sendMessage method

Future<Map<String, dynamic>> sendMessage(String message)

Implementation

Future<Map<String, dynamic>> sendMessage(String message) async {
  String systemMessage = """
You are a helpful navigation assistant for a mobile app. Based on the user's input and the available screens, suggest the most appropriate screen. If the user's request doesn't match any available screen, provide a friendly message explaining that you couldn't find a matching screen, possible reasons why, and ask the user if they could rephrase or provide more details.

Available screens: ${RouteDataProvider.getAllRouteNames().map((name) => "- $name: ${RouteDataProvider.getRouteDescription(name)}").join("\n")}


Please respond in the following JSON format:

{
"found": true/false,
"route_name": "name of the route (if found, else empty string)",
"message": "your message to the user"
}

If a screen is found:
- Set "found" to true.
- Provide the "route_name".
- Include a message like "I found the [route_name] screen for you. This Screen is [Route Description]"

If no matching screen is found:
- Set "found" to false.
- Set "route_name" to an empty string.
- Include a message that explains you couldn't find a matching screen, possible reasons, and politely ask the user to rephrase or provide more details. For example, "I'm sorry, I couldn't find a screen matching your request. Could you please rephrase or provide more details?"

Make sure your response is in valid JSON format without any additional text.
""";

  final response = await http.post(
    Uri.parse('https://api.openai.com/v1/chat/completions'),
    headers: {
      'Content-Type': 'application/json; charset=utf-8',
      'Authorization': 'Bearer $apiKey',
    },
    body: jsonEncode({
      'model': gptModel.modelName,
      'messages': [
        {
          'role': 'system',
          'content': systemMessage,
        },
        {'role': 'user', 'content': message},
      ],
      'temperature': 0.7,
    }),
  );

  if (response.statusCode == 200) {
    final data = jsonDecode(utf8.decode(response.bodyBytes));
    final content = data['choices'][0]['message']['content'].trim();

    try {
      // Parse the GPT response as JSON
      final result = jsonDecode(content) as Map<String, dynamic>;
      return result;
    } catch (e) {
      throw Exception('Invalid JSON response from GPT: $e');
    }
  } else {
    throw Exception('Failed to communicate with GPT');
  }
}