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Fix SEO payload generation contract #10

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Merged
ChrisAdamsdevelopment merged 1 commit into from
May 4, 2026
Merged

Fix SEO payload generation contract #10

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38 changes: 36 additions & 2 deletions app.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -931,8 +931,42 @@ export default function App() {
className="w-full bg-slate-950 border border-slate-700 rounded-lg px-3 py-2 text-sm focus:border-cyan-500 outline-none resize-none" />
</div>
<button onClick={async ()=>{
const res = await fetch(`${BACKEND_URL}/api/generate-seo`, { method:'POST', headers:{'Content-Type':'application/json', Authorization:`Bearer ${authToken}`}, body: JSON.stringify({ title: activeItem.seo.title, artist: activeItem.analysis?.artist || '', genre: activeItem.analysis?.genre || '', platform })});
if (res.ok) { const d = await res.json(); updateItem(activeItem.id, { seo: { title: d.title || activeItem.seo.title, description: d.description || '', tags: d.tags || '' } }); addLog(activeItem.id, 'SEO payload generated'); }
try {
const res = await fetch(`${BACKEND_URL}/api/generate-seo`, {
method:'POST',
headers:{'Content-Type':'application/json', Authorization:`Bearer ${authToken}`},
body: JSON.stringify({
title: activeItem.seo.title,
artist: activeItem.analysis?.artist || '',
genre: activeItem.analysis?.genre || '',
description: activeItem.seo.description || '',
tags: activeItem.seo.tags || '',
platform,
}),
});

const payload = await res.json().catch(() => ({}));
if (!res.ok) {
const errorMessage = payload?.error || `SEO generation failed (${res.status})`;
updateItem(activeItem.id, { error: errorMessage });
addLog(activeItem.id, `SEO generation failed: ${errorMessage}`);
return;
}

updateItem(activeItem.id, {
error: null,
seo: {
title: payload.title || activeItem.seo.title,
description: payload.description || activeItem.seo.description,
tags: payload.tags || activeItem.seo.tags,
},
});
addLog(activeItem.id, 'SEO payload generated');
} catch {
const errorMessage = 'Unable to generate SEO payload right now.';
updateItem(activeItem.id, { error: errorMessage });
addLog(activeItem.id, `SEO generation failed: ${errorMessage}`);
}
}} className="px-3 py-1.5 text-xs bg-violet-700 hover:bg-violet-600 rounded-lg">Generate AI SEO Payload</button>
<div>
<label className="block text-[10px] font-bold text-slate-500 uppercase mb-1">Tags (comma-separated)</label>
Expand Down
58 changes: 54 additions & 4 deletions server.js
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Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -354,10 +354,48 @@ fs.ensureDirSync('uploads');
// ─────────────────────────────────────────────────────────────────────────────
// Gemini SEO proxy
// ─────────────────────────────────────────────────────────────────────────────
function asCleanText(v, max = 2000) {
if (typeof v !== 'string') return '';
return v.trim().slice(0, max);
}

function buildSeoPrompt(payload = {}) {
const directPrompt = asCleanText(payload.promptText, 4000);
if (directPrompt) return directPrompt;

const fields = {
title: asCleanText(payload.title, 255),
artist: asCleanText(payload.artist, 255),
genre: asCleanText(payload.genre, 120),
platform: asCleanText(payload.platform, 120),
description: asCleanText(payload.description, 1000),
tags: asCleanText(payload.tags, 1000),
lyrics: asCleanText(payload.lyrics, 1200),
vibe: asCleanText(payload.vibe, 200),
};

const hasUsefulStructuredFields = Object.values(fields).some(Boolean);
if (!hasUsefulStructuredFields) return '';

return [
'You are an expert music marketing assistant.',
'Generate SEO metadata for a song as strict JSON with keys: title, description, tags.',
`Platform: ${fields.platform || 'General'}`,
`Current title: ${fields.title || 'Untitled'}`,
`Artist: ${fields.artist || 'Unknown artist'}`,
`Genre: ${fields.genre || 'Unknown genre'}`,
fields.vibe ? `Vibe: ${fields.vibe}` : null,
fields.description ? `Context description: ${fields.description}` : null,
fields.tags ? `Existing tags/context: ${fields.tags}` : null,
fields.lyrics ? `Lyrics excerpt/context: ${fields.lyrics}` : null,
'Keep title concise, description platform-friendly, and tags comma-separated.',
].filter(Boolean).join('\n');
}

app.post('/api/generate-seo', requireAuth, async (req, res) => {
const { promptText } = req.body;
if (!promptText || typeof promptText !== 'string' || promptText.length > 4000) {
return res.status(400).json({ error: 'Invalid prompt' });
const promptText = buildSeoPrompt(req.body);
if (!promptText) {
return res.status(400).json({ error: 'Invalid prompt payload. Provide promptText or useful SEO fields.' });
}
const apiKey = process.env.GEMINI_API_KEY;
if (!apiKey) return res.status(500).json({ error: 'GEMINI_API_KEY not configured' });
Expand Down Expand Up @@ -387,7 +425,19 @@ app.post('/api/generate-seo', requireAuth, async (req, res) => {
);
if (!response.ok) throw new Error(`Gemini error ${response.status}: ${await response.text()}`);
const data = await response.json();
res.json(JSON.parse(data?.candidates?.[0]?.content?.parts?.[0]?.text || '{}'));
const rawText = data?.candidates?.[0]?.content?.parts?.[0]?.text || '{}';
let parsed;
try {
parsed = JSON.parse(rawText);
} catch {
return res.status(502).json({ error: 'Malformed JSON returned by Gemini' });
}

res.json({
title: typeof parsed?.title === 'string' ? parsed.title : '',
description: typeof parsed?.description === 'string' ? parsed.description : '',
tags: typeof parsed?.tags === 'string' ? parsed.tags : '',
});
} catch (err) {
console.error('Gemini proxy error:', err);
res.status(500).json({ error: err.message });
Expand Down
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