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createAndManageOffer.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" href="tutorial.css">
<title>Creating and Managing Offers</title>
</head>
<body>
<header id="main-header">
<nav id="navbar">
<h1><a href="index.html"> ← Back to Home</a></h1>
<ul>
<li class="nav-link"><a href="#introduction">Introduction</a></li>
<li class="nav-link"><a href="#prerequisites">Prerequisites</a></li>
<li class="nav-link"><a href="#step1">Step 1: Set Up the Project</a></li>
<li class="nav-link"><a href="#step2">Step 2: Load the Stellar SDK and Configure Accounts</a></li>
<li class="nav-link"><a href="#step3">Step 3: Build and Submit the Offer</a></li>
<li class="nav-link"><a href="#step5">Step 4: Run the Script</a></li>
<li class="nav-link"><a href="#Conclusion">Conclusion</a></li>
</ul>
</nav>
</header>
<main id="main-doc">
<section class="logo">
<h1>Stellar Dev Guide</h1>
</section>
<section class="tutname">
<h1> Tutorial:- Creating and Managing Offers</h1>
</section>
<section class="main-section" id="introduction">
<header>Introduction</header>
<article class="main-article">
<p>Stellar allows you to create offers to buy or sell assets. This tutorial will guide you through creating and managing offers using the Stellar SDK for JavaScript.</p>
</article>
</section>
<section class="main-section" id="prerequisites">
<header>Prerequisites</header>
<article class="main-article">
<p>Ensure you have:</p>
<ul>
<li>Node.js installed.</li>
<li>A text editor or IDE (like VSCode).</li>
<li>Basic knowledge of JavaScript.</li>
<li>A funded Stellar account with custom assets (refer to the first tutorial and asset creation tutorial).</li>
</ul>
</article>
</section>
<section class="main-section" id="step1">
<header>Step 1: Set Up the Project</header>
<article class="main-article">
<p>First, create a new project directory and install the Stellar SDK:</p>
<code>
mkdir stellar-custom-asset <br>
cd stellar-custom-asset<br>
npm init -y<br>
npm install stellar-sdk<br>
</code>
</article>
</section>
<section class="main-section" id="step2">
<header>Step 2: Load the Stellar SDK and Configure Accounts</header>
<article class="main-article">
<p>Create a file named createOffer.js and add the following code:</p>
<code>
const StellarSdk = require('stellar-sdk');<br>
const server = new StellarSdk.Server('https://horizon-testnet.stellar.org');<br>
<br>
// Seller's keys<br>
const sellerKeys = StellarSdk.Keypair.fromSecret('SELLER_SECRET_KEY');<br>
<br>
// Asset details<br>
const sellingAsset = new StellarSdk.Asset('MYTOKEN', sellerKeys.publicKey());<br>
const buyingAsset = StellarSdk.Asset.native(); // Buying XLM<br>
const amount = '100'; // Amount of MYTOKEN to sell<br>
const price = '0.5'; // Price of 1 MYTOKEN in XLM<br>
</code>
<p>Replace SELLER_SECRET_KEY with the secret key of your seller account and adjust the asset details as needed.</p>
</article>
</section>
<section class="main-section" id="step3">
<header>Step 3: Build and Submit the Offer</header>
<article class="main-article">
<p>Add the following code to create and submit an offer:</p>
<code>
async function createOffer() { <br>
try { <br>
const account = await server.loadAccount(sellerKeys.publicKey()); <br>
<br>
const transaction = new StellarSdk.TransactionBuilder(account, { <br>
fee: StellarSdk.BASE_FEE, <br>
networkPassphrase: StellarSdk.Networks.TESTNET, <br>
}) <br>
<br>
.addOperation(StellarSdk.Operation.manageSellOffer({ <br>
selling: sellingAsset, <br>
buying: buyingAsset, <br>
amount: amount, <br>
price: price, <br>
})) <br>
.setTimeout(30) <br>
.build(); <br>
<br>
transaction.sign(sellerKeys); <br>
<br>
const transactionResult = await server.submitTransaction(transaction); <br>
console.log('Offer created successfully!', transactionResult); <br>
} <br>
catch (error) { <br>
console.error('Error!', error); <br>
} <br>
} <br>
<br>
createOffer(); <br>
</code>
<p>This script builds and submits an offer to sell MYTOKEN for XLM at a specified price.</p>
</article>
</section>
<section class="main-section" id="step4">
<header>Step 4: Run the Script</header>
<article class="main-article">
<p>Run the script using Node.js:</p>
<code>
node createOffer.js
</code>
<p>If successful, you'll see a message indicating the offer was created successfully along with the transaction details.</p>
</article>
</section>
<section class="main-section" id="Conclusion">
<header>Conclusion</header>
<article class="main-article">
<p>You've successfully created an offer on the Stellar network using the Stellar SDK for JavaScript. You can modify the script to manage existing offers, adjust prices, or create offers for different assets. For more details on offers, check out the Stellar Offers documentation.</p>
</article>
</section>
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