Update submodule listener to support multiple branches!

Author: wanomaniac

.github/workflows/submodule_listener.yaml

@@ -1,34 +1,44 @@
-name: Update Submodules
-
-permissions:
-  contents: write
-
-on:
-  repository_dispatch:
-    types: [update_submodule]
-
 jobs:
   update:
     runs-on: ubuntu-latest
     steps:
-      - name: Checkout meta repo at main
+      - name: Checkout root repo (Default Branch)
         uses: actions/checkout@v3
         with:
-          ref: latest
+          # Start by checking out the default branch to ensure we have a base
+          ref: ${{ github.event.repository.default_branch }}
           token: ${{ secrets.GITHUB_TOKEN }}
-          submodules: false # Avoid broken recursive update
           fetch-depth: 0
-         # persist-credentials: false
+
+      - name: Switch to target branch (Create if missing)
+        run: |
+          TARGET_BRANCH="${{ github.event.client_payload.branch }}"
+          
+          # Check if the branch exists on the remote
+          if git ls-remote --heads origin "$TARGET_BRANCH" | grep -q "$TARGET_BRANCH"; then
+            echo "Branch $TARGET_BRANCH exists. Switching..."
+            git checkout "$TARGET_BRANCH"
+          else
+            echo "Branch $TARGET_BRANCH not found. Creating from default..."
+            git checkout -b "$TARGET_BRANCH"
+          fi
 
       - name: Sync and update submodules
         run: |
           git submodule sync
           git submodule update --init --remote
 
-      - name: Commit submodule changes
+      - name: Commit and Push
         run: |
-          git add .
           git config user.name "GitHub Action"
           git config user.email "action@github.com"
-          git diff --cached --quiet || git commit -m "Update submodules from ${{ github.event.client_payload.repo }}"
-          git push
+          git add .
+          
+          # Only commit and push if there are changes
+          if ! git diff --cached --quiet; then
+            git commit -m "Update submodules from ${{ github.event.client_payload.repo }} on branch ${{ github.event.client_payload.branch }}"
+            # Use -u to set up tracking for newly created branches
+            git push -u origin HEAD:"${{ github.event.client_payload.branch }}"
+          else
+            echo "No changes to commit."
+          fi