#!/usr/bin/env node
// Generates static HTML for each article under dist/article/{slug}/index.html
import { readFileSync, writeFileSync, mkdirSync } from 'fs';
import { articles, authors, siteConfig } from '../global-data.js';

const SITE = siteConfig.url;
const template = readFileSync('dist/index.html', 'utf8');

function capDate(d) {
  const now = new Date().toISOString().split('T')[0];
  return d > now ? now : d;
}

let count = 0;
for (const article of articles) {
  const author = authors.find(a => a.id === article.author);
  const canonical = `${SITE}/article/${article.slug}`;
  const ogImage = `${SITE}${article.photo}`;
  const lastmod = capDate(article.dateEn);

  const jsonLd = JSON.stringify({
    '@context': 'https://schema.org',
    '@type': ['NewsArticle', 'TechArticle'],
    headline: article.metaTitle || article.title,
    description: article.metaDescription || article.subtitle,
    image: ogImage,
    datePublished: article.dateEn,
    dateModified: lastmod,
    inLanguage: 'en',
    isAccessibleForFree: true,
    mainEntityOfPage: { '@type': 'WebPage', '@id': canonical },
    author: author ? {
      '@type': 'Person',
      name: author.name,
      url: `${SITE}/author/${author.slug}`,
    } : undefined,
    publisher: {
      '@type': ['Organization', 'NewsMediaOrganization'],
      name: 'Teknav',
      url: SITE,
      logo: { '@type': 'ImageObject', url: `${SITE}/images/og/default.jpg` },
    },
  });

  const hreflang = article.persianUrl
    ? `<link rel="alternate" hreflang="fa" href="${article.persianUrl}"/>
    <link rel="alternate" hreflang="en" href="${canonical}"/>
    <link rel="alternate" hreflang="x-default" href="${article.persianUrl}"/>`
    : '';

  const head = `
    <title>${(article.metaTitle || article.title).replace(/"/g, '&quot;')} | Teknav</title>
    <meta name="description" content="${(article.metaDescription || article.subtitle || '').replace(/"/g, '&quot;')}"/>
    <link rel="canonical" href="${canonical}"/>
    ${hreflang}
    <meta property="og:title" content="${(article.metaTitle || article.title).replace(/"/g, '&quot;')}"/>
    <meta property="og:description" content="${(article.metaDescription || article.subtitle || '').replace(/"/g, '&quot;')}"/>
    <meta property="og:image" content="${ogImage}"/>
    <meta property="og:url" content="${canonical}"/>
    <meta property="og:type" content="article"/>
    <meta property="og:locale" content="en_US"/>
    ${article.persianUrl ? `<meta property="og:locale:alternate" content="fa_IR"/>` : ''}
    <meta name="twitter:card" content="summary_large_image"/>
    <meta name="twitter:title" content="${(article.metaTitle || article.title).replace(/"/g, '&quot;')}"/>
    <meta name="twitter:image" content="${ogImage}"/>
    <script type="application/ld+json">${jsonLd}</script>`;

  const html = template.replace('</head>', `${head}\n  </head>`);

  const dir = `dist/article/${article.slug}`;
  mkdirSync(dir, { recursive: true });
  writeFileSync(`${dir}/index.html`, html);
  count++;
}

console.log(`[article-pages] generated ${count} static article HTML pages`);