From d779df57990ea9bde1b5a6c45483e354ff0d97dd Mon Sep 17 00:00:00 2001
From: Derrick Williams <derrickaw@google.com>
Date: Wed, 14 Oct 2026 17:58:43 +0000
Subject: [PATCH] add a draft gemini review check

---
 .github/workflows/gemini_code_review.yml | 30 ++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/.github/workflows/gemini_code_review.yml b/.github/workflows/gemini_code_review.yml
index 397ebe01644a..f039e011c0e4 100644
--- a/.github/workflows/gemini_code_review.yml
+++ b/.github/workflows/gemini_code_review.yml
@@ -50,13 +50,42 @@ jobs:
       pull-requests: write
 
     steps:
+      - name: Check for existing Gemini review from draft
+        id: check_draft_review
+        if: github.event_name == 'pull_request_target' && github.event.action == 'ready_for_review'
+        uses: actions/github-script@v9
+        env:
+          PR_NUMBER: ${{ github.event.pull_request.number }}
+        with:
+          script: |
+            const prNumber = Number(process.env.PR_NUMBER);
+            const reviews = await github.paginate(github.rest.pulls.listReviews, {
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              pull_number: prNumber,
+              per_page: 100,
+            });
+            const reviewedInDraft = reviews.some(
+              r =>
+                r.user &&
+                r.user.login === 'github-actions[bot]' &&
+                typeof r.body === 'string' &&
+                r.body.includes('/gemini review')
+            );
+            if (reviewedInDraft) {
+              core.info(`PR #${prNumber} was already reviewed by Gemini while in draft; skipping automatic review on ready_for_review.`);
+            }
+            core.setOutput('reviewed_in_draft', reviewedInDraft ? 'true' : 'false');
+
       - name: Setup Node.js
+        if: steps.check_draft_review.outputs.reviewed_in_draft != 'true'
         uses: actions/setup-node@v7
         with:
           node-version: '20'
 
       - name: Run Gemini Enterprise Code Review Agent
         id: gemini_review
+        if: steps.check_draft_review.outputs.reviewed_in_draft != 'true'
         shell: bash
         env:
           GEMINI_CLI_TRUST_WORKSPACE: 'true'
@@ -125,6 +154,7 @@ jobs:
           fi
 
       - name: Post PR Review to GitHub
+        if: steps.check_draft_review.outputs.reviewed_in_draft != 'true'
         uses: actions/github-script@v9
         env:
           PR_NUMBER: ${{ github.event.pull_request.number || github.event.issue.number || inputs.pr_number }}