />
              </svg>
            </button>
          </div>
        </div>
      </div>

      {/* Quick Filters */}
      <div className="p-4 sm:p-6" style={{ backgroundColor: 'var(--bg-secondary)' }}>
        <div className="mb-4">
          <h3 className="text-base sm:text-lg font-semibold mb-3" style={{ color: 'var(--text-primary)' }}>
            Quick Filters
          </h3>
          <div className="flex flex-wrap gap-2 sm:gap-3">
            <button
              onClick={() => setSelectedTCG('all')}
              className={`px-4 py-2 rounded-xl font-medium transition-all duration-200 ${
                selectedTCG === 'all' 
                  ? 'shadow-lg' 
                  : 'hover:shadow-md'
              }`}
              style={{
                backgroundColor: selectedTCG === 'all' ? 'var(--bg-tertiary)' : 'transparent',
                color: selectedTCG === 'all' ? 'var(--text-primary)' : 'var(--text-secondary)',
                border: '1px solid var(--border)'
              }}
            >
              All Games
            </button>
            {tcgOptions.map(option => (
              <button
                key={option.value}
                onClick={() => setSelectedTCG(option.value)}
                className={`px-4 py-2 rounded-xl font-medium transition-all duration-200 flex items-center gap-2 ${
                  selectedTCG === option.value 
                    ? 'shadow-lg' 
                    : 'hover:shadow-md'
                }`}
                style={{
                  backgroundColor: selectedTCG === option.value ? 'var(--bg-tertiary)' : 'transparent',
                  color: selectedTCG === option.value ? 'var(--text-primary)' : 'var(--text-secondary)',
                  border: '1px solid var(--border)'
                }}
              >
                <span>{option.icon}</span>
                {option.label}
              </button>
            ))}
          </div>
        </div>

        {/* Advanced Filters */}
        <div className="grid grid-cols-1 sm:grid-cols-2 lg:grid-cols-4 gap-4">
          <div>
            <label className="block text-sm font-medium mb-2" style={{ color: 'var(--text-primary)' }}>
              Search
            </label>
            <div className="relative">
              <input
                type="text"
                placeholder="Search cards..."
                className="search-bar w-full pr-12"
                value={searchQuery}
                onChange={(e) => handleSearchChange(e.target.value)}
                onKeyPress={(e) => {
                  if (e.key === 'Enter') {
                    setPagination(prev => ({ ...prev, page: 1 }));
                    setCards([]);
                    setHasMore(true);
                    hasMoreRef.current = true;
                    fetchCards(false);
                  }
                }}
              />
              <button
                onClick={() => {
                  setPagination(prev => ({ ...prev, page: 1 }));
                  setCards([]);
                  setHasMore(true);
                  hasMoreRef.current = true;
                  fetchCards(false);
                }}
                className="absolute right-2 top-1/2 transform -translate-y-1/2 p-2 rounded-lg hover:bg-opacity-20 transition-all duration-200"
                style={{ backgroundColor: 'var(--bg-tertiary)' }}
              >
                <svg className="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                  <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M21 21l-6-6m2-5a7 7 0 11-14 0 7 7 0 0114 0z" />
                </svg>
              </button>
            </div>
          </div>
          <div>
            <label className="block text-sm font-medium mb-2" style={{ color: 'var(--text-primary)' }}>
              Rarity
            </label>
            <select
              value={selectedRarity}
              onChange={(e) => setSelectedRarity(e.target.value)}
              className="input-field w-full"
            >
              {rarityOptions.map(option => (
                <option key={option.value} value={option.value}>
                  {option.label}
                </option>
              ))}
            </select>
          </div>
          <div>
            <label className="block text-sm font-medium mb-2" style={{ color: 'var(--text-primary)' }}>
              Set
            </label>
            <select
              value={selectedSet}
              onChange={(e) => setSelectedSet(e.target.value)}
              className="input-field w-full"
            >
              {setOptions.map(option => (
                <option key={option.value} value={option.value}>
                  {option.label}
                </option>
              ))}
            </select>
          </div>
          <div>
            <label className="block text-sm font-medium mb-2" style={{ color: 'var(--text-primary)' }}>
              Value Range
            </label>
            <select
              value={selectedValueRange}
              onChange={(e) => setSelectedValueRange(e.target.value)}
              className="input-field w-full"
            >
              {valueRangeOptions.map(option => (
                <option key={option.value} value={option.value}>
                  {option.label}
                </option>
              ))}
            </select>
          </div>
        </div>

        {/* Active Filters Display */}
        {(selectedTCG !== 'all' || selectedRarity !== 'all' || selectedSet !== 'all' || selectedValueRange !== 'all') && (
          <div className="mt-4">
            <div className="flex flex-wrap gap-2">
              {selectedTCG !== 'all' && (
                <span className="px-3 py-1 rounded-full text-sm font-medium" style={{ 
                  backgroundColor: 'var(--bg-tertiary)', 
                  color: 'var(--text-primary)',
                  border: '1px solid var(--border)'
                }}>
                  {tcgOptions.find(opt => opt.value === selectedTCG)?.label}
                  <button 
                    onClick={() => setSelectedTCG('all')}
                    className="ml-2 hover:opacity-70"
                  >
                    ×
                  </button>
                </span>
              )}
              {selectedRarity !== 'all' && (
                <span className="px-3 py-1 rounded-full text-sm font-medium" style={{ 
                  backgroundColor: 'var(--bg-tertiary)', 
                  color: 'var(--text-primary)',
                  border: '1px solid var(--border)'
                }}>
                  {rarityOptions.find(opt => opt.value === selectedRarity)?.label}
                  <button 
                    onClick={() => setSelectedRarity('all')}
                    className="ml-2 hover:opacity-70"
                  >
                    ×
                  </button>
                </span>
              )}
              {selectedSet !== 'all' && (
                <span className="px-3 py-1 rounded-full text-sm font-medium" style={{ 
                  backgroundColor: 'var(--bg-tertiary)', 
                  color: 'var(--text-primary)',
                  border: '1px solid var(--border)'
                }}>
                  {setOptions.find(opt => opt.value === selectedSet)?.label}
                  <button 
                    onClick={() => setSelectedSet('all')}
                    className="ml-2 hover:opacity-70"
                  >
                    ×
                  </button>
                </span>
              )}
              {selectedValueRange !== 'all' && (
                <span className="px-3 py-1 rounded-full text-sm font-medium" style={{ 
                  backgroundColor: 'var(--bg-tertiary)', 
                  color: 'var(--text-primary)',
                  border: '1px solid var(--border)'
                }}>
                  {valueRangeOptions.find(opt => opt.value === selectedValueRange)?.label}
                  <button 
                    onClick={() => setSelectedValueRange('all')}
                    className="ml-2 hover:opacity-70"
                  >
                    ×
                  </button>
                </span>
              )}
              <button 
                onClick={() => {
                  setSelectedTCG('all');
                  setSelectedRarity('all');
                  setSelectedSet('all');
                  setSelectedValueRange('all');
                }}
                className="px-3 py-1 rounded-full text-sm font-medium hover:opacity-70" style={{ 
                  color: 'var(--text-accent)',
                  border: '1px solid var(--border)'
                }}>
                Clear All
              </button>
            </div>
          </div>
        )}
      </div>

      {/* Cards Display */}
      <div className="p-6 pb-64">
                {cards.length === 0 ? (
          <div className="text-center py-12">
            <div className="text-6xl mb-4">🃏</div>
            <h3 className="text-xl font-semibold mb-2" style={{ color: 'var(--text-primary)' }}>
              No cards found
            </h3>
            <p className="mb-6" style={{ color: 'var(--text-secondary)' }}>
              Try adjusting your search or filters
            </p>
          </div>
        ) : (
          <>
            <div className={viewMode === 'grid' ? 'card-grid-container grid grid-cols-2 sm:grid-cols-3 md:grid-cols-4 lg:grid-cols-4 xl:grid-cols-5 2xl:grid-cols-6 gap-3 sm:gap-4 lg:gap-6 p-3 sm:p-4 lg:p-6 xl:p-8' : 'space-y-4 p-6'}>
              {cards.map((card) => (
                <CardItem
                  key={card.id}
                  card={card}
                  viewMode={viewMode}
                  isSelected={selectedCards.some(c => c.id === card.id)}
                  onToggleSelect={handleToggleSelect}
                  onAddToCollection={(card) => handleBulkAddToCollection([card])}
                  onAddToDeck={handleBulkAddToDeck}
                  onToggleFavorite={handleToggleFavorite}
                  isFavorited={favoritedCards.has(card.id)}
                />
              ))}
            </div>
            
            {/* Infinite Scroll Loading Indicator */}
            {loadingMore && (
              <div className="flex justify-center py-8">
                <div className="flex items-center space-x-3">
                  <div className="animate-spin rounded-full h-8 w-8 border-b-2" style={{ borderColor: 'var(--text-accent)' }}></div>
                  <span style={{ color: 'var(--text-secondary)' }}>Loading more cards...</span>
                </div>
              </div>
            )}
            
            {/* Infinite Scroll Sentinel */}
            <div id="infinite-scroll-sentinel" className="h-4 w-full" />
            
            {/* Load More Button */}
            {hasMore && !loadingMore && (
              <div className="flex justify-center py-8">
                <button
                  onClick={loadMoreCards}
                  className="px-6 py-3 bg-gradient-to-r from-blue-500 to-purple-600 text-white rounded-lg hover:from-blue-600 hover:to-purple-700 transition-all duration-200 shadow-lg hover:shadow-xl"
                >
                  Load More Cards
                </button>
              </div>
            )}
            
            {/* End of results indicator */}
            {!hasMore && cards.length > 0 && (
              <div className="flex justify-center py-8">
                <span style={{ color: 'var(--text-secondary)' }}>No more cards to load</span>
              </div>
            )}
            

          </>
        )}
      </div>

      {/* Bulk Selection Toolbar */}
      <BulkSelectionToolbar
        selectedCards={selectedCards}
        onClearSelection={handleClearSelection}
        onAddToCollection={handleBulkAddToCollection}
        onAddToDeck={handleBulkAddToDeck}
        onMarkAsOwned={handleBulkMarkAsOwned}
        onRemoveFromOwned={handleBulkRemoveFromOwned}
        onBulkFavorite={handleBulkFavorite}
        onBulkDelete={handleBulkDelete}
      />

      {/* Collection Selection Modal */}
      <CollectionSelectionModal
        isOpen={showCollectionModal}
        onClose={() => setShowCollectionModal(false)}
        cards={cardsToAdd}
        onAddToCollections={handleAddToCollections}
      />
    </Layout>
  );
}

export default function Cards() {
  return (
    <ProtectedRoute 
      allowPublic={true} 
      publicFallback={<PublicCardsView />}
    >
      <AuthenticatedCards />
    </ProtectedRoute>
  );
}