interface JsonLdProps {
  data: Record<string, unknown>;
}

export function JsonLd({ data }: JsonLdProps) {
  // Escape `<` so user-controlled titles/descriptions cannot break out of the
  // <script> tag via `</script>` (JSON.stringify alone does not escape it).
  const json = JSON.stringify(data).replace(/</g, "\\u003c");
  return (
    <script
      type="application/ld+json"
      dangerouslySetInnerHTML={{ __html: json }}
    />
  );
}

const siteUrl =
  process.env.NEXT_PUBLIC_SITE_URL || "https://belgianbitcoinembassy.org";

export function OrganizationJsonLd({ sameAs }: { sameAs?: string[] } = {}) {
  const sameAsUrls =
    sameAs && sameAs.length > 0 ? sameAs : ["https://t.me/belgianbitcoinembassy"];
  return (
    <JsonLd
      data={{
        "@context": "https://schema.org",
        "@type": "Organization",
        "@id": `${siteUrl}/#organization`,
        name: "Belgian Bitcoin Embassy",
        url: siteUrl,
        logo: `${siteUrl}/og-default.png`,
        description:
          "Discover Bitcoin meetups across Belgium. Real conversations, education, and a strong local community.",
        sameAs: sameAsUrls,
        address: {
          "@type": "PostalAddress",
          addressLocality: "Antwerp",
          addressCountry: "BE",
        },
      }}
    />
  );
}

export function WebSiteJsonLd() {
  return (
    <JsonLd
      data={{
        "@context": "https://schema.org",
        "@type": "WebSite",
        name: "Belgian Bitcoin Embassy",
        url: siteUrl,
        description:
          "Discover Bitcoin meetups across Belgium. Real conversations, education, and a strong local community.",
        publisher: {
          "@type": "Organization",
          name: "Belgian Bitcoin Embassy",
          logo: { "@type": "ImageObject", url: `${siteUrl}/og-default.png` },
        },
      }}
    />
  );
}

interface BlogPostingJsonLdProps {
  title: string;
  description: string;
  slug: string;
  publishedAt?: string;
  authorName?: string;
}

export function BlogPostingJsonLd({
  title,
  description,
  slug,
  publishedAt,
  authorName,
}: BlogPostingJsonLdProps) {
  return (
    <JsonLd
      data={{
        "@context": "https://schema.org",
        "@type": "BlogPosting",
        headline: title,
        description,
        url: `${siteUrl}/blog/${slug}`,
        ...(publishedAt ? { datePublished: publishedAt } : {}),
        author: {
          "@type": "Person",
          name: authorName || "Belgian Bitcoin Embassy",
        },
        publisher: {
          "@type": "Organization",
          name: "Belgian Bitcoin Embassy",
          logo: { "@type": "ImageObject", url: `${siteUrl}/og-default.png` },
        },
        image: `${siteUrl}/og?title=${encodeURIComponent(title)}&type=blog`,
        mainEntityOfPage: {
          "@type": "WebPage",
          "@id": `${siteUrl}/blog/${slug}`,
        },
      }}
    />
  );
}

interface EventJsonLdProps {
  name: string;
  description?: string;
  startDate: string;
  endDate?: string;
  location?: string;
  url: string;
  imageUrl?: string;
  organizerName?: string;
  organizerUrl?: string;
}

export function EventJsonLd({
  name,
  description,
  startDate,
  endDate,
  location,
  url,
  imageUrl,
  organizerName,
  organizerUrl,
}: EventJsonLdProps) {
  const orgName = organizerName || "Belgian Bitcoin Embassy";
  const orgUrl = organizerUrl || siteUrl;
  return (
    <JsonLd
      data={{
        "@context": "https://schema.org",
        "@type": "Event",
        name,
        description: description || `Bitcoin meetup: ${name}`,
        startDate,
        ...(endDate ? { endDate } : {}),
        eventAttendanceMode: "https://schema.org/OfflineEventAttendanceMode",
        eventStatus: "https://schema.org/EventScheduled",
        ...(location
          ? {
              location: {
                "@type": "Place",
                name: location,
                address: {
                  "@type": "PostalAddress",
                  addressLocality: location,
                  addressCountry: "BE",
                },
              },
            }
          : {}),
        organizer: {
          "@type": "Organization",
          name: orgName,
          url: orgUrl,
        },
        image:
          imageUrl || `${siteUrl}/og?title=${encodeURIComponent(name)}&type=event`,
        url,
      }}
    />
  );
}

interface FaqJsonLdProps {
  items: { question: string; answer: string }[];
}

export function FaqPageJsonLd({ items }: FaqJsonLdProps) {
  if (items.length === 0) return null;
  return (
    <JsonLd
      data={{
        "@context": "https://schema.org",
        "@type": "FAQPage",
        mainEntity: items.map((item) => ({
          "@type": "Question",
          name: item.question,
          acceptedAnswer: {
            "@type": "Answer",
            text: item.answer,
          },
        })),
      }}
    />
  );
}

interface BreadcrumbItem {
  name: string;
  href: string;
}

export function BreadcrumbJsonLd({ items }: { items: BreadcrumbItem[] }) {
  return (
    <JsonLd
      data={{
        "@context": "https://schema.org",
        "@type": "BreadcrumbList",
        itemListElement: items.map((item, index) => ({
          "@type": "ListItem",
          position: index + 1,
          name: item.name,
          item: `${siteUrl}${item.href}`,
        })),
      }}
    />
  );
}