import React, { useState, useRef, useLayoutEffect, useMemo } from 'react';
import { motion, AnimatePresence } from 'framer-motion';
import gsap from 'gsap';
import { ScrollTrigger } from 'gsap/ScrollTrigger';
import { Link } from 'react-router-dom';

gsap.registerPlugin(ScrollTrigger);

const servicesData = [
  {
    id: 2,
    category: 'Web Services',
    title: 'Bay Area Email Services',
    description: 'Enterprise cloud email with 99.99% uptime, local Texas support, 25 GB mailboxes, and business-grade delivery for $5 per inbox.',
    icon: 'mail',
    image: '/assets/services/business-email-services.webp',
    href: '/services/business-email-services'
  },
  {
    id: 7,
    category: 'IT Infrastructure',
    title: 'IT Help Desk',
    description: 'Fast and reliable help desk support for employees, resolving technical issues remotely or on-site.',
    icon: 'support_agent',
    image: '/assets/services/help-desk.webp',
    href: '/services/it-help-desk'
  },
  {
    id: 4,
    category: 'IT Infrastructure',
    title: 'New/Refurbished Desktop Hardware',
    description: 'Supply and installation of new or refurbished desktop hardware, tailored to meet your business requirements.',
    icon: 'computer',
    image: '/assets/services/desktop-hardware.webp',
    href: '/services/computer-support'
  },
  {
    id: 3,
    category: 'IT Infrastructure',
    title: 'Printer & Scanner Installation',
    description: 'Professional installation and configuration of printers and scanners to ensure seamless integration into your workflow.',
    icon: 'print',
    image: '/assets/services/printer-scanner.webp',
    href: '/services/printer-scanner-installation'
  },
  {
    id: 1,
    category: 'Web Services',
    title: 'Web Design',
    description: 'Professional websites with domain registration and DNS support to give your business a clean, reliable online presence.',
    icon: 'language',
    image: '/assets/services/business-it.webp',
    href: '/services/web-design-corpus-christi'
  },
  {
    id: 6,
    category: 'Networking',
    title: 'Shared Drive',
    description: 'Setup and management of shared drive solutions so your team can store, access, and organize files reliably.',
    icon: 'storage',
    image: '/assets/services/nas-storage.webp',
    href: '/services/shared-drive'
  },
  {
    id: 5,
    category: 'Networking',
    title: 'Network Infrastructure Support',
    description: 'Robust network solutions to ensure connectivity, security, and efficiency, including routers, access points, and switches.',
    icon: 'lan',
    image: '/assets/services/network-infrastructure.webp',
    href: '/services/network-infrastructure-support'
  }
];

const categories = ['All', 'IT Infrastructure', 'Web Services', 'Networking'];

interface ServicesProps {
  preview?: boolean;
  featuredIds?: number[];
}

const Services: React.FC<ServicesProps> = ({ preview = false, featuredIds }) => {
  const [activeCategory, setActiveCategory] = useState('All');
  const [showAll, setShowAll] = useState(false);
  const containerRef = useRef<HTMLDivElement>(null);

  // Determine if we should be in "preview mode" (showing only a subset)
  // This applies if preview is true OR if featuredIds are provided and we haven't clicked "Show More"
  const isRestrictedView = (preview || featuredIds) && !showAll;

  // Filter services based on category first (unless in restricted view with specific IDs, where we might want to ignore category or just show the specific ones)
  const filteredByCategory = activeCategory === 'All'
    ? servicesData
    : servicesData.filter(s => s.category === activeCategory);

  const displayedServices = useMemo(() => {
    if (isRestrictedView) {
      if (featuredIds && featuredIds.length > 0) {
        // Sort the services to match the order of featuredIds
        return featuredIds
          .map(id => servicesData.find(s => s.id === id))
          .filter((s): s is typeof servicesData[0] => s !== undefined);
      }
      // Fallback to first 3 if no IDs but preview is true
      return servicesData.slice(0, 3);
    }
    // Show all (filtered by category)
    return filteredByCategory;
  }, [isRestrictedView, featuredIds, filteredByCategory]);

  return (
    <motion.section
      ref={containerRef}
      id="services"
      initial={{ opacity: 0, y: 50 }}
      whileInView={{ opacity: 1, y: 0 }}
      viewport={{ once: true, margin: "-100px" }}
      transition={{ duration: 0.8, ease: "easeOut" }}
      className="py-24 bg-white dark:bg-[#0f0f0f] border-t border-gray-100 dark:border-white/5 bg-[radial-gradient(ellipse_80%_50%_at_50%_-20%,rgba(0,0,0,0.05),rgba(0,0,0,0))] dark:bg-[radial-gradient(ellipse_80%_50%_at_50%_-20%,rgba(255,255,255,0.05),rgba(255,255,255,0))]"
    >
      <div className="max-w-7xl mx-auto px-6">
        <div className="mb-16">
          <span className="text-xs font-semibold uppercase tracking-widest text-gray-500 dark:text-gray-500 mb-2 block">Our Services</span>
          <h2 className="font-display text-3xl md:text-4xl text-gray-900 dark:text-white">
            Comprehensive IT solutions <span className="text-gray-400 dark:text-gray-600">tailored to your business needs.</span>
          </h2>
        </div>

        {/* Categories - Hide in restricted view to keep it clean, or keep it? User said "mach nur das 3 services angezeigt werden". usually categories are for the full list. */}
        {!isRestrictedView && (
          <div className="flex gap-6 mb-12 border-b border-gray-200 dark:border-white/10 text-sm font-medium overflow-x-auto pb-2 no-scrollbar">
            {categories.map((cat) => (
              <button
                key={cat}
                onClick={() => setActiveCategory(cat)}
                className={`pb-2 whitespace-nowrap transition-colors relative ${activeCategory === cat
                  ? 'text-gray-900 dark:text-white'
                  : 'text-gray-500 dark:text-gray-500 hover:text-gray-800 dark:hover:text-gray-300'
                  }`}
              >
                {cat}
                {activeCategory === cat && (
                  <motion.div
                    layoutId="activeTab"
                    className="absolute bottom-0 left-0 right-0 h-0.5 bg-black dark:bg-white"
                  />
                )}
              </button>
            ))}
          </div>
        )}

        <div
          className="grid grid-cols-1 md:grid-cols-3 gap-6"
        >
          <AnimatePresence mode="popLayout">
            {displayedServices.map((service, index) => (
              <motion.div
                key={service.id}
                layout
                initial={{ opacity: 0 }}
                animate={{ opacity: 1 }}
                exit={{ opacity: 0 }}
                transition={{ duration: 0.2 }}
                whileHover={{ y: -10, transition: { duration: 0.3 } }}
                className="group relative bg-gray-50 dark:bg-white/5 border border-gray-200 dark:border-white/10 rounded-xl overflow-hidden hover:border-gray-300 dark:hover:border-white/30 hover:shadow-2xl transition-all duration-300"
              >
                {/* Image Container */}
                <div className="h-40 bg-gray-200 dark:bg-black/40 overflow-hidden relative">
                  <img
                    src={service.image}
                    alt={service.title}
                    loading={isRestrictedView ? 'lazy' : index < 3 ? 'eager' : 'lazy'}
                    decoding="async"
                    fetchPriority={isRestrictedView ? 'low' : index < 3 ? 'high' : 'low'}
                    className="w-full h-full object-cover transition-transform duration-700 group-hover:scale-110 opacity-100"
                  />
                  <div className="absolute inset-0 bg-gradient-to-t from-gray-50 dark:from-[#161616] to-transparent pointer-events-none"></div>
                </div>

                <div className="p-4 relative">
                  <motion.div
                    className="w-8 h-8 rounded-full bg-white dark:bg-white/10 flex items-center justify-center mb-3 border border-gray-200 dark:border-white/10"
                    whileHover={{ rotate: 360, backgroundColor: "#171717", color: "#ffffff", borderColor: "#171717" }}
                    transition={{ duration: 0.5 }}
                  >
                    <span className="material-symbols-outlined text-sm text-gray-900 dark:text-white group-hover:text-white">{service.icon}</span>
                  </motion.div>
                  <h3 className="font-display text-lg font-bold text-gray-900 dark:text-white mb-2">{service.title}</h3>
                  <p className="text-sm text-gray-600 dark:text-gray-400 leading-relaxed mb-3">
                    {service.description}
                  </p>
                  <Link to={service.href} className="inline-flex items-center text-xs font-bold uppercase tracking-wide text-gray-900 dark:text-white group-hover:text-gray-600 dark:group-hover:text-gray-300 transition-colors">
                    Learn More <motion.span
                      className="material-symbols-outlined text-xs ml-1"
                      animate={{ x: [0, 5, 0] }}
                      transition={{ repeat: Infinity, duration: 1.5, ease: "easeInOut", repeatDelay: 1 }}
                    >arrow_forward</motion.span>
                  </Link>
                </div>
              </motion.div>
            ))}
          </AnimatePresence>
        </div>

        {isRestrictedView && (
          <div className="mt-12 text-center">
            <button
              onClick={() => setShowAll(true)}
              className="selection-inverse inline-flex items-center gap-2 px-8 py-3 bg-black dark:bg-white text-white dark:text-black rounded-full font-medium hover:bg-gray-800 dark:hover:bg-gray-200 transition-colors"
            >
              Show More Services <span className="material-symbols-outlined text-sm">expand_more</span>
            </button>
          </div>
        )}

        {/* If we are showing all and originally had a restricted view, maybe show a "Show Less" but user didn't ask for it. The user said "then all are shown". */}
      </div>
    </motion.section>
  );
};

export default Services;
