From 99cd598334825fb8023288da9eb05e999e33c5c2 Mon Sep 17 00:00:00 2001
From: mauwii <Mauwii@outlook.de>
Date: Sat, 28 Jan 2023 23:52:24 +0100
Subject: [PATCH] add workflow to clean caches after PR gets closed

---
 .github/workflows/clean-caches.yml | 34 ++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)
 create mode 100644 .github/workflows/clean-caches.yml

diff --git a/.github/workflows/clean-caches.yml b/.github/workflows/clean-caches.yml
new file mode 100644
index 0000000000..e5acdeab1b
--- /dev/null
+++ b/.github/workflows/clean-caches.yml
@@ -0,0 +1,34 @@
+name: cleanup caches by a branch
+on:
+  pull_request:
+    types:
+      - closed
+  workflow_dispatch:
+
+jobs:
+  cleanup:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out code
+        uses: actions/checkout@v3
+
+      - name: Cleanup
+        run: |
+          gh extension install actions/gh-actions-cache
+
+          REPO=${{ github.repository }}
+          BRANCH=${{ github.ref }}
+
+          echo "Fetching list of cache key"
+          cacheKeysForPR=$(gh actions-cache list -R $REPO -B $BRANCH | cut -f 1 )
+
+          ## Setting this to not fail the workflow while deleting cache keys.
+          set +e
+          echo "Deleting caches..."
+          for cacheKey in $cacheKeysForPR
+          do
+              gh actions-cache delete $cacheKey -R $REPO -B $BRANCH --confirm
+          done
+          echo "Done"
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}