import Link from 'next/link';

import {
  ArrowRightIcon,
  CalendarIcon,
  FileTextIcon,
  GraduationCapIcon,
  LayoutDashboardIcon,
  MailIcon,
  ShieldCheckIcon,
  UsersIcon,
  WalletIcon,
  BedDoubleIcon,
  GlobeIcon,
  ZapIcon,
  HeadsetIcon,
  LockIcon,
  SmartphoneIcon,
  CheckIcon,
} from 'lucide-react';

import { PricingTable } from '@kit/billing-gateway/marketing';
import {
  CtaButton,
  EcosystemShowcase,
  FeatureShowcase,
  FeatureShowcaseIconContainer,
  GradientText,
  Hero,
  Pill,
  SecondaryHero,
} from '@kit/ui/marketing';
import { Trans } from '@kit/ui/trans';
import { cn } from '@kit/ui/utils';

import billingConfig from '~/config/billing.config';
import pathsConfig from '~/config/paths.config';

import { AnimateOnScroll } from './_components/animate-on-scroll';
import { FeatureCarousel } from './_components/feature-carousel';

function Home() {
  return (
    <div className={'mt-4 flex flex-col space-y-24 py-14 lg:space-y-36'}>
      {/* Hero Section */}
      <div className={'mx-auto'}>
        <Hero
          pill={
            <Pill label={'Neu'}>
              <span>
                <Trans i18nKey={'marketing.heroPill'} />
              </span>
            </Pill>
          }
          title={
            <span className="text-secondary-foreground">
              <Trans i18nKey={'marketing.heroTitleLine1'} />{' '}
              <GradientText className="from-primary to-primary/60">
                <Trans i18nKey={'marketing.heroTitleLine2'} />
              </GradientText>
            </span>
          }
          subtitle={
            <span>
              <Trans i18nKey={'marketing.heroSubtitle'} />
            </span>
          }
          cta={<MainCallToActionButton />}
          image={
            <div className="relative">
              <div
                className="bg-primary/10 absolute inset-0 -z-10 mx-auto max-w-3xl rounded-full blur-3xl"
                aria-hidden="true"
              />
              <FeatureCarousel />
            </div>
          }
        />
      </div>

      {/* Stats Bar */}
      <AnimateOnScroll>
        <div className={'container mx-auto'}>
          <div className="border-border border-y py-8">
            <p className="text-muted-foreground mb-6 text-center text-sm font-medium tracking-widest uppercase">
              <Trans i18nKey={'marketing.trustedBy'} />
            </p>
            <div className="reveal-stagger divide-border flex flex-wrap items-center justify-center divide-x">
              <StatItem value="69,000+" labelKey="marketing.statMembers" />
              <StatItem value="90+" labelKey="marketing.statOrganizations" />
              <StatItem value="22" labelKey="marketing.statYears" />
              <StatItem value="3" labelKey="marketing.statFederations" />
            </div>
          </div>
        </div>
      </AnimateOnScroll>

      {/* Core Modules Feature Grid */}
      <AnimateOnScroll>
        <div className={'container mx-auto'}>
          <div className={'py-4 xl:py-8'}>
            <FeatureShowcase
              heading={
                <>
                  <b className="font-medium tracking-tight dark:text-white">
                    <Trans i18nKey={'marketing.featuresHeading'} />
                  </b>
                  .{' '}
                  <span className="text-secondary-foreground/70 block font-normal tracking-tight">
                    <Trans i18nKey={'marketing.featuresSubheading'} />
                  </span>
                </>
              }
              icon={
                <FeatureShowcaseIconContainer>
                  <LayoutDashboardIcon className="h-4 w-4" />
                  <span>
                    <Trans i18nKey={'marketing.featuresLabel'} />
                  </span>
                </FeatureShowcaseIconContainer>
              }
            >
              <div className="reveal-stagger mt-2 grid w-full grid-cols-1 gap-4 md:mt-6 md:grid-cols-2 lg:grid-cols-3">
                <IconFeatureCard
                  icon={UsersIcon}
                  titleKey="marketing.featureMembersTitle"
                  descKey="marketing.featureMembersDesc"
                />
                <IconFeatureCard
                  icon={GraduationCapIcon}
                  titleKey="marketing.featureCoursesTitle"
                  descKey="marketing.featureCoursesDesc"
                  accentBg="bg-chart-1/10"
                  accentText="text-chart-1"
                />
                <IconFeatureCard
                  icon={BedDoubleIcon}
                  titleKey="marketing.featureBookingsTitle"
                  descKey="marketing.featureBookingsDesc"
                  accentBg="bg-chart-2/10"
                  accentText="text-chart-2"
                />
                <IconFeatureCard
                  icon={CalendarIcon}
                  titleKey="marketing.featureEventsTitle"
                  descKey="marketing.featureEventsDesc"
                  accentBg="bg-chart-3/10"
                  accentText="text-chart-3"
                />
                <IconFeatureCard
                  icon={WalletIcon}
                  titleKey="marketing.featureFinanceTitle"
                  descKey="marketing.featureFinanceDesc"
                  accentBg="bg-chart-4/10"
                  accentText="text-chart-4"
                />
                <IconFeatureCard
                  icon={MailIcon}
                  titleKey="marketing.featureNewsletterTitle"
                  descKey="marketing.featureNewsletterDesc"
                  accentBg="bg-chart-5/10"
                  accentText="text-chart-5"
                />
              </div>
            </FeatureShowcase>
          </div>
        </div>
      </AnimateOnScroll>

      {/* Testimonials */}
      <AnimateOnScroll>
        <div className="container mx-auto">
          <div className="flex flex-col items-center gap-12">
            <div className="text-center">
              <h2 className="text-3xl font-medium tracking-tight xl:text-5xl dark:text-white">
                <Trans i18nKey={'marketing.testimonialsHeading'} />
              </h2>
              <p className="text-secondary-foreground/70 mx-auto mt-4 max-w-2xl text-xl font-medium tracking-tight">
                <Trans i18nKey={'marketing.testimonialsSubheading'} />
              </p>
            </div>
            <div className="reveal-stagger grid w-full grid-cols-1 gap-6 md:grid-cols-3">
              <TestimonialCard
                quoteKey="marketing.testimonial1Quote"
                nameKey="marketing.testimonial1Name"
                roleKey="marketing.testimonial1Role"
              />
              <TestimonialCard
                quoteKey="marketing.testimonial2Quote"
                nameKey="marketing.testimonial2Name"
                roleKey="marketing.testimonial2Role"
              />
              <TestimonialCard
                quoteKey="marketing.testimonial3Quote"
                nameKey="marketing.testimonial3Name"
                roleKey="marketing.testimonial3Role"
              />
            </div>
          </div>
        </div>
      </AnimateOnScroll>

      {/* Additional Features Row */}
      <AnimateOnScroll>
        <div className={'container mx-auto'}>
          <div className={'py-4 xl:py-8'}>
            <FeatureShowcase
              heading={
                <>
                  <b className="font-medium tracking-tight dark:text-white">
                    <Trans i18nKey={'marketing.additionalFeaturesHeading'} />
                  </b>
                  .{' '}
                  <span className="text-secondary-foreground/70 block font-normal tracking-tight">
                    <Trans i18nKey={'marketing.additionalFeaturesSubheading'} />
                  </span>
                </>
              }
              icon={
                <FeatureShowcaseIconContainer>
                  <ZapIcon className="h-4 w-4" />
                  <span>
                    <Trans i18nKey={'marketing.additionalFeaturesLabel'} />
                  </span>
                </FeatureShowcaseIconContainer>
              }
            >
              <div className="reveal-stagger mt-2 grid w-full grid-cols-1 gap-4 md:mt-6 md:grid-cols-2 lg:grid-cols-3">
                <IconFeatureCard
                  icon={FileTextIcon}
                  titleKey="marketing.featureDocumentsTitle"
                  descKey="marketing.featureDocumentsDesc"
                  accentBg="bg-chart-1/10"
                  accentText="text-chart-1"
                />
                <IconFeatureCard
                  icon={GlobeIcon}
                  titleKey="marketing.featureSiteBuilderTitle"
                  descKey="marketing.featureSiteBuilderDesc"
                  accentBg="bg-chart-2/10"
                  accentText="text-chart-2"
                />
                <IconFeatureCard
                  icon={LayoutDashboardIcon}
                  titleKey="marketing.featureModulesTitle"
                  descKey="marketing.featureModulesDesc"
                  accentBg="bg-chart-3/10"
                  accentText="text-chart-3"
                />
              </div>
            </FeatureShowcase>
          </div>
        </div>
      </AnimateOnScroll>

      {/* Why Choose Us Section */}
      <AnimateOnScroll>
        <div className={'container mx-auto'}>
          <EcosystemShowcase
            heading={<Trans i18nKey={'marketing.whyChooseHeading'} />}
            description={<Trans i18nKey={'marketing.whyChooseDescription'} />}
            textPosition="right"
            className="border-primary/10 rounded-xl border"
          >
            <div className="flex flex-col gap-6">
              <WhyItem
                icon={SmartphoneIcon}
                titleKey="marketing.whyResponsiveTitle"
                descKey="marketing.whyResponsiveDesc"
              />
              <WhyItem
                icon={LockIcon}
                titleKey="marketing.whySecureTitle"
                descKey="marketing.whySecureDesc"
              />
              <WhyItem
                icon={HeadsetIcon}
                titleKey="marketing.whySupportTitle"
                descKey="marketing.whySupportDesc"
              />
              <WhyItem
                icon={ShieldCheckIcon}
                titleKey="marketing.whyGdprTitle"
                descKey="marketing.whyGdprDesc"
              />
            </div>
          </EcosystemShowcase>
        </div>
      </AnimateOnScroll>

      {/* How It Works */}
      <AnimateOnScroll>
        <div className="container mx-auto">
          <div className="flex flex-col items-center gap-12">
            <div className="text-center">
              <h2 className="text-3xl font-medium tracking-tight xl:text-5xl dark:text-white">
                <Trans i18nKey={'marketing.howItWorksHeading'} />
              </h2>
              <p className="text-secondary-foreground/70 mx-auto mt-4 max-w-2xl text-xl font-medium tracking-tight">
                <Trans i18nKey={'marketing.howItWorksSubheading'} />
              </p>
            </div>

            <div className="relative grid w-full grid-cols-1 gap-8 md:grid-cols-3">
              <div
                className="border-primary/30 absolute top-10 right-[16.67%] left-[16.67%] hidden h-px border-t border-dashed md:block"
                aria-hidden="true"
              />
              <StepCard
                step="01"
                titleKey="marketing.howStep1Title"
                descKey="marketing.howStep1Desc"
              />
              <StepCard
                step="02"
                titleKey="marketing.howStep2Title"
                descKey="marketing.howStep2Desc"
              />
              <StepCard
                step="03"
                titleKey="marketing.howStep3Title"
                descKey="marketing.howStep3Desc"
              />
            </div>
          </div>
        </div>
      </AnimateOnScroll>

      {/* Pricing Section */}
      <AnimateOnScroll>
        <div className={'container mx-auto'}>
          <div
            className={
              'flex flex-col items-center justify-center space-y-12 py-4 xl:py-8'
            }
          >
            <SecondaryHero
              pill={
                <Pill label={<Trans i18nKey={'marketing.pricingPillLabel'} />}>
                  <Trans i18nKey={'marketing.pricingPillText'} />
                </Pill>
              }
              heading={
                <GradientText className="from-primary to-primary/60">
                  <Trans i18nKey={'marketing.pricingHeading'} />
                </GradientText>
              }
              subheading={<Trans i18nKey={'marketing.pricingSubheading'} />}
            />

            <div className={'w-full'}>
              <PricingTable
                config={billingConfig}
                paths={{
                  signUp: pathsConfig.auth.signUp,
                  return: pathsConfig.app.home,
                }}
              />
            </div>
          </div>
        </div>
      </AnimateOnScroll>

      {/* Final CTA */}
      <AnimateOnScroll>
        <div className="container mx-auto">
          <div className="ring-primary/10 from-primary/10 via-background to-primary/5 flex flex-col items-center gap-8 rounded-2xl border bg-gradient-to-br p-12 text-center ring-1 lg:p-16">
            <h2 className="max-w-3xl text-3xl font-medium tracking-tight xl:text-5xl dark:text-white">
              <GradientText className="from-primary to-primary/60">
                <Trans i18nKey={'marketing.ctaHeading'} />
              </GradientText>
            </h2>
            <p className="text-secondary-foreground/70 max-w-2xl text-lg">
              <Trans i18nKey={'marketing.ctaDescription'} />
            </p>
            <div className="flex flex-col gap-3 sm:flex-row">
              <CtaButton className="h-14 px-10 text-lg">
                <Link href={'/auth/sign-up'}>
                  <span className="flex items-center gap-2">
                    <Trans i18nKey={'marketing.ctaButtonPrimary'} />
                    <ArrowRightIcon className="h-5 w-5" />
                  </span>
                </Link>
              </CtaButton>
              <CtaButton variant={'outline'} className="h-14 px-10 text-lg">
                <Link href={'/contact'}>
                  <Trans i18nKey={'marketing.ctaButtonSecondary'} />
                </Link>
              </CtaButton>
            </div>
            <p className="text-muted-foreground flex items-center gap-2 text-sm">
              <CheckIcon className="h-4 w-4" />
              <Trans i18nKey={'marketing.ctaNote'} />
            </p>
          </div>
        </div>
      </AnimateOnScroll>
    </div>
  );
}

export default Home;

function MainCallToActionButton() {
  return (
    <div className={'flex space-x-2.5'}>
      <CtaButton className="h-12 px-8 text-base shadow-lg">
        <Link href={'/auth/sign-up'}>
          <span className={'flex items-center space-x-0.5'}>
            <span>
              <Trans i18nKey={'common.getStarted'} />
            </span>

            <ArrowRightIcon
              className={
                'animate-in fade-in slide-in-from-left-8 h-4' +
                ' zoom-in fill-mode-both delay-1000 duration-1000'
              }
            />
          </span>
        </Link>
      </CtaButton>

      <CtaButton variant={'link'} className="h-12 px-8 text-base">
        <Link href={'/pricing'}>
          <Trans i18nKey={'common.pricing'} />
        </Link>
      </CtaButton>
    </div>
  );
}

function IconFeatureCard(props: {
  icon: React.ComponentType<{ className?: string }>;
  titleKey: string;
  descKey: string;
  accentBg?: string;
  accentText?: string;
}) {
  return (
    <div className="reveal bg-muted/50 hover:border-primary/20 flex flex-col gap-3 rounded-xl border border-transparent p-6 transition-all duration-300 hover:-translate-y-1 hover:shadow-md">
      <div
        className={cn(
          'flex h-10 w-10 items-center justify-center rounded-lg',
          props.accentBg ?? 'bg-primary/10',
        )}
      >
        <props.icon
          className={cn('h-5 w-5', props.accentText ?? 'text-primary')}
        />
      </div>
      <h4 className="text-lg font-medium">
        <Trans i18nKey={props.titleKey} />
      </h4>
      <p className="text-muted-foreground max-w-xs text-sm">
        <Trans i18nKey={props.descKey} />
      </p>
    </div>
  );
}

function StatItem(props: { value: string; labelKey: string }) {
  return (
    <div className="reveal flex flex-col items-center gap-1 px-6 py-4">
      <span className="text-primary text-3xl font-bold tracking-tight lg:text-4xl">
        {props.value}
      </span>
      <span className="text-muted-foreground text-sm font-medium">
        <Trans i18nKey={props.labelKey} />
      </span>
    </div>
  );
}

function TestimonialCard(props: {
  quoteKey: string;
  nameKey: string;
  roleKey: string;
}) {
  return (
    <div className="reveal border-border bg-card flex flex-col gap-4 rounded-xl border p-6 shadow-sm">
      <p className="text-secondary-foreground text-sm leading-relaxed italic">
        &ldquo;
        <Trans i18nKey={props.quoteKey} />
        &rdquo;
      </p>
      <div className="border-border border-t pt-4">
        <p className="text-sm font-medium">
          <Trans i18nKey={props.nameKey} />
        </p>
        <p className="text-muted-foreground text-xs">
          <Trans i18nKey={props.roleKey} />
        </p>
      </div>
    </div>
  );
}

function WhyItem(props: {
  icon: React.ComponentType<{ className?: string }>;
  titleKey: string;
  descKey: string;
}) {
  return (
    <div className="flex gap-4">
      <div className="ring-primary/20 bg-primary/10 flex h-12 w-12 shrink-0 items-center justify-center rounded-xl ring-1">
        <props.icon className="text-primary h-5 w-5" />
      </div>
      <div>
        <h4 className="text-secondary-foreground font-medium">
          <Trans i18nKey={props.titleKey} />
        </h4>
        <p className="text-muted-foreground mt-1 text-sm">
          <Trans i18nKey={props.descKey} />
        </p>
      </div>
    </div>
  );
}

function StepCard(props: { step: string; titleKey: string; descKey: string }) {
  return (
    <div className="reveal border-border bg-card relative flex flex-col items-center gap-4 rounded-xl border p-8 text-center shadow-sm transition-all duration-300 hover:-translate-y-1 hover:shadow-md">
      <div className="bg-primary text-primary-foreground shadow-primary/20 relative z-10 flex h-14 w-14 items-center justify-center rounded-full text-xl font-bold shadow-lg">
        {props.step}
      </div>
      <h3 className="text-secondary-foreground text-xl font-medium">
        <Trans i18nKey={props.titleKey} />
      </h3>
      <p className="text-muted-foreground text-sm">
        <Trans i18nKey={props.descKey} />
      </p>
    </div>
  );
}