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Build ChatGPT 3.0 With Next Js, React Js, OpenAI and Web3.0


In the ever-evolving landscape of web development, integrating cutting-edge technologies is crucial to stay ahead. In this tutorial, we will embark on a journey to build ChatGPT 3.0 using Next.js, React.js, OpenAI, and incorporating elements of Web3.0 for enhanced functionality and user experience.

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ChatGPT, powered by OpenAI's GPT-3.5, has revolutionized conversational AI. By combining it with the dynamic and fast-paced development frameworks like Next.js and React.js, we can create a highly responsive and interactive chat application. Additionally, leveraging Web3.0 principles can add decentralization and security to our application.

Prerequisites

Before diving into the development process, ensure you have the following tools and technologies installed:

Node.js and npm

Next.js

React.js

OpenAI API key

MetaMask or any Ethereum-compatible wallet for Web3.0 integration

Setting up the Project

Let's start by creating a new Next.js project. Open your terminal and run the following commands:

bash

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npx create-next-app chatgpt-3.0

cd chatgpt-3.0

Now, install the required dependencies:

bash

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npm install axios react-query

OpenAI Integration

Obtain your OpenAI API key from the OpenAI platform. Create a .env.local file in the root directory of your project and add the following:

dotenv

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OPENAI_API_KEY=your_api_key_here

Next, create a utility function to interact with the OpenAI API. In the utils directory, create a file named openai.js:

javascript

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// utils/openai.js

import axios from 'axios';

const openai = axios.create({

  baseURL: 'https://api.openai.com/v1',

  headers: {

    'Content-Type': 'application/json',

    'Authorization': `Bearer ${process.env.OPENAI_API_KEY}`,

  },

});

export default openai;

React Components

Now, let's create the necessary React components. In the components directory, add a file named Chat.js:

javascript

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// components/Chat.js

import { useState } from 'react';

const Chat = () => {

  const [input, setInput] = useState('');

  const [messages, setMessages] = useState([]);

  const handleSendMessage = async () => {

    // Implement OpenAI API call here

  };

  return (

    <div>

      <div>

        {messages.map((msg, index) => (

          <div key={index}>{msg}</div>

        ))}

      </div>

      <div>

        <input

          type="text"

          value={input}

          onChange={(e) => setInput(e.target.value)}

        />

        <button onClick={handleSendMessage}>Send</button>

      </div>

    </div>

  );

};

export default Chat;

OpenAI API Call

In the Chat.js component, we need to make an API call to OpenAI when the user sends a message. Update the handleSendMessage function:

javascript

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// components/Chat.js

import { useState } from 'react';

import openai from '../utils/openai';

const Chat = () => {

  // ... (previous code)

  const handleSendMessage = async () => {

    try {

      const response = await openai.post('/chat/completions', {

        model: 'text-davinci-003',

        messages: [{ role: 'system', content: 'You are a helpful assistant.' }, { role: 'user', content: input }],

      });

      const newMessages = [...messages, input, response.data.choices[0].message.content];

      setMessages(newMessages);

      setInput('');

    } catch (error) {

      console.error('OpenAI API error:', error);

    }

  };

  // ... (remaining code)

};

Testing OpenAI Integration

You can now test the OpenAI integration by adding the Chat component to the index.js file in the pages directory:

javascript

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// pages/index.js

import Chat from '../components/Chat';

const Home = () => {

  return (

    <div>

      <h1>ChatGPT 3.0 with Next.js, React.js, OpenAI, and Web3.0</h1>

      <Chat />

    </div>

  );

};

export default Home;

Run your Next.js development server:

bash

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npm run dev

Visit http://localhost:3000 in your browser and start testing the chat functionality powered by OpenAI.

Web3.0 Integration

To incorporate Web3.0 principles into our application, we'll use Ethereum-based smart contracts and MetaMask for wallet interactions. This step assumes you have basic knowledge of Ethereum development.

Smart Contract

Create a new directory named contracts and add a simple smart contract in a file named ChatContract.sol:

solidity

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// contracts/ChatContract.sol

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

contract ChatContract {

    event MessageSent(address indexed sender, string message);

    function sendMessage(string memory message) public {

        emit MessageSent(msg.sender, message);

    }

}

Deploying Smart Contract

Deploy the smart contract to a local blockchain using tools like Ganache or deploy it to a public testnet. Make sure to note the deployed contract address.

Web3.js Integration

Install the required packages:

bash

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npm install web3 @openzeppelin/contracts

Create a new utility file named web3.js in the utils directory:

javascript

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// utils/web3.js

import Web3 from 'web3';

let web3;

if (typeof window !== 'undefined' && typeof window.ethereum !== 'undefined') {

  // Use MetaMask provider

  web3 = new Web3(window.ethereum);

  window.ethereum.enable();

} else {

  // Fallback to local Ganache provider

  const provider = new Web3.providers.HttpProvider('http://localhost:7545');

  web3 = new Web3(provider);

}

export default web3;

React Web3 Component

Create a new component named Web3.js in the components directory:

javascript

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// components/Web3.js

import { useEffect, useState } from 'react';

import web3 from '../utils/web3';

const Web3Component = () => {

  const [account, setAccount] = useState(null);

  useEffect(() => {

    const loadAccount = async () => {

      const accounts = await web3.eth.getAccounts();

      setAccount(accounts[0]);

    };

    loadAccount();

  }, []);

  return (

    <div>

      {account ? (

        <p>Connected Account: {account}</p>

      ) : (

        <p>Connect your MetaMask wallet to interact with the decentralized features.</p>

      )}

    </div>

  );

};

export default Web3Component;

Integrating Web3 Component

Update the index.js file to include the Web3Component:

javascript

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// pages/index.js

import Chat from '../components/Chat';

import Web3Component from '../components/Web3';

const Home = () => {

  return (

    <div>

      <h1>ChatGPT 3.0 with Next.js, React.js, OpenAI, and Web3.0</h1>

      <Web3Component />

      <Chat />

    </div>

  );

};

export default Home;

Conclusion

Congratulations! You have successfully built a ChatGPT 3.0 application using Next.js, React.js, OpenAI, and integrated Web3.0 principles for decentralized features. This project showcases the seamless combination of powerful AI, modern web development frameworks, and emerging blockchain technologies. Feel free to explore further enhancements, such as adding user authentication, improving the UI/UX, or extending the smart contract functionality. Happy coding!

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