'use client';

import { motion } from 'framer-motion';
import { useInView } from 'framer-motion';
import { useRef, useMemo } from 'react';
import Link from 'next/link';
import { Card, CardContent, CardHeader, CardTitle, CardDescription } from '@/components/ui/card';
import { ArrowRight, Calendar } from 'lucide-react';
import { useNews } from '@/hooks/use-news';

interface NewsConfig {
  enabled?: boolean;
  displayCount?: number;
  categories?: string[];
  sortOrder?: 'asc' | 'desc';
}

interface NewsSectionProps {
  config?: NewsConfig;
}

export function NewsSection({ config }: NewsSectionProps) {
  const ref = useRef(null);
  const isInView = useInView(ref, { once: true, margin: '-100px' });
  const { news, loading, error } = useNews();
  
  const displayedNews = useMemo(() => {
    if (!news || news.length === 0) {
      return [];
    }
    
    let filtered = news;
    
    if (config?.categories && config.categories.length > 0) {
      filtered = filtered.filter(newsItem => config.categories?.includes(newsItem.category));
    }
    
    if (config?.sortOrder === 'asc') {
      filtered = [...filtered].sort((a, b) => new Date(a.date).getTime() - new Date(b.date).getTime());
    } else {
      filtered = [...filtered].sort((a, b) => new Date(b.date).getTime() - new Date(a.date).getTime());
    }
    
    const count = config?.displayCount || 4;
    return filtered.slice(0, count);
  }, [news, config]);

  if (loading) {
    return (
      <section id="news" role="region" aria-labelledby="news-heading" className="py-24 bg-[#F5F5F5]" ref={ref}>
        <div className="container-custom">
          <div className="text-center">
            <p className="text-lg text-[#5C5C5C]">加载中...</p>
          </div>
        </div>
      </section>
    );
  }

  if (error) {
    return (
      <section id="news" role="region" aria-labelledby="news-heading" className="py-24 bg-[#F5F5F5]" ref={ref}>
        <div className="container-custom">
          <div className="text-center">
            <p className="text-lg text-red-600">加载新闻信息失败，请稍后重试</p>
          </div>
        </div>
      </section>
    );
  }

  return (
    <section id="news" role="region" aria-labelledby="news-heading" className="py-24 bg-[#F5F5F5]" ref={ref}>
      <div className="container-custom">
        <motion.div 
          initial={{ opacity: 0, y: 20 }}
          animate={isInView ? { opacity: 1, y: 0 } : {}}
          transition={{ duration: 0.5 }}
          className="text-center max-w-3xl mx-auto mb-16"
        >
          <h2 id="news-heading" className="text-3xl sm:text-4xl lg:text-5xl font-bold text-[#1C1C1C] mb-6">
            最新<span className="text-[#C41E3A]">资讯</span>
          </h2>
          <p className="text-lg text-[#5C5C5C]">
            了解公司最新动态、行业资讯和技术分享
          </p>
        </motion.div>

        {displayedNews.length > 0 ? (
          <div className="grid grid-cols-1 md:grid-cols-2 gap-8 max-w-5xl mx-auto">
            {displayedNews.map((newsItem, idx) => (
              <motion.div
                key={newsItem.id}
                initial={{ opacity: 0, y: 20 }}
                animate={isInView ? { opacity: 1, y: 0 } : {}}
                transition={{ duration: 0.4, delay: idx * 0.08 }}
              >
                <Card className="h-full flex flex-col group cursor-pointer border-[#E5E5E5] hover:border-[#1C1C1C]">
                  <CardHeader>
                    <div className="flex items-center gap-2 mb-3">
                      <span className="inline-block px-2 py-0.5 rounded-full bg-[#F5F5F5] text-[#1C1C1C] text-xs font-medium">
                        {newsItem.category}
                      </span>
                      <span className="text-sm text-[#5C5C5C] flex items-center gap-1">
                        <Calendar className="w-3 h-3" />
                        {newsItem.date}
                      </span>
                    </div>
                    <CardTitle className="text-xl leading-tight">{newsItem.title}</CardTitle>
                  </CardHeader>
                  <CardContent className="flex-1 flex flex-col">
                    <CardDescription className="text-base leading-relaxed mb-6 flex-1">
                      {newsItem.excerpt}
                    </CardDescription>
                    <a
                      href={`/news/${newsItem.id}`}
                      className="inline-flex items-center text-sm font-medium text-[#1C1C1C] hover:text-[#C41E3A] transition-colors group/link"
                    >
                      阅读更多
                      <ArrowRight className="ml-1 w-4 h-4 transition-transform group-hover/link:translate-x-1" />
                    </a>
                  </CardContent>
                </Card>
              </motion.div>
            ))}
          </div>
        ) : (
          <div className="text-center py-12">
            <p className="text-lg text-[#5C5C5C]">暂无新闻信息</p>
          </div>
        )}

        <motion.div 
          initial={{ opacity: 0, y: 20 }}
          animate={isInView ? { opacity: 1, y: 0 } : {}}
          transition={{ duration: 0.6, delay: 0.5 }}
          className="mt-12 text-center"
        >
          <Link 
            href="/news"
            className="inline-flex items-center text-sm font-medium text-[#1C1C1C] hover:text-[#C41E3A] transition-colors bg-transparent border-none cursor-pointer group"
          >
            查看全部新闻
            <ArrowRight className="ml-1 w-4 h-4 transition-transform group-hover:translate-x-1" />
          </Link>
        </motion.div>
      </div>
    </section>
  );
}