ChatGPT Powered Apps

What and why

Generative AI can provide data transformations and act as the backend for applications. OpenAI's ChatGPT is the current market leader and a good place to start learning how to build apps around Gen AI.

Meta's ReactJS provides an industry standard way of designing websites and webapps, so I'll offer this frontend code in React-- you can of course adapt it to Angular, Vue, Svelte, or any other library or framework that is built around JavaScript.

Baseline Template

import React, { useState } from 'react';

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

    const sendMessage = async () => {
        if (!input) return;

        // Add user message to the chat history
        const newMessages = [...messages, { role: 'user', content: input }];
        setMessages(newMessages);

        // Send the user input to the backend API
        const response = await fetch('https://your-backend-api-url.com/chat', {
            method: 'POST',
            headers: { 'Content-Type': 'application/json' },
            body: JSON.stringify({ prompt: input }),
        });
        const data = await response.json();

        // Add bot response to the chat history
        setMessages([...newMessages, { role: 'bot', content: data.reply }]);
        setInput(''); // Clear input field
    };

    return (
        <div className="chatbot-container">
            <div className="chat-history">
                {messages.map((message, index) => (
                    <div key={index} className={`message ${message.role}`}>
                        <span>{message.content}</span>
                    </div>
                ))}
            </div>
            <input
                type="text"
                value={input}
                onChange={(e) => setInput(e.target.value)}
                placeholder="Type a message..."
            />
            <button onClick={sendMessage}>Send</button>
        </div>
    );
};

export default ChatBot;

Things to Note:

• you will need to create a free account with ChatGPT to enable this level of custom utility

• the code above simply queries the ChatGPT service for a chat connection; it is extensible for many features, to include reviewing documents as seen in our demo Paralegal Document Review app

• this is the first half of a 2-part project: the backend code is described in the next guide

Check back here soon for the backend code!