import React, { useState } from 'react';
import { useQuery } from '@tanstack/react-query';
import { tcgApi } from '../services/tcgApi';
import CardSearch from '../components/cards/CardSearch';
import CardDatabaseBrowser from '../components/cards/CardDatabaseBrowser';
import CardManager from '../components/cards/CardManager';
import CardImageDisplay from '../components/CardImageDisplay';
import GlowingCard from '../components/GlowingCard';
import type { UserCard, CardFilters, Card } from '../types';

const Cards: React.FC = () => {
  const [searchTerm, setSearchTerm] = useState('');
  const [filters, setFilters] = useState<CardFilters>({
    game: '',
    rarity: '',
    status: 'all',
    search: '',
  });
  const [viewMode, setViewMode] = useState<'card' | 'list'>('card');
  const [showCardSearch, setShowCardSearch] = useState(false);
  const [showDatabaseBrowser, setShowDatabaseBrowser] = useState(false);
  const [editingCard, setEditingCard] = useState<string | null>(null);

  const { data: userCards = [], isLoading, error } = useQuery({
    queryKey: ['user-cards', { ...filters, search: searchTerm }],
    queryFn: () => tcgApi.cards.getUserCards({ ...filters, search: searchTerm }),
  });

  // Filter cards based on current filters
  const filteredCards = userCards.filter((userCard: UserCard) => {
    const card = userCard.card;
    if (!card) return false;
    
    if (filters.rarity && card.rarity !== filters.rarity) return false;
    if (filters.game && card.game !== filters.game) return false;
    if (filters.status && filters.status !== 'all' && userCard.status !== filters.status) return false;
    
    return true;
  });

  const getGameBadgeColor = (game: string) => {
    switch (game) {
      case 'MTG': return 'bg-orange-100 text-orange-800 dark:bg-orange-900/30 dark:text-orange-300';
      case 'POKEMON': return 'bg-yellow-100 text-yellow-800 dark:bg-yellow-900/30 dark:text-yellow-300';  
      case 'LORCANA': return 'bg-purple-100 text-purple-800 dark:bg-purple-900/30 dark:text-purple-300';
      case 'YUGIOH': return 'bg-blue-100 text-blue-800 dark:bg-blue-900/30 dark:text-blue-300';
      default: return 'bg-surface-100 text-surface-800 dark:bg-surface-700 dark:text-surface-300';
    }
  };

  const getRarityBadgeColor = (rarity: string) => {
    switch (rarity.toLowerCase()) {
      case 'common': return 'bg-surface-100 text-surface-800 dark:bg-surface-700 dark:text-surface-300';
      case 'uncommon': return 'bg-green-100 text-green-800 dark:bg-green-900/30 dark:text-green-300';
      case 'rare': return 'bg-blue-100 text-blue-800 dark:bg-blue-900/30 dark:text-blue-300';
      case 'super rare': return 'bg-purple-100 text-purple-800 dark:bg-purple-900/30 dark:text-purple-300';
      case 'legendary': return 'bg-yellow-100 text-yellow-800 dark:bg-yellow-900/30 dark:text-yellow-300';
      case 'mythic': return 'bg-red-100 text-red-800 dark:bg-red-900/30 dark:text-red-300';
      default: return 'bg-surface-100 text-surface-800 dark:bg-surface-700 dark:text-surface-300';
    }
  };

  const getStatusBadgeColor = (status: string) => {
    switch (status) {
      case 'owned': return 'bg-green-100 text-green-800 dark:bg-green-900/30 dark:text-green-300';
      case 'wanted': return 'bg-red-100 text-red-800 dark:bg-red-900/30 dark:text-red-300';
      default: return 'bg-surface-100 text-surface-800 dark:bg-surface-700 dark:text-surface-300';
    }
  };

  const getConditionBadgeColor = (condition: string) => {
    switch (condition) {
      case 'mint': return 'bg-emerald-100 text-emerald-800 dark:bg-emerald-900/30 dark:text-emerald-300';
      case 'near_mint': return 'bg-green-100 text-green-800 dark:bg-green-900/30 dark:text-green-300';
      case 'excellent': return 'bg-blue-100 text-blue-800 dark:bg-blue-900/30 dark:text-blue-300';
      case 'good': return 'bg-yellow-100 text-yellow-800 dark:bg-yellow-900/30 dark:text-yellow-300';
      case 'light_played': return 'bg-orange-100 text-orange-800 dark:bg-orange-900/30 dark:text-orange-300';
      case 'played': return 'bg-red-100 text-red-800 dark:bg-red-900/30 dark:text-red-300';
      case 'poor': return 'bg-gray-100 text-gray-800 dark:bg-gray-900/30 dark:text-gray-300';
      default: return 'bg-surface-100 text-surface-800 dark:bg-surface-700 dark:text-surface-300';
    }
  };

  return (
    <div className="space-y-6">
      {/* Header */}
      <div className="flex items-center justify-between">
        <div>
          <h1 className="text-2xl font-bold text-surface-900 dark:text-white">My Cards</h1>
          <p className="text-surface-600 dark:text-surface-400 mt-1">
            {filteredCards.length} cards in your collection
          </p>
        </div>
        
        <div className="flex space-x-3">
          <button
            onClick={() => setShowCardSearch(true)}
            className="bg-gradient-to-r from-primary-500 to-accent-500 hover:from-primary-600 hover:to-accent-600 text-white px-4 py-2 rounded-xl font-medium transition-all duration-200 shadow-md hover:shadow-lg transform hover:-translate-y-0.5"
          >
            <svg className="w-4 h-4 mr-2 inline" fill="none" stroke="currentColor" viewBox="0 0 24 24">
              <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M12 6v6m0 0v6m0-6h6m-6 0H6" />
            </svg>
            Add Cards
          </button>
          <button
            onClick={() => setShowDatabaseBrowser(true)}
            className="bg-gradient-to-r from-accent-500 to-primary-500 hover:from-accent-600 hover:to-primary-600 text-white px-4 py-2 rounded-xl font-medium transition-all duration-200 shadow-md hover:shadow-lg transform hover:-translate-y-0.5"
          >
            <svg className="w-4 h-4 mr-2 inline" 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>
            Browse Database
          </button>
        </div>
      </div>

      {/* Search and Filter Bar */}
      <div className="bg-white dark:bg-surface-800 rounded-xl border border-surface-200 dark:border-surface-700 p-4">
        <div className="space-y-4">
          {/* Search Bar */}
          <div className="relative">
            <div className="absolute inset-y-0 left-0 pl-3 flex items-center pointer-events-none">
              <svg className="h-5 w-5 text-surface-400" 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>
            </div>
            <input
              type="text"
              value={searchTerm}
              onChange={(e) => setSearchTerm(e.target.value)}
              placeholder="Search your cards..."
              className="w-full pl-10 pr-4 py-3 bg-surface-50 dark:bg-surface-700 border border-surface-300 dark:border-surface-600 rounded-xl text-surface-900 dark:text-white placeholder-surface-500 dark:placeholder-surface-400 focus:outline-none focus:ring-2 focus:ring-primary-500 transition-colors"
            />
          </div>

          {/* Filters and View Toggle */}
          <div className="flex items-center justify-between">
            <div className="flex space-x-2 overflow-x-auto pb-2">
              <select 
                value={filters.game}
                onChange={(e) => setFilters(prev => ({ ...prev, game: e.target.value }))}
                className="px-3 py-2 bg-surface-50 dark:bg-surface-700 border border-surface-300 dark:border-surface-600 rounded-lg text-sm focus:outline-none focus:ring-2 focus:ring-primary-500 transition-colors whitespace-nowrap"
              >
                <option value="">All Games</option>
                <option value="MTG">Magic: The Gathering</option>
                <option value="POKEMON">Pokémon</option>
                <option value="LORCANA">Disney Lorcana</option>
                <option value="YUGIOH">Yu-Gi-Oh!</option>
              </select>
              
              <select 
                value={filters.rarity}
                onChange={(e) => setFilters(prev => ({ ...prev, rarity: e.target.value }))}
                className="px-3 py-2 bg-surface-50 dark:bg-surface-700 border border-surface-300 dark:border-surface-600 rounded-lg text-sm focus:outline-none focus:ring-2 focus:ring-primary-500 transition-colors whitespace-nowrap"
              >
                <option value="">All Rarities</option>
                <option value="Common">Common</option>
                <option value="Uncommon">Uncommon</option>
                <option value="Rare">Rare</option>
                <option value="Super Rare">Super Rare</option>
                <option value="Legendary">Legendary</option>
                <option value="Mythic">Mythic</option>
              </select>

              <select 
                value={filters.status}
                onChange={(e) => setFilters(prev => ({ ...prev, status: e.target.value as any }))}
                className="px-3 py-2 bg-surface-50 dark:bg-surface-700 border border-surface-300 dark:border-surface-600 rounded-lg text-sm focus:outline-none focus:ring-2 focus:ring-primary-500 transition-colors whitespace-nowrap"
              >
                <option value="all">All Cards</option>
                <option value="owned">Owned</option>
                <option value="wanted">Wanted</option>
              </select>
            </div>

            {/* View Toggle */}
            <div className="flex bg-surface-100 dark:bg-surface-700 rounded-lg p-1">
              <button
                onClick={() => setViewMode('card')}
                className={`p-2 rounded-md transition-colors ${
                  viewMode === 'card'
                    ? 'bg-white dark:bg-surface-600 text-surface-900 dark:text-white shadow-sm'
                    : 'text-surface-600 dark:text-surface-400 hover:text-surface-900 dark:hover:text-white'
                }`}
              >
                <svg className="w-4 h-4" 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-md transition-colors ${
                  viewMode === 'list'
                    ? 'bg-white dark:bg-surface-600 text-surface-900 dark:text-white shadow-sm'
                    : 'text-surface-600 dark:text-surface-400 hover:text-surface-900 dark:hover:text-white'
                }`}
              >
                <svg className="w-4 h-4" 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>
      </div>

      {/* Loading State */}
      {isLoading && (
        <div className="flex items-center justify-center py-12">
          <div className="flex flex-col items-center">
            <div className="w-8 h-8 bg-gradient-to-r from-primary-500 to-accent-500 rounded-full flex items-center justify-center animate-bounce-subtle mb-3">
              <svg className="w-4 h-4 text-white" fill="currentColor" viewBox="0 0 20 20">
                <path 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 11V9a2 2 0 012-2m0 0V5a2 2 0 012-2h6a2 2 0 012 2v2M7 7h10" />
              </svg>
            </div>
            <p className="text-surface-600 dark:text-surface-400 text-sm">Loading your cards...</p>
          </div>
        </div>
      )}

      {/* Error State */}
      {error && (
        <div className="bg-red-50 dark:bg-red-900/20 border border-red-200 dark:border-red-800 rounded-xl p-4 mb-6">
          <p className="text-red-800 dark:text-red-400">Error loading cards. Please try again.</p>
        </div>
      )}

      {/* Cards Display */}
      {!isLoading && !error && (
        <>
          {filteredCards.length === 0 ? (
            <div className="bg-white dark:bg-surface-800 rounded-xl border border-surface-200 dark:border-surface-700 p-8">
              <div className="text-center">
                <div className="w-16 h-16 bg-surface-100 dark:bg-surface-700 rounded-2xl flex items-center justify-center mx-auto mb-6">
                  <svg className="w-8 h-8 text-surface-400" 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 11V9a2 2 0 012-2m0 0V5a2 2 0 012-2h6a2 2 0 012 2v2M7 7h10" />
                  </svg>
                </div>
                <h3 className="text-xl font-semibold text-surface-900 dark:text-white mb-2">
                  {userCards.length === 0 ? 'No cards yet' : 'No matching cards'}
                </h3>
                <p className="text-surface-600 dark:text-surface-400 mb-6">
                  {userCards.length === 0 
                    ? 'Start building your collection by adding cards'
                    : 'Try adjusting your search or filters'
                  }
                </p>
                {userCards.length === 0 && (
                  <div className="flex flex-col sm:flex-row gap-3 items-center justify-center">
                    <button
                      onClick={() => setShowCardSearch(true)}
                      className="bg-gradient-to-r from-primary-500 to-accent-500 hover:from-primary-600 hover:to-accent-600 text-white px-6 py-3 rounded-xl font-medium transition-all duration-200 shadow-md hover:shadow-lg transform hover:-translate-y-0.5"
                    >
                      Browse Cards
                    </button>
                    <button className="bg-surface-100 dark:bg-surface-700 hover:bg-surface-200 dark:hover:bg-surface-600 text-surface-800 dark:text-surface-300 px-6 py-3 rounded-xl font-medium transition-colors">
                      Scan Cards
                    </button>
                  </div>
                )}
              </div>
            </div>
          ) : viewMode === 'card' ? (
            /* Card View */
            <div className="grid grid-cols-1 sm:grid-cols-2 lg:grid-cols-3 xl:grid-cols-4 gap-4">
              {filteredCards.map((userCard: UserCard) => {
                const card = userCard.card;
                if (!card) return null;

                return (
                  <GlowingCard key={userCard.id} rarity={card.rarity} className="bg-white dark:bg-surface-800 rounded-xl shadow overflow-hidden hover:shadow-lg transition-all duration-200">
                    {/* Card Image */}
                    <div className="flex justify-center p-4 bg-surface-50 dark:bg-surface-700/50">
                      <div className="relative">
                        <CardImageDisplay
                          card={card}
                          size="large"
                          className="mx-auto"
                        />
                        {/* Status Badge */}
                        <div className="absolute -top-2 -right-2">
                          <span className={`px-2 py-1 rounded-full text-xs font-medium ${getStatusBadgeColor(userCard.status)}`}>
                            {userCard.status === 'owned' ? '✅' : '❤️'}
                          </span>
                        </div>
                        {/* Quantity Badge */}
                        {userCard.quantity > 1 && (
                          <div className="absolute -bottom-2 -right-2">
                            <span className="bg-surface-800 dark:bg-surface-200 text-white dark:text-surface-900 text-xs font-bold px-2 py-1 rounded-full">
                              {userCard.quantity}x
                            </span>
                          </div>
                        )}
                      </div>
                    </div>
                    
                    {/* Card Info */}
                    <div className="p-4">
                      {/* Header */}
                      <div className="flex justify-between items-start mb-3">
                        <div className="flex-1 min-w-0">
                          <h3 className="font-semibold text-surface-900 dark:text-white truncate" title={card.name}>
                            {card.name}
                          </h3>
                          <p className="text-sm text-surface-600 dark:text-surface-400 truncate">{card.set_name}</p>
                        </div>
                        <span className={`inline-flex items-center px-2 py-1 rounded-full text-xs font-medium ${getGameBadgeColor(card.game)}`}>
                          {card.game}
                        </span>
                      </div>

                      {/* Quick Stats */}
                      <div className="space-y-1 mb-3">
                        {card.card_type && (
                          <p className="text-xs text-surface-600 dark:text-surface-400 truncate" title={card.card_type}>
                            {card.card_type}
                          </p>
                        )}
                        
                        <div className="flex justify-between items-center">
                          {card.mana_cost && (
                            <span className="text-xs text-surface-600 dark:text-surface-400">
                              Cost: {card.mana_cost}
                            </span>
                          )}
                          
                          {(card.power && card.toughness) && (
                            <span className="text-xs text-surface-600 dark:text-surface-400">
                              {card.power}/{card.toughness}
                            </span>
                          )}
                        </div>
                      </div>

                      {/* Footer */}
                      <div className="flex items-center justify-between mb-3">
                        <span className={`inline-flex items-center px-2 py-1 rounded-full text-xs font-medium ${getRarityBadgeColor(card.rarity)}`}>
                          {card.rarity}
                        </span>
                        
                        {card.current_price && (
                          <span className="text-sm font-medium text-green-600 dark:text-green-400">
                            ${card.current_price.toFixed(2)}
                          </span>
                        )}
                      </div>

                      {/* Condition Badge */}
                      {userCard.condition && userCard.status === 'owned' && (
                        <div className="mb-3">
                          <span className={`inline-flex items-center px-2 py-1 rounded-full text-xs font-medium ${getConditionBadgeColor(userCard.condition)}`}>
                            {userCard.condition.replace('_', ' ').toUpperCase()}
                          </span>
                        </div>
                      )}

                      {/* Edit Button */}
                      <button
                        onClick={() => setEditingCard(userCard.id)}
                        className="w-full bg-surface-100 dark:bg-surface-700 hover:bg-surface-200 dark:hover:bg-surface-600 text-surface-800 dark:text-surface-300 py-2 px-3 rounded-lg text-sm font-medium transition-colors"
                      >
                        Edit Card
                      </button>
                    </div>
                  </GlowingCard>
                );
              })}
            </div>
          ) : (
            /* List View */
            <div className="bg-white dark:bg-surface-800 rounded-xl border border-surface-200 dark:border-surface-700 overflow-hidden">
              <div className="space-y-1">
                {filteredCards.map((userCard: UserCard) => {
                  const card = userCard.card;
                  if (!card) return null;

                  return (
                    <div key={userCard.id} className="flex items-center p-4 hover:bg-surface-50 dark:hover:bg-surface-700/50 transition-colors">
                      {/* Card Image */}
                      <div className="w-12 h-16 bg-surface-200 dark:bg-surface-700 rounded-lg flex items-center justify-center flex-shrink-0 mr-4">
                        {card.image_url ? (
                          <img
                            src={card.image_url}
                            alt={card.name}
                            className="w-full h-full object-cover rounded-lg"
                          />
                        ) : (
                          <svg className="w-4 h-4 text-surface-400" 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 11V9a2 2 0 012-2m0 0V5a2 2 0 012-2h6a2 2 0 012 2v2M7 7h10" />
                          </svg>
                        )}
                      </div>

                      {/* Card Info */}
                      <div className="flex-1 min-w-0">
                        <h3 className="font-semibold text-surface-900 dark:text-white truncate">
                          {card.name}
                        </h3>
                        <p className="text-sm text-surface-600 dark:text-surface-400 truncate">
                          {card.set_name}
                        </p>
                        <div className="flex items-center space-x-2 mt-1">
                          <span className={`px-2 py-1 rounded-full text-xs font-medium ${getGameBadgeColor(card.game)}`}>
                            {card.game}
                          </span>
                          <span className={`px-2 py-1 rounded-full text-xs font-medium ${getRarityBadgeColor(card.rarity)}`}>
                            {card.rarity}
                          </span>
                          <span className={`px-2 py-1 rounded-full text-xs font-medium ${getStatusBadgeColor(userCard.status)}`}>
                            {userCard.status}
                          </span>
                        </div>
                      </div>

                      {/* Quantity and Price */}
                      <div className="text-right mr-4">
                        <div className="text-sm font-medium text-surface-900 dark:text-white">
                          {userCard.quantity}x
                        </div>
                        {card.current_price && (
                          <div className="text-sm text-green-600 dark:text-green-400">
                            ${(card.current_price * userCard.quantity).toFixed(2)}
                          </div>
                        )}
                      </div>

                      {/* Edit Button */}
                      <button
                        onClick={() => setEditingCard(userCard.id)}
                        className="p-2 text-surface-400 hover:text-surface-600 dark:hover:text-surface-300 rounded-lg transition-colors"
                      >
                        <svg className="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                          <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M11 5H6a2 2 0 00-2 2v11a2 2 0 002 2h11a2 2 0 002-2v-5m-1.414-9.414a2 2 0 112.828 2.828L11.828 15H9v-2.828l8.586-8.586z" />
                        </svg>
                      </button>
                    </div>
                  );
                })}
              </div>
            </div>
          )}
        </>
      )}

      {/* Card Search Modal */}
      <CardSearch
        isOpen={showCardSearch}
        onClose={() => setShowCardSearch(false)}
      />

      {/* Card Manager Modal */}
      {editingCard && (
        <CardManager
          isOpen={!!editingCard}
          onClose={() => setEditingCard(null)}
          cardId={editingCard}
        />
      )}

      {/* Database Browser Modal */}
      <CardDatabaseBrowser
        isOpen={showDatabaseBrowser}
        onClose={() => setShowDatabaseBrowser(false)}
        onCardSelect={(card: Card) => {
          // Handle card selection from database browser
          console.log('Selected card from database:', card);
          setShowDatabaseBrowser(false);
        }}
      />
    </div>
  );
};

export default Cards;