Chore: pipeline improvemenst (#383)

* fix: fixing empty env var for pipeline

* chore: renaming vars to upper snake case

* chore: pipeline improvements

* fix: adding triggering payload

* fix: adding triggering payload

Author: Kammerlo

.github/workflows/close_pr_on_merged_branch.yml

@@ -13,15 +13,31 @@ jobs:
       contents:  read
     env:
       GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-      SOURCE_BRANCH: "${{ github.event.client_payload.SOURCE_BRANCH }}"
+      SOURCE_BRANCH: "${{ github.event.client_payload.TRIGGERING_PAYLOAD.SOURCE_BRANCH }}"
 
     steps:
+      - name: Validate source branch
+        run: |
+          if [[ -z "$SOURCE_BRANCH" ]]; then
+            echo "SOURCE_BRANCH is empty or missing – aborting"
+            exit 1
+          fi
       - name: Skip protected branches
         id: check_branch
         run:  |
           if [[ "$SOURCE_BRANCH" == "main" || "$SOURCE_BRANCH" == "release/"* ]]; then
             echo "Protected branch $SOURCE_BRANCH – skipping"
             echo "skip=true" >> $GITHUB_OUTPUT
+          else
+            echo "skip=false" >> $GITHUB_OUTPUT
+          fi
+
+      - name: Check if PR exists
+        if: steps.check_branch.outputs.skip != 'true'
+        run: |
+          if ! gh pr view "$SOURCE_BRANCH" --repo ${{ github.repository }} >/dev/null 2>&1; then
+            echo "No open PR found for branch $SOURCE_BRANCH – nothing to close"
+            exit 0
           fi
 
       - name:  Close PR