From 5b9118ee4a973597749e66e0ec9111788bd12855 Mon Sep 17 00:00:00 2001
From: Sean McGary <sean@seanmcgary.com>
Date: Fri, 22 Nov 2024 14:21:25 -0600
Subject: [PATCH] Add github action to check if your branch is up to date

Check on PRs only

Fix action trigger

clean up variables, fetch origin
---
 .github/workflows/check-merge.yml | 33 +++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 .github/workflows/check-merge.yml

diff --git a/.github/workflows/check-merge.yml b/.github/workflows/check-merge.yml
new file mode 100644
index 00000000..4e69a55d
--- /dev/null
+++ b/.github/workflows/check-merge.yml
@@ -0,0 +1,33 @@
+name: check-pr-merge
+on:
+  pull_request:
+    types:
+      - opened
+      - synchronize
+      - reopened
+    branches:
+      - master
+      - "release/*"
+jobs:
+  check-merge:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Check if branch is up to date
+        env:
+          BASE_REF: ${{ github.base_ref }}
+        run: |
+          baseRef="origin/${BASE_REF}"
+          echo "Targeting '$baseRef'"
+          
+          git fetch origin
+          
+          res=$(git --no-pager log HEAD..$baseRef --oneline)
+          if [[ -z "$res" ]]; then
+            echo "Branch is up to date with master"
+          else
+            echo "Branch is not up to date with master"
+            echo "Please rebase your branch"
+            exit 1
+          fi