'use client';

import { useRef } from 'react';
import { useRouter } from 'next/navigation';
import { Button } from '@/components/ui/button';
import { Badge } from '@/components/ui/badge';
import { 
  ArrowLeft, 
  CheckCircle2, 
  TrendingUp, 
  Users, 
  Target, 
  Clock, 
  MessageCircle,
  ArrowRight
} from 'lucide-react';
import { SERVICES, CASES } from '@/lib/constants';

interface ServiceDetailClientProps {
  service: typeof SERVICES[number];
}

const iconMap: Record<string, React.ComponentType<{ className?: string }>> = {
  Code: () => (
    <svg className="w-6 h-6" fill="none" stroke="currentColor" viewBox="0 0 24 24">
      <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M10 20l4-16m4 4l4 4-4 4M6 16l-4-4 4-4" />
    </svg>
  ),
  Cloud: () => (
    <svg className="w-6 h-6" fill="none" stroke="currentColor" viewBox="0 0 24 24">
      <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M3 15a4 4 0 004 4h9a5 5 0 10-.1-9.999 5.002 5.002 0 10-9.78 2.096A4.001 4.001 0 003 15z" />
    </svg>
  ),
  BarChart3: () => (
    <svg className="w-6 h-6" fill="none" stroke="currentColor" viewBox="0 0 24 24">
      <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M9 19v-6a2 2 0 00-2-2H5a2 2 0 00-2 2v6a2 2 0 002 2h2a2 2 0 002-2zm0 0V9a2 2 0 012-2h2a2 2 0 012 2v10m-6 0a2 2 0 002 2h2a2 2 0 002-2m0 0V5a2 2 0 012-2h2a2 2 0 012 2v14a2 2 0 01-2 2h-2a2 2 0 01-2-2z" />
    </svg>
  ),
  Shield: () => (
    <svg className="w-6 h-6" fill="none" stroke="currentColor" viewBox="0 0 24 24">
      <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M9 12l2 2 4-4m5.618-4.016A11.955 11.955 0 0112 2.944a11.955 11.955 0 01-8.618 3.04A12.02 12.02 0 003 9c0 5.591 3.824 10.29 9 11.622 5.176-1.332 9-6.03 9-11.622 0-1.042-.133-2.052-.382-3.016z" />
    </svg>
  ),
};

const challenges = {
  software: [
    { title: '需求不明确', description: '业务部门提不出清晰需求，开发团队反复返工' },
    { title: '技术选型困难', description: '技术栈更新快，不知道该选什么技术方案' },
    { title: '项目延期', description: '开发进度难以把控，上线时间一拖再拖' },
    { title: '维护成本高', description: '系统上线后问题不断，运维压力巨大' },
  ],
  cloud: [
    { title: '资源浪费', description: '服务器资源利用率低，成本居高不下' },
    { title: '扩展困难', description: '业务增长时系统无法快速扩容' },
    { title: '迁移风险', description: '担心数据丢失、业务中断' },
    { title: '安全顾虑', description: '不确定云端数据是否安全' },
  ],
  data: [
    { title: '数据孤岛', description: '各系统数据分散，无法整合分析' },
    { title: '决策盲区', description: '缺乏数据支撑，决策凭感觉' },
    { title: '报表滞后', description: '手工制作报表，时效性差' },
    { title: '价值难挖', description: '数据很多，但不知道怎么用' },
  ],
  security: [
    { title: '安全漏洞', description: '系统存在未知漏洞，随时可能被攻击' },
    { title: '合规压力', description: '监管要求越来越严，不知如何应对' },
    { title: '内部威胁', description: '员工操作不规范，数据泄露风险' },
    { title: '应急能力弱', description: '安全事件发生后不知所措' },
  ],
};

const outcomes = {
  software: [
    { value: '30%', label: '开发效率提升' },
    { value: '50%', label: '返工率降低' },
    { value: '100%', label: '按时交付率' },
  ],
  cloud: [
    { value: '40%', label: '成本降低' },
    { value: '99.9%', label: '可用性保障' },
    { value: '10x', label: '弹性扩展能力' },
  ],
  data: [
    { value: '70%', label: '决策效率提升' },
    { value: '实时', label: '数据更新' },
    { value: '100+', label: '可视化报表' },
  ],
  security: [
    { value: '99%', label: '漏洞修复率' },
    { value: '100%', label: '合规达标' },
    { value: '24/7', label: '安全监控' },
  ],
};

export function ServiceDetailClient({ service }: ServiceDetailClientProps) {
  const router = useRouter();
  const contentRef = useRef<HTMLDivElement>(null);

  const serviceChallenges = challenges[service.id as keyof typeof challenges] ?? [];
  const serviceOutcomes = outcomes[service.id as keyof typeof outcomes] ?? [];
  const relatedCases = CASES.slice(0, 2);

  const Icon = iconMap[service.icon];

  return (
    <main className="min-h-screen bg-white">
      <div className="relative overflow-hidden bg-gradient-to-b from-[#FAFAFA] to-white">
        <div className="container-wide relative z-10 pt-32 pb-20">
          <Button 
            variant="ghost" 
            className="text-[#5C5C5C] hover:text-[#C41E3A] hover:bg-[#C41E3A]/10"
            onClick={() => router.back()}
          >
            <ArrowLeft className="w-4 h-4 mr-2" />
            返回
          </Button>
          <div className="max-w-4xl mt-8">
            <div className="flex items-center gap-4 mb-6">
              <div className="w-16 h-16 bg-[#C41E3A] rounded-2xl flex items-center justify-center text-white">
                {Icon && <Icon />}
              </div>
              <div>
                <Badge className="mb-2 bg-[#C41E3A]/10 text-[#C41E3A] hover:bg-[#C41E3A]/20">
                  核心业务
                </Badge>
                <h1 className="text-3xl sm:text-4xl lg:text-5xl font-semibold text-[#1C1C1C]">
                  {service.title}
                </h1>
              </div>
            </div>
            <p className="text-lg text-[#5C5C5C] leading-relaxed">
              {service.description}
            </p>
          </div>
        </div>
      </div>

      <div ref={contentRef} className="container-wide py-12 md:py-16">
        <div className="max-w-4xl mx-auto space-y-16">
          
          <section className="bg-gradient-to-br from-[#FFFBF5] to-white rounded-2xl p-8 border border-[#C41E3A]/20">
            <div className="flex items-center gap-3 mb-6">
              <div className="w-12 h-12 bg-[#C41E3A] rounded-xl flex items-center justify-center">
                <MessageCircle className="w-6 h-6 text-white" />
              </div>
              <h2 className="text-2xl font-semibold text-[#1C1C1C]">
                您可能面临的挑战
              </h2>
            </div>
            <div className="grid md:grid-cols-2 gap-4">
              {serviceChallenges.map((challenge, index) => (
                <div 
                  key={index}
                  className="p-4 bg-white rounded-lg border border-[#E5E5E5] hover:border-[#C41E3A] transition-colors"
                >
                  <h3 className="font-semibold text-[#1C1C1C] mb-2">{challenge.title}</h3>
                  <p className="text-sm text-[#5C5C5C]">{challenge.description}</p>
                </div>
              ))}
            </div>
          </section>

          <section className="bg-gradient-to-br from-[#F5F7FA] to-white rounded-2xl p-8 border border-[#E5E5E5]">
            <div className="flex items-center gap-3 mb-6">
              <div className="w-12 h-12 bg-[#C41E3A] rounded-xl flex items-center justify-center">
                <Target className="w-6 h-6 text-white" />
              </div>
              <h2 className="text-2xl font-semibold text-[#1C1C1C]">
                我们如何帮助您
              </h2>
            </div>
            <p className="text-lg text-[#5C5C5C] leading-relaxed mb-6">
              {service.overview}
            </p>
            <div className="space-y-3">
              {service.features.map((feature, index) => (
                <div key={index} className="flex items-start gap-3">
                  <CheckCircle2 className="w-5 h-5 text-[#C41E3A] mt-0.5 flex-shrink-0" />
                  <span className="text-[#1C1C1C]">{feature}</span>
                </div>
              ))}
            </div>
          </section>

          <section className="bg-gradient-to-br from-[#FFFBF5] to-white rounded-2xl p-8 border border-[#C41E3A]/20">
            <div className="flex items-center gap-3 mb-6">
              <div className="w-12 h-12 bg-[#C41E3A] rounded-xl flex items-center justify-center">
                <Clock className="w-6 h-6 text-white" />
              </div>
              <h2 className="text-2xl font-semibold text-[#1C1C1C]">
                服务流程
              </h2>
            </div>
            <div className="space-y-4">
              {service.process.map((step, index) => (
                <div key={index} className="flex items-start gap-4">
                  <div className="w-10 h-10 bg-[#C41E3A] rounded-full flex items-center justify-center flex-shrink-0 text-white font-semibold">
                    {index + 1}
                  </div>
                  <div className="flex-1 pb-4">
                    <p className="text-[#1C1C1C] font-medium">{step}</p>
                  </div>
                </div>
              ))}
            </div>
          </section>

          <section className="bg-gradient-to-br from-[#F5F7FA] to-white rounded-2xl p-8 border border-[#E5E5E5]">
            <div className="flex items-center gap-3 mb-6">
              <div className="w-12 h-12 bg-[#C41E3A] rounded-xl flex items-center justify-center">
                <TrendingUp className="w-6 h-6 text-white" />
              </div>
              <h2 className="text-2xl font-semibold text-[#1C1C1C]">
                您将获得的改变
              </h2>
            </div>
            <div className="grid sm:grid-cols-3 gap-4">
              {serviceOutcomes.map((outcome, index) => (
                <div 
                  key={index}
                  className="p-6 bg-white rounded-lg border border-[#E5E5E5] hover:border-[#C41E3A] transition-colors text-center"
                >
                  <div className="text-3xl font-bold text-[#C41E3A] mb-2">
                    {outcome.value}
                  </div>
                  <div className="text-sm text-[#5C5C5C]">{outcome.label}</div>
                </div>
              ))}
            </div>
            <div className="mt-6 p-4 bg-white rounded-lg border border-[#E5E5E5]">
              <p className="text-sm text-[#5C5C5C]">
                {service.benefits.map(b => b).join('；')}
              </p>
            </div>
          </section>

          <section className="bg-gradient-to-br from-[#FFFBF5] to-white rounded-2xl p-8 border border-[#C41E3A]/20">
            <div className="flex items-center gap-3 mb-6">
              <div className="w-12 h-12 bg-[#C41E3A] rounded-xl flex items-center justify-center">
                <Users className="w-6 h-6 text-white" />
              </div>
              <h2 className="text-2xl font-semibold text-[#1C1C1C]">
                相关案例
              </h2>
            </div>
            <div className="grid md:grid-cols-2 gap-4">
              {relatedCases.map((caseItem) => (
                <Link
                  key={caseItem.id}
                  href={`/cases/${caseItem.id}`}
                  className="group p-4 bg-white rounded-lg border border-[#E5E5E5] hover:border-[#C41E3A] transition-colors"
                >
                  <Badge variant="secondary" className="mb-2">
                    {caseItem.industry}
                  </Badge>
                  <h3 className="font-semibold text-[#1C1C1C] group-hover:text-[#C41E3A] transition-colors">
                    {caseItem.title}
                  </h3>
                  <p className="text-sm text-[#5C5C5C] mt-2 line-clamp-2">
                    {caseItem.description}
                  </p>
                </Link>
              ))}
            </div>
          </section>

          <div className="flex justify-center gap-4 pt-8 border-t border-[#E5E5E5]">
            <Button variant="outline" size="lg" asChild>
              <Link href="/services">
                查看其他服务
              </Link>
            </Button>
            <Button size="lg" className="bg-[#C41E3A] hover:bg-[#A01830] text-white" asChild>
              <Link href="/contact">
                开始您的转型之旅
                <ArrowRight className="ml-2 w-4 h-4" />
              </Link>
            </Button>
          </div>
        </div>
      </div>
    </main>
  );
}