import Link from "next/link";
import { headers } from "next/headers";
import { notFound } from "next/navigation";

import FavoriteToggle from "../../components/FavoriteToggle";
import WorkHeroGallery from "../../components/WorkHeroGallery";
import WorkShareActions from "../../components/WorkShareActions";
import { serverFetch } from "../../lib/api";

function toText(value: unknown, fallback = "") {
  return typeof value === "string" && value ? value : fallback;
}

function asArray(value: unknown): string[] {
  return Array.isArray(value) ? value.map((item) => String(item)) : [];
}

function asRecords(value: unknown): Array<Record<string, unknown>> {
  return Array.isArray(value) ? value.filter((item): item is Record<string, unknown> => Boolean(item) && typeof item === "object" && !Array.isArray(item)) : [];
}

function galleryFor(work: Record<string, unknown>) {
  const images = [toText(work.image_url), ...asArray(work.gallery_urls)].filter(Boolean);
  return Array.from(new Set(images));
}

function draftDataFor(work: Record<string, unknown>) {
  return work.draft_data && typeof work.draft_data === "object" && !Array.isArray(work.draft_data)
    ? work.draft_data as Record<string, unknown>
    : {};
}

export default async function WorkPage({ params }: { params: Promise<{ slug: string }> }) {
  const { slug } = await params;
  let work: Record<string, unknown>;
  try {
    const data = await serverFetch<{ work: Record<string, unknown> }>(`/works/${slug}`);
    work = data.work;
  } catch {
    notFound();
  }
  const requestHeaders = await headers();
  const gallery = galleryFor(work);
  const draftData = draftDataFor(work);
  const beforeImage = toText(draftData.beforeImageUrl);
  const afterImage = toText(draftData.afterImageUrl);
  const showBeforeAfter = Boolean(draftData.includeBeforeAfter && beforeImage && afterImage);
  const relatedWorks = asRecords(work.related_works);
  const title = toText(work.title, "Trabajo publicado");
  const makerName = toText(work.maker_name, "Maker");
  const host = requestHeaders.get("x-forwarded-host") || requestHeaders.get("host") || "dev.jazari.com.ar";
  const protocol = requestHeaders.get("x-forwarded-proto") || (host.includes("localhost") ? "http" : "https");
  const workUrl = `${protocol}://${host}/works/${slug}`;
  const contactHref = `/consultas/nueva?makerId=${encodeURIComponent(String(work.maker_id))}&sourceType=work&sourceId=${encodeURIComponent(String(work.id))}&makerName=${encodeURIComponent(makerName)}&contextTitle=${encodeURIComponent(title)}&returnTo=${encodeURIComponent(`/works/${slug}`)}`;

  return (
    <main className="page-shell work-detail-page">
      <section className="work-detail-phone">
        <WorkHeroGallery gallery={gallery} title={title} workId={String(work.id)} shareUrl={workUrl} />

        <section className="work-detail-title-card">
          <h1>{title}</h1>
          <div className="work-detail-tags">
            <span>{toText(work.technology, "FDM")}</span>
            <span>{toText(work.material, "PLA")}</span>
          </div>
          <Link href={`/makers/${toText(work.maker_slug)}`} className="work-detail-maker-card">
            <span>{makerName.slice(0, 2).toUpperCase()}</span>
            <div>
              <strong>{makerName}</strong>
              <small><span className="map-home-star">*</span> 4,9 | 128 opiniones | Aceptando trabajos</small>
            </div>
            <b>&gt;</b>
          </Link>
        </section>

        <section className="work-detail-section">
          <h2>Que se hizo?</h2>
          <p>{toText(work.summary, "Se reprodujo una pieza a medida para resolver una necesidad real del cliente.")}</p>
          <div className="work-detail-feature-grid">
            <article><span>01</span><strong>Pieza funcional</strong></article>
            <article><span>02</span><strong>Resiste calor</strong></article>
            <article><span>03</span><strong>1 unidad</strong></article>
            <article><span>04</span><strong>48 h fabricacion</strong></article>
          </div>
        </section>

        {showBeforeAfter ? (
          <section className="work-detail-section">
            <div className="work-detail-section-head">
              <h2>Antes / Resultado</h2>
              <Link href="#galeria">Ver mas</Link>
            </div>
            <div className="work-detail-before-after">
              <article>
                <img src={beforeImage} alt="Antes" />
                <span>Antes</span>
              </article>
              <b>&gt;</b>
              <article>
                <img src={afterImage} alt="Resultado" />
                <span>Resultado</span>
              </article>
            </div>
          </section>
        ) : null}

        <section className="work-detail-section">
          <h2>Historia del proyecto</h2>
          <p>{toText(work.story, "El cliente necesitaba recuperar una pieza o validar una solucion. Se tomo una referencia, se ajusto el diseno y se fabrico una version funcional lista para probar.")}</p>
        </section>

        <section className="work-detail-section">
          <details open>
            <summary>Detalles tecnicos</summary>
            <div className="work-detail-specs">
              <span>Tecnologia</span><strong>{toText(work.technology, "FDM")}</strong>
              <span>Material</span><strong>{toText(work.material, "PETG")}</strong>
              <span>Acabado</span><strong>Lijado y ajuste manual</strong>
              <span>Resolucion</span><strong>0,16 mm capa</strong>
              <span>Relleno</span><strong>40%</strong>
              <span>Tiempo</span><strong>48 horas</strong>
            </div>
          </details>
        </section>

        <section id="galeria" className="work-detail-section">
          <div className="work-detail-section-head">
            <h2>Galeria</h2>
            <span>{gallery.length} fotos</span>
          </div>
          <div className="work-detail-gallery-grid">
            {gallery.map((image, index) => (
              <img key={`${image}-${index}`} src={image} alt={`${title} ${index + 1}`} />
            ))}
          </div>
        </section>

        {relatedWorks.length ? (
          <section className="work-detail-section">
            <div className="work-detail-section-head">
              <h2>Tambien puede interesarte</h2>
              <Link href="/discover">Ver todos</Link>
            </div>
            <div className="work-detail-related-rail">
              {relatedWorks.map((item) => (
                <Link key={String(item.id)} href={`/works/${toText(item.slug)}`}>
                  <img src={toText(item.image_url, "/demo/work-custom.svg")} alt={toText(item.title, "Trabajo sugerido")} />
                  <strong>{toText(item.title, "Trabajo sugerido")}</strong>
                  <span>{toText(item.technology, "FDM")} | {toText(item.material, "PETG")}</span>
                </Link>
              ))}
            </div>
          </section>
        ) : null}

        <section className="work-detail-section work-detail-share">
          <h2>Compartir este trabajo</h2>
          <p>Comparte este enlace para mostrar la referencia o enviarla por WhatsApp.</p>
          <WorkShareActions title={title} url={workUrl} />
        </section>
      </section>

      <div className="work-detail-bottom-cta">
        <FavoriteToggle targetType="work" targetId={String(work.id)} compact />
        <a href={contactHref} className="button button-primary">Quiero algo similar</a>
      </div>
    </main>
  );
}