Add payment hash verification to nodeJS client

commerceblock · Aug 6, 2024 · 746f5cd · 746f5cd
1 parent 579d35b
commit 746f5cd
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Showing 4 changed files with 47 additions and 2 deletions.
diff --git a/clients/apps/nodejs/index.js b/clients/apps/nodejs/index.js
@@ -190,6 +190,16 @@ async function main() {
 
         console.log(JSON.stringify(res, null, 2));
     });
+
+    program.command('get-payment-hash')
+      .description('Confirm a pending invoice for lightning latch')
+      .argument('<batch-id>', 'transfer batch id')
+      .action(async (batch_id) => {
+
+       let res = await mercurynodejslib.getPaymentHash(clientConfig, batch_id);
+
+        console.log(JSON.stringify(res, null, 2));
+    });
 
   program.parse();
 

diff --git a/clients/apps/nodejs/test/tb04-simple-lightning-latch.mjs b/clients/apps/nodejs/test/tb04-simple-lightning-latch.mjs
@@ -50,6 +50,10 @@ describe('TB04 - Lightning Latch', function() {
 
       await mercurynodejslib.transferSend(clientConfig, wallet1.name, coin.statechain_id, transferAddress.transfer_receive, false, paymentHash.batchId);
 
+      const hashFromServer = await mercurynodejslib.getPaymentHash(clientConfig, paymentHash.batchId);
+
+      expect(hashFromServer).to.equal(paymentHash.hash);
+
       let transferReceiveResult = await mercurynodejslib.transferReceive(clientConfig, wallet2.name);
 
       expect(transferReceiveResult.isThereBatchLocked).is.true;

diff --git a/clients/libs/nodejs/index.js b/clients/libs/nodejs/index.js
@@ -247,6 +247,11 @@ const retrievePreImage = async (clientConfig, walletName, statechainId, batchId)
     return preImage;
 }
 
+const getPaymentHash = async (clientConfig, batchId) => {
+
+    return await lightningLatch.getPaymentHash(clientConfig, batchId);
+}
+
 module.exports = { 
     createWallet, 
     newToken, 
@@ -260,5 +265,6 @@ module.exports = {
     transferReceive,
     paymentHash,
     confirmPendingInvoice,
-    retrievePreImage
+    retrievePreImage,
+    getPaymentHash
 };
diff --git a/clients/libs/nodejs/lightning-latch.js b/clients/libs/nodejs/lightning-latch.js
@@ -135,4 +135,29 @@ const retrievePreImage = async (clientConfig, db, walletName, statechainId, batc
     return { preimage: response?.data?.preimage };
 }
 
-module.exports = { createPreImage, confirmPendingInvoice, retrievePreImage };
+const getPaymentHash = async (clientConfig, batchId) => {
+
+    const url = `${clientConfig.statechainEntity}/transfer/paymenthash/${batchId}`;
+
+    const torProxy = clientConfig.torProxy;
+
+    let socksAgent = undefined;
+
+    if (torProxy) {
+        socksAgent = { httpAgent: new SocksProxyAgent(torProxy) };
+    }
+
+    try {
+        const response = await axios.get(url, socksAgent);
+        return response?.data?.hash;
+    }
+    catch (error) {
+        if (error.response.status == 401) {
+            return null;
+        } else {
+            throw new Error(`Failed to retrieve payment hash: ${JSON.stringify(error.response.data)}`);
+        }
+    }
+}
+
+module.exports = { createPreImage, confirmPendingInvoice, retrievePreImage, getPaymentHash };