'use client';

import { motion } from 'framer-motion';
import { ScrollReveal, StaggerReveal } from '@/components/ui/scroll-reveal';
import { CTAButton } from '@/components/ui/cta-button';
import { Factory, ShoppingCart, Heart, GraduationCap, Lightbulb, Settings, Users, TrendingUp, Package, BookOpen, MessageSquare, Calendar, Smartphone, Route, Shield, Truck } from 'lucide-react';import { SectionLabel, EASE_OUT } from '@/components/ui/page-decoration';
import type { Solution } from '@/lib/constants/solutions';
import type { Product } from '@/lib/constants/products';
import { L3EmptyFallback, CaseStudiesSection, CertificationsSection } from '@/components/detail';

const INDUSTRY_ICONS: Record<string, React.ReactNode> = {
  制造业: <Factory className="w-8 h-8" />,
  零售业: <ShoppingCart className="w-8 h-8" />,
  医疗: <Heart className="w-8 h-8" />,
  教育: <GraduationCap className="w-8 h-8" />,
};

const VALUE_ICONS: Record<string, React.ReactNode> = {
  Factory: <Factory className="w-6 h-6" />,
  Package: <Package className="w-6 h-6" />,
  TrendingUp: <TrendingUp className="w-6 h-6" />,
  Users: <Users className="w-6 h-6" />,
  ShoppingCart: <ShoppingCart className="w-6 h-6" />,
  GraduationCap: <GraduationCap className="w-6 h-6" />,
  BookOpen: <BookOpen className="w-6 h-6" />,
  MessageSquare: <MessageSquare className="w-6 h-6" />,
  Heart: <Heart className="w-6 h-6" />,
  Calendar: <Calendar className="w-6 h-6" />,
  Smartphone: <Smartphone className="w-6 h-6" />,
  Route: <Route className="w-6 h-6" />,
  Shield: <Shield className="w-6 h-6" />,
  Truck: <Truck className="w-6 h-6" />,
};

interface DetailHeroProps {
  solution: Solution;
}

function DetailHero({ solution }: DetailHeroProps) {
  const industryIcon = INDUSTRY_ICONS[solution.industry] || <Factory className="w-8 h-8" />;

  return (
    <section className="relative min-h-[80vh] flex items-center overflow-hidden bg-bg-primary pt-24">
      <div className="max-w-container mx-auto px-4 sm:px-6 lg:px-10 relative z-10 w-full py-20 sm:py-24 md:py-28 lg:py-32">
        <motion.div
          initial={{ opacity: 0, y: 30 }}
          animate={{ opacity: 1, y: 0 }}
          transition={{ duration: 0.3, ease: EASE_OUT }}
          className="flex items-center gap-4 mb-8"
        >
          <div className="w-16 h-16 rounded-2xl bg-brand-soft flex items-center justify-center text-brand">
            {industryIcon}
          </div>
          <div>
            <span className="px-3 py-1.5 text-xs font-bold text-brand bg-brand-soft/50">
              {solution.industry}
            </span>
            <div className="text-text-muted text-sm mt-2">{solution.subtitle}</div>
          </div>
        </motion.div>

        <motion.h1
          initial={{ opacity: 0, y: 50 }}
          animate={{ opacity: 1, y: 0 }}
          transition={{ duration: 0.3, delay: 0.15, ease: EASE_OUT }}
          className="text-3xl sm:text-4xl md:text-5xl lg:text-6xl font-bold text-ink leading-tight tracking-tighter mb-6 sm:mb-8 max-w-4xl"
        >
          {solution.title}
        </motion.h1>

        <motion.p
          initial={{ opacity: 0, y: 40 }}
          animate={{ opacity: 1, y: 0 }}
          transition={{ duration: 0.3, delay: 0.3, ease: EASE_OUT }}
          className="text-xl lg:text-2xl text-text-secondary max-w-3xl leading-relaxed mb-12"
        >
          {solution.description}
        </motion.p>

        <motion.div
          initial={{ opacity: 0, y: 40 }}
          animate={{ opacity: 1, y: 0 }}
          transition={{ duration: 0.3, delay: 0.45, ease: EASE_OUT }}
          className="flex flex-wrap gap-6"
        >
          <CTAButton href="/contact" dataTestId="solution-detail-hero-primary">
            获取方案详情
          </CTAButton>
          <CTAButton href="/products" variant="secondary" dataTestId="solution-detail-hero-secondary">
            查看产品
          </CTAButton>
        </motion.div>
      </div>
    </section>
  );
}

interface ChallengesSectionProps {
  challenges: string[];
}

function ChallengesSection({ challenges }: ChallengesSectionProps) {
  return (
    <section className="relative py-20 sm:py-28 md:py-32 lg:py-40 overflow-hidden bg-bg-secondary">
      <div className="absolute top-0 left-0 right-0 h-px bg-border-primary" />
      <div className="absolute bottom-0 left-0 right-0 h-px bg-border-primary" />

      <div className="max-w-container mx-auto px-4 sm:px-6 lg:px-10">
        <div className="grid lg:grid-cols-2 gap-20 items-start">
          <ScrollReveal>
            <SectionLabel>Challenges</SectionLabel>
            <h2 className="text-3xl md:text-4xl lg:text-5xl font-bold text-ink tracking-tight leading-tight mb-8">
              行业痛点
            </h2>
            <p className="text-text-secondary text-lg leading-relaxed">
              我们深入理解行业面临的核心挑战，提供针对性的解决方案
            </p>
          </ScrollReveal>

          <div className="space-y-px bg-border-primary">
            <StaggerReveal staggerDelay={0.05} delayChildren={0.05}>
              {challenges.map((challenge, idx) => (
                <div
                  key={idx}
                  className="group relative p-8 bg-bg-elevated hover:bg-bg-secondary transition-all duration-150"
                >
                  <div className="absolute left-0 top-0 bottom-0 w-1 bg-brand scale-y-0 group-hover:scale-y-100 transition-transform duration-150 origin-top" />
                  <div className="flex items-start gap-6">
                    <div className="w-10 h-10 rounded-xl bg-brand-soft/50 flex items-center justify-center text-brand shrink-0 mt-0.5">
                      <span className="text-lg font-bold">{idx + 1}</span>
                    </div>
                    <p className="text-lg text-ink leading-relaxed">{challenge}</p>
                  </div>
                </div>
              ))}
            </StaggerReveal>
          </div>
        </div>
      </div>
    </section>
  );
}

interface SolutionsSectionProps {
  solutions: string[];
}

function SolutionsSection({ solutions }: SolutionsSectionProps) {
  return (
    <section className="relative py-20 sm:py-28 md:py-32 lg:py-40 overflow-hidden bg-bg-primary">
      <div className="max-w-container mx-auto px-4 sm:px-6 lg:px-10">
        <ScrollReveal className="text-center max-w-3xl mx-auto mb-16 sm:mb-20 md:mb-20">
          <SectionLabel className="justify-center">
            <div className="flex items-center gap-5">
              <div className="w-14 h-px bg-brand" />
              <span className="text-[11px] tracking-[0.4em] uppercase font-bold text-brand">
                Solutions
              </span>
              <div className="w-14 h-px bg-brand" />
            </div>
          </SectionLabel>
          <h2 className="text-2xl sm:text-3xl md:text-4xl lg:text-5xl font-bold text-ink tracking-tight leading-tight">
            解决方案
          </h2>
        </ScrollReveal>

        <div className="grid md:grid-cols-2 gap-px bg-border-primary">
          <StaggerReveal staggerDelay={0.05} delayChildren={0.05}>
            {solutions.map((solution, idx) => (
              <div
                key={idx}
                className="group relative p-10 bg-bg-elevated hover:bg-bg-secondary transition-all duration-150"
              >
                <div className="absolute top-0 left-0 right-0 h-1 bg-brand scale-x-0 group-hover:scale-x-100 transition-transform duration-150 origin-left" />

                <div className="flex items-start gap-6">
                  <div className="w-14 h-14 rounded-2xl bg-brand-soft flex items-center justify-center text-brand shrink-0">
                    <Lightbulb className="w-7 h-7" />
                  </div>
                  <div>
                    <div className="text-xs font-bold text-brand mb-3 tracking-widest uppercase">
                      方案 {idx + 1}
                    </div>
                    <p className="text-xl text-ink font-semibold leading-relaxed">{solution}</p>
                  </div>
                </div>
              </div>
            ))}
          </StaggerReveal>
        </div>
      </div>
    </section>
  );
}

interface ValuePropositionProps {
  valueProposition: Solution['valueProposition'];
}

function ValuePropositionSection({ valueProposition }: ValuePropositionProps) {
  return (
    <section className="relative py-20 sm:py-28 md:py-32 lg:py-40 overflow-hidden bg-bg-secondary">
      <div className="absolute top-0 left-0 right-0 h-px bg-border-primary" />
      <div className="absolute bottom-0 left-0 right-0 h-px bg-border-primary" />

      <div className="max-w-container mx-auto px-4 sm:px-6 lg:px-10">
        <ScrollReveal className="text-center max-w-3xl mx-auto mb-16 sm:mb-20 md:mb-20">
          <SectionLabel className="justify-center">
            <div className="flex items-center gap-5">
              <div className="w-14 h-px bg-brand" />
              <span className="text-[11px] tracking-[0.4em] uppercase font-bold text-brand">
                Value Proposition
              </span>
              <div className="w-14 h-px bg-brand" />
            </div>
          </SectionLabel>
          <h2 className="text-2xl sm:text-3xl md:text-4xl lg:text-5xl font-bold text-ink tracking-tight leading-tight">
            {valueProposition.headline}
          </h2>
        </ScrollReveal>

        <div className="grid md:grid-cols-3 gap-px bg-border-primary">
          <StaggerReveal staggerDelay={0.05} delayChildren={0.05}>
            {valueProposition.points.map((point, idx) => {
              const icon = VALUE_ICONS[point.icon] || <Settings className="w-6 h-6" />;
              return (
                <div
                  key={idx}
                  className="group relative p-10 text-center bg-bg-elevated hover:bg-bg-secondary transition-all duration-150"
                >
                  <div className="absolute top-0 left-1/2 -translate-x-1/2 w-1/3 h-1 bg-brand scale-x-0 group-hover:scale-x-100 transition-transform duration-150 origin-center" />

                  <div className="w-20 h-20 rounded-3xl bg-brand-soft flex items-center justify-center text-brand mx-auto mb-8">
                    {icon}
                  </div>

                  <h3 className="text-2xl font-bold text-ink mb-4">{point.title}</h3>
                  <p className="text-text-secondary leading-relaxed">{point.description}</p>
                </div>
              );
            })}
          </StaggerReveal>
        </div>
      </div>
    </section>
  );
}

interface SuiteCombinationProps {
  suiteCombination: Solution['suiteCombination'];
  products: Product[];
}

function SuiteCombinationSection({ suiteCombination, products }: SuiteCombinationProps) {
  const primaryProducts = suiteCombination.primaryProducts
    .map(pid => products.find(p => p.id === pid))
    .filter(Boolean);

  return (
    <section className="relative py-20 sm:py-28 md:py-32 lg:py-40 overflow-hidden bg-bg-primary">
      <div className="max-w-container mx-auto px-4 sm:px-6 lg:px-10">
        <ScrollReveal className="text-center max-w-3xl mx-auto mb-16 sm:mb-20 md:mb-20">
          <SectionLabel className="justify-center">
            <div className="flex items-center gap-5">
              <div className="w-14 h-px bg-brand" />
              <span className="text-[11px] tracking-[0.4em] uppercase font-bold text-brand">
                Suite Combination
              </span>
              <div className="w-14 h-px bg-brand" />
            </div>
          </SectionLabel>
          <h2 className="text-2xl sm:text-3xl md:text-4xl lg:text-5xl font-bold text-ink tracking-tight leading-tight">
            推荐产品组合
          </h2>
        </ScrollReveal>

        <div className="grid lg:grid-cols-5 gap-px bg-border-primary mb-px">
          <StaggerReveal staggerDelay={0.05} delayChildren={0.05}>
            {primaryProducts.map((product) => product && (
              <div
                key={product.id}
                className="group relative p-8 bg-bg-elevated hover:bg-bg-secondary transition-all duration-150 text-center lg:col-span-2"
              >
                <div className="absolute top-0 left-0 right-0 h-1 bg-brand scale-x-0 group-hover:scale-x-100 transition-transform duration-150 origin-left" />

                <div className="w-16 h-16 rounded-2xl bg-brand-soft flex items-center justify-center text-brand mx-auto mb-6">
                  <Package className="w-8 h-8" />
                </div>

                <div className="text-xs font-bold text-brand mb-2 tracking-widest uppercase">
                  核心产品
                </div>
                <h3 className="text-xl font-bold text-ink mb-3">{product.title}</h3>
                <p className="text-sm text-text-muted leading-relaxed">{product.description}</p>
              </div>
            ))}
          </StaggerReveal>

          <ScrollReveal delay={0.2} className="flex items-center justify-center lg:col-span-1 bg-bg-elevated">
            <div className="w-20 h-20 rounded-full bg-brand-soft/30 border-2 border-brand/30 flex items-center justify-center text-brand font-bold text-xl">
              +
            </div>
          </ScrollReveal>

          <ScrollReveal delay={0.3} className="lg:col-span-2">
            <div className="group relative p-8 bg-brand-soft/10 hover:bg-bg-secondary transition-all duration-150 text-center h-full flex flex-col justify-center">
              <div className="w-16 h-16 rounded-2xl bg-brand-soft flex items-center justify-center text-brand mx-auto mb-6">
                <Users className="w-8 h-8" />
              </div>

              <div className="text-xs font-bold text-brand mb-2 tracking-widest uppercase">
                配套服务
              </div>
              <h3 className="text-xl font-bold text-ink mb-3">专业实施服务</h3>
              <p className="text-sm text-text-secondary leading-relaxed">
                {suiteCombination.complementaryServices.length}项服务配套，确保方案落地见效
              </p>
            </div>
          </ScrollReveal>
        </div>

        <ScrollReveal>
          <div className="p-10 bg-bg-secondary text-center border border-border-primary">
            <div className="text-[11px] tracking-[0.4em] uppercase font-bold text-brand mb-4">
              方案价值
            </div>
            <p className="text-xl lg:text-2xl text-ink leading-relaxed max-w-4xl mx-auto font-medium">
              {suiteCombination.rationale}
            </p>
          </div>
        </ScrollReveal>
      </div>
    </section>
  );
}

interface CTASectionProps {
  solution: Solution;
}

// ===== L3 信任层：客户案例 / 资质认证已合并至共享组件（@/components/detail）=====
// 原本地 CaseStudiesSection / CertificationsSection 与 product 页逐字重复 ~95%，
// B-2（commit 见 git log）统一为共享组件；heading 由 prop 传入以保留原文案。

function CTASection({ solution }: CTASectionProps) {
  return (
    <section className="relative py-36 lg:py-44 overflow-hidden bg-bg-secondary">
      <div className="absolute top-0 left-0 right-0 h-px bg-border-primary" />
      <div className="absolute bottom-0 left-0 right-0 h-px bg-border-primary" />

      <div className="max-w-container mx-auto px-6 lg:px-10 relative z-10">
        <ScrollReveal className="text-center max-w-3xl mx-auto">
          <div className="flex justify-center mb-7">
            <div className="flex items-center gap-5">
              <div className="w-14 h-px bg-brand" />
              <span className="text-[11px] tracking-[0.4em] uppercase font-bold text-brand">
                Get Started
              </span>
              <div className="w-14 h-px bg-brand" />
            </div>
          </div>

          <h2 className="text-4xl md:text-5xl lg:text-6xl font-bold text-ink tracking-tight leading-tight mb-8">
            开启您的<br />
            <span className="text-brand">数字化转型之旅</span>
          </h2>

          <p className="text-xl text-text-secondary mb-12 max-w-2xl mx-auto leading-relaxed">
            联系我们，获取{solution.title}的详细方案和专属报价
          </p>

          <div className="flex flex-wrap justify-center gap-6">
            <CTAButton href="/contact" dataTestId="solution-detail-bottom-primary">
              预约咨询
            </CTAButton>
            <CTAButton href="/solutions" variant="secondary" dataTestId="solution-detail-bottom-secondary">
              查看更多方案
            </CTAButton>
          </div>
        </ScrollReveal>
      </div>
    </section>
  );
}

interface SolutionDetailContentV3Props {
  solution: Solution;
  products?: Product[];
}

export default function SolutionDetailContentV3({ solution, products = [] }: SolutionDetailContentV3Props) {
  return (
    <main>
      <DetailHero solution={solution} />
      <ChallengesSection challenges={solution.challenges} />
      <SolutionsSection solutions={solution.solutions} />
      <ValuePropositionSection valueProposition={solution.valueProposition} />
      <SuiteCombinationSection suiteCombination={solution.suiteCombination} products={products} />
      <L3EmptyFallback caseStudies={solution.caseStudies} certifications={solution.certifications} />
      <CaseStudiesSection caseStudies={solution.caseStudies} heading="同行业落地案例" />
      <CertificationsSection certifications={solution.certifications} />
      <CTASection solution={solution} />
    </main>
  );
}