[FEATURE]: Add try catch and conditional for commenting

.github/scripts/webhook-pr-comment.js

@@ -1,10 +1,16 @@
 const fs = require('fs');
 
 module.exports = ({ github }) => {
-  const outputsFile = fs.readFileSync('cdk-infra/outputs.json').toString();
-  const outputs = JSON.parse(outputsFile);
-  console.log(github.head_ref);
-  console.log(outputsFile);
-  const webhook = Object.values(outputs[`auto-builder-stack-enhancedApp-stg-${github.head_ref}-webhooks`])[0];
-  return webhook;
+  try {
+    const outputsFile = fs.readFileSync('cdk-infra/outputs.json').toString();
+    const outputs = JSON.parse(outputsFile);
+    console.log('github', github);
+    console.log(github.head_ref);
+    console.log(outputsFile);
+    const webhook = Object.values(outputs[`auto-builder-stack-enhancedApp-stg-${github.head_ref}-webhooks`])[0];
+    return webhook;
+  } catch (error) {
+    console.log('Error occurred when retrieving Webhook URL');
+    return '';
+  }
 };

.github/workflows/deploy-feature-branch.yml

@@ -36,6 +36,7 @@ jobs:
             return script({context, github})
           result-encoding: string
       - name: Comment on PR
+        if: steps.webhook.outputs.result != ''
         run: gh pr comment ${{github.event.number}} --body "The URL for your feature branch webhook is ${{steps.webhook.outputs.result}}"
         env: 
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}