https://github.com/mederhoo-script/stellar-token-transfer/blob/main/project_tutorial.md
Tutorial: Building a Stellar Token Transfer Application with React

This tutorial will guide you through the process of creating a Stellar-based token transfer application using React. We’ll cover everything from setting up the development environment to deploying the application. Although we won't write any code here, you'll gain a clear understanding of the steps involved.

1. Setting Up the Project

a. Create a New React Project

To begin, you'll need to set up a React project. We’ll use Create React App, which simplifies the setup process and provides a solid foundation for your application.

• Create a Project Directory: Start by creating a directory for your project. You might name it something like stellar-token-transfer.
• Initialize the React App: Inside this directory, run a command to generate the React application structure. This command will create the basic files and folders you'll work with.

b. Install Dependencies

Your project will need some additional packages:

• Stellar SDK: This package will allow your app to interact with the Stellar blockchain.
• Axios: A library for making HTTP requests, which might be necessary for interacting with APIs.

You’ll install these packages through npm (Node Package Manager).

c. Set Up the Project Structure

Once your project is set up, you’ll organize it into different folders:

• Components Folder: This will hold all the React components, which are the building blocks of your user interface.
• Services Folder: This will contain logic related to Stellar, such as connecting to the network and handling transactions.
• App.js: This is the main component that ties everything together.

2. Issuing a Custom Token on Stellar

a. Understand the Process

In the Stellar network, issuing a custom token involves two main accounts:

• Issuing Account: The account that creates and issues the tokens.
• Distribution Account: The account that receives the tokens from the issuing account and distributes them to others.

b. Set Up Accounts

You’ll create these accounts on the Stellar testnet (a network used for testing). Each account will have its unique keypair, which includes a public key and a secret key.

c. Issuing the Token

To issue the token:

• Trustlines: First, the distribution account needs to establish trust with the issuing account by creating a trustline. This trustline allows the distribution account to hold the issued token.
• Send the Tokens: Once trust is established, you’ll send the tokens from the issuing account to the distribution account.

d. Logging the Transaction

It’s important to log the results of the transaction, such as the transaction hash, to verify everything went as planned.

3. Writing a Soroban Smart Contract

a. Introduction to Soroban

Soroban is a smart contract platform on Stellar. Smart contracts are scripts that run on the blockchain and can enforce the rules for token transfers.

b. Design the Contract

Your contract will handle token transfers by:

• Validating the Sender’s Balance: Ensuring that the sender has enough tokens to make the transfer.
• Executing the Transfer: Moving the tokens from the sender to the recipient.

c. Deploying the Contract

After writing the smart contract in Rust (a programming language), you’ll deploy it to the Stellar testnet. This will generate a contract ID, which you’ll use to interact with the contract from your React app.

4. Building the React Front End

a. Designing the User Interface

The React app will have a simple UI that allows users to:

• Input the Recipient’s Address: Where the tokens will be sent.
• Enter the Amount: The number of tokens to transfer.
• Submit the Transfer: Trigger the transaction on the Stellar network.

b. Connecting to Stellar

In the services folder, you’ll create functions that interact with the Stellar network:

• Connecting to the Testnet: Establish a connection to the Stellar testnet.
• Issuing Tokens: A function to handle the token issuance process.
• Invoking the Smart Contract: A function to call the Soroban smart contract and transfer tokens.

c. Handling Form Submission

When the user submits the form, the app will call the relevant service function to execute the token transfer. The application will also display transaction results or errors to the user.

5. Styling the Application

a. Basic CSS

You’ll add some basic styles to ensure that the application is visually appealing:

• Form Layout: Make sure the form is centered and easy to fill out.
• Responsive Design: Ensure that the UI adapts to different screen sizes.

6. Testing the Application

a. Local Testing

Before deploying, it’s important to test the application locally:

• Run the App: Start the React development server and interact with the UI.
• Test the Token Transfer: Perform a test transaction using the Stellar testnet to ensure that everything works as expected.
• Verify Transactions: Use Stellar's testnet explorer to confirm that the tokens were transferred successfully.

7. Deploying the Application

a. Deployment Options

You can deploy your React application to a hosting service like:

• GitHub Pages: A free service to host static websites.
• Vercel: A platform optimized for React apps that provides an easy deployment process.

b. Deployment Process

• GitHub Pages: You’ll configure your project to deploy the app to a GitHub repository.
• Vercel: You can deploy directly from the command line or integrate with your GitHub repository.

8. Optional Enhancements

a. Transaction History

To enhance the application, consider adding a section that displays a history of past transactions. This will make it easier for users to track their activities.

b. Additional Features

You could also add features like:

• Displaying Token Balances: Show the current balance of tokens for the user’s account.
• Account Creation: Allow users to create new Stellar accounts directly from the app.

9. Review and Optimization

a. Code Review

After completing the project, review the code to ensure it follows best practices. This includes checking for consistent formatting, proper error handling, and security considerations like not exposing secret keys.

b. UI Improvements

Make sure the UI is not only functional but also user-friendly. Test it on various devices to ensure it looks good and works well everywhere.

c. Final Testing

Before final deployment, do a thorough test of the entire application to catch any last-minute issues.

Conclusion

By following these steps, you’ll have a fully functional Stellar-based token transfer application built with React. This project not only introduces you to blockchain development but also helps you understand how to build and deploy modern web applications. Whether you’re new to blockchain or an experienced developer, this project provides a comprehensive guide to integrating blockchain with front-end technologies.

What I Created

I developed a Stellar-based token transfer application using React. The application allows users to issue and transfer custom tokens on the Stellar testnet, demonstrating how easily developers can integrate blockchain functionalities into a modern web application. This project supports the Stellar developer experience by providing a practical example of how to use Stellar SDK and Soroban smart contracts in a real-world scenario. Other developers can use this project as a foundation for building their own blockchain-based applications, whether for educational purposes or to kickstart a more complex project.

Journey

The idea for this project stemmed from a desire to explore the capabilities of the Stellar blockchain, particularly in the context of creating and managing custom tokens. I began by researching the Stellar SDK and Soroban smart contracts, which led me to develop a simple yet effective application that showcases the token issuance and transfer process.

Throughout the development, I focused on ensuring that the application was not only functional but also user-friendly and well-structured. One of the key challenges was integrating the blockchain logic with the React front end, which required careful consideration of asynchronous operations and error handling.

I’m particularly proud of how the project turned out, especially the seamless interaction between the front end and the blockchain. This experience deepened my understanding of the Stellar ecosystem and reinforced the importance of good coding practices, such as maintaining clean and modular code.

Moving forward, I hope to build upon this project by adding more advanced features, such as real-time balance updates, transaction history, and potentially expanding it to support multiple token types. This project has opened up new possibilities for me in blockchain development, and I’m excited to continue exploring this space.