---
import Base from './Base.astro';
import TrackedProductLink from '../components/TrackedProductLink.astro';
import { coverWebpSources } from '../lib/cover-webp';

interface Props {
  title: string;
  description: string;
  metaTitle?: string;
  keywords?: string;
  pubDate: Date;
  modifiedDate?: Date;
  author?: string;
  authorUrl?: string;
  authorBio?: string;
  audience?: string;
  heroImage?: string;
  slug?: string;
  rawBody?: string;
  relatedPosts?: { title: string; description: string; href: string }[];
}

const { title, description, metaTitle, keywords, pubDate, modifiedDate, author, authorUrl, authorBio, audience, heroImage, slug, rawBody, relatedPosts = [] } = Astro.props;
function toAbsoluteWorldMonitorUrl(pathOrUrl: string | undefined): string | undefined {
  if (!pathOrUrl) return undefined;
  if (/^https?:\/\//.test(pathOrUrl)) return pathOrUrl;
  return new URL(pathOrUrl, 'https://www.worldmonitor.app').href;
}

const ogImage = toAbsoluteWorldMonitorUrl(heroImage || (slug ? `/blog/images/blog/${slug}.jpg` : undefined));
const canonicalUrl = slug
  ? `https://www.worldmonitor.app/blog/posts/${slug}/`
  : new URL(Astro.url.pathname, 'https://www.worldmonitor.app').href;
const formattedDate = pubDate.toLocaleDateString('en-US', {
  year: 'numeric',
  month: 'short',
  day: 'numeric',
});
const isoDate = pubDate.toISOString();
const isoModifiedDate = modifiedDate ? modifiedDate.toISOString() : isoDate;
const DEFAULT_AUTHOR = 'Elie Habib';
const DEFAULT_AUTHOR_URL = 'https://www.worldmonitor.app/blog/authors/elie-habib/';
const DEFAULT_AUTHOR_ID = `${DEFAULT_AUTHOR_URL}#person`;
const DEFAULT_AUTHOR_BIO = 'Founder of World Monitor. Previously co-founder & CEO of Anghami (NASDAQ: ANGH). Building open-source global intelligence infrastructure.';
const DEFAULT_AUTHOR_GITHUB = 'koala73';
const DEFAULT_SECTION = 'Global Intelligence';
const authorName = author || DEFAULT_AUTHOR;
const resolvedAuthorUrl = authorUrl || (authorName === DEFAULT_AUTHOR ? DEFAULT_AUTHOR_URL : undefined);
const resolvedAuthorBio = authorBio || (authorName === DEFAULT_AUTHOR ? DEFAULT_AUTHOR_BIO : undefined);
const avatarSrc = authorName === DEFAULT_AUTHOR
  ? `https://unavatar.io/github/${DEFAULT_AUTHOR_GITHUB}`
  : '/favico/apple-touch-icon.png';
// Committed covers have generated .webp / -640.webp siblings (guarded by
// tests/blog-cover-webp.test.mjs); coverWebpSources() returns null when the
// siblings don't exist (e.g. deploy-generated /blog/og/*.png covers).
const heroWebp = coverWebpSources(heroImage);
const showUpdated = modifiedDate && modifiedDate.getTime() !== pubDate.getTime();
const formattedModifiedDate = modifiedDate ? modifiedDate.toLocaleDateString('en-US', { year: 'numeric', month: 'short', day: 'numeric' }) : '';
const wordCount = rawBody ? rawBody.trim().split(/\s+/).filter(Boolean).length : undefined;
const readingMinutes = wordCount ? Math.max(1, Math.ceil(wordCount / 220)) : undefined;

function extractCitations(body: string | undefined): { "@type": string; name: string; url: string }[] {
  if (!body) return [];
  const citations: { "@type": string; name: string; url: string }[] = [];
  const seen = new Set<string>();
  const linkRegex = /\[([^\]]+)\]\((https?:\/\/[^\s)]+)(?:\s+"[^"]*")?\)/g;
  let match: RegExpExecArray | null;
  while ((match = linkRegex.exec(body)) !== null) {
    const url = match[2];
    const host = new URL(url).hostname.replace(/^www\./, '');
    if (host === 'worldmonitor.app' || host.endsWith('.worldmonitor.app') || seen.has(url)) continue;
    seen.add(url);
    citations.push({
      "@type": "CreativeWork",
      "name": match[1].replace(/[*_`]/g, '').trim(),
      "url": url
    });
  }
  return citations;
}

const citations = extractCitations(rawBody);

const breadcrumbLd = {
  "@context": "https://schema.org",
  "@type": "BreadcrumbList",
  "itemListElement": [
    {
      "@type": "ListItem",
      "position": 1,
      "name": "Blog",
      "item": "https://www.worldmonitor.app/blog/"
    },
    {
      "@type": "ListItem",
      "position": 2,
      "name": title,
      "item": canonicalUrl
    }
  ]
};

const jsonLd = {
  "@context": "https://schema.org",
  "@type": "BlogPosting",
  "@id": `${canonicalUrl}#article`,
  "headline": title,
  ...(metaTitle && metaTitle !== title ? { "alternativeHeadline": metaTitle } : {}),
  "description": description,
  "datePublished": isoDate,
  "dateModified": isoModifiedDate,
  "inLanguage": "en-US",
  "isAccessibleForFree": true,
  "articleSection": DEFAULT_SECTION,
  ...(audience ? {
    "audience": {
      "@type": "Audience",
      "audienceType": audience
    }
  } : {}),
  ...(wordCount ? { "wordCount": wordCount } : {}),
  ...(readingMinutes ? { "timeRequired": `PT${readingMinutes}M` } : {}),
  "author": {
    "@type": "Person",
    "name": authorName,
    ...(resolvedAuthorUrl ? { "url": resolvedAuthorUrl } : {}),
    ...(authorName === DEFAULT_AUTHOR ? {
      "@id": DEFAULT_AUTHOR_ID,
      "sameAs": [
        "https://x.com/eliehabib",
        `https://github.com/${DEFAULT_AUTHOR_GITHUB}`
      ]
    } : {})
  },
  "publisher": {
    "@type": "Organization",
    "@id": "https://www.worldmonitor.app/#organization",
    "name": "World Monitor",
    "url": "https://www.worldmonitor.app",
    "sameAs": [
      "https://github.com/koala73/worldmonitor",
      "https://x.com/worldmonitorai"
    ],
    "logo": {
      "@type": "ImageObject",
      "url": "https://www.worldmonitor.app/favico/apple-touch-icon.png"
    }
  },
  "mainEntityOfPage": {
    "@type": "WebPage",
    "@id": canonicalUrl
  },
  "image": ogImage || "https://www.worldmonitor.app/favico/og-image.png",
  "url": canonicalUrl,
  "isPartOf": {
    "@type": "Blog",
    "@id": "https://www.worldmonitor.app/blog/#blog",
    "name": "World Monitor Blog",
    "url": "https://www.worldmonitor.app/blog/"
  },
  ...(citations.length > 0 ? { "citation": citations } : {}),
  ...(keywords ? { "keywords": keywords } : {})
};

function extractFaqLd(body: string | undefined): object | null {
  if (!body) return null;
  const faqIdx = body.indexOf('## Frequently Asked Questions');
  if (faqIdx === -1) return null;
  const afterFaq = body.slice(faqIdx + '## Frequently Asked Questions'.length);
  // The FAQ section ends at the next H2 OR at a horizontal rule — nearly
  // every post closes its FAQ with `---` followed by a bold takeaway/CTA
  // paragraph, which must not be extracted as a Question.
  const nextHeading = afterFaq.search(/\n##\s|\n---\s*\n/);
  const faqSection = nextHeading === -1 ? afterFaq : afterFaq.slice(0, nextHeading);
  // \n+ (not \n): every post writes a blank line between the bolded question
  // and its answer — with a single \n the regex matched nothing and NO post
  // ever emitted FAQPage JSON-LD (#5001). Guarded against the real post
  // corpus by tests/blog-faq-ld.test.mjs.
  const qaRegex = /\*\*(.+?)\*\*\n+([^\n*]+(?:\n[^\n*#]+)*)/g;
  const items: { "@type": string; name: string; acceptedAnswer: { "@type": string; text: string } }[] = [];
  let match: RegExpExecArray | null;
  while ((match = qaRegex.exec(faqSection)) !== null) {
    const q = match[1].trim();
    const a = match[2].replace(/\[([^\]]+)\]\([^)]+\)/g, '$1').trim();
    if (q && a) items.push({ "@type": "Question", name: q, acceptedAnswer: { "@type": "Answer", text: a } });
  }
  if (items.length === 0) return null;
  return { "@context": "https://schema.org", "@type": "FAQPage", "mainEntity": items };
}

const faqLd = extractFaqLd(rawBody);
---

<Base
  title={title}
  description={description}
  metaTitle={metaTitle}
  keywords={keywords}
  ogType="article"
  ogImage={ogImage}
  ogImageAlt={`${title} - World Monitor Blog`}
  canonicalUrl={canonicalUrl}
  publishedTime={isoDate}
  modifiedTime={isoModifiedDate}
  author={authorName}
  section={DEFAULT_SECTION}
  jsonLd={jsonLd}
  breadcrumbLd={breadcrumbLd}
  faqLd={faqLd ?? undefined}
  attributionCampaign={slug}
>
  <article>
    <div class="article-header">
      <a href="/blog/" class="back">&larr; All articles</a>
      <div class="meta">
        <time datetime={isoDate}>{formattedDate}</time>
        {showUpdated && <span> &middot; Updated <time datetime={isoModifiedDate}>{formattedModifiedDate}</time></span>}
        {audience && <span> &middot; {audience}</span>}
      </div>
    </div>
    {heroImage && (
      <picture>
        {heroWebp && (
          <source
            type="image/webp"
            srcset={`${heroWebp.webp640} 640w, ${heroWebp.webp} 1200w`}
            sizes="(max-width: 812px) calc(100vw - 2rem), 780px"
          />
        )}
        <img src={heroImage} alt={title} class="hero-image" width="1200" height="630" fetchpriority="high" decoding="async" />
      </picture>
    )}
    <div class="article-content prose">
      <h1>{title}</h1>
      <p class="article-dek">{description}</p>
      <slot />
    </div>
    {relatedPosts.length > 0 && (
      <nav class="related-posts" aria-labelledby="related-posts-title">
        <h2 id="related-posts-title">Related Intelligence Guides</h2>
        <div class="related-post-grid">
          {relatedPosts.map((post) => (
            <a href={post.href} class="related-post-card">
              <span>Read Next</span>
              <h3>{post.title}</h3>
              <p>{post.description}</p>
            </a>
          ))}
        </div>
      </nav>
    )}
    <div class="cta-banner">
      <h3>Put the Intelligence to Work</h3>
      <p>Open the live dashboard free, or explore Pro for deeper analyst workflows, alerts, and AI research.</p>
      <div class="cta-actions">
        <TrackedProductLink
          destination="dashboard"
          placement="article-cta-dashboard"
          campaign={slug}
          class="btn"
        >
          Open Dashboard
        </TrackedProductLink>
        <TrackedProductLink
          destination="pro"
          placement="article-cta-pro"
          campaign={slug}
          class="btn btn-secondary"
        >
          Explore Pro
        </TrackedProductLink>
      </div>
    </div>
    <div class="author-bio">
      <img src={avatarSrc} alt={authorName} width="48" height="48" class="author-avatar" loading="lazy" onerror="this.src='/favico/apple-touch-icon.png'" />
      <div class="author-info">
        <div class="author-name">
          {resolvedAuthorUrl
            ? <a href={resolvedAuthorUrl} rel="author">{authorName}</a>
            : <span>{authorName}</span>
          }
        </div>
        {resolvedAuthorBio && <div class="author-desc" set:html={resolvedAuthorBio} />}
      </div>
    </div>
  </article>
</Base>