chat_gpt_sdk 3.1.3

create chat bot and other bot with ChatGPT SDK Support GPT-4 , 3.5 and SSE Generate Prompt (Stream)

example/lib/main.dart

import 'dart:async';
import 'dart:math';
import 'package:chat_gpt_sdk/chat_gpt_sdk.dart';
import 'package:example/constants.dart';
import 'package:flutter/material.dart';
import 'package:material_buttonx/materialButtonX.dart';

void main() => runApp(const MyApp());

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    return const MaterialApp(
      home: TranslateScreen(),
    );
  }
}

class TranslateScreen extends StatefulWidget {
  const TranslateScreen({super.key});
  @override
  State<TranslateScreen> createState() => _TranslateScreenState();
}

class _TranslateScreenState extends State<TranslateScreen> {
  /// text controller
  final _txtWord = TextEditingController();

  late OpenAI openAI;

  Future<CompleteResponse?>? _translateFuture;
  void _translateEngToThai() async {
    final request = CompleteText(
        prompt: translateEngToThai(word: _txtWord.text.toString()),
        maxTokens: 200,
        model: Gpt3TurboInstruct());

    setState(() {
      _translateFuture = openAI.onCompletion(request: request);
    });
  }

  ///parameter name is require
  void gptFunctionCalling() async {
    final request = ChatCompleteText(
      messages: [
        Messages(
                role: Role.user,
                content: "What is the weather like in Boston?",
                name: "get_current_weather")
            .toJson(),
      ],
      maxToken: 200,
      model: Gpt41106PreviewChatModel(),
      tools: [
        {
          "type": "function",
          "function": {
            "name": "get_current_weather",
            "description": "Get the current weather in a given location",
            "parameters": {
              "type": "object",
              "properties": {
                "location": {
                  "type": "string",
                  "description": "The city and state, e.g. San Francisco, CA"
                },
                "unit": {
                  "type": "string",
                  "enum": ["celsius", "fahrenheit"]
                }
              },
              "required": ["location"]
            }
          }
        }
      ],
      toolChoice: 'auto',
    );

    ChatCTResponse? response = await openAI.onChatCompletion(request: request);
    debugPrint("$response");
  }

  void imageInput() async {
    final request = ChatCompleteText(
      messages: [
        {
          "role": "user",
          "content": [
            {"type": "text", "text": "What’s in this image?"},
            {
              "type": "image_url",
              "image_url": {
                "url":
                    "https://upload.wikimedia.org/wikipedia/commons/thumb/d/dd/Gfp-wisconsin-madison-the-nature-boardwalk.jpg/2560px-Gfp-wisconsin-madison-the-nature-boardwalk.jpg"
              }
            }
          ]
        }
      ],
      maxToken: 200,
      model: Gpt4VisionPreviewChatModel(),
    );

    ChatCTResponse? response = await openAI.onChatCompletion(request: request);
    debugPrint("$response");
  }

  void gpt4() async {
    final request = ChatCompleteText(messages: [
      Messages(role: Role.assistant, content: 'Hello!').toJson(),
    ], maxToken: 200, model: Gpt4ChatModel());

    await openAI.onChatCompletion(request: request);
  }

  @override
  void initState() {
    openAI = OpenAI.instance.build(
        token: kToken,
        baseOption: HttpSetup(
            receiveTimeout: const Duration(seconds: 20),
            connectTimeout: const Duration(seconds: 20)),
        enableLog: true);
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    var size = MediaQuery.of(context).size;
    return Scaffold(
      backgroundColor: Colors.white,
      body: SingleChildScrollView(
        child: Center(
          child: Padding(
            padding: const EdgeInsets.symmetric(vertical: 16.0),
            child: Column(
              crossAxisAlignment: CrossAxisAlignment.center,
              children: [
                /**
                 * title translate
                 */
                _titleCard(size),
                /**
                 * input card
                 * insert your text for translate to th.com
                 */
                _inputCard(size),

                /**
                 * card input translate
                 */
                _resultCard(size),
                /**
                 * button translate
                 */
                _btnTranslate()
              ],
            ),
          ),
        ),
      ),
      bottomNavigationBar: _navigation(size),
    );
  }

  Widget _btnTranslate() {
    return Row(
      mainAxisAlignment: MainAxisAlignment.end,
      children: [
        Padding(
          padding: const EdgeInsets.only(right: 16.0),
          child: MaterialButtonX(
            message: "Translate",
            height: 40.0,
            width: 130.0,
            color: Colors.blueAccent,
            icon: Icons.translate,
            iconSize: 18.0,
            radius: 46.0,
            onClick: _translateEngToThai,
          ),
        ),
      ],
    );
  }

  Widget _resultCard(Size size) {
    return FutureBuilder<CompleteResponse?>(
        future: _translateFuture,
        builder: (context, snapshot) {
          final text = snapshot.data?.choices.last.text;
          return Container(
            margin: const EdgeInsets.symmetric(vertical: 32.0),
            padding: const EdgeInsets.symmetric(horizontal: 16.0),
            alignment: Alignment.bottomCenter,
            width: size.width * .86,
            height: size.height * .3,
            decoration: heroCard,
            child: SingleChildScrollView(
              child: Column(
                children: [
                  Text(
                    text ?? 'Loading...',
                    style: const TextStyle(color: Colors.black, fontSize: 18.0),
                  ),
                  SizedBox(
                    width: size.width,
                    child: const Divider(
                      color: Colors.grey,
                      thickness: 1,
                    ),
                  ),
                  const Padding(
                    padding: EdgeInsets.all(12.0),
                    child: Row(
                      mainAxisAlignment: MainAxisAlignment.end,
                      children: [
                        Icon(
                          Icons.copy_outlined,
                          color: Colors.grey,
                          size: 22.0,
                        ),
                        Padding(
                          padding: EdgeInsets.symmetric(horizontal: 8.0),
                          child: Icon(
                            Icons.delete_forever,
                            color: Colors.grey,
                            size: 22.0,
                          ),
                        )
                      ],
                    ),
                  )
                ],
              ),
            ),
          );
        });
  }

  Padding _navigation(Size size) {
    return Padding(
      padding: const EdgeInsets.symmetric(vertical: 16.0, horizontal: 18.0),
      child: Container(
        width: size.width * .8,
        height: size.height * .06,
        decoration: heroNav,
        child: Row(
          mainAxisAlignment: MainAxisAlignment.spaceAround,
          children: [
            Container(
              padding: const EdgeInsets.all(4.0),
              decoration: BoxDecoration(
                  color: Colors.indigoAccent,
                  borderRadius: BorderRadius.circular(50.0)),
              child: const Icon(
                Icons.translate,
                color: Colors.white,
                size: 22.0,
              ),
            ),
            const Icon(
              Icons.record_voice_over_outlined,
              color: Colors.indigoAccent,
              size: 22.0,
            ),
            const Icon(
              Icons.favorite,
              color: Colors.indigoAccent,
              size: 22.0,
            ),
            const Icon(
              Icons.person,
              color: Colors.indigoAccent,
              size: 22.0,
            )
          ],
        ),
      ),
    );
  }

  Widget _titleCard(Size size) {
    return Container(
      margin: const EdgeInsets.symmetric(vertical: 32.0),
      width: size.width * .86,
      height: size.height * .08,
      decoration: heroCard,
      child: Row(
        mainAxisAlignment: MainAxisAlignment.spaceAround,
        children: [
          Row(
            children: [
              ClipRRect(
                borderRadius: BorderRadius.circular(30),
                child: Image.network(
                  "https://www.clipartmax.com/png/middle/200-2009207_francais-english-italiano-english-flag-icon-flat.png",
                  fit: BoxFit.cover,
                  width: 30.0,
                  height: 30.0,
                ),
              ),
              const Padding(
                padding: EdgeInsets.symmetric(horizontal: 4.0),
                child: Text(
                  "Eng",
                  style: TextStyle(color: Colors.grey, fontSize: 12.0),
                ),
              ),
              Transform.rotate(
                angle: -pi / 2,
                child: const Icon(
                  Icons.arrow_back_ios_new,
                  size: 16.0,
                  color: Colors.grey,
                ),
              )
            ],
          ),
          const Padding(
            padding: EdgeInsets.symmetric(horizontal: 12.0),
            child: Icon(
              Icons.swap_horiz_outlined,
              color: Colors.grey,
              size: 22.0,
            ),
          ),
          Row(
            children: [
              ClipRRect(
                borderRadius: BorderRadius.circular(30),
                child: Image.network(
                  "https://cdn-icons-png.flaticon.com/512/197/197452.png",
                  fit: BoxFit.cover,
                  width: 30.0,
                  height: 30.0,
                ),
              ),
              const Padding(
                padding: EdgeInsets.symmetric(horizontal: 4.0),
                child: Text(
                  "Thai",
                  style: TextStyle(color: Colors.grey, fontSize: 12.0),
                ),
              ),
              Transform.rotate(
                angle: -pi / 2,
                child: const Icon(
                  Icons.arrow_back_ios_new,
                  size: 16.0,
                  color: Colors.grey,
                ),
              )
            ],
          )
        ],
      ),
    );
  }

  Widget _inputCard(Size size) {
    return Container(
      padding: const EdgeInsets.symmetric(horizontal: 16.0),
      alignment: Alignment.bottomCenter,
      width: size.width * .86,
      height: size.height * .25,
      decoration: heroCard,
      child: SingleChildScrollView(
        child: Column(
          children: [
            TextField(
              decoration: const InputDecoration(
                  border: InputBorder.none,
                  enabledBorder: InputBorder.none,
                  disabledBorder: InputBorder.none),
              controller: _txtWord,
              maxLines: 6,
              textInputAction: TextInputAction.newline,
              keyboardType: TextInputType.multiline,
            ),
            SizedBox(
              width: size.width,
              child: const Divider(
                color: Colors.grey,
                thickness: 1,
              ),
            ),
            const Padding(
              padding: EdgeInsets.all(12.0),
              child: Row(
                mainAxisAlignment: MainAxisAlignment.end,
                children: [
                  Icon(
                    Icons.copy_outlined,
                    color: Colors.grey,
                    size: 22.0,
                  ),
                  Padding(
                    padding: EdgeInsets.symmetric(horizontal: 8.0),
                    child: Icon(
                      Icons.record_voice_over_outlined,
                      color: Colors.grey,
                      size: 22.0,
                    ),
                  )
                ],
              ),
            )
          ],
        ),
      ),
    );
  }
}