getAnswer method

Future<String> getAnswer(String question)

Implementation

Future<String> getAnswer(String question) async {
  final url = Uri.parse(
    "https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-flash:generateContent?key=$apiKey",
  );

  final prompt = '''
You are an intelligent and friendly AI assistant named $botName. You are designed to have natural, human-like conversations. Be empathetic, calm, respectful, and informative. Adapt your tone based on the user's message:

- If they greet (e.g., "hi", "hello"), greet them back.
- If they sound upset or angry, respond kindly and try to calm them.
- If they ask a question, respond clearly and politely using the provided knowledge base.

Here is your knowledge base:
${jsonEncode(knowledgeBase)}

User: $question
Ace:
''';

  final body = jsonEncode({
    "contents": [
      {
        "parts": [
          {"text": prompt},
        ],
      },
    ],
  });

  final res = await http.post(
    url,
    headers: {'Content-Type': 'application/json'},
    body: body,
  );

  if (res.statusCode == 200) {
    final decoded = jsonDecode(res.body);
    return decoded['candidates'][0]['content']['parts'][0]['text'] ??
        'No answer';
  } else {
    return 'Error: ${res.statusCode}';
  }
}