ProxmoxVE/.github/workflows/generate-app-headers.yaml

name: Update .app-headers in /misc

on:
  push:
    branches: ["main"]
  workflow_dispatch:

jobs:
  update-and-merge-pr:
    runs-on: ubuntu-latest
    permissions:
      contents: write
      pull-requests: write

    steps:
      # Step 1: Setup job (Check environment & install dependencies)
      - name: Setup environment
        run: |
          echo "Setting up the environment for the workflow."
          sudo apt-get update
          sudo apt-get install -y figlet gh jq          

      # Step 2: Generate Token
      - name: Generate a token
        id: generate-token
        uses: actions/create-github-app-token@v1
        with:
          app-id: ${{ secrets.CREATE_HEADER_APP_ID }}  
          private-key: ${{ secrets.CREATE_HEADER_SECRET }}

      # Step 3: Checkout repository
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          fetch-depth: 0  # Fetch all history to ensure we have full access to the repo history

      # Step 4: Check or Update Branch (Create or update the update-app-headers branch)
      - name: Check or Update Branch
        run: |
          git fetch origin
          if ! git show-ref --quiet refs/heads/update-app-headers; then
            echo "Creating the 'update-app-headers' branch as it does not exist."
            git checkout -b update-app-headers origin/main
          else
            echo "Switching to the existing 'update-app-headers' branch."
            git checkout update-app-headers
          fi          

      # Step 4.1: Configure Git user
      - name: Configure Git user
        run: |
          git config --global user.name "github-actions[bot]"
          git config --global user.email "github-actions[bot]@users.noreply.github.com"          

      # Step 5: Ensure .app-headers file exists
      - name: Ensure .app-headers file exists
        run: |
          if [ ! -f ".app-headers" ]; then
            echo "The .app-headers file does not exist. Creating it."
            echo "Generated by CI" > .app-headers
          else
            echo ".app-headers already exists."
          fi          

      # Step 6: Setup Figlet (Install and set up Figlet for text generation)
      - name: Set up Figlet
        run: sudo apt-get install -y figlet

      # Step 7: Run generate-app-headers script
      - name: Run generate-app-headers script
        run: |
          bash .github/workflows/generate-app-headers.sh          

      # Step 8: Check for changes (ensure file is updated)
      - name: Check for changes
        run: |
          git diff --exit-code || echo "Changes detected."          

      # Step 9: Commit changes if any
      - name: Commit changes if any
        run: |
          git diff --exit-code || git commit -am "[core]: update .app-headers to latest version"          

      # Step 10: Push changes to the branch
      - name: Push changes to the branch
        run: |
          git push origin update-app-headers --force || echo "No changes to push"          

      # Step 11: Compare branches (Check for differences between main and update-app-headers)
      - name: Compare branches (Check for differences between main and update-app-headers)
        run: |
          git fetch origin
          DIFF=$(git diff --quiet origin/main..origin/update-app-headers || echo "Changes detected")
          if [[ "$DIFF" == "Changes detected" ]]; then
            echo "Changes found between main and update-app-headers. Proceeding with PR creation."
          else
            echo "No changes found between main and update-app-headers. Skipping PR creation."
            exit 0  # Skip PR creation if no changes are found
          fi          

      # Step 12: Create Pull Request (If changes exist, create a PR)
      - name: Create PR
        id: create-pr
        if: steps.compare-branches.outcome == 'success'
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          PR_EXISTS=$(gh pr list --head "update-app-headers" --json number --jq '.[].number')
          if [ -z "$PR_EXISTS" ]; then
            echo "Creating a new PR."
            gh pr create --title "[core]: update .app-headers to latest version" \
                         --body "This PR automatically updates the app-headers file." \
                         --head update-app-headers \
                         --base main
          else
            echo "PR already exists."
          fi          

      # Step 13: Final status (Output status to console)
      - name: Output final status
        run: |
          echo "Workflow completed successfully. Branch and PR status updated."          

      # Step 14: Post checkout repo (Make sure to clean up the repository state)
      - name: Post checkout repo
        run: |
          echo "Repository check complete."
          git status          

      # Step 15: Post generate token (Output generated token for logging purposes)
      - name: Post generate token
        run: |
          echo "Generated token: ${GITHUB_TOKEN}"          

      # Step 16: Complete (Final confirmation that workflow has finished)
      - name: Complete
        run: |
          echo "Workflow has completed successfully."