'use client';

import React, { useState, useEffect } from 'react';
import Image from 'next/image';
import { motion, AnimatePresence } from 'framer-motion';
import { X, ChevronLeft, ChevronRight, Maximize2, ImageIcon } from 'lucide-react';
import { cn } from '@/lib/utils';

interface GalleryDialogProps {
  isOpen: boolean;
  onClose: () => void;
  images: string[];
  vehicleName: string;
  categoryName: string;
}

export function GalleryDialog({ isOpen, onClose, images, vehicleName, categoryName }: GalleryDialogProps) {
  const [currentIndex, setCurrentIndex] = useState(0);
  const [direction, setDirection] = useState(0);

  // Lock scroll when open
  useEffect(() => {
    if (isOpen) {
      document.body.style.overflow = 'hidden';
    } else {
      document.body.style.overflow = 'unset';
    }
    return () => {
      document.body.style.overflow = 'unset';
    };
  }, [isOpen]);

  if (!isOpen) return null;

  const nextImage = () => {
    setDirection(1);
    setCurrentIndex((prev) => (prev + 1) % images.length);
  };

  const prevImage = () => {
    setDirection(-1);
    setCurrentIndex((prev) => (prev - 1 + images.length) % images.length);
  };

  const variants = {
    enter: (direction: number) => ({
      x: direction > 0 ? 1000 : -1000,
      opacity: 0,
      scale: 0.9,
    }),
    center: {
      zIndex: 1,
      x: 0,
      opacity: 1,
      scale: 1,
    },
    exit: (direction: number) => ({
      zIndex: 0,
      x: direction < 0 ? 1000 : -1000,
      opacity: 0,
      scale: 0.9,
    }),
  };

  return (
    <AnimatePresence>
      {isOpen && (
        <motion.div
          initial={{ opacity: 0 }}
          animate={{ opacity: 1 }}
          exit={{ opacity: 0 }}
          className="fixed inset-0 z-[100] flex items-center justify-center bg-black/95 backdrop-blur-xl"
        >
          {/* Close Button */}
          <button
            onClick={onClose}
            className="absolute top-4 right-4 md:top-8 md:right-8 z-[110] p-3 md:p-4 text-white hover:text-primary transition-all bg-black/40 hover:bg-black/60 rounded-full"
          >
            <X className="w-6 h-6 md:w-8 md:h-8" />
          </button>

          {/* Header Info */}
          <div className="absolute top-4 left-4 md:top-8 md:left-8 z-[110] flex flex-col gap-1 md:gap-2 pr-20">
            <h3 className="text-sm md:text-2xl font-black uppercase tracking-[0.1em] md:tracking-[0.3em] text-white leading-tight">
              <span className="md:hidden block">{categoryName}</span>
              <span className="hidden md:block">{vehicleName}</span>
            </h3>
            <div className="flex items-center gap-2 md:gap-4 text-primary text-[8px] md:text-[10px] font-black tracking-widest uppercase">
              <ImageIcon className="w-3 h-3 md:w-4 md:h-4" />
              <span>{currentIndex + 1} / {images.length} Kép</span>
            </div>
          </div>

          {/* Main Stage */}
          <div className="relative w-full h-[50vh] md:h-[65vh] max-w-7xl px-4 md:px-12 flex items-center justify-center">
            <AnimatePresence initial={false} custom={direction}>
              {images.length > 0 && (
                <motion.div
                  key={currentIndex}
                  custom={direction}
                  variants={variants}
                  initial="enter"
                  animate="center"
                  exit="exit"
                  transition={{
                    x: { type: "spring", stiffness: 300, damping: 30 },
                    opacity: { duration: 0.3 },
                    scale: { duration: 0.4 }
                  }}
                  className="absolute inset-0 flex items-center justify-center p-2 md:p-8"
                >
                  <div className="relative w-full h-full shadow-2xl shadow-primary/10 rounded-[1.5rem] md:rounded-[2rem] overflow-hidden border border-white/10 bg-black/20">
                    <Image
                      src={images[currentIndex]}
                      alt={`${vehicleName} view ${currentIndex + 1}`}
                      fill
                      className="object-contain"
                      priority
                      quality={100}
                    />
                    
                    {/* Vignette Overlay - Lighter for object-contain */}
                    <div className="absolute inset-0 bg-gradient-to-t from-black/20 via-transparent to-transparent pointer-events-none" />
                  </div>
                </motion.div>
              )}
            </AnimatePresence>

            {/* Navigation Handles */}
            <button
              onClick={prevImage}
              className="absolute left-2 md:left-8 z-[110] w-12 h-12 md:w-16 md:h-16 rounded-full border border-white/10 bg-black/40 backdrop-blur-md flex items-center justify-center text-white hover:bg-primary hover:border-primary transition-all group active:scale-95"
            >
              <ChevronLeft className="w-6 h-6 md:w-8 md:h-8 group-hover:-translate-x-1 transition-transform" />
            </button>
            <button
              onClick={nextImage}
              className="absolute right-2 md:right-8 z-[110] w-12 h-12 md:w-16 md:h-16 rounded-full border border-white/10 bg-black/40 backdrop-blur-md flex items-center justify-center text-white hover:bg-primary hover:border-primary transition-all group active:scale-95"
            >
              <ChevronRight className="w-6 h-6 md:w-8 md:h-8 group-hover:translate-x-1 transition-transform" />
            </button>
          </div>

          {/* Thumbnails Sidebar/Bottom Bar */}
          <div className="absolute bottom-4 md:bottom-8 left-0 right-0 z-[110] flex justify-center gap-2 md:gap-4 px-4 md:px-8 overflow-x-auto pb-4 scrollbar-hide">
            {images.map((img, idx) => (
              <button
                key={idx}
                onClick={() => {
                  setDirection(idx > currentIndex ? 1 : -1);
                  setCurrentIndex(idx);
                }}
                className={cn(
                  "relative w-20 h-14 md:w-32 md:h-20 rounded-lg md:rounded-xl overflow-hidden border-2 transition-all flex-shrink-0 active:scale-95",
                  currentIndex === idx 
                    ? "border-primary scale-105 md:scale-110 shadow-lg shadow-primary/20" 
                    : "border-white/10 opacity-40 hover:opacity-100"
                )}
              >
                <Image
                  src={img}
                  alt="Thumbnail"
                  fill
                  className="object-cover"
                />
              </button>
            ))}
          </div>
          
          {/* Subtle noise/texture overlay for premium feel */}
          <div className="fixed inset-0 pointer-events-none opacity-[0.03] bg-[url('/images/noise.png')] mix-blend-overlay" />
        </motion.div>
      )}
    </AnimatePresence>
  );
}