import type { Metadata } from "next";
import Link from "next/link";
import { Hero } from "@/components/Hero";
import { Button } from "@/components/Button";
import { Section, SectionHeading } from "@/components/Section";
import { AngebotCard } from "@/components/AngebotCard";
import { ImagePlaceholder } from "@/components/ImagePlaceholder";
import { RichText } from "@/components/RichText";
import { CTA } from "@/components/CTA";
import { Reveal } from "@/components/Reveal";
import { EventTeaserCard } from "@/components/EventTeaserCard";
import { getOffers, getPosts, getUpcomingEvents } from "@/lib/payload/content";
import { getHomeGlobal, getSEOSettingsGlobal } from "@/lib/payload/globals";
import { groupOffersByCategory, moodForOffer } from "@/lib/angebote";
import { mediaAlt, mediaUrl } from "@/lib/payload/media";
import { siteConfig } from "@/lib/site";
import { resolveSeo } from "@/lib/seo/resolve";
import { buildMetadata } from "@/lib/seo/metadata";
import { getSiteUrl } from "@/lib/seo/config";
import { JsonLd, webPageJsonLd } from "@/lib/seo/jsonld";

export const dynamic = "force-dynamic";

export async function generateMetadata(): Promise<Metadata> {
  const [home, seoSettings] = await Promise.all([getHomeGlobal(), getSEOSettingsGlobal()]);
  const resolved = resolveSeo({
    seo: home.seo,
    fallbackTitle: `${siteConfig.name} – Begleitung für dich und deine Familie`,
    fallbackDescription: () =>
      home.heroSupporting ||
      seoSettings.defaultDescription ||
      "Prozessbegleitung, Doula-Begleitung, Kindergruppen und Singkreise — Räume für Verbindung mit dir selbst, miteinander und mit der Natur.",
    fallbackImage: home.heroImage,
    defaultOgImage: seoSettings.defaultOgImage,
  });
  const meta = await buildMetadata({
    title: resolved.title,
    description: resolved.description,
    path: "",
    ogImageUrl: resolved.ogImageUrl,
    keywords: resolved.keywords,
  });
  // Homepage bypasses the "%s — Anouma" title template — the brand is
  // already part of the fallback/CMS title itself, avoiding "Anouma — Anouma".
  return { ...meta, title: { absolute: resolved.title } };
}

export default async function Home() {
  const [home, offers, posts, events] = await Promise.all([
    getHomeGlobal(),
    getOffers(),
    getPosts(3),
    getUpcomingEvents(3),
  ]);
  const groups = groupOffersByCategory(offers);
  const siteUrl = await getSiteUrl();

  return (
    <>
      <JsonLd
        data={webPageJsonLd({
          name: home.heroTitle || "Willkommen bei Anouma",
          description: home.heroSupporting || siteConfig.description,
          url: siteUrl,
        })}
      />
      <Hero
        eyebrow={home.heroEyebrow ?? undefined}
        title={home.heroTitle || "Willkommen bei Anouma"}
        mood="rose"
        imageSrc={mediaUrl(home.heroImage, "hero")}
        imageAlt={mediaAlt(home.heroImage)}
        actions={
          <>
            <Button href="/termin-buchen">Termin buchen</Button>
            <Button href="/angebote" variant="secondary">
              Angebote entdecken
            </Button>
          </>
        }
      >
        {home.heroHighlight && <p>{home.heroHighlight}</p>}
        {home.heroSupporting && (
          <p className="mt-3 text-base text-anouma-plum/90">{home.heroSupporting}</p>
        )}
      </Hero>

      <Section tone="cream">
        <SectionHeading
          eyebrow="Angebote"
          title="Räume, die zu deinem Weg passen"
          lead="Von persönlicher Prozessbegleitung über Doula-Begleitung bis zu Kinder- und Singkreisen — jedes Angebot ist ein eigener, geschützter Raum."
        />
        <div className="mt-14 grid gap-6 sm:grid-cols-2 lg:grid-cols-4">
          {groups.map((group, i) => {
            const isSingle = group.offers.length === 1;
            const first = group.offers[0];
            return (
              <Reveal key={group.category} delay={i * 0.08}>
                <AngebotCard
                  href={isSingle ? `/angebote/${first.slug}` : group.href}
                  title={group.label}
                  tagline={isSingle ? first.shortDescription : `${group.offers.length} Angebote`}
                  mood={moodForOffer(first)}
                  imageSrc={mediaUrl(first.image, "card")}
                />
              </Reveal>
            );
          })}
        </div>
      </Section>

      {(home.aboutTitle || home.aboutText) && (
        <Section tone="plain">
          <div className="grid gap-14 lg:grid-cols-2 lg:items-center">
            <Reveal>
              <div className="relative mx-auto aspect-[4/5] w-full max-w-md lg:max-w-none">
                <ImagePlaceholder
                  mood="mauve"
                  label="Anouma"
                  src={mediaUrl(home.aboutImage, "hero")}
                  alt={mediaAlt(home.aboutImage)}
                  className="h-full w-full"
                />
              </div>
            </Reveal>
            <Reveal delay={0.1}>
              {home.aboutEyebrow && (
                <p className="mb-3 text-xs font-medium uppercase tracking-[0.22em] text-anouma-plum">
                  {home.aboutEyebrow}
                </p>
              )}
              {home.aboutTitle && (
                <h2 className="text-balance font-serif text-4xl font-medium leading-tight text-anouma-plum sm:text-5xl">
                  {home.aboutTitle}
                </h2>
              )}
              {home.aboutText && (
                <div className="mt-6">
                  <RichText data={home.aboutText} />
                </div>
              )}
              <div className="mt-8">
                <Button href="/ueber-mich" variant="ghost">
                  Mehr über mich lesen →
                </Button>
              </div>
            </Reveal>
          </div>
        </Section>
      )}

      {home.values && home.values.length > 0 && (
        <Section tone="mauve">
          <SectionHeading
            eyebrow={home.valuesEyebrow ?? undefined}
            title={home.valuesTitle || "Philosophie"}
            align="center"
            className="mx-auto text-anouma-cream-light [&_h2]:text-anouma-cream-light [&_p]:text-anouma-cream-light/90"
          />
          <div className="mt-16 grid gap-10 sm:grid-cols-3">
            {home.values.map((wert, i) => (
              <Reveal key={wert.id ?? wert.title} delay={i * 0.1} className="text-center">
                <p className="font-serif text-sm font-medium uppercase tracking-[0.2em] text-white/85">
                  {wert.title}
                </p>
                <p className="mt-4 text-balance font-serif text-2xl leading-snug italic">
                  „{wert.quote}“
                </p>
              </Reveal>
            ))}
          </div>
        </Section>
      )}

      {events.length > 0 && (
        <Section tone="warm">
          <div className="flex flex-wrap items-end justify-between gap-6">
            <SectionHeading eyebrow="Termine" title="Aktuelle Termine" className="mb-0" />
            <Button href="/termine" variant="ghost">
              Alle Termine →
            </Button>
          </div>
          <div className="mt-12 grid gap-6 sm:grid-cols-3">
            {events.map((event, i) => (
              <Reveal key={event.slug} delay={i * 0.08}>
                <EventTeaserCard event={event} />
              </Reveal>
            ))}
          </div>
        </Section>
      )}

      {posts.length > 0 && (
        <Section tone="cream">
          <div className="flex flex-wrap items-end justify-between gap-6">
            <SectionHeading eyebrow="Aktuelles" title="Neuigkeiten und Inspiration" className="mb-0" />
            <Button href="/aktuelles" variant="ghost">
              Alle Neuigkeiten →
            </Button>
          </div>
          <div className="mt-12 grid gap-6 sm:grid-cols-3">
            {posts.map((post, i) => (
              <Reveal key={post.slug} delay={i * 0.08}>
                <Link href={`/aktuelles/${post.slug}`} className="block rounded-3xl bg-background p-7">
                  <p className="text-xs font-medium uppercase tracking-[0.18em] text-anouma-plum">
                    {new Date(post.publishDate ?? post.createdAt).toLocaleDateString("de-DE", {
                      day: "2-digit",
                      month: "long",
                      year: "numeric",
                    })}
                  </p>
                  <h3 className="mt-3 font-serif text-xl font-medium text-anouma-plum">{post.title}</h3>
                  <p className="mt-3 text-sm leading-relaxed text-anouma-plum">{post.teaser}</p>
                </Link>
              </Reveal>
            ))}
          </div>
        </Section>
      )}

      <Section tone="plain">
        <SectionHeading eyebrow="Impressionen" title="Einblicke in gemeinsame Räume" align="center" className="mx-auto" />
        <div className="mt-14 grid grid-cols-2 gap-4 sm:grid-cols-4">
          {(["moss", "rose", "peach", "sand"] as const).map((mood, i) => (
            <Reveal key={mood} delay={i * 0.06}>
              <ImagePlaceholder mood={mood} label="Impression" shape="soft" className="aspect-square" />
            </Reveal>
          ))}
        </div>
        <div className="mt-10 text-center">
          <Link
            href="/impressionen"
            className="text-sm font-medium text-anouma-mauve-dark underline underline-offset-4"
          >
            Alle Impressionen ansehen
          </Link>
        </div>
      </Section>

      <CTA
        title={home.ctaTitle || "Kennenlernen & Termine vereinbaren"}
        lead={
          home.ctaLead ||
          "Ich freue mich, von dir zu hören — schreib mir oder buche direkt ein unverbindliches Kennenlerngespräch."
        }
      />
    </>
  );
}