Auto generate Release Notes (#5182)

* AI Generated release notes

* lint

* removedverbose console.log

.github/actions/ai-generated-release-notes/check-release-notes-exists.js

@@ -0,0 +1,76 @@
+#!/usr/bin/env node
+
+import { Octokit } from '@octokit/rest';
+import fs from 'fs';
+
+const token = process.env.GITHUB_TOKEN;
+const repo = process.env.GITHUB_REPOSITORY;
+const issueNumber = process.env.GITHUB_EVENT_ISSUE_NUMBER;
+const prDetailsJson = process.env.PR_DETAILS;
+
+if (!token || !repo || !issueNumber || !prDetailsJson) {
+  console.log('Missing required environment variables');
+  process.exit(1);
+}
+
+const [owner, repoName] = repo.split('/');
+const octokit = new Octokit({ auth: token });
+
+function setOutput(name, value) {
+  fs.appendFileSync(process.env.GITHUB_OUTPUT, `${name}=${value}\n`);
+}
+
+async function checkReleaseNotesExists() {
+  try {
+    const prDetails = JSON.parse(prDetailsJson);
+    if (!prDetails) {
+      console.log('No PR details available, skipping file check');
+      setOutput('result', 'false');
+      return;
+    }
+
+    const fileName = `upcoming-release-notes/${prDetails.number}.md`;
+
+    // Get PR info to get head SHA
+    const { data: pr } = await octokit.rest.pulls.get({
+      owner,
+      repo: repoName,
+      pull_number: issueNumber,
+    });
+
+    const prHeadSha = pr.head.sha;
+    console.log(
+      `Checking for file on PR branch: ${pr.head.ref} (${prHeadSha})`,
+    );
+
+    // Check if file exists
+    try {
+      await octokit.rest.repos.getContent({
+        owner,
+        repo: repoName,
+        path: fileName,
+        ref: prHeadSha,
+      });
+
+      console.log(
+        `Release notes file already exists on PR branch: ${fileName}`,
+      );
+      setOutput('result', 'true');
+    } catch (error) {
+      if (error.status === 404) {
+        console.log(
+          `No existing release notes file found on PR branch: ${fileName}`,
+        );
+        setOutput('result', 'false');
+      } else {
+        console.log('Error checking file existence:', error.message);
+        setOutput('result', 'false');
+      }
+    }
+  } catch (error) {
+    console.log('Error in file existence check:', error.message);
+    setOutput('result', 'false');
+  }
+}
+
+checkReleaseNotesExists();