use an existing github action for that

.github/workflows/delete-old-branches.yml

@@ -7,42 +7,16 @@ on: [push]
 
 jobs:
   delete-old-branches:
+    name: Delete old branches
     runs-on: ubuntu-latest
     steps:
-      - name: Checkout Repository
+      - name: Checkout repository
         uses: actions/checkout@v2
-
-      - name: Fetch All Branches
-        run: git fetch --prune --all
-
-      - name: Delete branches older than 7 days
-        run: |
-          # Get the current date in Unix timestamp format
-          current_date=$(date +%s)
-          
-          # Get the list of remote branches and iterate over each branch
-          git branch -r | while read branch; do
-            # Extract the branch name from the full reference (e.g., "origin/branch-name")
-            branch_name=${branch#"origin/"}
-          
-            # Skip the 'master' branch
-            if [ "$branch_name" = "master" ]; then
-              continue
-            fi
-          
-            # Get the last commit date of the branch in Unix timestamp format
-            last_commit_date=$(git show -s --format=%ct "origin/$branch_name")
-          
-            # Calculate the time difference in seconds between the current date and last commit date
-            time_difference=$((current_date - last_commit_date))
-          
-            # Define the threshold in seconds (7 days: 7 days * 24 hours/day * 60 minutes/hour * 60 seconds/minute)
-            threshold=$((7 * 24 * 60 * 60))
-          
-            # Check if the branch is stale (not updated in the last 7 days) and list it if so
-            if [ "$time_difference" -gt "$threshold" ]; then
-              echo "Stale branch: $branch_name"
-              # git push --delete origin "$branch_name"
-              # git branch -d "$branch_name"
-            fi
-          done
+      - name: Run delete-old-branches-action
+        uses: beatlabs/[email protected]
+        with:
+          repo_token: ${{ github.token }}
+          date: '7 days ago'
+          default_branches: main,master,staging
+          dry_run: true
+          exclude_open_pr_branches: true