generateResponse method

@override Future<String> generateResponse(String prompt, { List<String>? context, })

Generates a response from the LLM based on the given prompt.

prompt - The input prompt to send to the model. context - Optional list of context strings to prepend to the prompt.

Returns the generated text response.

Throws Exception if the request fails.

Implementation

@override
Future<String> generateResponse(
  String prompt, {
  List<String>? context,
}) async {
  final fullPrompt = context != null
      ? '${context.join('\n')}\n\n$prompt'
      : prompt;

  final url = Uri.parse(
    'https://generativelanguage.googleapis.com/v1beta/models/$modelName:generateContent',
  );

  final response = await HttpUtils.postWithRetry(
    url,
    headers: {'Content-Type': 'application/json', 'x-goog-api-key': apiKey},
    body: jsonEncode({
      'contents': [
        {
          'parts': [
            {'text': fullPrompt},
          ],
        },
      ],
    }),
    timeout: timeout,
  );

  if (response.statusCode == 200) {
    final data = jsonDecode(response.body);
    try {
      return data['candidates'][0]['content']['parts'][0]['text'] as String;
    } catch (e) {
      throw Exception('Error parsing Gemini response: $e');
    }
  } else {
    throw Exception(
      'Failed to generate response from Gemini: ${response.body}',
    );
  }
}