if (!response.ok) {
 const errorData = await response.json().catch(() => ({ message: response.statusText }));
 console.error('Gemini API error:', errorData);
 port.postMessage({ error: `Gemini API error: ${errorData.error?.message || errorData.message || 'Unknown error'}`, done: true, session });
 return;
}

// Construct the request payload
// This is a placeholder structure and needs to be verified against Gemini API documentation
const payload = {
 contents: [{
 parts: [{
 text: question,
 }],
 }],
 // generationConfig: { // Optional: configure temperature, maxOutputTokens, etc.
 // temperature: config.temperature,
 // maxOutputTokens: config.maxResponseTokenLength,
 // },
 // safetySettings: [ // Optional: configure safety settings
 // { category: 'HARM_CATEGORY_HARASSMENT', threshold: 'BLOCK_MEDIUM_AND_ABOVE' },
 // { category: 'HARM_CATEGORY_HATE_SPEECH', threshold: 'BLOCK_MEDIUM_AND_ABOVE' },
 // { category: 'HARM_CATEGORY_SEXUALLY_EXPLICIT', threshold: 'BLOCK_MEDIUM_AND_ABOVE' },
 // { category: 'HARM_CATEGORY_DANGEROUS_CONTENT', threshold: 'BLOCK_MEDIUM_AND_ABOVE' },
 // ],
};
const response = await fetch(`${GEMINI_API_ENDPOINT}?key=${apiKey}`, {
 method: 'POST',
 headers: {
 'Content-Type': 'application/json',
 },
 body: JSON.stringify(payload),
});
if (!response.ok) {
 const errorData = await response.json().catch(() => ({ message: response.statusText }));
 console.error('Gemini API error:', errorData);
 port.postMessage({ error: `Gemini API error: ${errorData.error?.message || errorData.message || 'Unknown error'}`, done: true, session });
 return;
}
const responseData = await response.json();
// Extract the answer from the responseData
// This is a placeholder and needs to be verified against actual Gemini API response structure
// Expected structure: responseData.candidates[0].content.parts[0].text
let answer = 'No response from Gemini API.';
if (responseData.candidates && responseData.candidates[0] && responseData.candidates[0].content && responseData.candidates[0].content.parts && responseData.candidates[0].content.parts[0]) {
 answer = responseData.candidates[0].content.parts[0].text;
} else {
 console.error('Unexpected Gemini API response structure:', responseData);
}

const payload = {
 contents: [{
 parts: [{
 text: question,
 }],
 }],
 // generationConfig: { // Optional: configure temperature, maxOutputTokens, etc.
 // temperature: config.temperature,
 // maxOutputTokens: config.maxResponseTokenLength,
 // },
 // safetySettings: [ // Optional: configure safety settings
 // { category: 'HARM_CATEGORY_HARASSMENT', threshold: 'BLOCK_MEDIUM_AND_ABOVE' },
 // { category: 'HARM_CATEGORY_HATE_SPEECH', threshold: 'BLOCK_MEDIUM_AND_ABOVE' },
 // { category: 'HARM_CATEGORY_SEXUALLY_EXPLICIT', threshold: 'BLOCK_MEDIUM_AND_ABOVE' },
 // { category: 'HARM_CATEGORY_DANGEROUS_CONTENT', threshold: 'BLOCK_MEDIUM_AND_ABOVE' },
 // ],
};