'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 { Button } from '@/components/ui/button';
import { Badge } from '@/components/ui/badge';
import { ArrowRight, Check, TrendingUp } from 'lucide-react';
import { useProducts } from '@/hooks/use-products';
import { trackButtonClick } from '@/lib/analytics';

interface ProductsConfig {
  enabled?: boolean;
  showPricing?: boolean;
  featuredProducts?: string[];
}

interface ProductsSectionProps {
  config?: ProductsConfig;
}

export function ProductsSection({ config }: ProductsSectionProps) {
  const ref = useRef(null);
  const isInView = useInView(ref, { once: true, margin: '-100px' });
  const { products, loading, error } = useProducts();

  const filteredProducts = useMemo(() => {
    if (!products || products.length === 0) {
      return [];
    }
    if (!config?.featuredProducts || config.featuredProducts.length === 0) {
      return products;
    }
    return products.filter(product => config.featuredProducts?.includes(product.id));
  }, [products, config]);

  if (loading) {
    return (
      <section id="products" role="region" aria-labelledby="products-heading" className="py-24 bg-[#F5F7FA] relative overflow-hidden">
        <div className="container-wide relative z-10">
          <div className="text-center">
            <p className="text-lg text-[#5C5C5C]">加载中...</p>
          </div>
        </div>
      </section>
    );
  }

  if (error) {
    return (
      <section id="products" role="region" aria-labelledby="products-heading" className="py-24 bg-[#F5F7FA] relative overflow-hidden">
        <div className="container-wide relative z-10">
          <div className="text-center">
            <p className="text-lg text-red-600">加载产品信息失败，请稍后重试</p>
          </div>
        </div>
      </section>
    );
  }

  return (
    <section id="products" role="region" aria-labelledby="products-heading" className="py-24 bg-[#F5F7FA] relative overflow-hidden" ref={ref}>
      <div className="absolute top-1/2 left-0 w-100 h-100 bg-[rgba(79,70,229,0.03)] rounded-full blur-3xl" />
      <div className="absolute top-1/3 right-0 w-75 h-75 bg-[rgba(196,30,58,0.02)] rounded-full blur-3xl" />
      <div className="container-wide relative z-10">
        <motion.div 
          initial={{ opacity: 0, y: 20 }}
          animate={isInView ? { opacity: 1, y: 0 } : {}}
          transition={{ duration: 0.6 }}
          className="text-center max-w-3xl mx-auto mb-16"
        >
          <h2 id="products-heading" className="text-4xl md:text-5xl font-bold text-[#1C1C1C] mb-6">
            我们的<span className="text-[#C41E3A]">产品</span>
          </h2>
          <p className="text-lg text-[#5C5C5C]">
            自主研发的企业级产品，助力企业高效运营，实现数字化转型
          </p>
        </motion.div>

        {filteredProducts.length > 0 ? (
          <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-8">
            {filteredProducts.map((product, idx) => (
              <motion.div
                key={product.id}
                initial={{ opacity: 0, y: 20 }}
                animate={isInView ? { opacity: 1, y: 0 } : {}}
                transition={{ duration: 0.5, delay: 0.1 + idx * 0.1 }}
              >
                <Link href={`/products/${product.id}`} onClick={() => trackButtonClick(product.title, 'products_section')}>
                  <Card className="h-full flex flex-col group cursor-pointer border-[#E5E5E5] hover:border-[#1C1C1C] transition-colors">
                    <CardHeader>
                      <Badge variant="secondary" className="w-fit mb-3">
                        {product.category}
                      </Badge>
                      <CardTitle>{product.title}</CardTitle>
                    </CardHeader>
                    <CardContent className="flex-1 flex flex-col">
                      <CardDescription className="text-base leading-relaxed mb-4 flex-1">
                        {product.description}
                      </CardDescription>
                      
                      <div className="mb-4">
                        <p className="text-sm font-medium text-[#1C1C1C] mb-2">核心功能</p>
                        <div className="flex flex-wrap gap-1.5">
                          {product.features.slice(0, 4).map((feature, idx) => (
                            <span 
                              key={idx} 
                              className="inline-flex items-center text-xs px-2 py-1 bg-[#FAFAFA] text-[#3D3D3D] rounded border border-[#E5E5E5]"
                            >
                              <Check className="w-3 h-3 mr-1 text-[#C41E3A]" />
                              {feature}
                            </span>
                          ))}
                        </div>
                      </div>

                      <div className="mb-4">
                        <p className="text-sm font-medium text-[#1C1C1C] mb-2 flex items-center">
                          <TrendingUp className="w-4 h-4 mr-1 text-[#C41E3A]" />
                          核心价值
                        </p>
                        <ul className="space-y-1">
                          {product.benefits.map((benefit, idx) => (
                            <li key={idx} className="text-xs text-[#5C5C5C] flex items-start">
                              <span className="text-[#C41E3A] mr-1.5">•</span>
                              {benefit}
                            </li>
                          ))}
                        </ul>
                      </div>

                      {config?.showPricing && product.pricing && (
                        <div className="mb-4 p-3 bg-[#F5F7FA] rounded-lg">
                          <p className="text-sm font-medium text-[#1C1C1C] mb-2">价格方案</p>
                          <div className="space-y-1">
                            {Object.entries(product.pricing).map(([key, value]) => (
                              <p key={key} className="text-xs text-[#5C5C5C]">
                                {value}
                              </p>
                            ))}
                          </div>
                        </div>
                      )}

                      <Button variant="outline" className="w-full mt-auto group-hover:bg-[#A01830] group-hover:text-white group-hover:border-[#A01830] transition-colors">
                        了解详情
                        <ArrowRight className="ml-2 w-4 h-4" />
                      </Button>
                    </CardContent>
                  </Card>
                </Link>
              </motion.div>
            ))}
          </div>
        ) : (
          <div className="text-center py-12">
            <p className="text-lg text-[#5C5C5C]">暂无产品信息</p>
          </div>
        )}

        <motion.div 
          initial={{ opacity: 0, y: 20 }}
          animate={isInView ? { opacity: 1, y: 0 } : {}}
          transition={{ duration: 0.6, delay: 0.5 }}
          className="mt-20 text-center"
        >
          <div className="bg-white rounded-2xl p-12 border border-[#E2E8F0] relative overflow-hidden">
            <div className="absolute inset-0 pointer-events-none">
              <div className="absolute top-0 right-0 w-64 h-64 bg-[rgba(79,70,229,0.03)] rounded-full blur-3xl" />
              <div className="absolute bottom-0 left-0 w-48 h-48 bg-[rgba(196,30,58,0.02)] rounded-full blur-3xl" />
            </div>
            <div className="relative z-10">
              <h3 className="text-2xl sm:text-3xl font-bold text-[#1A1A2E] mb-4">
                需要定制化解决方案？
              </h3>
              <p className="text-[#718096] mb-8 max-w-2xl mx-auto">
                我们的专业团队可以根据您的业务需求，提供量身定制的产品开发和系统集成服务
              </p>
              <Button 
                size="lg"
                asChild
              >
                <Link href="/contact">
                  联系我们
                  <ArrowRight className="ml-2 w-4 h-4" />
                </Link>
              </Button>
            </div>
          </div>
        </motion.div>
      </div>
    </section>
  );
}