';
};
function buildMeta(){
const title = document.getElementById('title').value.trim();
const summary = document.getElementById('summary').value.trim();
const topic = document.getElementById('topic').value.trim();
const canonical = document.getElementById('canonical').value.trim();
const site = document.getElementById('site').value.trim();
const author = document.getElementById('author').value.trim();
const image = document.getElementById('image').value.trim();
const lang = document.getElementById('lang').value;
const index = document.getElementById('index').checked;
const follow = document.getElementById('follow').checked;
const includeKeywords = document.getElementById('includeKeywords').checked;
const includeJsonLd = document.getElementById('includeJsonLd').checked;
const err = document.getElementById('err');
const out = document.getElementById('out');
err.style.display = 'none'; err.textContent = ''; out.textContent = '';
if (!title){ err.textContent = 'Please enter Page Title.'; err.style.display = ''; return; }
const desc = trimSentence(summary || title, 160);
const robots = makeRobots(index, follow);
const kws = extractKeywords(summary + ' ' + title, topic);
const canon = canonical || (site ? (site.replace(/\/$/,'') + '/' + slugify(title)) : '');
const lines = [];
lines.push('
' + esc(title) + '');
lines.push('
');
lines.push('
');
lines.push('
');
lines.push('
');
if (includeKeywords && kws.length) lines.push('
');
if (canon) lines.push('
');
if (lang) lines.push('
');
// Open Graph
lines.push('
');
lines.push('
');
if (canon) lines.push('
');
if (site) lines.push('
');
if (image) lines.push('
');
lines.push('
');
// Twitter Cards
lines.push('
');
lines.push('
');
lines.push('
');
if (image) lines.push('
');
const tw = document.getElementById('twitter').value.trim();
if (tw) lines.push('
');
// JSON-LD
if (includeJsonLd) lines.push(makeJsonLd({title, description: desc, author, image, lang, site, canonical: canon}));
document.getElementById('out').textContent = lines.join('\n');
}
document.getElementById('btnGen').addEventListener('click', buildMeta);
document.getElementById('btnClear').addEventListener('click', () => {
['title','summary','topic','canonical','site','author','image','twitter'].forEach(id => document.getElementById(id).value='');
document.getElementById('index').checked = true; document.getElementById('follow').checked = true;
document.getElementById('lang').value = 'en';
document.getElementById('includeKeywords').checked = true; document.getElementById('includeJsonLd').checked = false;
document.getElementById('err').style.display = 'none'; document.getElementById('out').textContent = '';
});
document.getElementById('btnCopy').addEventListener('click', async () => {
try { await navigator.clipboard.writeText(document.getElementById('out').textContent || ''); alert('Copied!'); }
catch(e){ alert('Copy failed'); }
});
document.getElementById('btnDownload').addEventListener('click', () => {
const content = document.getElementById('out').textContent || '';
const html = '\n\n' + content + '\n';
const blob = new Blob([html], {type:'text/html'});
const url = URL.createObjectURL(blob);
const a = document.createElement('a'); a.href = url; a.download = 'meta-tags.html';
document.body.appendChild(a); a.click(); a.remove(); URL.revokeObjectURL(url);
});
