Building a Chatbot with React and ChatGPT

Introduction

In this tutorial, we’ll walk through the process of creating a chatbot using React and OpenAI’s ChatGPT. ChatGPT is a powerful language model that can be used to build interactive and dynamic chatbots.

Prerequisites

• Basic knowledge of React
• Node.js and npm installed on your system
• An OpenAI API key (sign up here if you haven’t already)

Step 1: Set Up Your React App

npx create-react-app chatbot-app
cd chatbot-app
npm start

Step 2: Install OpenAI Package

npm install openai

Step 3: Create a Chat Component

// src/Chat.js

import React, { useState } from 'react';
import { OpenAIAPIKey } from './config'; // Create a file named 'config.js' with your OpenAI API key

const Chat = () => {
  const [messages, setMessages] = useState([]);
  const [input, setInput] = useState('');

  const sendMessage = async () => {
    setMessages([...messages, { text: input, user: 'user' }]);
    const response = await fetchMessage(input);
    setMessages([...messages, { text: response, user: 'bot' }]);
    setInput('');
  };

  const fetchMessage = async (input) => {
    const response = await fetch('https://api.openai.com/v1/engines/davinci/completions', {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json',
        'Authorization': `Bearer ${OpenAIAPIKey}`
      },
      body: JSON.stringify({
        prompt: `You: ${input}\nAI:`,
        max_tokens: 150
      })
    });
    const data = await response.json();
    return data.choices[0].text.trim();
  };

  return (
    <div>
      <div className="message-container">
        {messages.map((message, index) => (
          <div key={index} className={`message ${message.user}`}>
            {message.text}
          </div>
        ))}
      </div>
      <input
        type="text"
        value={input}
        onChange={(e) => setInput(e.target.value)}
        onKeyPress={(e) => e.key === 'Enter' && sendMessage()}
        placeholder="Type a message..."
      />
    </div>
  );
};

export default Chat;

Step 4: Configure OpenAI API

Create a config.js file in the src directory and add your OpenAI API key:

// src/config.js

export const OpenAIAPIKey = 'YOUR_API_KEY_HERE';

Step 5: Use the Chat Component

// src/App.js

import React from 'react';
import Chat from './Chat';

function App() {
  return (
    <div className="App">
      <h1>ChatGPT Chatbot</h1>
      <Chat />
    </div>
  );
}

export default App;

Step 6: Styling (Optional)

Feel free to add CSS to style your chat interface.

Conclusion

Congratulations! You’ve built a simple chatbot using React and ChatGPT. You can now further enhance and customize your chatbot based on your specific requirements.

Remember to handle errors and edge cases appropriately in a production environment. Happy coding!