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fix: corrige geracao de imagens do Gemini usando compatibilidade OpenAI no Google AI Studio (generativelanguage) e adicionando novos modelos no frontend
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This commit is contained in:
Sidney 2026-07-17 22:31:31 -03:00
parent 3a953a7e41
commit 85b43e6608
2 changed files with 48 additions and 27 deletions
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8
manager/components/Exams.tsx
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@ -40,7 +40,7 @@ const Exams: React.FC<ExamsProps> = ({ data, updateData }) => {
openrouterModel: data.aiConfig?.openrouterModel || 'google/gemini-2.5-flash',
activeImageProvider: data.aiConfig?.activeImageProvider || 'gemini',
openaiImageModel: data.aiConfig?.openaiImageModel || 'dall-e-3',
geminiImageModel: data.aiConfig?.geminiImageModel || 'imagen-3.0-generate-002'
geminiImageModel: data.aiConfig?.geminiImageModel || 'gemini-2.5-flash-image'
});
const [dynamicModels, setDynamicModels] = useState<{
@ -93,7 +93,7 @@ const Exams: React.FC<ExamsProps> = ({ data, updateData }) => {
openrouterModel: data.aiConfig?.openrouterModel || 'google/gemini-2.5-flash',
activeImageProvider: data.aiConfig?.activeImageProvider || 'gemini',
openaiImageModel: data.aiConfig?.openaiImageModel || 'dall-e-3',
geminiImageModel: data.aiConfig?.geminiImageModel || 'imagen-3.0-generate-002'
geminiImageModel: data.aiConfig?.geminiImageModel || 'gemini-2.5-flash-image'
});
setShowAIConfigModal(true);
};
@ -1467,7 +1467,9 @@ const Exams: React.FC<ExamsProps> = ({ data, updateData }) => {
onChange={e => setAiForm({ ...aiForm, geminiImageModel: e.target.value })}
className="w-full px-4 py-3 bg-slate-50 border border-slate-200 rounded-xl focus:ring-2 focus:ring-indigo-500 focus:outline-none transition-all font-bold text-slate-700 text-sm"
>
<option value="imagen-3.0-generate-002">Imagen 3.0 Generate 002 (Padrão)</option>
<option value="gemini-2.5-flash-image">Gemini 2.5 Flash Image (Recomendado)</option>
<option value="gemini-3.1-flash-image">Gemini 3.1 Flash Image (Mais Recente)</option>
<option value="imagen-3.0-generate-002">Imagen 3.0 (Legado)</option>
</select>
</div>
)}

67
manager/server.selfhosted.js
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@ -1661,43 +1661,62 @@ app.post('/api/ai/generate-image', async (req, res) => {
imageUrl = resJson.data?.[0]?.url;
}
} else {
// Usar Google Gemini Imagen 3
const geminiImageModel = aiConfig.geminiImageModel || 'imagen-3.0-generate-002';
const imagenUrl = `https://generativelanguage.googleapis.com/v1beta/models/${geminiImageModel}:predict?key=${apiKey}`;
// Usar Google Gemini Imagen via OpenAI Compatibility Layer
const geminiImageModel = aiConfig.geminiImageModel || 'gemini-2.5-flash-image';
const imagenUrl = `https://generativelanguage.googleapis.com/v1beta/openai/images/generations?key=${apiKey}`;
const payload = {
instances: [
{
prompt: `Ilustração educativa flat vector sobre: ${prompt}`
}
],
parameters: {
sampleCount: 1,
aspectRatio: "1:1",
outputMimeType: "image/jpeg"
}
prompt: `Ilustração educativa flat vector sobre: ${prompt}`,
n: 1,
size: '1024x1024',
model: geminiImageModel
};
const response = await fetch(imagenUrl, {
let response = await fetch(imagenUrl, {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify(payload)
});
// Se der 404, tentar com o modelo gemini-2.5-flash-image de fallback
if (!response.ok && response.status === 404 && geminiImageModel !== 'gemini-2.5-flash-image') {
console.warn(`[Gemini Imagen] Modelo ${geminiImageModel} retornou 404, tentando gemini-2.5-flash-image de fallback...`);
payload.model = 'gemini-2.5-flash-image';
response = await fetch(imagenUrl, {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify(payload)
});
}
// Se der 404 novamente, tentar com gemini-3.1-flash-image
if (!response.ok && response.status === 404 && payload.model !== 'gemini-3.1-flash-image') {
console.warn(`[Gemini Imagen] Tentando gemini-3.1-flash-image de fallback...`);
payload.model = 'gemini-3.1-flash-image';
response = await fetch(imagenUrl, {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify(payload)
});
}
// Fallback final para imagen-3.0-generate-002 se as flash image falharem
if (!response.ok && response.status === 404 && payload.model !== 'imagen-3.0-generate-002') {
console.warn(`[Gemini Imagen] Tentando imagen-3.0-generate-002 de fallback final...`);
payload.model = 'imagen-3.0-generate-002';
response = await fetch(imagenUrl, {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify(payload)
});
}
if (!response.ok) {
const errText = await response.text();
throw new Error(`Gemini Imagen retornou erro: ${errText}`);
throw new Error(`Gemini Imagen retornou erro: ${response.status} - ${errText}`);
}
const resJson = await response.json();
const base64ImageBytes = resJson.predictions?.[0]?.bytesBase64Encoded;
if (!base64ImageBytes) {
throw new Error('Retorno vazio da API Imagen do Gemini');
}
const imageBuffer = Buffer.from(base64ImageBytes, 'base64');
const { uploadExamImage } = await import('./services/storage.js');
const savedUrl = await uploadExamImage(imageBuffer, 'image/jpeg');
return res.json({ url: savedUrl });
imageUrl = resJson.data?.[0]?.url;
}
if (!imageUrl) {