generateWithChatGPT function

Future<String> generateWithChatGPT({ required String prompt, String promptPrefix = 'Tune this', bool shortReply = false, bool testWithoutKey = false, required ChatGPTModuleStrings gptModuleStrings, })

Generates a response using the ChatGPT API based on the provided prompt.

Parameters:

• prompt: The input prompt for generating a response.
• shortReply: If true, it will generate a 1-2 line reply. Default is false.
• testWithoutKey: If true, it will provide a static test response without using the actual API key. Default is false.
• forceEnableDebug: If true, debug logs will be printed on the debug console. Default is false.

Returns the generated answer. Throws an error message if the response is empty or an error occurs.

Implementation

Future<String> generateWithChatGPT({
  required String prompt,
  final String promptPrefix = 'Tune this',
  bool shortReply = false,
  bool testWithoutKey = false,
  required ChatGPTModuleStrings gptModuleStrings,
}) async {
  if (testWithoutKey) {
    //=========================================For Test Without Api==============================================
    ChatGPTAnswerResponseModel gptAnsResModel =
        ChatGPTAnswerResponseModel.fromJson(jsonDecode(jsonEncode({
      "id": "cmpl-6biNrkL5FlEhzIoGojdKPiRG6ZGN3",
      "object": "text_completion",
      "created": 1674446767,
      "model": chatGPTConfigGlobal.chatGPTModel,
      "choices": [
        {
          "index": 0,
          "message": {
            "role": "assistant",
            "content":
                "I am ChatGPT, a large language model trained by OpenAI, based on the GPT-4 architecture."
          },
          "logprobs": null,
          "finish_reason": "stop"
        }
      ],
      "usage": {"prompt_tokens": 7, "completion_tokens": 61, "total_tokens": 68}
    })));

    if (forceEnableDebug) {
      log('GPT ANSWER MODEL.VALUE.ID: ${gptAnsResModel.id}');
    }

    await 3.seconds.delay;
    if (gptAnsResModel.choices.isNotEmpty &&
        gptAnsResModel.choices.first.message.content.isNotEmpty) {
      if (forceEnableDebug) {
        log('GPT ANSWER  ${gptAnsResModel.choices.first.message.content}');
      }
      return gptAnsResModel.choices.first.message.content.trim();
    } else {
      throw gptModuleStrings.noDataFromChatGPT;
    }
    //=========================================Api==============================================
  } else {
    Map<String, String> header = {
      'Content-Type': 'application/json',
      'Authorization': 'Bearer $chatGPTAPIkey'
    };

    if (forceEnableDebug) log('CHAT GPT API HEADER: $header');

    Map<String, dynamic> jsonBodyData = chatGPTConfigGlobal.request ??
        {
          "model": chatGPTConfigGlobal.chatGPTModel,
          "messages": [
            {
              "role": "system",
              "content": "You are a helpful assistant.",
            },
            {
              "role": "user",
              "content":
                  "$promptPrefix $prompt${shortReply ? ", Please reply in 1-2 line only" : ""}",
            }
          ],
          "temperature": chatGPTConfigGlobal.temperature,
          "max_tokens": chatGPTConfigGlobal.maxTokens,
          "top_p": chatGPTConfigGlobal.topP,
          "frequency_penalty": chatGPTConfigGlobal.frequencyPenalty,
          "presence_penalty": chatGPTConfigGlobal.presencePenalty,
        };

    if (forceEnableDebug) {
      log('CHAT GPT API JSON BODY DATA: ${chatGPTConfigGlobal.request ?? jsonBodyData}');
    }

    if (prompt.isNotEmpty) {
      try {
        var response = await http.post(
            Uri.parse(chatGPTConfigGlobal.chatGPTAPIEndPoint),
            body: json.encode(jsonBodyData),
            headers: header);

        var jsonResponse = json.decode(response.body);

        if (forceEnableDebug) {
          log('getAnswerChatGPTApi JSON RESPONSE: $jsonResponse');
        }

        if (response.statusCode == HttpStatus.ok) {
          ChatGPTAnswerResponseModel gptAnsResModel =
              ChatGPTAnswerResponseModel.fromJson(jsonResponse);

          if (forceEnableDebug) {
            log('GPT ANSWER MODEL.VALUE.ID: ${gptAnsResModel.id}');
          }

          if (gptAnsResModel.choices.isNotEmpty &&
              gptAnsResModel.choices.first.message.content.isNotEmpty) {
            if (forceEnableDebug) {
              log('GPT ANSWER  ${gptAnsResModel.choices.first.message.content}');
            }
            return gptAnsResModel.choices.first.message.content.trim();
          } else {
            throw gptModuleStrings.noDataFromChatGPT;
          }
        } else {
          throw "${gptModuleStrings.errorCode}: ${response.statusCode} ${response.reasonPhrase.validate()}";
        }
      } catch (e) {
        if (forceEnableDebug) log('getAnswerChatGPT  E: $e');
        throw "${gptModuleStrings.chatGPTFunctionError}: ${e.toString()}";
      }
    } else {
      throw gptModuleStrings.pleaseEnterSomeText;
    }
  }
}