'use client';

import { motion } from 'framer-motion';
import { ArrowUpRight, CheckCircle2 } from 'lucide-react';
import { StaticLink } from '@/components/ui/static-link';
import { CTAButton } from '@/components/ui/cta-button';
import type { Service } from '@/lib/constants/services';

const EASE_OUT = [0.22, 1, 0.36, 1] as const;

/** Fallback metrics keyed by service ID — used when CMS data does not provide metrics */
const SERVICE_UI_META: Record<string, { metrics: { value: string; label: string }[] }> = {
  consulting: { metrics: [{ value: '10+', label: '人核心团队' }, { value: '6', label: '行业场景' }] },
  software: { metrics: [{ value: '6', label: '款自研产品' }, { value: 'A+', label: '代码质量' }] },
  data: { metrics: [{ value: '99.9%', label: '系统可用性' }, { value: '24/7', label: '运维支持' }] },
  solutions: { metrics: [{ value: '6', label: '行业场景' }, { value: '100%', label: '结果导向交付' }] },
};

function mapServicesToCards(services: Service[]) {
  return services.map((svc) => {
    const uiMeta = SERVICE_UI_META[svc.id];
    return {
      id: svc.id,
      title: svc.title,
      description: svc.description,
      capabilities: svc.capabilities?.slice(0, 4) ?? [],
      metrics: svc.metrics ?? uiMeta?.metrics ?? [],
    };
  });
}

const SERVICE_PROCESS = [
  {
    phase: '需求分析',
    duration: '2-3 周',
    deliverables: ['业务痛点清单', '现状评估报告', '项目范围说明书'],
  },
  {
    phase: '方案设计',
    duration: '4-6 周',
    deliverables: ['系统架构设计', '实施路线图', '投资测算模型'],
  },
  {
    phase: '敏捷交付',
    duration: '3-6 个月',
    deliverables: ['分阶段上线版本', '用户培训材料', '数据迁移方案'],
  },
  {
    phase: '持续支持',
    duration: '长期',
    deliverables: ['运维监控体系', '迭代优化计划', '知识转移文档'],
  },
];

const SERVICE_MODES = [
  {
    title: '项目制',
    description: '针对明确的需求和交付目标，以项目为单位进行合作。适合有清晰边界的一次性建设类项目。',
    highlight: '固定范围 · 固定周期',
  },
  {
    title: '订阅制',
    description: '按月或按年持续提供技术支持和迭代优化。适合需要长期维护、持续演进的产品和系统。',
    highlight: '持续迭代 · 弹性调整',
  },
  {
    title: '长期陪跑',
    description: '以合作伙伴身份深度参与您的数字化进程，从规划到执行全程陪伴。适合正在系统性转型的企业。',
    highlight: '深度参与 · 共同成长',
  },
];

type PageCopy = Record<string, unknown>;

function HeroSection({ pageCopy }: { pageCopy?: PageCopy | null }) {
  const heroTitle1 = (pageCopy?.servicesHeroTitle1 as string) || '从规划到运维';
  const heroTitle2 = (pageCopy?.servicesHeroTitle2 as string) || '全程陪伴';
  const heroDescriptionLines = ((pageCopy?.servicesHeroDescription as string) ||
    '不只是技术供应商，更是您数字化转型的同行者。\n从第一次沟通到系统稳定运行，我们始终在您身边。').split('\n');
  const ctaPrimary = (pageCopy?.servicesCtaPrimary as string) || '聊聊您的需求';
  const ctaSecondary = (pageCopy?.servicesCtaSecondary as string) || '查看产品矩阵';

  return (
    <section className="relative min-h-[85vh] flex items-center overflow-hidden bg-bg-primary">
      <div className="max-w-container mx-auto px-4 sm:px-6 lg:px-10 relative z-10 w-full py-28 sm:py-36 md:py-44 lg:py-56">
        <div className="max-w-4xl">
          <motion.h1
            initial={{ opacity: 0, y: 40 }}
            animate={{ opacity: 1, y: 0 }}
            transition={{ duration: 0.3, delay: 0.2, ease: EASE_OUT }}
            className="text-4xl sm:text-5xl md:text-6xl lg:text-7xl xl:text-8xl font-black text-ink leading-[0.92] tracking-tightest mb-10 sm:mb-12 md:mb-16"
          >
            <div className="block">{heroTitle1}</div>
            <div className="block mt-4 sm:mt-6">
              <span className="relative inline-block">
                <span className="relative text-brand font-black">
                  {heroTitle2}
                  <motion.span
                    className="absolute -bottom-2 left-0 w-full h-[3px] bg-brand"
                    style={{ transformOrigin: 'left' }}
                    initial={{ scaleX: 0 }}
                    animate={{ scaleX: 1 }}
                    transition={{ duration: 0.3, delay: 1.2, ease: EASE_OUT }}
                  />
                </span>
              </span>
            </div>
          </motion.h1>

          <motion.p
            initial={{ opacity: 0, y: 30 }}
            animate={{ opacity: 1, y: 0 }}
            transition={{ duration: 0.3, delay: 0.5, ease: EASE_OUT }}
            className="text-lg md:text-xl text-text-secondary max-w-2xl leading-relaxed mb-12 sm:mb-16"
          >
            {heroDescriptionLines.map((line, i) => (
              <span key={i}>
                {i > 0 && <br className="hidden sm:block" />}
                {line}
              </span>
            ))}
          </motion.p>

          <motion.div
            initial={{ opacity: 0, y: 30 }}
            animate={{ opacity: 1, y: 0 }}
            transition={{ duration: 0.3, delay: 0.7, ease: EASE_OUT }}
            className="flex flex-col sm:flex-row gap-4 sm:gap-6"
          >
            <CTAButton href="/contact" dataTestId="services-hero-primary" className="min-h-[52px]">
              {ctaPrimary}
            </CTAButton>
            <CTAButton href="/products" variant="secondary" dataTestId="services-hero-secondary" className="min-h-[52px]">
              {ctaSecondary}
            </CTAButton>
          </motion.div>

          <motion.div
            initial={{ opacity: 0, y: 30 }}
            animate={{ opacity: 1, y: 0 }}
            transition={{ duration: 0.3, delay: 0.9, ease: EASE_OUT }}
            className="grid grid-cols-3 gap-8 mt-20 pt-12 border-t border-border-primary max-w-xl"
          >
            <div>
              <div className="text-3xl sm:text-4xl font-black text-ink tracking-tight leading-none mb-2">
                4<span className="text-brand">大</span>
              </div>
              <div className="text-sm text-text-muted">服务领域</div>
            </div>
            <div>
              <div className="text-3xl sm:text-4xl font-black text-ink tracking-tight leading-none mb-2">
                3<span className="text-brand">种</span>
              </div>
              <div className="text-sm text-text-muted">合作模式</div>
            </div>
            <div>
              <div className="text-3xl sm:text-4xl font-black text-ink tracking-tight leading-none mb-2">
                全<span className="text-brand">流程</span>
              </div>
              <div className="text-sm text-text-muted">服务保障</div>
            </div>
          </motion.div>
        </div>
      </div>
    </section>
  );
}

function ServicesGridSection({ services, pageCopy }: { services?: Service[]; pageCopy?: PageCopy | null }) {
  const displayServices = services?.length ? mapServicesToCards(services) : [];
  const gridTitle = (pageCopy?.servicesGridTitle as string) || '四大核心服务，覆盖数字化全链路';
  const emptyState = (pageCopy?.servicesEmptyState as string) || '暂无服务数据';
  if (displayServices.length === 0) {
    return (
      <section className="relative py-20 sm:py-28 md: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-4 sm:px-6 lg:px-10 text-center">
          <p className="text-text-muted text-lg">{emptyState}</p>
        </div>
      </section>
    );
  }
  return (
    <section className="relative py-20 sm:py-28 md: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-4 sm:px-6 lg:px-10">
        <motion.div
          initial={{ opacity: 0, y: 30 }}
          whileInView={{ opacity: 1, y: 0 }}
          viewport={{ once: true, margin: '-80px' }}
          transition={{ duration: 0.3, ease: EASE_OUT }}
          className="max-w-3xl mb-16 sm:mb-20 md:mb-24"
        >
          <h2 className="text-3xl sm:text-4xl md:text-5xl lg:text-6xl font-extrabold text-ink tracking-tight leading-[0.95]">
            {gridTitle}
          </h2>
        </motion.div>

        <div className="grid md:grid-cols-2 gap-px bg-border-primary">
          {displayServices.map((service, i) => (
            <motion.div
              key={service.id}
              data-testid={`service-card-${service.id}`}
              data-featured={i === 0 ? 'true' : 'false'}
              className={i === 0 ? 'md:col-span-2 bg-bg-primary' : 'md:col-span-1 bg-bg-primary'}
              initial={{ opacity: 0, y: 30 }}
              whileInView={{ opacity: 1, y: 0 }}
              viewport={{ once: true, margin: '-60px' }}
              transition={{ duration: 0.3, delay: i * 0.08, ease: EASE_OUT }}
            >
              <StaticLink
                href={`/services/${service.id}`}
                className="group relative block p-8 sm:p-10 md:p-12 transition-all duration-300 hover:bg-bg-secondary hover:shadow-lg hover:-translate-y-1 bg-bg-primary border border-transparent hover:border-border-primary after:absolute after:bottom-0 after:left-0 after:h-0.5 after:w-full after:origin-left after:scale-x-0 after:bg-brand after:transition-transform after:duration-300 group-hover:after:scale-x-100"
              >
                <div className="relative z-10">
                  <h3 className="text-xl sm:text-2xl font-bold text-ink group-hover:text-brand transition-colors duration-300 mb-3">
                    {service.title}
                  </h3>

                  <p className="text-text-secondary leading-relaxed mb-6 text-[15px]">
                    {service.description}
                  </p>

                  <ul className="space-y-2 mb-6">
                    {service.capabilities.map((cap) => (
                      <li key={cap} className="flex items-start gap-2 text-sm text-text-secondary">
                        <CheckCircle2 className="w-4 h-4 text-brand shrink-0 mt-0.5" />
                        {cap}
                      </li>
                    ))}
                  </ul>

                  <div className="flex gap-6 pt-5 border-t border-border-primary mb-6">
                    {service.metrics.map((m) => (
                      <div key={m.label}>
                        <div className="text-xl font-bold text-ink">{m.value}</div>
                        <div className="text-xs text-text-muted mt-1">{m.label}</div>
                      </div>
                    ))}
                  </div>

                  <div className="inline-flex items-center gap-2 text-sm font-semibold text-text-secondary group-hover:text-brand transition-colors duration-300">
                    <span>了解详情</span>
                    <ArrowUpRight className="w-4 h-4 group-hover:translate-x-0.5 group-hover:-translate-y-0.5 transition-transform duration-300" />
                  </div>
                </div>
              </StaticLink>
            </motion.div>
          ))}
        </div>
      </div>
    </section>
  );
}

function ProcessModesSection() {
  return (
    <section className="relative py-20 sm:py-28 md:py-36 lg:py-44 overflow-hidden bg-bg-primary">
      <div className="max-w-container mx-auto px-4 sm:px-6 lg:px-10">
        <div className="grid lg:grid-cols-12 gap-12 sm:gap-16 md:gap-20">
          {/* Process */}
          <motion.div
            initial={{ opacity: 0, y: 30 }}
            whileInView={{ opacity: 1, y: 0 }}
            viewport={{ once: true, margin: '-80px' }}
            transition={{ duration: 0.3, ease: EASE_OUT }}
            className="lg:col-span-7"
          >
            <h2 className="text-3xl sm:text-4xl md:text-5xl font-extrabold text-ink tracking-tight leading-[0.95] mb-10 sm:mb-14">
              我们的做事方式
            </h2>

            <div className="relative">
              {SERVICE_PROCESS.map((step) => (
                <div key={step.phase} className="relative pl-8 sm:pl-12 pb-10 sm:pb-12 last:pb-0">
                  <div className="absolute left-0 top-1.5 bottom-0 w-px bg-border-primary last:hidden" />
                  <div className="absolute left-0 top-1.5 w-2.5 h-2.5 rounded-full -translate-x-1/2 bg-brand" />

                  <div className="flex items-center gap-3 mb-3">
                    <h3 className="text-lg sm:text-xl font-bold text-ink">{step.phase}</h3>
                    <span className="text-xs text-text-muted">{step.duration}</span>
                  </div>
                  <div className="text-xs text-text-muted mb-2">阶段产出</div>
                  <ul className="space-y-1">
                    {step.deliverables.map((d) => (
                      <li key={d} className="text-sm text-text-secondary">{d}</li>
                    ))}
                  </ul>
                </div>
              ))}
            </div>
          </motion.div>

          {/* Modes */}
          <motion.div
            initial={{ opacity: 0, y: 30 }}
            whileInView={{ opacity: 1, y: 0 }}
            viewport={{ once: true, margin: '-80px' }}
            transition={{ duration: 0.3, delay: 0.15, ease: EASE_OUT }}
            className="lg:col-span-5"
          >
            <h2 className="text-3xl sm:text-4xl md:text-5xl font-extrabold text-ink tracking-tight leading-[0.95] mb-10 sm:mb-14">
              合作方式
            </h2>

            <div className="space-y-4 sm:space-y-5">
              {SERVICE_MODES.map((mode) => (
                <div
                  key={mode.title}
                  className="group relative p-6 sm:p-7 border border-border-primary bg-bg-primary hover:bg-bg-secondary hover:border-brand/20 hover:shadow-md transition-all duration-300"
                >
                  <div className="relative z-10">
                    <h3 className="text-xl font-bold text-ink mb-3 group-hover:text-brand transition-colors duration-300">
                      {mode.title}
                    </h3>
                    <p className="text-text-secondary leading-relaxed text-sm sm:text-[15px] mb-4">{mode.description}</p>
                    <div className="text-sm font-medium text-ink">{mode.highlight}</div>
                  </div>
                </div>
              ))}
            </div>
          </motion.div>
        </div>
      </div>
    </section>
  );
}

function CTASection({ pageCopy }: { pageCopy?: PageCopy | null }) {
  const ctaTitle = (pageCopy?.servicesCtaTitle as string) || '准备好开始了吗？';
  const ctaDescriptionLines = ((pageCopy?.servicesCtaDescription as string) ||
    '无论是一个明确的项目，还是一个模糊的想法，我们都愿意坐下来和您一起理清楚。\n首次咨询免费，没有任何销售压力。').split('\n');

  return (
    <section className="relative py-20 sm:py-28 md: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="max-w-container mx-auto px-4 sm:px-6 lg:px-10 relative z-10">
        <motion.div
          initial={{ opacity: 0, y: 30 }}
          whileInView={{ opacity: 1, y: 0 }}
          viewport={{ once: true, margin: '-80px' }}
          transition={{ duration: 0.3, ease: EASE_OUT }}
          className="max-w-3xl"
        >
          <h2 className="text-3xl sm:text-4xl md:text-5xl lg:text-6xl font-extrabold text-ink tracking-tight leading-[0.95] mb-8">
            {ctaTitle}
          </h2>
          <p className="text-lg text-text-secondary leading-relaxed mb-10">
            {ctaDescriptionLines.map((line, i) => (
              <span key={i}>
                {i > 0 && <br className="hidden sm:block" />}
                {line}
              </span>
            ))}
          </p>
          <div className="flex flex-col sm:flex-row gap-4 sm:gap-6">
            <CTAButton href="/contact" dataTestId="services-bottom-primary" className="min-h-[52px]">
              预约免费咨询
            </CTAButton>
            <CTAButton href="/team" variant="secondary" dataTestId="services-bottom-secondary" className="min-h-[52px]">
              了解我们的团队
            </CTAButton>
          </div>
        </motion.div>
      </div>
    </section>
  );
}

export default function ServicesContentV3({ services, pageCopy }: { services?: Service[]; pageCopy?: PageCopy | null }) {
  return (
    <main className="bg-bg-primary text-ink">
      <HeroSection pageCopy={pageCopy} />
      <ServicesGridSection services={services} pageCopy={pageCopy} />
      <ProcessModesSection />
      <CTASection pageCopy={pageCopy} />
    </main>
  );
}