Add a fetch auto-update action

Author: coatless

.github/workflows/upstream-update.yml

@@ -0,0 +1,112 @@
+name: Fetch Latest Bandicoot Release
+
+on:
+  workflow_dispatch:  # Manual trigger
+  schedule:
+    - cron: '0 17 * * *'  # Runs daily at 10 AM PDT (5 PM UTC)
+
+jobs:
+  fetch-gitlab-release:
+    runs-on: ubuntu-latest
+    
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+        
+      - name: Set up GitLab API access
+        id: setup
+        run: |
+          echo "GITLAB_API_URL=https://gitlab.com/api/v4" >> $GITHUB_ENV
+          echo "GITLAB_PROJECT_ID=bandicoot-lib/bandicoot-code" >> $GITHUB_ENV
+          
+      - name: Get current version
+        id: current-version
+        run: |
+          if [ -f "inst/version.txt" ]; then
+            CURRENT_VERSION=$(cat inst/version.txt)
+            echo "current_version=$CURRENT_VERSION" >> $GITHUB_OUTPUT
+            echo "Current version: $CURRENT_VERSION"
+          else
+            echo "current_version=none" >> $GITHUB_OUTPUT
+            echo "No current version found"
+          fi
+          
+      - name: Fetch latest release from GitLab
+        id: get-version
+        run: |
+          # Fetch latest release from GitLab API
+          RESPONSE=$(curl -s "$GITLAB_API_URL/projects/$(echo $GITLAB_PROJECT_ID | sed 's/\//%2F/g')/releases" \
+            -H "PRIVATE-TOKEN: ${{ secrets.GITLAB_API_TOKEN }}")
+            
+          # Extract the latest version and download URL
+          LATEST_VERSION=$(echo $RESPONSE | jq -r '.[0].tag_name')
+          DOWNLOAD_URL=$(echo $RESPONSE | jq -r '.[0].assets.sources[0].url')
+          
+          # Remove 'v' prefix if present
+          LATEST_VERSION=${LATEST_VERSION#v}
+          
+          # Set as output and environment variable
+          echo "version=$LATEST_VERSION" >> $GITHUB_OUTPUT
+          echo "download_url=$DOWNLOAD_URL" >> $GITHUB_OUTPUT
+          echo "LATEST_VERSION=$LATEST_VERSION" >> $GITHUB_ENV
+          
+          # Log the fetched version
+          echo "Latest version: $LATEST_VERSION"
+          echo "Download URL: $DOWNLOAD_URL"
+      
+      - name: Check if update is needed
+        id: check-update
+        run: |
+          if [ "${{ steps.current-version.outputs.current_version }}" != "${{ steps.get-version.outputs.version }}" ]; then
+            echo "update_needed=true" >> $GITHUB_OUTPUT
+            echo "Update needed: Current version ${{ steps.current-version.outputs.current_version }} differs from latest ${{ steps.get-version.outputs.version }}"
+          else
+            echo "update_needed=false" >> $GITHUB_OUTPUT
+            echo "No update needed: Current version matches latest version"
+          fi
+      
+      - name: Download and extract release
+        if: steps.check-update.outputs.update_needed == 'true'
+        run: |
+          # Create temporary directory
+          mkdir -p temp_download
+          
+          # Download the release tarball
+          curl -L "${{ steps.get-version.outputs.download_url }}" -o temp_download/release.tar.gz
+          
+          # Extract the release tarball
+          tar -xzf temp_download/release.tar.gz -C temp_download
+          
+          # Create destination directory if it doesn't exist
+          mkdir -p inst/include
+          
+          # Find and copy the include directory contents
+          find temp_download -name "include" -type d -exec cp -r {}/* inst/include/ \;
+          
+          # Clean up
+          rm -rf temp_download
+          
+          # Update version file
+          mkdir -p inst
+          echo "${{ steps.get-version.outputs.version }}" > inst/version.txt
+          
+      - name: Create Pull Request
+        if: steps.check-update.outputs.update_needed == 'true'
+        uses: peter-evans/create-pull-request@v5
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          commit-message: "Update to Bandicoot release ${{ steps.get-version.outputs.version }}"
+          title: "Update Bandicoot to version ${{ steps.get-version.outputs.version }}"
+          body: |
+            This PR updates the Bandicoot library from version ${{ steps.current-version.outputs.current_version }} to ${{ steps.get-version.outputs.version }}.
+            
+            Changes:
+            - Updated `inst/include/` files from the latest release
+            - Updated version in `inst/version.txt`
+            
+            This PR was automatically generated by the Fetch Latest Bandicoot Release workflow.
+          branch: update-bandicoot-${{ steps.get-version.outputs.version }}
+          base: main
+          labels: |
+            dependency
+            automated pr