worldmonitor/api/story.js at main · NhoThoang/worldmonitor

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// Non-sebuf: returns XML/HTML, stays as standalone Vercel function

/**

* Story Page for Social Crawlers

* Returns HTML with proper og:image and twitter:card meta tags.

* Twitter/Facebook/LinkedIn crawlers hit this, real users get redirected to the SPA.

const COUNTRY_NAMES = {

UA: 'Ukraine', RU: 'Russia', CN: 'China', US: 'United States',

IR: 'Iran', IL: 'Israel', TW: 'Taiwan', KP: 'North Korea',

SA: 'Saudi Arabia', TR: 'Turkey', PL: 'Poland', DE: 'Germany',

FR: 'France', GB: 'United Kingdom', IN: 'India', PK: 'Pakistan',

SY: 'Syria', YE: 'Yemen', MM: 'Myanmar', VE: 'Venezuela',

};

export default function handler(req, res) {

const url = new URL(req.url, `https://${req.headers.host}`);

const countryCode = (url.searchParams.get('c') || '').toUpperCase();

const type = url.searchParams.get('t') || 'ciianalysis';

const ts = url.searchParams.get('ts') || '';

const score = url.searchParams.get('s') || '';

const level = url.searchParams.get('l') || '';

const ua = req.headers['user-agent'] || '';

const isBot = BOT_UA.test(ua);

const baseUrl = `https://${req.headers.host}`;

const spaUrl = `${baseUrl}/?c=${countryCode}&t=${type}${ts ? `&ts=${ts}` : ''}`;

// Real users → redirect to SPA

if (!isBot) {

res.writeHead(302, { Location: spaUrl });

res.end();

return;

}

// Bots → serve meta tags

const countryName = COUNTRY_NAMES[countryCode] || countryCode || 'Global';

const title = `${countryName} Intelligence Brief | World Monitor`;

const description = `Real-time instability analysis for ${countryName}. Country Instability Index, military posture, threat classification, and prediction markets. Free, open-source geopolitical intelligence.`;

const imageParams = `c=${countryCode}&t=${type}${score ? `&s=${score}` : ''}${level ? `&l=${level}` : ''}`;

const imageUrl = `${baseUrl}/api/og-story?${imageParams}`;

const storyUrl = `${baseUrl}/api/story?c=${countryCode}&t=${type}${ts ? `&ts=${ts}` : ''}`;

const html = `<!DOCTYPE html>

<head>

<title>${esc(title)}</title>

</head>

<body>

<h1>${esc(title)}</h1>

<p>${esc(description)}</p>

<p><a href="${esc(spaUrl)}">View live analysis</a></p>

</body>

</html>`;

res.setHeader('Content-Type', 'text/html; charset=utf-8');

res.setHeader('Cache-Control', 'public, max-age=300, s-maxage=300, stale-while-revalidate=60');

res.status(200).send(html);

}

function esc(str) {

return str.replace(/&/g, '&').replace(/"/g, '"').replace(/</g, '<').replace(/>/g, '>');

}

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