import { createClient } from "@supabase/supabase-js";
import { rewriteLegacyImageUrl } from "@/lib/legacy-image";
import FeaturedCarousel from "./FeaturedCarousel";

export const dynamic = "force-dynamic";

function initials(name: string): string {
  const parts = name.split(/\s+/).filter(Boolean);
  if (parts.length === 0) return "??";
  const first = parts[0][0] || "";
  const last = parts.length > 1 ? parts[parts.length - 1][0] || "" : "";
  return (first + last).toUpperCase();
}

function readTime(text: string | null | undefined): number {
  if (!text) return 1;
  const words = text.replace(/<[^>]+>/g, " ").split(/\s+/).filter(Boolean).length;
  return Math.max(1, Math.round(words / 200));
}

function agoMinutes(iso: string | null): number {
  if (!iso) return 0;
  return Math.max(0, Math.floor((Date.now() - new Date(iso).getTime()) / 60000));
}

export default async function FeaturedCarouselServer() {
  const sb = createClient(
    process.env.NEXT_PUBLIC_SUPABASE_URL!,
    process.env.NEXT_PUBLIC_SUPABASE_ANON_KEY!,
    {
      db: { schema: (process.env.NEXT_PUBLIC_SUPABASE_SCHEMA || "bb") as "public" },
      auth: { persistSession: false },
    }
  );

  const [wp, ai] = await Promise.all([
    sb
      .from("wp_imported_posts")
      .select("wp_id, wp_slug, title, excerpt, content, featured_image, author_name, category, wp_published_at, neural_summary")
      .eq("status", "published")
      .eq("featured", true)
      .order("wp_published_at", { ascending: false })
      .limit(5),
    sb
      .from("ai_rewritten_articles")
      .select("id, slug, title, excerpt, body, category, published_at, neural_summary, persona:ai_personas(name, beat)")
      .eq("status", "published")
      .eq("featured", true)
      .order("published_at", { ascending: false, nullsFirst: false })
      .limit(5),
  ]);

  const slides: any[] = [];

  for (const r of (ai.data || []) as any[]) {
    const persona = Array.isArray(r.persona) ? r.persona[0] : r.persona;
    const author = persona?.name || "Staff Reporter";
    slides.push({
      id: r.id,
      slug: r.slug,
      title: r.title,
      excerpt: r.excerpt || "",
      image: null,
      category: r.category || "News",
      author,
      author_initials: initials(author),
      author_beat: persona?.beat || null,
      date: r.published_at,
      read_min: readTime(r.body),
      ago_min: agoMinutes(r.published_at),
      neural_summary: r.neural_summary || null,
    });
  }

  for (const r of (wp.data || []) as any[]) {
    const image = r.featured_image ? rewriteLegacyImageUrl(r.featured_image) : null;
    const author = r.author_name || "Staff Reporter";
    slides.push({
      id: String(r.wp_id),
      slug: r.wp_slug,
      title: r.title,
      excerpt: r.excerpt || "",
      image,
      category: r.category || "News",
      author,
      author_initials: initials(author),
      author_beat: null,
      date: r.wp_published_at,
      read_min: readTime(r.content),
      ago_min: agoMinutes(r.wp_published_at),
      neural_summary: r.neural_summary || null,
    });
  }

  // Cap to 5 most recent across both sources
  slides.sort((a, b) => new Date(b.date || 0).getTime() - new Date(a.date || 0).getTime());
  const top5 = slides.slice(0, 5);

  if (top5.length === 0) return null;
  return <FeaturedCarousel slides={top5} />;
}