A simple tool which lets you scrape twitter accounts and crosspost them to bluesky accounts! Comes with a CLI and a webapp for managing profiles! Works with images/videos/link embeds/threads.
fix: enforce per-image alt text output
+36
-11
+35
-9
src/ai-manager.ts
+35
-9
src/ai-manager.ts
···
47
47
switch (provider) {
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case 'gemini':
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// apiKey is guaranteed by check above
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-
return await callGemini(apiKey!, model || 'models/gemini-2.5-flash', buffer, mimeType, prompt);
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+
return normalizeAltTextOutput(
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+
await callGemini(apiKey!, model || 'models/gemini-2.5-flash', buffer, mimeType, prompt),
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+
);
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case 'openai':
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case 'custom':
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-
return await callOpenAICompatible(apiKey, model || 'gpt-4o', baseUrl, buffer, mimeType, prompt);
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+
return normalizeAltTextOutput(
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+
await callOpenAICompatible(apiKey, model || 'gpt-4o', baseUrl, buffer, mimeType, prompt),
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+
);
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case 'anthropic':
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// apiKey is guaranteed by check above
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-
return await callAnthropic(
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-
apiKey!,
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model || 'claude-3-5-sonnet-20241022',
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-
baseUrl,
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buffer,
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-
mimeType,
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-
prompt,
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+
return normalizeAltTextOutput(
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+
await callAnthropic(
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+
apiKey!,
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+
model || 'claude-3-5-sonnet-20241022',
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+
baseUrl,
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+
buffer,
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+
mimeType,
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+
prompt,
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+
),
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);
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default:
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console.warn(`[AI] ⚠️ Unknown provider: ${provider}`);
···
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'Write one alt text description (1-2 sentences).',
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'Describe only what is visible.',
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'Use context to identify people/places/objects if relevant for search.',
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'Describe only this image; ignore other images in the post.',
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'Return only the alt text with no labels, quotes, or options.',
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'No hashtags or emojis.',
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`Context: "${trimmed}"`,
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].join(' ');
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+
}
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+
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+
function normalizeAltTextOutput(output: string | undefined): string | undefined {
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+
if (!output) return undefined;
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+
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+
let cleaned = output.trim();
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+
if (!cleaned) return undefined;
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+
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+
cleaned = cleaned.replace(/^["'“”]+|["'“”]+$/g, '').trim();
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+
cleaned = cleaned.replace(/^(alt\s*text|description)\s*[:\-]\s*/i, '').trim();
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+
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const lines = cleaned.split(/\r?\n/).map((line) => line.trim()).filter(Boolean);
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+
if (lines.length > 0) cleaned = lines[0];
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+
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+
cleaned = cleaned.replace(/^option\s*\d+\s*[:\-]\s*/i, '').trim();
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+
cleaned = cleaned.replace(/^[\-\*\d\.\)]+\s*/g, '').trim();
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cleaned = cleaned.replace(/\s+/g, ' ').trim();
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+
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+
return cleaned || undefined;
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}
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async function callGemini(
+1
-2
src/index.ts
+1
-2
src/index.ts
···
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// Removed early dryRun continue to allow verifying logic
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-
const altTextContext = buildAltTextContext(tweet, tweetText, tweetMap);
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-
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let text = tweetText
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.replace(/&/g, '&')
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.replace(/</g, '<')
···
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if (!altText) {
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console.log(`[${twitterUsername}] 🤖 Generating alt text via Gemini...`);
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// Use original tweet text for context, not the modified/cleaned one
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+
const altTextContext = buildAltTextContext(tweet, tweetText, tweetMap);
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altText = await generateAltText(buffer, mimeType, altTextContext);
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if (altText) console.log(`[${twitterUsername}] ✅ Alt text generated: ${altText.substring(0, 50)}...`);
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}