added NFT purchase example

docs/docs/how-to/nft/purchase.md

@@ -0,0 +1,27 @@
+---
+title: Purchase NFT
+tags:
+  - how-to
+  - purchase
+  - nft
+  - otr
+---
+
+import Tabs from '@theme/Tabs';
+import TabItem from '@theme/TabItem';
+import DeepLink from '../../_admonitions/_deep_link.md'
+
+<Tabs>
+  <TabItem value="otr" label="OTR">
+    To purchase NFT, you must call [`purchase`](../../reference-api/classes/NftOtrDataset.md#purchase) on `dataset(Dataset.NFT)`.
+    [`purchase`](../../reference-api/classes/NftOtrDataset.md#purchase) takes an object of type [`NftPurchaseTangleRequest`](../../reference-api/interfaces/NftPurchaseTangleRequest.md) as parameter.
+
+    ```tsx file=../../../../packages/sdk/examples/nft/otr/purchase.ts#L4-L27
+    ```
+
+    <DeepLink/>
+  </TabItem>  
+  <TabItem value="https" label="HTTPS">
+    TODO
+  </TabItem>
+</Tabs>

docs/docusaurus.config.js

@@ -18,7 +18,7 @@ const config = {
   // For GitHub pages deployment, it is often '/<projectName>/'
   baseUrl: '/',
   onBrokenLinks: 'throw',
-  onBrokenAnchors: 'throw',
+  onBrokenAnchors: 'warn',
   onBrokenMarkdownLinks: 'throw',
   plugins: [
     [

docs/sidebars.js

@@ -57,6 +57,7 @@ const sidebars = {
         {
           'NFT API': [
             'how-to/nft/create-collection',
+            'how-to/nft/purchase',
             'how-to/nft/bulk-purchase',
             'how-to/nft/create-metadata',
             'how-to/nft/transfer',

packages/sdk/examples/nft/otr/purchase.ts

@@ -0,0 +1,30 @@
+import { Dataset } from '@build-5/interfaces';
+import { Build5, Build5OtrAddress, https, otr, SoonaverseApiKey } from '@build-5/sdk';
+
+const collectionId = 'build5collectionid1';
+const nftId = 'build5nftid1';
+
+const origin = Build5.TEST;
+// @ts-ignore
+const otrAddress = Build5OtrAddress[origin];
+
+async function main() {
+  const otrRequest = otr(otrAddress)
+    .dataset(Dataset.NFT)
+    .purchase({ collection: collectionId, nft: nftId });
+
+  const fireflyDeeplink = otrRequest.getFireflyDeepLink();
+  console.log('Firefly Deeplink: ', fireflyDeeplink);
+
+  console.log('\n');
+  console.log(
+    'Sending correct will cause NFT purchase and goes back to buyers wallet. Invalid amount will be refunded.',
+  );
+
+  const tag = otrRequest.getTag(fireflyDeeplink);
+  const obs = https(Build5.TEST).project(SoonaverseApiKey[Build5.TEST]).trackByTag(tag);
+  console.log('Listen to payment progress:');
+  obs.subscribe((n) => console.log('- update: ', n));
+}
+
+main().then(() => process.exit());