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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>AlgoSigner dApp | Asset Opt-in</title>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bulma@0.9.0/css/bulma.min.css">
<link rel="shortcut icon" href="assets/favicon.ico" type="image/x-icon">
<link rel="stylesheet" href="//cdn.jsdelivr.net/gh/highlightjs/cdn-release@10.1.2/build/styles/tomorrow.min.css">
<script src="//cdn.jsdelivr.net/gh/highlightjs/cdn-release@10.1.2/build/highlight.min.js"></script>
<link rel="stylesheet" type="text/css" href="assets/style.css">
</head>
<body>
<nav class="navbar" role="navigation" aria-label="main navigation">
<div class="navbar-brand">
<a class="navbar-item" href="index.html"><img src="assets/logotype.png" height="28"></a>
</div>
<div class="navbar-menu">
<div class="navbar-start">
<a class="navbar-item" href="payment.html">Payment Txn</a>
<a class="navbar-item" href="asset-create.html">Asset Create Txn</a>
<a class="navbar-item" href="asset-optin.html"><u>Asset Opt-in Txn</u></a>
<a class="navbar-item" href="arcTransitionGuide.html">ARC Transition Guide</a>
</div>
<div class="navbar-end">
<a class="navbar-item" target="_blank" rel="noopener noreferrer" href="https://github.com/PureStake/algosigner/blob/develop/docs/dApp-integration.md">
Documentation
</a>
</div>
</div>
</nav>
<!-- SDKSETUP -->
<section class="section">
<div class="container">
<h1 class="title">
Clients Setup & Usage
<a class="button is-small is-pulled-right" target="_blank" rel="noopener noreferrer"
href="https://github.com/PureStake/algosigner-dapp-example/blob/master/asset-optin.html#L405-L426">
<span class="icon is-small">
<i class="fab fa-github"></i>
</span>
<span>See code on GitHub</span>
</a>
</h1>
<p class="subtitle">
Setup Algod and Indexer clients and fetch transactions parameters
</p>
<div class="columns">
<div class="column">
<pre><code class="js">
const algodServer = 'https://testnet-algorand.api.purestake.io/ps2';
const indexerServer = 'https://testnet-algorand.api.purestake.io/idx2';
const token = { 'X-API-Key': 'YOUR API KEY HERE' };
const port = '';
algodClient = new algosdk.Algodv2(token, algodServer, port);
indexerClient = new algosdk.Indexer(token, indexerServer, port);
algodClient.getTransactionParams().do()
.then(d => {
console.log(d);
txnParams = d;
})
.catch(e => {
console.error(e);
});
</code></pre>
<button class="button is-primary is-fullwidth" id="sdksetup">Run code</button>
</div>
<div class="column">
<pre><code class="JSON" id="sdk-setup">code snippet output</code></pre>
</div>
</div>
</div>
</section>
<!-- /SDKSETUP -->
<!-- ENABLE -->
<section class="section">
<div class="container">
<h1 class="title">
Enable account discovery
<a class="button is-small is-pulled-right" target="_blank" rel="noopener noreferrer" href="https://github.com/PureStake/algosigner-dapp-example/blob/master/asset-optin.html#L375-L403">
<span class="icon is-small">
<i class="fab fa-github"></i>
</span>
<span>See code on GitHub</span>
</a>
</h1>
<p class="subtitle">
Request from the user which accounts will be shared with the dApp
</p>
<div class="columns">
<div class="column">
<pre><code class="js">
<b>algorand</b>.enable({ genesisID: txnParams.genesisID })
.then((d) => {
console.log(d);
sharedAccounts = d.accounts;
})
.catch((e) => {
console.error(e);
});
</code></pre>
<button class="button is-primary is-fullwidth" id="enable">Run code</button>
</div>
<div class="column">
<pre><code class="JSON" id="enable-code">code snippet output</code></pre>
</div>
</div>
</div>
</section>
<!-- /ENABLE -->
<!-- ASSETS -->
<section class="section">
<div class="container">
<h1 class="title">
Get Assets from Indexer
<a class="button is-small is-pulled-right" target="_blank" rel="noopener noreferrer" href="https://github.com/PureStake/algosigner-dapp-example/blob/master/asset-optin.html#L428-L465">
<span class="icon is-small">
<i class="fab fa-github"></i>
</span>
<span>See code on GitHub</span>
</a>
</h1>
<p class="subtitle">
Query Indexer with the client to fetch TestNet assets
</p>
<div class="columns">
<div class="column">
<pre><code class="js">
const name = document.getElementById('name').value;
const limit = document.getElementById('limit').value;
indexerClient.searchForAssets().limit(limit).name(name).do()
.then((d) => {
console.log(d);
assetsList = d.assets;
})
.catch((e) => {
console.error(e);
});
</code></pre>
<button class="button is-primary is-fullwidth" id="assets">Run code</button>
</div>
<div class="column">
<div class="field">
<p class="control has-icons-left">
<input class="input" id="name" placeholder="Name">
<span class="icon is-small is-left">
<i class="fas fa-signature"></i>
</span>
</p>
</div>
<div class="field">
<p class="control has-icons-left">
<input class="input" id="limit" type="number" placeholder="Limit">
<span class="icon is-small is-left">
<i class="fas fa-list"></i>
</span>
</p>
</div>
<pre><code class="JSON" id="assets-code">code snippet output</code></pre>
</div>
</div>
</div>
</section>
<!-- /ASSETS -->
<!-- SIGN -->
<section class="section">
<div class="container">
<h1 class="title">
Sign Asset Opt-in Transaction
<a class="button is-small is-pulled-right" target="_blank" rel="noopener noreferrer"
href="https://github.com/PureStake/algosigner-dapp-example/blob/master/asset-optin.html#L467-L505">
<span class="icon is-small">
<i class="fab fa-github"></i>
</span>
<span>See code on GitHub</span>
</a>
</h1>
<p class="subtitle">
Ask the user to sign an asset opt-in transaction using the <code>signTxns</code> method
</p>
<div class="columns">
<div class="column">
<pre><code class="js">
unsignedTxn = algosdk.makeAssetTransferTxnWithSuggestedParamsFromObject({
from: document.getElementById('from').value,
to: document.getElementById('from').value,
assetIndex: +document.getElementById('asset').value,
note: <b>algorand.encoding</b>.stringToByteArray(document.getElementById('note').value),
amount: 0,
suggestedParams: {...txnParams}
});
console.log(unsignedTxn._getDictForDisplay());
// Use the provided library to make the transaction base64-encoded
let b64EncodedTxn = <b>algorand.encoding</b>.msgpackToBase64(unsignedTxn.toByte());
<b>algorand.signTxns</b>([{txn: b64EncodedTxn}])
.then((d) => {
console.log(d);
signedTxs = d;
})
.catch((e) => {
console.error(e);
});
</code></pre>
<button class="button is-primary is-fullwidth" id="sign">Run code</button>
</div>
<div class="column">
<div class="field">
<div class="control has-icons-left">
<div class="select is-fullwidth">
<select id="from">
<option>Request accounts first</option>
</select>
</div>
<div class="icon is-small is-left">
<i class="fas fa-wallet"></i>
</div>
</div>
</div>
<div class="field">
<div class="control has-icons-left">
<div class="select is-fullwidth">
<select id="asset">
<option>Get assets first</option>
</select>
</div>
<div class="icon is-small is-left">
<i class="fas fa-signature"></i>
</div>
</div>
</div>
<div class="field">
<p class="control has-icons-left">
<input class="input" id="note" placeholder="Note">
<span class="icon is-small is-left">
<i class="fas fa-sticky-note"></i>
</span>
</p>
</div>
<pre><code class="JSON" id="sign-code">code snippet output</code></pre>
</div>
</div>
</div>
</section>
<!-- /SIGN -->
<!-- POST -->
<section class="section">
<div class="container">
<h1 class="title">
Post Transaction to Network
<a class="button is-small is-pulled-right" target="_blank" rel="noopener noreferrer"
href="https://github.com/PureStake/algosigner-dapp-example/blob/master/asset-optin.html#L507-L522">
<span class="icon is-small">
<i class="fab fa-github"></i>
</span>
<span>See code on GitHub</span>
</a>
</h1>
<p class="subtitle">
Post the previously signed transaction to the network
</p>
<div class="columns">
<div class="column">
<pre><code class="js">
console.log('Waiting for network confirmation...');
<b>algorand.postTxns</b>(signedTxns)
.then((d) => {
console.log(d);
})
.catch((e) => {
console.error(e);
});
</code></pre>
<button class="button is-primary is-fullwidth" id="post">Run code</button>
</div>
<div class="column">
<pre><code class="JSON" id="post-code">code snippet output</code></pre>
</div>
</div>
</div>
</section>
<!-- /POST -->
<!-- SIGNPOST -->
<section class="section">
<div class="container">
<h1 class="title">
Sign and Post Asset Opt-out transaction
<a class="button is-small is-pulled-right" target="_blank" rel="noopener noreferrer"
href="https://github.com/PureStake/algosigner-dapp-example/blob/master/asset-optin.html#L524-L562">
<span class="icon is-small">
<i class="fab fa-github"></i>
</span>
<span>See code on GitHub</span>
</a>
</h1>
<p class="subtitle">
Request AlgoSigner to post the asset opt-out transaction to the network as soon as it's signed
</p>
<div class="columns">
<div class="column">
<pre><code class="js">
unsignedTxn = algosdk.makeAssetTransferTxnWithSuggestedParamsFromObject({
from: document.getElementById('from').value,
to: document.getElementById('from').value,
closeRemainderTo: document.getElementById('from').value,
assetIndex: +document.getElementById('asset').value,
note: <b>algorand.encoding</b>.stringToByteArray(document.getElementById('note').value),
amount: 0,
suggestedParams: {...txnParams}
});
console.log(unsignedTxn._getDictForDisplay());
// Use the provided library to make the transaction base64-encoded
let b64EncodedTxn = <b>algorand.encoding</b>.msgpackToBase64(unsignedTxn.toByte());
<b>algorand.signAndPostTxns</b>([{txn: b64EncodedTxn}])
.then((d) => {
console.log(d);
})
.catch((e) => {
console.error(e);
});
</code></pre>
<button class="button is-primary is-fullwidth" id="signpost">Run code</button>
</div>
<div class="column">
<pre><code class="JSON" id="signpost-code">code snippet output</code></pre>
</div>
</div>
</div>
</section>
<!-- /SIGNPOST -->
<footer class="footer">
<div class="content has-text-centered">
by <a target="_blank" rel="noopener noreferrer" href="https://purestake.com">
<img src="assets/ps-logo.png" height="28">
</a>
</div>
</footer>
<script defer src="https://use.fontawesome.com/releases/v5.3.1/js/all.js"></script>
<script>
hljs.initHighlightingOnLoad();
let algodClient;
let indexerClient;
let txnParams;
let sharedAccounts;
let assetsList;
let unsignedTxn;
let signedTxns;
let b64EncodedTxn;
function enable() {
let enableCodeElem = document.getElementById('enable-code');
if (txnParams === undefined) {
enableCodeElem.innerHTML = 'Please run the client setup code first.';
} else {
algorand.enable({ genesisID: txnParams.genesisID })
.then((d) => {
enableCodeElem.innerHTML = JSON.stringify(d, null, 2);
sharedAccounts = d.accounts;
// Append accounts to account select
let select = document.getElementById('from');
select.textContent = '';
for (const address of sharedAccounts) {
let option = document.createElement('option');
option.text = address;
option.value = address;
select.appendChild(option);
}
})
.catch((e) => {
console.error(e);
enableCodeElem.innerHTML = JSON.stringify(e, null, 2);
})
.finally(() => {
hljs.highlightBlock(enableCodeElem);
});
}
}
function sdkSetup() {
let sdkSetupCodeElem = document.getElementById('sdk-setup');
const algodServer = 'https://testnet-algorand.api.purestake.io/ps2';
const indexerServer = 'https://testnet-algorand.api.purestake.io/idx2';
const token = { 'X-API-Key': 'B3SU4KcVKi94Jap2VXkK83xx38bsv95K5UZm2lab' }
const port = '';
algodClient = new algosdk.Algodv2(token, algodServer, port);
indexerClient = new algosdk.Indexer(token, indexerServer, port);
// Fetch params
algodClient.getTransactionParams().do()
.then(d => {
txnParams = d;
sdkSetupCodeElem.innerHTML = JSON.stringify(d, null, 2);
})
.catch(e => { sdkSetupCodeElem.innerHTML = JSON.stringify(e, null, 2); })
.finally(() => {
hljs.highlightBlock(sdkSetupCodeElem);
});
}
function assets() {
let assetsCodeElem = document.getElementById('assets-code');
const name = document.getElementById('name').value;
const limit = document.getElementById('limit').value;
if (indexerClient === undefined) {
assetsCodeElem.innerHTML = 'Please run the client setup code first.';
} else if (!name || !limit) {
assetsCodeElem.innerHTML = 'Please fill the "name" and "limit" fields.';
} else {
indexerClient.searchForAssets()
.limit(limit)
.name(name)
.do()
.then((d) => {
assetsCodeElem.innerHTML = JSON.stringify(d, null, 2);
assetsList = d.assets;
// Append assets to assets select
let select = document.getElementById('asset');
select.textContent = '';
for (var i = assetsList.length - 1; i >= 0; i--) {
let option = document.createElement('option');
option.text = assetsList[i].params.name || assetsList[i].index;
option.value = assetsList[i].index;
select.appendChild(option);
}
})
.catch((e) => {
console.error(e);
assetsCodeElem.innerHTML = JSON.stringify(e, null, 2);
})
.finally(() => {
hljs.highlightBlock(assetsCodeElem);
});
}
}
function sign() {
let signCodeElem = document.getElementById('sign-code');
let from = document.getElementById('from').value;
let assetIndex = +document.getElementById('asset').value;
if (!from || assetIndex < 1) {
signCodeElem.innerHTML = 'Please fill the "from" and "asset" fields.';
} else {
unsignedTxn = algosdk.makeAssetTransferTxnWithSuggestedParamsFromObject({
from: from,
to: from,
assetIndex: assetIndex,
note: algorand.encoding.stringToByteArray(document.getElementById('note').value),
amount: 0,
suggestedParams: {...txnParams}
});
let b64EncodedTxn = algorand.encoding.msgpackToBase64(unsignedTxn.toByte());
const readableTxn = {
...unsignedTxn._getDictForDisplay(),
note: unsignedTxn.note ? algorand.encoding.byteArrayToString(unsignedTxn.note) : null,
};
signCodeElem.innerHTML = JSON.stringify(readableTxn, null, 2);
algorand.signTxns([{txn: b64EncodedTxn}])
.then((d) => {
signedTxns = d;
signCodeElem.innerHTML = JSON.stringify(d, null, 2);
})
.catch((e) => {
console.error(e);
signCodeElem.innerHTML = JSON.stringify(e, null, 2);
})
.finally(() => {
hljs.highlightBlock(signCodeElem);
});
}
}
function post() {
let postCodeElem = document.getElementById('post-code');
postCodeElem.innerHTML = 'Waiting for network confirmation...';
algorand.postTxns(signedTxns)
.then((d) => {
postCodeElem.innerHTML = JSON.stringify(d, null, 2);
})
.catch((e) => {
console.error(e);
postCodeElem.innerHTML = JSON.stringify(e, null, 2);
})
.finally(() => {
hljs.highlightBlock(postCodeElem);
});
}
function signpost() {
let signpostCodeElem = document.getElementById('signpost-code');
let from = document.getElementById('from').value;
let assetIndex = +document.getElementById('asset').value;
if (!from || assetIndex < 1) {
signpostCodeElem.innerHTML = 'Please complete the "sign" and "post" sections before running this block.';
} else {
unsignedTxn = algosdk.makeAssetTransferTxnWithSuggestedParamsFromObject({
from: from,
to: from,
closeRemainderTo: from,
assetIndex: assetIndex,
note: algorand.encoding.stringToByteArray(document.getElementById('note').value),
amount: 0,
suggestedParams: {...txnParams}
});
let b64EncodedTxn = algorand.encoding.msgpackToBase64(unsignedTxn.toByte());
const readableTxn = {
...unsignedTxn._getDictForDisplay(),
note: unsignedTxn.note ? algorand.encoding.byteArrayToString(unsignedTxn.note) : null,
};
signpostCodeElem.innerHTML = JSON.stringify(readableTxn, null, 2);
algorand.signAndPostTxns([{txn: b64EncodedTxn}])
.then((d) => {
signpostCodeElem.innerHTML = JSON.stringify(d, null, 2);
})
.catch((e) => {
console.error(e);
signpostCodeElem.innerHTML = JSON.stringify(e, null, 2);
})
.finally(() => {
hljs.highlightBlock(signpostCodeElem);
});
}
}
document.getElementById('enable').addEventListener('click', enable);
document.getElementById('sdksetup').addEventListener('click', sdkSetup);
document.getElementById('assets').addEventListener('click', assets);
document.getElementById('sign').addEventListener('click', sign);
document.getElementById('post').addEventListener('click', post);
document.getElementById('signpost').addEventListener('click', signpost);
</script>
<script src="https://unpkg.com/algosdk@1.24.0"></script>
</body>
</html>