From e83f0f0f7a8c9cf32bbe9ecb488ea4a96c9757a5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?S=C3=A9bastien=20BREVET?= <sbrevet@gatling.io>
Date: Wed, 17 Jun 2026 15:29:20 +0200
Subject: [PATCH] build: auto merge PRs from scala steward

Motivation:
If the build pass, there is no other human verification before merging dependency PR.

Modifications:
 * Add auto-merge worfklow

Result:
PRs from scala steward will be automatically merged into the codebase if the build is successful
---
 .github/workflows/auto-merge.yml | 35 ++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 .github/workflows/auto-merge.yml

diff --git a/.github/workflows/auto-merge.yml b/.github/workflows/auto-merge.yml
new file mode 100644
index 0000000..e0b572d
--- /dev/null
+++ b/.github/workflows/auto-merge.yml
@@ -0,0 +1,35 @@
+name: Auto Merge
+
+on:
+  workflow_run:
+    workflows:
+      - Build
+    types:
+      - completed
+
+jobs:
+  auto-merge:
+    if: >
+      github.event.workflow_run.conclusion == 'success' &&
+      github.event.workflow_run.event == 'pull_request' &&
+      github.event.workflow_run.actor.login == 'scala-steward-gatling[bot]'
+    runs-on: ubuntu-latest
+    steps:
+      - name: Merge pull request
+        env:
+          GH_TOKEN: ${{ secrets.GATLING_CI_TOKEN }}
+        run: |
+          PR_NUMBER=$(gh api \
+            "repos/${{ github.repository }}/pulls" \
+            --jq "[.[] | select(.head.sha == \"${{ github.event.workflow_run.head_sha }}\") | .number] | first")
+
+          if [ -z "$PR_NUMBER" ] || [ "$PR_NUMBER" = "null" ]; then
+            echo "No open PR found for commit ${{ github.event.workflow_run.head_sha }}"
+            exit 0
+          fi
+
+          echo "Auto-merging PR #$PR_NUMBER"
+          gh pr merge "$PR_NUMBER" \
+            --repo "${{ github.repository }}" \
+            --rebase \
+            --delete-branch