"use client";

import { useState, useEffect } from "react";
import { Globe, Server, Wrench, Shield, Gamepad2, Code, Activity, Lightbulb, BookOpen, MessageSquare, ArrowRight, Tv, Plane, Camera, Stars, Music, Terminal, Cpu } from "lucide-react";
import { useLocale, useTranslations } from "next-intl";
import type { JSONContent } from "@tiptap/react";
import dynamic from "next/dynamic";
const RichTextClient = dynamic(() => import("./RichTextClient"), { ssr: false });
import CurrentlyReading from "./CurrentlyReading";
import ReadBooks from "./ReadBooks";
import { motion, AnimatePresence } from "framer-motion";
import { TechStackCategory, TechStackItem, Hobby, Snippet } from "@/lib/directus";
import Link from "next/link";
import ActivityFeed from "./ActivityFeed";
import BentoChat from "./BentoChat";
import { Skeleton } from "./ui/Skeleton";
import { LucideIcon, X, Copy, Check } from "lucide-react";

const iconMap: Record<string, LucideIcon> = {
  Globe, Server, Code, Wrench, Shield, Activity, Lightbulb, Gamepad2, BookOpen, Tv, Plane, Camera, Stars, Music, Terminal, Cpu
};

const About = () => {
  const locale = useLocale();
  const t = useTranslations("home.about");
  const [cmsDoc, setCmsDoc] = useState<JSONContent | null>(null);
  const [techStack, setTechStack] = useState<TechStackCategory[]>([]);
  const [hobbies, setHobbies] = useState<Hobby[]>([]);
  const [snippets, setSnippets] = useState<Snippet[]>([]);
  const [selectedSnippet, setSelectedSnippet] = useState<Snippet | null>(null);
  const [copied, setCopied] = useState(false);
  const [_cmsMessages, setCmsMessages] = useState<Record<string, string>>({});
  const [isLoading, setIsLoading] = useState(true);

  useEffect(() => {
    const fetchData = async () => {
      try {
        const [cmsRes, techRes, hobbiesRes, msgRes, snippetsRes] = await Promise.all([
          fetch(`/api/content/page?key=home-about&locale=${locale}`),
          fetch(`/api/tech-stack?locale=${locale}`),
          fetch(`/api/hobbies?locale=${locale}`),
          fetch(`/api/messages?locale=${locale}`),
          fetch(`/api/snippets?limit=3&featured=true`)
        ]);
        
        const cmsData = await cmsRes.json();
        if (cmsData?.content?.content) setCmsDoc(cmsData.content.content as JSONContent);
        
        const techData = await techRes.json();
        if (techData?.techStack) setTechStack(techData.techStack);
        
        const hobbiesData = await hobbiesRes.json();
        if (hobbiesData?.hobbies) setHobbies(hobbiesData.hobbies);

        const msgData = await msgRes.json();
        if (msgData?.messages) setCmsMessages(msgData.messages);

        const snippetsData = await snippetsRes.json();
        if (snippetsData?.snippets) setSnippets(snippetsData.snippets);
      } catch (error) {
        console.error("About data fetch failed:", error);
      } finally {
        setIsLoading(false);
      }
    };
    fetchData();
  }, [locale]);

  const copyToClipboard = (code: string) => {
    navigator.clipboard.writeText(code);
    setCopied(true);
    setTimeout(() => setCopied(false), 2000);
  };

  return (
    <section id="about" className="py-16 sm:py-24 md:py-32 px-4 sm:px-6 bg-[#fdfcf8] dark:bg-stone-950 transition-colors duration-500">
      <div className="max-w-7xl mx-auto">

        <div className="grid grid-cols-1 md:grid-cols-12 gap-4 sm:gap-6 md:gap-8">
          
          {/* 1. Large Bio Text */}
          <motion.div 
            initial={{ opacity: 0, y: 30 }}
            whileInView={{ opacity: 1, y: 0 }}
            viewport={{ once: true }}
            className="md:col-span-8 bg-white dark:bg-stone-900 rounded-2xl sm:rounded-[2.5rem] md:rounded-[3rem] p-6 sm:p-8 md:p-16 border border-stone-200/60 dark:border-stone-800/60 shadow-sm"
          >
            <div className="space-y-5 sm:space-y-6 md:space-y-8">
              <h2 className="text-3xl sm:text-4xl md:text-5xl lg:text-7xl font-black text-stone-900 dark:text-stone-50 tracking-tighter uppercase">
                {t("title")}<span className="text-emerald-600 dark:text-emerald-400">.</span>
              </h2>
              <div className="prose prose-stone dark:prose-invert max-w-none text-base sm:text-lg md:text-xl lg:text-2xl font-light leading-relaxed text-stone-600 dark:text-stone-400">
                {isLoading ? (
                  <div className="space-y-3">
                    <Skeleton className="h-6 w-full" />
                    <Skeleton className="h-6 w-[95%]" />
                    <Skeleton className="h-6 w-[90%]" />
                  </div>
                ) : cmsDoc ? (
                  <RichTextClient doc={cmsDoc} />
                ) : (
                  <p>{t("p1")} {t("p2")}</p>
                )}
              </div>
              <div className="pt-4 sm:pt-6 md:pt-8">
                <div className="inline-block bg-stone-50 dark:bg-stone-800 px-5 py-3 sm:px-8 sm:py-4 rounded-2xl sm:rounded-3xl border border-stone-100 dark:border-stone-700">
                   <p className="text-[10px] font-black uppercase tracking-[0.2em] text-emerald-700 dark:text-emerald-400 mb-1 sm:mb-2">{t("funFactTitle")}</p>
                   {isLoading ? <Skeleton className="h-5 w-48" /> : <p className="text-sm sm:text-base font-bold opacity-90">{t("funFactBody")}</p>}
                </div>
              </div>
            </div>
          </motion.div>

          {/* 2. Activity / Status Box */}
          <motion.div 
            initial={{ opacity: 0, y: 30 }}
            whileInView={{ opacity: 1, y: 0 }}
            viewport={{ once: true }}
            transition={{ delay: 0.1 }}
            className="md:col-span-4 bg-stone-900 rounded-2xl sm:rounded-[2.5rem] md:rounded-[3rem] p-6 sm:p-8 md:p-10 border border-stone-800 shadow-2xl text-white overflow-hidden relative flex flex-col"
          >
            <div className="relative z-10 h-full">
              <h3 className="text-lg sm:text-xl font-black mb-6 sm:mb-8 md:mb-10 flex items-center gap-2 uppercase tracking-widest text-liquid-mint">
                <Activity size={20} /> Status
              </h3>
              <ActivityFeed locale={locale} />
            </div>
            <div className="absolute top-0 right-0 w-40 h-40 bg-liquid-mint/10 blur-[100px] rounded-full" />
          </motion.div>

          {/* 3. AI Chat Box */}
          <motion.div 
            initial={{ opacity: 0, y: 30 }}
            whileInView={{ opacity: 1, y: 0 }}
            viewport={{ once: true }}
            transition={{ delay: 0.2 }}
            className="md:col-span-12 lg:col-span-4 bg-stone-50 dark:bg-stone-900 rounded-2xl sm:rounded-[2.5rem] md:rounded-[3rem] p-6 sm:p-8 md:p-10 border border-stone-200/60 dark:border-stone-800/60 flex flex-col shadow-sm"
          >
            <div className="flex items-center gap-2 mb-5 sm:mb-8">
              <MessageSquare className="text-liquid-purple" size={20} />
              <h3 className="text-xl sm:text-2xl font-black text-stone-900 dark:text-stone-50 uppercase tracking-tighter text-liquid-purple">AI Assistant</h3>
            </div>
            <div className="flex-1">
              <BentoChat />
            </div>
          </motion.div>

          {/* 4. Tech Stack */}
          <motion.div 
            initial={{ opacity: 0, y: 30 }}
            whileInView={{ opacity: 1, y: 0 }}
            viewport={{ once: true }}
            transition={{ delay: 0.3 }}
            className="md:col-span-12 lg:col-span-8 bg-white dark:bg-stone-900 rounded-2xl sm:rounded-[2.5rem] md:rounded-[3rem] p-6 sm:p-8 md:p-16 border border-stone-200/60 dark:border-stone-800/60 shadow-sm"
          >
            <div className="grid grid-cols-2 sm:grid-cols-2 md:grid-cols-4 gap-6 sm:gap-8 md:gap-12">
              {isLoading ? (
                Array.from({ length: 4 }).map((_, i) => (
                  <div key={i} className="space-y-6">
                    <Skeleton className="h-3 w-20" />
                    <div className="flex flex-wrap gap-2">
                      <Skeleton className="h-8 w-24 rounded-xl" />
                      <Skeleton className="h-8 w-16 rounded-xl" />
                      <Skeleton className="h-8 w-20 rounded-xl" />
                    </div>
                  </div>
                ))
              ) : (
                techStack.map((cat) => (
                  <div key={cat.id} className="space-y-6">
                    <h4 className="text-[10px] font-black uppercase tracking-[0.2em] text-stone-600 dark:text-stone-400">{cat.name}</h4>
                    <div className="flex flex-wrap gap-2">
                      {cat.items?.map((item: TechStackItem) => (
                        <span key={item.id} className="px-4 py-2 bg-stone-50 dark:bg-stone-800 rounded-xl text-xs font-bold border border-stone-100 dark:border-stone-700/50 hover:border-liquid-mint transition-colors">
                          {item.name}
                        </span>
                      ))}
                    </div>
                  </div>
                ))
              )}
            </div>
          </motion.div>

          {/* 5. Library, Gear & Snippets */}
          <div className="md:col-span-12 grid grid-cols-1 lg:grid-cols-12 gap-4 sm:gap-6 md:gap-8">
            {/* Library - Larger Span */}
            <motion.div
              initial={{ opacity: 0, y: 30 }}
              whileInView={{ opacity: 1, y: 0 }}
              viewport={{ once: true }}
              transition={{ delay: 0.4 }}
              className="lg:col-span-7 bg-white dark:bg-stone-900 rounded-2xl sm:rounded-[2.5rem] md:rounded-[3rem] p-6 sm:p-8 md:p-10 border border-stone-200/60 dark:border-stone-800/60 shadow-sm flex flex-col group overflow-hidden relative min-h-[350px] sm:min-h-[400px] md:min-h-[500px]"
            >
              <div className="relative z-10 flex flex-col h-full">
                <div className="flex justify-between items-center mb-6 sm:mb-8 md:mb-10">
                  <h3 className="text-xl sm:text-2xl font-black text-stone-900 dark:text-stone-50 flex items-center gap-2 sm:gap-3 uppercase tracking-tighter">
                    <BookOpen className="text-liquid-purple" size={24} /> Library
                  </h3>
                  <Link href={`/${locale}/books`} className="group/link flex items-center gap-2 text-stone-900 dark:text-stone-100 font-black border-b-2 border-stone-900 dark:border-stone-100 pb-1 hover:opacity-70 transition-all">
                    View All <ArrowRight size={14} className="group-hover/link:translate-x-1 transition-transform" />
                  </Link>
                </div>
                <CurrentlyReading />
                <div className="mt-6 flex-1">
                  <ReadBooks />
                </div>
              </div>
            </motion.div>

            <div className="lg:col-span-5 flex flex-col gap-4 sm:gap-6 md:gap-8">
              {/* My Gear (Uses) */}
              <motion.div
                initial={{ opacity: 0, y: 30 }}
                whileInView={{ opacity: 1, y: 0 }}
                viewport={{ once: true }}
                transition={{ delay: 0.5 }}
                className="bg-stone-900 rounded-2xl sm:rounded-[2.5rem] md:rounded-[3rem] p-6 sm:p-8 md:p-10 border border-stone-800 shadow-2xl text-white relative overflow-hidden group flex-1"
              >
                <div className="relative z-10">
                  <h3 className="text-xl sm:text-2xl font-black mb-5 sm:mb-8 flex items-center gap-2 sm:gap-3 uppercase tracking-tighter text-white">
                    <Cpu className="text-liquid-mint" size={24} /> My Gear
                  </h3>
                  <div className="grid grid-cols-2 gap-4 sm:gap-6">
                    <div className="space-y-1">
                      <p className="text-[9px] font-black uppercase tracking-widest text-stone-400">Main</p>
                      <p className="text-sm font-bold text-stone-100">MacBook M4 Pro</p>
                    </div>
                    <div className="space-y-1">
                      <p className="text-[9px] font-black uppercase tracking-widest text-stone-400">PC</p>
                      <p className="text-sm font-bold text-stone-100">RTX 3080 / R7</p>
                    </div>
                    <div className="space-y-1">
                      <p className="text-[9px] font-black uppercase tracking-widest text-stone-400">Server</p>
                      <p className="text-sm font-bold text-stone-100">IONOS & RPi 4</p>
                    </div>
                    <div className="space-y-1">
                      <p className="text-[9px] font-black uppercase tracking-widest text-stone-400">OS</p>
                      <p className="text-sm font-bold text-stone-100">macOS / Linux</p>
                    </div>
                  </div>
                </div>
                <div className="absolute bottom-0 right-0 w-32 h-32 bg-liquid-mint/10 blur-3xl rounded-full -mr-16 -mb-16" />
              </motion.div>

              <motion.div
                initial={{ opacity: 0, y: 30 }}
                whileInView={{ opacity: 1, y: 0 }}
                viewport={{ once: true }}
                transition={{ delay: 0.6 }}
                className="bg-white dark:bg-stone-900 rounded-2xl sm:rounded-[2.5rem] md:rounded-[3rem] p-6 sm:p-8 md:p-10 border border-stone-200/60 dark:border-stone-800/60 shadow-sm flex flex-col justify-between group overflow-hidden relative flex-1"
              >
                <div className="relative z-10">
                  <h3 className="text-xl sm:text-2xl font-black text-stone-900 dark:text-stone-50 flex items-center gap-2 sm:gap-3 uppercase tracking-tighter mb-4 sm:mb-6">
                    <Terminal className="text-liquid-purple" size={24} /> Snippets
                  </h3>
                  <div className="space-y-3">
                    {isLoading ? (
                      Array.from({ length: 2 }).map((_, i) => <Skeleton key={i} className="h-12 rounded-xl" />)
                    ) : snippets.length > 0 ? (
                      snippets.map((s) => (
                        <button 
                          key={s.id}
                          onClick={() => setSelectedSnippet(s)}
                          className="w-full text-left p-3 bg-stone-50 dark:bg-stone-800 rounded-xl border border-stone-100 dark:border-stone-700 hover:border-liquid-purple transition-all group/s"
                        >
                          <p className="text-[9px] font-black uppercase tracking-widest text-stone-600 dark:text-stone-400 mb-0.5 group-hover/s:text-liquid-purple transition-colors">{s.category}</p>
                          <p className="text-xs font-bold text-stone-800 dark:text-stone-200">{s.title}</p>
                        </button>
                      ))
                    ) : (
                      <p className="text-xs text-stone-500 dark:text-stone-400 italic">No snippets yet.</p>
                    )}
                  </div>
                </div>
                <Link href={`/${locale}/snippets`} className="mt-6 group/btn inline-flex items-center gap-2 text-[10px] font-black uppercase tracking-widest text-stone-600 dark:text-stone-400 hover:text-stone-900 dark:hover:text-white transition-colors">
                  Enter the Lab <ArrowRight size={12} className="group-hover/btn:translate-x-1 transition-transform" />
                </Link>
              </motion.div>
            </div>
          </div>

          {/* 6. Hobbies */}
          <motion.div 
            initial={{ opacity: 0, y: 30 }}
            whileInView={{ opacity: 1, y: 0 }}
            viewport={{ once: true }}
            transition={{ delay: 0.5 }}
            className="md:col-span-12"
          >
            <div className="bg-white dark:bg-stone-900 rounded-2xl sm:rounded-[2.5rem] md:rounded-[3rem] p-6 sm:p-8 md:p-16 border border-stone-200/60 dark:border-stone-800/60 shadow-sm flex flex-col justify-between">
              <div className="grid grid-cols-2 sm:grid-cols-2 lg:grid-cols-4 gap-3 sm:gap-4 md:gap-6 mb-6 sm:mb-8 md:mb-12">
                {isLoading ? (
                  Array.from({ length: 8 }).map((_, i) => <Skeleton key={i} className="h-24 rounded-2xl" />)
                ) : (
                  hobbies.map((hobby) => {
                    const Icon = iconMap[hobby.icon] || Lightbulb;
                    return (
                      <div key={hobby.id} className="p-3 sm:p-4 md:p-6 bg-stone-50 dark:bg-stone-800 rounded-xl sm:rounded-2xl border border-stone-100 dark:border-stone-700 hover:border-liquid-mint transition-colors group">
                        <div className="flex items-center gap-2 sm:gap-3 mb-1.5 sm:mb-3">
                          <Icon size={16} className="text-liquid-mint group-hover:scale-110 transition-transform shrink-0 sm:w-5 sm:h-5" />
                          <h4 className="font-bold text-xs sm:text-sm text-stone-800 dark:text-stone-200 uppercase tracking-tight">{hobby.title}</h4>
                        </div>
                        <p className="text-[11px] sm:text-xs text-stone-500 dark:text-stone-400 font-medium leading-relaxed hidden sm:block">
                          {hobby.description}
                        </p>
                      </div>
                    )
                  })
                )}
              </div>
              <div className="space-y-1 sm:space-y-2 border-t border-stone-100 dark:border-stone-800 pt-4 sm:pt-6 md:pt-8">
                <h3 className="text-xl sm:text-2xl font-black text-stone-900 dark:text-stone-50 uppercase tracking-tighter">{t("hobbiesTitle")}</h3>
                <p className="text-stone-500 font-light text-sm sm:text-base md:text-lg">{locale === 'de' ? 'Neugier über die Softwareentwicklung hinaus.' : 'Curiosity beyond software engineering.'}</p>
              </div>
            </div>
          </motion.div>

        </div>
      </div>

      {/* Snippet Modal */}
      <AnimatePresence>
        {selectedSnippet && (
          <div className="fixed inset-0 z-[100] flex items-center justify-center p-4 md:p-8">
            <motion.div 
              initial={{ opacity: 0 }}
              animate={{ opacity: 1 }}
              exit={{ opacity: 0 }}
              onClick={() => setSelectedSnippet(null)}
              className="absolute inset-0 bg-stone-950/60 backdrop-blur-md"
            />
            <motion.div 
              initial={{ opacity: 0, scale: 0.9, y: 20 }}
              animate={{ opacity: 1, scale: 1, y: 0 }}
              exit={{ opacity: 0, scale: 0.9, y: 20 }}
              className="relative w-full max-w-3xl bg-white dark:bg-stone-900 rounded-2xl sm:rounded-[2.5rem] shadow-2xl border border-stone-200 dark:border-stone-800 overflow-hidden flex flex-col max-h-[90vh]"
            >
              <div className="p-5 sm:p-8 md:p-10 overflow-y-auto">
                <div className="flex justify-between items-start mb-5 sm:mb-8">
                  <div>
                    <p className="text-[10px] font-black uppercase tracking-[0.2em] text-liquid-purple mb-1 sm:mb-2">{selectedSnippet.category}</p>
                    <h3 className="text-xl sm:text-2xl md:text-3xl font-black text-stone-900 dark:text-white uppercase tracking-tighter">{selectedSnippet.title}</h3>
                  </div>
                  <button 
                    onClick={() => setSelectedSnippet(null)}
                    className="p-3 bg-stone-50 dark:bg-stone-800 rounded-full hover:bg-stone-100 dark:hover:bg-stone-700 transition-colors"
                  >
                    <X size={20} />
                  </button>
                </div>

                <p className="text-sm sm:text-base text-stone-600 dark:text-stone-400 mb-5 sm:mb-8 leading-relaxed">
                  {selectedSnippet.description}
                </p>

                <div className="relative group/code">
                  <div className="absolute top-3 right-3 sm:top-4 sm:right-4 flex gap-2">
                    <button
                      onClick={() => copyToClipboard(selectedSnippet.code)}
                      className="p-2 sm:p-2.5 bg-white/10 backdrop-blur-md hover:bg-white/20 rounded-lg border border-white/10 transition-all text-white"
                      title="Copy Code"
                    >
                      {copied ? <Check size={16} className="text-emerald-400" /> : <Copy size={16} />}
                    </button>
                  </div>
                  <pre className="bg-stone-950 p-4 sm:p-6 rounded-xl sm:rounded-2xl overflow-x-auto text-xs sm:text-sm font-mono text-stone-300 border border-stone-800 leading-relaxed">
                    <code>{selectedSnippet.code}</code>
                  </pre>
                </div>
              </div>
              <div className="p-6 bg-stone-50 dark:bg-stone-800/50 border-t border-stone-100 dark:border-stone-800 text-center">
                <button 
                  onClick={() => setSelectedSnippet(null)}
                  className="text-[10px] font-black uppercase tracking-[0.2em] text-stone-600 dark:text-stone-400 hover:text-stone-900 dark:hover:text-white transition-colors"
                >
                  Close Laboratory
                </button>
              </div>
            </motion.div>
          </div>
        )}
      </AnimatePresence>
    </section>
  );
};

export default About;