update submodule github action

.github/workflows/update-submodules.yml

@@ -0,0 +1,138 @@
+name: Check Submodule Updates
+
+on:
+  schedule:
+    # Run daily at midnight
+    - cron: '0 0 * * *'
+  # Allow manual trigger
+  workflow_dispatch:
+
+jobs:
+  check-submodule-updates:
+    name: Check for submodule updates
+    runs-on: ubuntu-latest
+
+    permissions:
+      contents: write
+      pull-requests: write
+
+    env:
+      PR_BRANCH: submodule-updates
+      PR_TITLE: "[chore]: update submodules"
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          # Fetch all history for all branches and tags
+          fetch-depth: 0
+          # Use SSH key authentication for submodules
+          submodules: 'recursive'
+          token: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Set up Git identity
+        run: |
+          git config --global user.name "GitHub Actions Bot"
+          git config --global user.email "actions@github.com"
+
+      - name: Check for existing PR
+        id: check_pr
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          PR_EXISTS=$(gh pr list --head ${{ env.PR_BRANCH }} --state open --json number | jq 'length')
+          echo "pr_exists=$PR_EXISTS" >> $GITHUB_OUTPUT
+          if [ "$PR_EXISTS" -gt "0" ]; then
+            PR_NUMBER=$(gh pr list --head ${{ env.PR_BRANCH }} --state open --json number --jq '.[0].number')
+            echo "pr_number=$PR_NUMBER" >> $GITHUB_OUTPUT
+          fi
+
+      - name: Check for submodule updates
+        id: check_updates
+        run: |
+          # Initialize all submodules
+          git submodule update --init --recursive
+
+          # Store current submodule commits
+          echo "Current submodule states:" > submodule_changes.txt
+          git submodule status >> submodule_changes.txt
+
+          # Update all submodules to latest on their respective default branches
+          git submodule foreach 'git fetch origin && git checkout $(git rev-parse --abbrev-ref origin/HEAD | sed "s|origin/||") && git pull'
+
+          # Check if there are changes
+          git status
+          if git diff --quiet --exit-code; then
+            echo "No submodule updates found"
+            echo "has_changes=false" >> $GITHUB_OUTPUT
+          else
+            echo "Submodule updates found"
+            echo "has_changes=true" >> $GITHUB_OUTPUT
+
+            # Add the changes to submodule_changes.txt
+            echo -e "\n\nUpdated submodule states:" >> submodule_changes.txt
+            git submodule status >> submodule_changes.txt
+          fi
+
+      - name: Create or update branch
+        if: steps.check_updates.outputs.has_changes == 'true'
+        run: |
+          # Check if the branch already exists locally
+          if git rev-parse --verify ${{ env.PR_BRANCH }} >/dev/null 2>&1; then
+            git checkout ${{ env.PR_BRANCH }}
+            # Ensure the branch is up-to-date with main
+            git fetch origin main
+            git merge origin/main --no-edit
+          else
+            # Create a new branch
+            git checkout -b ${{ env.PR_BRANCH }}
+          fi
+
+          # Add and commit changes
+          git add .
+          git commit -m "chore: update git submodules to latest version"
+
+      - name: Push changes
+        if: steps.check_updates.outputs.has_changes == 'true'
+        run: |
+          git push -u origin ${{ env.PR_BRANCH }} --force
+
+      - name: Create pull request
+        if: steps.check_updates.outputs.has_changes == 'true' && steps.check_pr.outputs.pr_exists == '0'
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          CHANGES=$(cat submodule_changes.txt)
+          PR_BODY="
+          ## Submodule Updates
+
+          This PR updates the following git submodules to their latest versions:
+
+          \`\`\`
+          ${CHANGES}
+          \`\`\`
+
+          *This PR was automatically generated by GitHub Actions.*
+          "
+
+          gh pr create --base main --head ${{ env.PR_BRANCH }} --title "${{ env.PR_TITLE }}" --body "$PR_BODY"
+
+      - name: Update existing pull request
+        if: steps.check_updates.outputs.has_changes == 'true' && steps.check_pr.outputs.pr_exists != '0'
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          CHANGES=$(cat submodule_changes.txt)
+          PR_BODY="
+          ## Submodule Updates
+
+          This PR updates the following git submodules to their latest versions:
+
+          \`\`\`
+          ${CHANGES}
+          \`\`\`
+
+          *This PR was automatically updated by GitHub Actions on $(date).*
+          "
+
+          gh pr edit ${{ steps.check_pr.outputs.pr_number }} --body "$PR_BODY"