'use client';

import * as React from 'react';
import { m, LazyMotion, domAnimation } from 'framer-motion';
import Link from 'next/link';
import Image from 'next/image';
import { HoverShineOverlay } from '@/components/ui/HoverShineOverlay';
import { useTranslations, useLocale } from 'next-intl';

export interface Reference {
  id: string;
  title: string;
  slug: string;
  category: string;
  image?: {
    url: string;
    alt?: string;
  } | string | null;
}

interface ReferencesSliderProps {
  references?: Reference[];
  badge?: string;
  title?: string;
  description?: string;
  ctaLabel?: string;
  ctaHref?: string;
  data?: {
    badge?: string;
    title?: string;
    description?: string;
    ctaLabel?: string;
    ctaHref?: string;
  }
}

export function ReferencesSlider(props: ReferencesSliderProps) {
  const t = useTranslations('ReferencesSlider');
  const locale = useLocale();

  const { data } = props;
  const references = props.references || [];
  
  const badge = props.badge || data?.badge || t('badge');
  const title = props.title || data?.title || t('title');
  const description = props.description || data?.description || t('description');
  const ctaLabel = props.ctaLabel || data?.ctaLabel || t('ctaLabel');
  const ctaHref = props.ctaHref || data?.ctaHref || `/${locale}/referenzen`;

  if (!references || references.length === 0) return null;

  // Fallback images pool if CMS doesn't provide one
  const fallbacks = [
    '/assets/photos/DSC01123.JPG',
    '/assets/photos/DSC00850.JPG',
    '/assets/photos/DSC01129.JPG',
    '/assets/photos/DSC00010.JPG',
  ];

  return (
    <section id="referenzen" className="pt-16 pb-8 md:py-24 lg:py-32 bg-neutral-dark text-white relative overflow-hidden">
      <div className="absolute inset-0 bg-gradient-to-b from-neutral-dark via-neutral-900 to-neutral-dark z-0" />
      
      <div className="container relative z-10 mb-12 flex flex-col md:flex-row justify-between items-start md:items-end gap-6">
        <div className="text-left">
          <h2 className="text-primary-light font-bold tracking-wider uppercase text-sm mb-3">{badge}</h2>
          <h3 className="font-heading text-3xl md:text-5xl font-extrabold">{title}</h3>
        </div>
        <div className="text-left max-w-3xl mx-auto md:mx-0 md:mb-16">
          {description}
        </div>
      </div>

      <div className="container relative z-10 w-full">
        <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-6 md:gap-8 justify-center items-stretch">
          {references.map((ref, i) => {
            const imgSrc = ref.image 
              ? (typeof ref.image === 'string' ? ref.image : ref.image.url) 
              : fallbacks[i % fallbacks.length];

            return (
              <LazyMotion key={ref.id} features={domAnimation}>
                <m.div
                  initial={{ opacity: 0, y: 20 }}
                  whileInView={{ opacity: 1, y: 0 }}
                  viewport={{ once: true, margin: "-50px" }}
                  transition={{ delay: i * 0.1, duration: 0.8, ease: [0.16, 1, 0.3, 1] }}
                  className="w-full h-full group"
                >
                  <Link
                    href={`/${locale}/referenzen#${ref.slug}`}
                    data-testid="reference-tile"
                    className="block relative h-[250px] md:h-[300px] w-full rounded-2xl overflow-hidden shadow-xl shadow-black/20"
                  >
                    <Image
                      src={imgSrc}
                      alt={ref.title}
                      fill
                      sizes="(max-width: 768px) 100vw, (max-width: 1200px) 50vw, 33vw"
                      className="object-cover object-center group-hover:scale-105 transition-transform duration-700 ease-[cubic-bezier(0.16,1,0.3,1)]"
                      priority={i < 3}
                    />
                    
                    <div className="absolute inset-0 bg-gradient-to-t from-[#050B14]/90 via-[#050B14]/20 to-transparent pointer-events-none" />
                    
                    <HoverShineOverlay />

                    <div className="absolute bottom-0 left-0 p-6 md:p-8 right-0 transform transition-transform duration-500 ease-out group-hover:-translate-y-2">
                      <div className="bg-primary/20 backdrop-blur-md border border-primary/30 text-white text-[10px] md:text-xs font-bold uppercase tracking-wider px-3 py-1 rounded-full mb-3 inline-block shadow-[0_0_15px_rgba(14,122,92,0.3)]">
                        {ref.category}
                      </div>
                      <h4 className="text-xl md:text-2xl font-bold font-heading leading-tight drop-shadow-md text-white group-hover:text-primary-light transition-colors duration-300">
                        {ref.title}
                      </h4>
                    </div>
                  </Link>
                </m.div>
              </LazyMotion>
            );
          })}
        </div>
      </div>

      <div className="container relative z-10 flex justify-center mt-12 md:mt-20 pb-4">
        <Link 
          href={ctaHref} 
          className="px-8 py-4 rounded-xl bg-white/5 border border-white/20 hover:bg-white hover:text-neutral-dark hover:shadow-[0_0_20px_rgba(255,255,255,0.3)] transition-all font-bold flex items-center gap-3 backdrop-blur-sm"
        >
          {ctaLabel}
          <svg xmlns="http://www.w3.org/2000/svg" className="w-5 h-5" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2.5" strokeLinecap="round" strokeLinejoin="round"><line x1="5" y1="12" x2="19" y2="12"></line><polyline points="12 5 19 12 12 19"></polyline></svg>
        </Link>
      </div>
    </section>
  );
}