import Link from '@/components/LocalizedLink'
import { generateSeoMetadata } from '@/lib/seo'
import DynamicPageRenderer from '@/components/dynamic/DynamicPageRenderer'
import ProductCard from '@/components/ProductCard'
import { getCategoriesResult, getCmsPageResult, getProductsResult } from '@/lib/cms'
import { splitCmsLayoutSections } from '@/lib/cms-sections'
import { resolveLocalized } from '@/lib/localization'

export async function generateMetadata({ params }: { params: Promise<{ lang: string }> }) {
  const { lang } = await params;
  return generateSeoMetadata({
    title: 'Search Products | HomAroma',
    description: 'Search HomAroma products by scent, category, or keyword.',
    path: '/search',
    lang,
  });
}

export default async function SearchPage({ searchParams, params }: { searchParams: Promise<{ q?: string | string[] }>, params: Promise<{ lang: string }> }) {
  const { lang } = await params
  const sParams = await searchParams
  const rawQuery = Array.isArray(sParams.q) ? sParams.q[0] : sParams.q
  const query = rawQuery?.trim() ?? ''
  const [categoriesResult, cmsLayoutResult, productsResult] = await Promise.all([
    getCategoriesResult(lang),
    getCmsPageResult('search-layout', lang),
    query ? getProductsResult(`search=${encodeURIComponent(query)}&limit=1000`, lang) : Promise.resolve({ ok: true as const, data: [] }),
  ])
  const categories = categoriesResult.ok ? categoriesResult.data : []
  const cmsSections = cmsLayoutResult.ok ? cmsLayoutResult.data.sections ?? [] : []
  const { announcementSections, heroSections, bottomSections } = splitCmsLayoutSections(cmsSections)
  const products = productsResult.ok ? productsResult.data : []

  if (!cmsLayoutResult.ok && cmsLayoutResult.status !== 404) {
    console.error(`[website-cms] search-layout unavailable: ${cmsLayoutResult.error}`)
  }

  return (
    <div className="min-h-screen bg-surface-page text-text-main">
      {announcementSections.length > 0 && (
        <DynamicPageRenderer sections={announcementSections} categories={categories} lang={lang} />
      )}
      {heroSections.length > 0 ? (
        <DynamicPageRenderer sections={heroSections} categories={categories} lang={lang} />
      ) : (
        <section className="border-b border-line-primary/20 bg-surface-card px-6 py-16 text-center">
          <p className="ui-eyebrow">Search</p>
          <h1 className="mt-4 text-5xl font-semibold tracking-tight text-text-main">Find Your Scent</h1>
        </section>
      )}

      <section className="border-b border-line-primary/20 bg-surface-card/70 px-6 py-8">
        <form className="mx-auto flex max-w-xl overflow-hidden rounded-full border border-line-primary/20 bg-surface-card shadow-card" action="/search">
          <input
            name="q"
            defaultValue={query}
            placeholder="Search by scent or product name..."
            className="min-w-0 flex-1 px-5 py-3 text-sm text-text-main outline-none placeholder:text-muted-text/70"
          />
          <button className="bg-text-main px-6 py-3 text-sm font-bold uppercase tracking-widest text-white transition hover:bg-brand-primary">
            Search
          </button>
        </form>

        {categories.length > 0 && (
          <div className="mx-auto mt-5 flex max-w-3xl flex-wrap justify-center gap-2">
            {categories.map((category) => {
              const name = resolveLocalized(category.name, lang)
              if (!name) return null

              return (
                <Link
                  key={category.id}
                  href={`/search?q=${encodeURIComponent(name)}`}
                  className="rounded-full border border-line-primary/20 bg-surface-card px-4 py-1.5 text-xs font-semibold text-muted-text transition hover:border-brand-primary hover:text-brand-primary"
                >
                  {name}
                </Link>
              )
            })}
          </div>
        )}

        {query && (
          <p className="mt-5 text-center text-sm text-muted-text">
            {products.length > 0
              ? `Found ${products.length} result${products.length !== 1 ? 's' : ''} for "${query}"`
              : `No results for "${query}"`}
          </p>
        )}
      </section>

      <div className="mx-auto max-w-7xl px-6 py-12">
        {!query ? (
          <div className="ui-panel px-6 py-20 text-center">
            <p className="text-lg font-semibold text-text-main">Type something to search</p>
            <Link href="/shop" className="mt-4 inline-flex font-semibold text-brand-primary">
              Browse All Products &rarr;
            </Link>
          </div>
        ) : !productsResult.ok ? (
          <div className="ui-panel border border-rose-100 px-6 py-20 text-center">
            <p className="text-lg font-semibold text-text-main">Unable to search products</p>
            <p className="mt-2 text-sm text-rose-500">{productsResult.error}</p>
          </div>
        ) : products.length === 0 ? (
          <div className="ui-panel px-6 py-20 text-center">
            <p className="text-lg font-semibold text-text-main">No products found</p>
            <p className="mt-2 text-sm text-muted-text">Try a different scent name or keyword.</p>
            <Link href="/shop" className="mt-4 inline-flex font-semibold text-brand-primary">
              Browse All Products &rarr;
            </Link>
          </div>
        ) : (
          <div className="grid grid-cols-1 gap-8 md:grid-cols-3">
            {products.map((product) => <ProductCard key={product.id} product={product} />)}
          </div>
        )}
      </div>
      {bottomSections.length > 0 && (
        <DynamicPageRenderer sections={bottomSections} categories={categories} lang={lang} />
      )}
    </div>
  )
}