import Link from "next/link";
import { notFound } from "next/navigation";
import { ContentCard } from "@/components/public/ui";
import { prisma } from "@/lib/prisma";
import { siteSettings } from "@/lib/services/site-settings";

export const dynamic = "force-dynamic";

// Asset path matches AtomCMS's Blade view: asset('/assets/images/help-center/<image_url>').
const HELP_IMAGE_BASE = "/assets/images/help-center";

type HelpCategory = {
  id: bigint;
  name: string;
  content: string;
  position: number;
  imageUrl: string | null;
  buttonText: string | null;
  buttonUrl: string | null;
  buttonColor: string;
  buttonBorderColor: string;
  smallBox: boolean;
};

type HelpCategoryLink = {
  id: bigint;
  name: string;
  position: number;
};

// Faithful to AtomCMS: name / content / button_text carry a `:hotel` placeholder
// replaced with the configured hotel name before display.
function withHotel(text: string | null | undefined, hotelName: string): string {
  return (text ?? "").split(":hotel").join(hotelName);
}

export default async function HelpCategoryPage({
  params,
}: {
  params: Promise<{ category: string }>;
}) {
  const { category } = await params;

  let categoryId: bigint;
  try {
    categoryId = BigInt(category);
  } catch {
    notFound();
  }

  let cat: HelpCategory | null = null;
  try {
    cat = await prisma.websiteHelpCenterCategories.findUnique({
      where: { id: categoryId! },
      select: {
        id: true,
        name: true,
        content: true,
        position: true,
        imageUrl: true,
        buttonText: true,
        buttonUrl: true,
        buttonColor: true,
        buttonBorderColor: true,
        smallBox: true,
      },
    });
  } catch {
    cat = null;
  }

  if (!cat) notFound();

  const hotelName = (await siteSettings.get("hotel_name", "Atom")) ?? "Atom";

  // Sibling help topics, so the reader can jump between categories. Isolated
  // query: a DB hiccup degrades this list to empty rather than 500-ing.
  let siblings: HelpCategoryLink[] = [];
  try {
    siblings = await prisma.websiteHelpCenterCategories.findMany({
      where: { id: { not: categoryId! } },
      orderBy: { position: "asc" },
      select: { id: true, name: true, position: true },
      take: 50,
    });
  } catch {
    siblings = [];
  }

  const title = withHotel(cat.name, hotelName);
  const content = withHotel(cat.content, hotelName);
  const buttonText = withHotel(cat.buttonText, hotelName);
  const imageSrc = cat.imageUrl ? `${HELP_IMAGE_BASE}/${cat.imageUrl}` : "";
  const hasButton = Boolean(cat.buttonText && cat.buttonText.trim() !== "");

  return (
    <main style={{ display: "grid", gap: "1.5rem" }}>
      <p style={{ margin: 0 }}>
        <Link href="/help">← Help Center</Link>
      </p>

      <ContentCard icon="❓" title={title} subtitle="Help Center topic">
        {imageSrc ? (
          // eslint-disable-next-line @next/next/no-img-element
          <img
            src={imageSrc}
            alt=""
            style={{
              float: "right",
              maxWidth: 160,
              height: "auto",
              margin: "0 0 0.75rem 1rem",
            }}
          />
        ) : null}

        {/* content is author-supplied HTML in AtomCMS (rendered raw with {!! !!}). */}
        <div
          style={{ lineHeight: 1.7 }}
          // biome-ignore lint/security/noDangerouslySetInnerHtml: author-supplied help content, matches AtomCMS Blade
          dangerouslySetInnerHTML={{ __html: content }}
        />

        {hasButton ? (
          <div style={{ clear: "both", marginTop: "1rem" }}>
            <a
              href={cat.buttonUrl ?? "#"}
              className="btn"
              style={{
                backgroundColor: cat.buttonColor,
                border: `2px solid ${cat.buttonBorderColor}`,
              }}
            >
              {buttonText}
            </a>
          </div>
        ) : null}
      </ContentCard>

      {siblings.length > 0 ? (
        <ContentCard
          icon="🧭"
          title="More help topics"
          subtitle="Jump to another support topic"
        >
          <div className="card-grid sm-2 lg-3">
            {siblings.map((s) => (
              <Link
                key={String(s.id)}
                href={`/help/${String(s.id)}`}
                className="card hover"
                style={{ display: "block", color: "inherit" }}
              >
                <strong>{withHotel(s.name, hotelName)}</strong>
              </Link>
            ))}
          </div>
        </ContentCard>
      ) : null}
    </main>
  );
}