'use client';

import React, { useState, useRef, useCallback, useMemo } from 'react';
import { m, AnimatePresence } from 'framer-motion';
import { MapPin, CheckCircle2, ArrowUpRight } from 'lucide-react';
import Image from 'next/image';
import { usePathname } from 'next/navigation';
import Link from 'next/link';
import { AnimatedGlossyBorder } from '@/components/ui/AnimatedGlossyBorder';
import { Location, projectLocations } from '@/lib/map-data';
import { standorteLocations } from '@/lib/standorte-data';
import { useLocale, useTranslations } from 'next-intl';

interface Stat {
  value: string;
  suffix?: string;
  label: string;
  href?: string;
}

interface InteractiveGermanyMapProps {
  badge?: string;
  title?: React.ReactNode;
  description?: string;
  stats?: Stat[];
  locations?: Location[];
  isHero?: boolean;
  hideStandorte?: boolean;
}

const MinorNode = React.memo(({ loc, isActive, onEnter, onLeave }: { loc: Location, isActive: boolean, onEnter: (loc: Location) => void, onLeave: () => void }) => (
  <div
    className={`absolute group/minor cursor-pointer w-8 h-8 md:w-5 md:h-5 flex items-center justify-center ${isActive ? 'z-[60]' : 'z-10 hover:z-30'}`}
    style={{
      left: `${loc.x}%`,
      top: `${loc.y}%`,
      transform: 'translate(-50%, -50%)',
    }}
    onMouseEnter={() => onEnter(loc)}
    onMouseLeave={onLeave}
    onTouchStart={() => onEnter(loc)}
    onClick={() => onEnter(loc)}
  >
    <div className={`w-1.5 h-1.5 rounded-full transition-all duration-300 ${isActive ? 'bg-white scale-150 shadow-[0_0_10px_rgba(130,237,32,1)]' : 'bg-primary/80 group-hover/minor:bg-white group-hover/minor:scale-150'}`} />
    <div className="absolute inset-0 m-auto w-2 h-2 bg-primary rounded-full opacity-0 group-hover/minor:animate-ping" />
  </div>
));
MinorNode.displayName = 'MinorNode';

const MajorNode = React.memo(({ loc, isActive, idx, onEnter, onLeave }: { loc: Location, isActive: boolean, idx: number, onEnter: (loc: Location) => void, onLeave: () => void }) => {
  const isHQ = loc.type === 'hq';
  const isBranch = loc.type === 'branch';
  return (
    <div
      className={`absolute transform -translate-x-1/2 -translate-y-1/2 group/pin cursor-pointer w-16 h-16 flex items-center justify-center ${isActive ? 'z-[60]' : 'z-20 hover:z-40'}`}
      style={{ left: `${loc.x}%`, top: `${loc.y}%` }}
      onMouseEnter={() => onEnter(loc)}
      onMouseLeave={onLeave}
      onTouchStart={() => onEnter(loc)}
      onClick={() => onEnter(loc)}
    >
      {(isHQ || isBranch) && (
        <div className="absolute inset-0 m-auto w-6 h-6 rounded-full animate-ping bg-primary/50 scale-150" />
      )}
      <m.div
        initial={{ scale: 0 }}
        animate={{ scale: 1 }}
        transition={{ type: 'spring', delay: idx * 0.1 }}
        className={`relative flex items-center justify-center rounded-full shadow-[0_0_20px_rgba(130,237,32,0.6)] transition-transform duration-300 ${
          isActive ? 'scale-125 z-30 ring-4 ring-primary/40' : 'scale-100 group-hover/pin:scale-110'
        } ${
          isHQ || isBranch
            ? 'w-7 h-7 bg-primary text-[#050B14]'
            : 'w-4 h-4 bg-white ring-[3px] ring-primary'
        }`}
      >
        {(isHQ || isBranch) && <MapPin className="w-4 h-4" />}
      </m.div>
    </div>
  );
});
MajorNode.displayName = 'MajorNode';

export function InteractiveGermanyMap({
  badge,
  title,
  description,
  stats,
  locations = projectLocations,
  isHero = false,
  hideStandorte = false
}: InteractiveGermanyMapProps) {
  const [activeLocation, setActiveLocation] = useState<Location | null>(null);
  const hoverTimeoutRef = useRef<NodeJS.Timeout | null>(null);

  const handleMouseEnter = useCallback((loc: Location) => {
    if (hoverTimeoutRef.current) {
      clearTimeout(hoverTimeoutRef.current);
      hoverTimeoutRef.current = null;
    }
    setActiveLocation(loc);
  }, []);

  const handleMouseLeave = useCallback(() => {
    const timeout = setTimeout(() => {
      setActiveLocation(null);
    }, 200);
    hoverTimeoutRef.current = timeout;
  }, []);

  const pathname = usePathname();
  const locale = useLocale();
  const t = useTranslations('InteractiveGermanyMap');
  const tStandard = useTranslations('StandardPage');

  const finalStats = stats || [
    { value: '100', suffix: '%', label: locale === 'en' ? 'Nationwide Reach' : 'Überregionale Reichweite' },
    { value: '3', suffix: '', label: locale === 'en' ? 'Operational Locations' : 'Operative Standorte', href: `/${locale}/standorte` },
  ];

  const finalBadge = badge || tStandard('badge');
  const finalTitle = title || (locale === 'en' ? <>Nationwide<br/>in operation for you.</> : <>Deutschlandweit<br/>für Sie im Einsatz.</>);
  const finalDescription = description || (locale === 'en' ? 'From our strategic locations in Guben, Kirchheilingen and Bülstedt, we control and implement complex infrastructure projects nationwide.' : 'Von unseren strategischen Standorten in Guben, Kirchheilingen und Bülstedt steuern und realisieren wir komplexe Infrastrukturprojekte im gesamten Bundesgebiet.');

  const finalLocations = useMemo(() => {
    if (hideStandorte) return locations;
    const base = [...locations];
    standorteLocations.forEach(sl => {
      if (!base.some(l => l.id === sl.id)) {
        base.push(sl as Location);
      }
    });
    return base;
  }, [locations, hideStandorte]);

  const mapBackground = useMemo(() => (
    <div className="absolute inset-0 opacity-[0.25] mix-blend-screen drop-shadow-2xl brightness-200 pointer-events-none transform-gpu">
      <Image
        src="/germany-map.svg"
        alt={locale === 'en' ? "Map of Germany" : "Deutschlandkarte"}
        fill
        className="object-cover"
        priority
      />
    </div>
  ), [locale]);

  return (
    <div key={isHero ? `hero-map-${pathname}` : undefined} className={isHero ? "relative w-full" : "relative w-full max-w-7xl mx-auto py-12 md:py-24 px-4 sm:px-6 mt-16 md:mt-20"}>
      <div className={`bg-[#050B14] ${isHero ? 'pt-32 pb-16 md:pt-40 md:pb-24' : 'rounded-[2.5rem] md:rounded-[3.5rem] shadow-2xl border border-white/5'} overflow-visible relative group/map`}>
        {!isHero && <AnimatedGlossyBorder opacity={0.7} className="z-30" />}
        
        <div className={`absolute inset-0 bg-gradient-to-br from-[#050B14] via-[#0A1322] to-[#050B14] ${!isHero && 'rounded-[2.5rem] md:rounded-[3.5rem]'} overflow-hidden`} />
        <div className="absolute top-0 right-0 w-[800px] h-[800px] bg-primary/5 rounded-full blur-[120px] pointer-events-none translate-x-1/3 -translate-y-1/3 overflow-hidden" />
        
        <div className={`relative z-10 grid grid-cols-1 lg:grid-cols-2 xl:grid-cols-12 gap-12 items-center min-h-[600px] ${isHero ? 'max-w-7xl mx-auto px-4 sm:px-6' : 'p-8 md:p-12 lg:p-16'}`}>
          
          <div className="xl:col-span-5 text-white z-20">
            <div className="inline-flex items-center gap-2 px-3 py-1.5 rounded-full bg-primary/10 border border-primary/20 text-primary text-xs font-bold uppercase tracking-wider mb-8">
              <MapPin className="w-4 h-4" />
              <span>{finalBadge}</span>
            </div>
            
            {isHero ? (
              <h1 className="font-heading text-3xl md:text-4xl lg:text-5xl xl:text-6xl font-extrabold mb-6 leading-[1.1] text-transparent bg-clip-text bg-gradient-to-r from-white to-white/70 text-balance">
                {finalTitle}
              </h1>
            ) : (
              <h3 className="font-heading text-3xl md:text-4xl lg:text-5xl xl:text-6xl font-extrabold mb-6 leading-[1.1] text-transparent bg-clip-text bg-gradient-to-r from-white to-white/70 text-balance">
                {finalTitle}
              </h3>
            )}
            
            <p className="text-white/60 text-lg mb-12 leading-relaxed">
              {finalDescription}
            </p>

            <div className="grid grid-cols-2 gap-4">
              {finalStats.map((stat, i) => {
                const StatCard = () => (
                  <div className={`bg-white/5 border border-white/10 rounded-2xl p-6 backdrop-blur-md relative overflow-hidden group h-full ${stat.href ? 'cursor-pointer' : ''}`}>
                    <div className="absolute inset-0 bg-gradient-to-br from-primary/10 to-transparent opacity-0 group-hover:opacity-100 transition-opacity duration-500" />
                    <div className="relative z-10 flex flex-col h-full justify-between">
                      <div className="text-3xl md:text-4xl font-extrabold text-white mb-1 flex items-baseline gap-1">
                        {stat.value}<span className="text-xl text-primary">{stat.suffix}</span>
                      </div>
                      <div className={`text-sm text-white/50 font-medium flex items-center ${stat.href ? 'group-hover:text-primary transition-colors' : ''}`}>
                        {stat.label}
                        {stat.href && <ArrowUpRight className="w-4 h-4 ml-1 opacity-0 -translate-y-1 translate-x-1 group-hover:opacity-100 group-hover:translate-y-0 group-hover:translate-x-0 transition-all duration-300" />}
                      </div>
                    </div>
                  </div>
                );

                return stat.href ? (
                  <Link key={i} href={stat.href} className="block group/link hover:-translate-y-1 transition-transform duration-300">
                    <StatCard />
                  </Link>
                ) : (
                  <div key={i}>
                    <StatCard />
                  </div>
                );
              })}
            </div>
          </div>

          <div className="xl:col-span-7 relative flex items-center justify-center min-h-[500px] lg:min-h-[700px] z-10 pointer-events-none">
            <div className="relative w-full max-w-[600px] aspect-square group pointer-events-auto">
              
              {mapBackground}

              {finalLocations.filter(l => l.type === 'minor_node').map((loc, idx) => (
                <MinorNode
                  key={`minor-${loc.id || idx}`}
                  loc={loc}
                  isActive={activeLocation === loc}
                  onEnter={handleMouseEnter}
                  onLeave={handleMouseLeave}
                />
              ))}

              {finalLocations.filter(l => l.type !== 'minor_node').map((loc, idx) => (
                <MajorNode
                  key={loc.id}
                  loc={loc}
                  idx={idx}
                  isActive={activeLocation?.id === loc.id}
                  onEnter={handleMouseEnter}
                  onLeave={handleMouseLeave}
                />
              ))}

              <AnimatePresence>
                {activeLocation && (
                  <m.div
                    key="tooltip"
                    initial={{ opacity: 0, y: 10, scale: 0.95 }}
                    animate={{ opacity: 1, y: 0, scale: 1 }}
                    exit={{ opacity: 0, y: 10, scale: 0.95 }}
                    transition={{ duration: 0.2 }}
                    className="absolute z-[9999] pointer-events-auto bottom-[-60px] left-1/2 -translate-x-1/2 w-[calc(100vw_-_2rem)] max-w-[320px] md:w-max md:bottom-auto md:left-[var(--md-left)] md:top-[var(--md-top)] md:[transform:var(--md-transform)]"
                    style={{
                      '--md-left': `${activeLocation.x}%`,
                      '--md-top': `${activeLocation.y}%`,
                      '--md-transform': activeLocation.x < 50 ? 'translate(20px, -50%)' : 'translate(calc(-100% - 20px), -50%)',
                    } as React.CSSProperties}
                    onMouseEnter={() => handleMouseEnter(activeLocation)}
                    onMouseLeave={handleMouseLeave}
                  >
                    <div className="bg-[#050B14]/95 backdrop-blur-xl border border-white/10 rounded-2xl shadow-2xl w-full text-white overflow-hidden">
                      {activeLocation.featuredImage && (
                        <div className="relative w-full h-32 bg-neutral-900">
                          <Image
                            src={activeLocation.featuredImage}
                            alt={activeLocation.name}
                            fill
                            className="object-cover"
                          />
                          <div className="absolute inset-0 bg-gradient-to-t from-[#050B14] to-transparent opacity-90" />
                        </div>
                      )}

                      <div className="p-4">
                        <div className="flex items-center gap-2 mb-1">
                          <MapPin className="w-3.5 h-3.5 text-primary" />
                          <span className="text-xs font-bold text-primary uppercase tracking-wider">
                            {t(`types.${activeLocation.type === 'minor_node' ? 'project' : activeLocation.type}`)}
                          </span>
                        </div>
                        <div className="font-heading font-bold text-lg leading-tight mb-2">
                          {activeLocation.name}
                        </div>
                        {activeLocation.type !== 'minor_node' ? (
                          <div className="text-white/60 text-sm line-clamp-3 mb-3">
                            {activeLocation.description}
                          </div>
                        ) : (
                          <div className="text-white/60 text-xs mb-3">
                            {t(`descriptions.${['wind','pv','fiber','power','battery'].includes(activeLocation.description || '') ? activeLocation.description : 'default'}`)}
                          </div>
                        )}
                        
                        {(activeLocation.details || activeLocation.type === 'minor_node') && (
                          <ul className="mb-3 space-y-1.5 border-t border-white/10 pt-3">
                            {activeLocation.type === 'minor_node' ? (
                              <>
                                <li className="text-[11px] text-white/80 flex items-start gap-2 font-medium">
                                  <CheckCircle2 className="w-3 h-3 text-primary shrink-0 mt-0.5" />
                                  <span>{t(`features.${['wind','pv','fiber','power','battery'].includes(activeLocation.description || '') ? activeLocation.description : 'default'}`)}</span>
                                </li>
                                <li className="text-[11px] text-white/80 flex items-start gap-2 font-medium">
                                  <CheckCircle2 className="w-3 h-3 text-primary shrink-0 mt-0.5" />
                                  <span>{t('features.method')}</span>
                                </li>
                              </>
                            ) : (
                              activeLocation.details?.map((detail, i) => (
                                <li key={i} className="text-[11px] text-white/80 flex items-start gap-2 font-medium">
                                  <CheckCircle2 className="w-3 h-3 text-primary shrink-0 mt-0.5" />
                                  <span>{detail}</span>
                                </li>
                              ))
                            )}
                          </ul>
                        )}

                        {activeLocation.href && (activeLocation.type === 'hq' || activeLocation.type === 'branch') && (
                          <Link 
                            href={activeLocation.href.startsWith('/') ? `/${locale}${activeLocation.href}` : activeLocation.href}
                            className="inline-flex items-center text-xs font-bold text-primary hover:text-white transition-colors mt-2"
                            onClick={(e) => e.stopPropagation()}
                          >
                            {t('learnMore')}
                            <ArrowUpRight className="w-3.5 h-3.5 ml-1" />
                          </Link>
                        )}
                      </div>
                    </div>
                  </m.div>
                )}
              </AnimatePresence>
            </div>
          </div>
        </div>
      </div>
    </div>
  );
}