import React, { useState, useEffect } from 'react';
import { Link } from 'react-router-dom';
import { Play, Info, Plus, Check, Clock, Loader2 } from 'lucide-react';
import { getMovieCard, getTvShowCard } from '../lib/api';
import { isInMyList, addToMyList, removeFromMyList } from '../lib/storage';
import { useToast } from '@/hooks/use-toast';

// -- Common Trailer type --
export interface Trailer {
  id: number;
  name: string;
  url: string;
  language: string;
  runtime: number;
}

// -- TV Show types --
export interface TvShowPortrait {
  id: number;
  image: string;
  thumbnail: string;
  language: string;
  type: number;
  score: number;
  width: number;
  height: number;
  includesText: boolean;
  thumbnailWidth: number;
  thumbnailHeight: number;
  updatedAt: number;
  status: {
      id: number;
      name: string | null;
  };
  tagOptions: any;
}

export interface TvShowBanner {
  id: number;
  image: string;
  thumbnail: string;
  language: string;
  type: number;
  score: number;
  width: number;
  height: number;
  includesText: boolean;
  thumbnailWidth: number;
  thumbnailHeight: number;
  updatedAt: number;
  status: {
      id: number;
      name: string | null;
  };
  tagOptions: any;
}

export interface TvShowCardData {
  title: string;
  year: string;
  image: string;
  portrait: TvShowPortrait[];
  banner: TvShowBanner[];
  overview: string;
  trailers: Trailer[];
  genres?: { name: string }[];
}

// -- Movie types --
export interface MoviePortrait {
  id: number;
  image: string;
  thumbnail: string;
  language: string;
  type: number;
  score: number;
  width: number;
  height: number;
  includesText: boolean;
}

export interface MovieBanner {
  id: number;
  image: string;
  thumbnail: string;
  language: string | null;
  type: number;
  score: number;
  width: number;
  height: number;
  includesText: boolean;
}

export interface MovieCardData {
  title: string;
  year: string;
  image: string;
  portrait: MoviePortrait[];
  banner: MovieBanner[];
  overview: string;
  trailers: Trailer[];
  genres?: { name: string }[];
}

interface ContentCardProps {
  type: 'movie' | 'tvshow';
  title: string;
  image?: string;
  description?: string;
  genre?: string[];
  year?: number | string;
  prefetchData?: boolean;
}

interface PlaybackProgress {
  currentTime: number;
  duration: number;
  lastPlayed: string;
  completed: boolean;
}

const ContentCard: React.FC<ContentCardProps> = ({ 
  type, 
  title,
  image,
  description: initialDescription,
  genre: initialGenre,
  year: initialYear,
  prefetchData = true
}) => {
  const [isHovered, setIsHovered] = useState(false);
  const [progress, setProgress] = useState<{ percent: number, completed: boolean } | null>(null);
  const [loading, setLoading] = useState(prefetchData);
  const [cardData, setCardData] = useState<MovieCardData | TvShowCardData | null>(null);
  const [inMyList, setInMyList] = useState(false);
  const [addingToList, setAddingToList] = useState(false);
  const [selectedImage, setSelectedImage] = useState<string | null>(null);
  const { toast } = useToast();
  
  const fallbackImage = '/placeholder.svg';
  const path = type === 'movie' ? `/movie/${encodeURIComponent(title)}` : `/tv-show/${encodeURIComponent(title)}`;
  
  // Derived data with fallbacks
  const description = cardData?.overview || initialDescription || '';
  const genre = (cardData?.genres?.map((g: any) => g.name) || initialGenre || []);
  const year = cardData?.year || initialYear || '';

  // Function to randomly select an image from available banners or portraits
  const selectRandomImage = (cardData: MovieCardData | TvShowCardData | null) => {
    if (!cardData) return null;
    
    // First try to get banner images (landscape)
    if (cardData.banner && cardData.banner.length > 0) {
      const randomIndex = Math.floor(Math.random() * cardData.banner.length);
      return cardData.banner[randomIndex].image;
    }
    
    // Fall back to portrait images if no banners
    if (cardData.portrait && cardData.portrait.length > 0) {
      const randomIndex = Math.floor(Math.random() * cardData.portrait.length);
      return cardData.portrait[randomIndex].image;
    }
    
    // Finally fall back to the default image
    return cardData.image || image || fallbackImage;
  };

  // Check if item is in user's list
  useEffect(() => {
    const checkMyList = async () => {
      const isInList = await isInMyList(title, type);
      setInMyList(isInList);
    };
    
    checkMyList();
  }, [title, type]);

  // Toggle my list status
  const toggleMyList = async (e: React.MouseEvent) => {
    e.preventDefault();
    e.stopPropagation();
    
    setAddingToList(true);
    
    try {
      if (inMyList) {
        await removeFromMyList(title, type);
        setInMyList(false);
        toast({
          title: "Removed from My List",
          description: `${title} has been removed from your list`
        });
      } else {
        await addToMyList({
          type,
          title,
          addedAt: new Date().toISOString()
        });
        setInMyList(true);
        toast({
          title: "Added to My List",
          description: `${title} has been added to your list`
        });
      }
    } catch (error) {
      console.error('Error updating My List:', error);
      toast({
        title: "Error",
        description: "Failed to update your list",
        variant: "destructive"
      });
    } finally {
      setAddingToList(false);
    }
  };
  
  // Load content data
  useEffect(() => {
    if (!prefetchData) {
      setLoading(false);
      return;
    }
    
    const fetchData = async () => {
      try {
        setLoading(true);
        
        let data;
        if (type === 'movie') {
          data = await getMovieCard(title);
        } else {
          data = await getTvShowCard(title);
          // TV show data is nested in a data property
          data = data?.data || data;
        }
        
        if (data) {
          setCardData(data);
          const randomImage = selectRandomImage(data);
          setSelectedImage(randomImage);
        }
      } catch (error) {
        console.error(`Error fetching ${type} data:`, error);
      } finally {
        setLoading(false);
      }
    };
    
    fetchData();
  }, [type, title, prefetchData, image]);

  // Load playback progress on mount
  useEffect(() => {
    try {
      const progressKey = type === 'movie' ? `movie-progress-${title}` : `playback-${title}`;
      const storedProgress = localStorage.getItem(progressKey);
      
      if (storedProgress) {
        let maxProgress = 0;
        let isCompleted = false;
        
        if (type === 'movie') {
          const progressData = JSON.parse(storedProgress);
          maxProgress = Math.min(100, Math.floor((progressData.currentTime / progressData.duration) * 100));
          isCompleted = progressData.completed;
        }
        // For TV shows, find the latest episode with progress
        else {
          const progressData = JSON.parse(storedProgress);
          let latestPlaybackTime = 0;
          
          Object.values(progressData).forEach((item: PlaybackProgress) => {
            if (new Date(item.lastPlayed).getTime() > latestPlaybackTime) {
              latestPlaybackTime = new Date(item.lastPlayed).getTime();
              maxProgress = Math.min(100, Math.floor((item.currentTime / item.duration) * 100));
              isCompleted = item.completed;
            }
          });
        } 
        
        if (maxProgress > 0 || isCompleted) {
          setProgress({ percent: maxProgress, completed: isCompleted });
        }
      }
    } catch (error) {
      console.error("Failed to load playback progress:", error);
    }
  }, [title, type]);

  const displayImage = selectedImage || image || fallbackImage;

  return (
    <div 
      className="relative flex-shrink-0 w-[240px] md:w-[280px] card-hover group"
      onMouseEnter={() => setIsHovered(true)}
      onMouseLeave={() => setIsHovered(false)}
    >
      <div className="relative rounded-md overflow-hidden shadow-xl bg-theme-card h-[140px] md:h-[160px]">
        {/* Base card image */}
        <Link to={path} className="block h-full">
          {loading ? (
            <div className="w-full h-full bg-theme-card flex justify-center items-center animate-pulse">
              <Loader2 className="w-8 h-8 animate-spin text-theme-primary/40" />
            </div>
          ) : (
            <img 
              src={displayImage} 
              alt={title} 
              className={`w-full h-full object-cover transition-all duration-300 ${
                isHovered ? 'scale-105 brightness-30' : 'scale-100 brightness-90'
              }`}
              onError={(e) => {
                const target = e.target as HTMLImageElement;
                target.src = fallbackImage;
              }}
            />
          )}
        </Link>
        
        {/* Progress indicator */}
        {progress && progress.percent > 0 && !progress.completed && (
          <div className="absolute bottom-0 left-0 right-0 h-1 bg-gray-800/50 z-10">
            <div 
              className="h-full bg-theme-primary" 
              style={{ width: `${progress.percent}%` }}
            ></div>
          </div>
        )}
        
        {/* Title overlay (simple version when not hovered) */}
        <div className={`absolute inset-x-0 bottom-0 p-3 ${isHovered ? 'opacity-0' : 'opacity-100'} 
          transition-opacity duration-300 bg-gradient-to-t from-black/90 to-transparent`}>
          <div className="flex items-center">
            <h3 className="font-bold text-sm line-clamp-1 flex-1">{title}</h3>
            {progress?.completed && (
              <div className="ml-1 bg-green-600 text-white p-0.5 rounded-full">
                <Check className="w-3 h-3" />
              </div>
            )}
          </div>
          <div className="flex justify-between items-center text-xs text-gray-300 mt-1">
            <div className="flex gap-1 items-center">
              {year && <span>{year}</span>}
              {genre && genre.length > 0 && <span className="hidden sm:inline">• {genre[0]}</span>}
            </div>
            {progress && !progress.completed && progress.percent > 0 && (
              <div className="flex items-center ml-1 text-xs text-gray-400">
                <Clock className="w-3 h-3 mr-0.5" />
                <span>{progress.percent}%</span>
              </div>
            )}
          </div>
        </div>
        
        {/* Expanded hover overlay with detailed info and buttons */}
        <div 
          className={`fixed group-hover:absolute inset-0 z-20 bg-gradient-to-b from-black/90 to-theme-background-dark
            transition-opacity duration-300 flex flex-col justify-between p-3 w-[240px] md:w-[280px] h-[140px] md:h-[160px]
            ${isHovered ? 'opacity-100' : 'opacity-0 pointer-events-none'}`}
        >
          {/* Top section - title and info */}
          <div>
            <div className="flex items-center justify-between">
              <h3 className="text-base font-bold line-clamp-1 flex-1">{title}</h3>
              {progress?.completed && (
                <div className="ml-1 bg-green-600 text-white p-0.5 rounded-full">
                  <Check className="w-3 h-3" />
                </div>
              )}
            </div>
            
            <div className="flex gap-1 items-center text-xs text-gray-300 mt-0.5">
              {year && <span>{year}</span>}
              {genre && genre.length > 0 && <span>• {genre[0]}</span>}
            </div>
            
            {description && (
              <p className="text-xs mt-2 line-clamp-2 text-gray-300">{description}</p>
            )}
            
            {progress && !progress.completed && progress.percent > 0 && (
              <div className="mt-2">
                <div className="relative w-full h-1 bg-gray-800 rounded overflow-hidden">
                  <div 
                    className="absolute left-0 top-0 h-full bg-theme-primary"
                    style={{ width: `${progress.percent}%` }}
                  ></div>
                </div>
                <p className="text-xs text-gray-400 mt-1">{progress.percent}% watched</p>
              </div>
            )}
          </div>
          
          {/* Bottom section - action buttons */}
          <div className="mt-2">
            <div className="flex justify-between space-x-2">
              <button 
                onClick={toggleMyList}
                disabled={addingToList}
                className={`flex-shrink-0 bg-theme-card/80 hover:bg-theme-card-hover border border-theme-border p-2 
                  rounded-full transition-colors ${addingToList ? 'opacity-50' : ''}`}
              >
                {addingToList ? (
                  <Loader2 className="w-4 h-4 animate-spin" />
                ) : inMyList ? (
                  <Check className="w-4 h-4" />
                ) : (
                  <Plus className="w-4 h-4" />
                )}
              </button>
              
              <Link 
                to={`${path}/watch`} 
                className="flex-grow bg-theme-primary hover:bg-theme-primary-hover text-white py-1.5 rounded flex items-center justify-center gap-1 font-medium text-sm transition-colors"
              >
                <Play className="w-4 h-4" />
                <span>{progress && progress.percent > 0 && !progress.completed ? "Resume" : "Play"}</span>
              </Link>
              
              <Link 
                to={path} 
                className="flex-shrink-0 bg-theme-card/80 hover:bg-theme-card-hover border border-theme-border p-2 rounded-full transition-colors"
              >
                <Info className="w-4 h-4" />
              </Link>
            </div>
          </div>
        </div>
      </div>
    </div>
  );
};

export default ContentCard;