name: Update .app-headers in /misc

on:
  push:
    paths:
      - 'ct/*'  # Action wird ausgelöst, wenn sich etwas in ct/ ändert
    branches:
      - main
  workflow_dispatch:

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

    steps:
      # Step 1: Checkout repository
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          fetch-depth: 0  # Ensure we have full access to all branches

      # Step 2: Configure git user
      - name: Configure Git user
        run: |
          git config --global user.name "GitHub Actions"
          git config --global user.email "actions@github.com"

      # Step 3: Merge main into update-app-headers
      - name: Merge main into update-app-headers
        run: |
          git fetch origin
          git checkout update-app-headers || git checkout -b update-app-headers
          git merge origin/main --no-ff --no-edit
          git push origin update-app-headers --force

      # Step 4: Ensure .app-headers file exists and initialize it
      - name: Initialize .app-headers file
        run: |
          if [ ! -f "ct/.app-headers" ]; then
            echo "Creating .app-headers file"
            touch ct/.app-headers
          fi

      # Step 5: Loop through ct/ scripts and execute figlet if APP= is found
      - name: Update .app-headers with figlet output
        run: |
          echo "Updating .app-headers with figlet output."
          for file in ct/*.sh; do
            if grep -q "APP=" "$file"; then
              APP_NAME=$(grep -oP 'APP=\K.*' "$file")
              echo "Processing $file for APP: $APP_NAME"
              figlet "$APP_NAME" >> ct/.app-headers
            fi
          done
          
      # Step 6: Commit the changes to .app-headers
      - name: Commit updated .app-headers
        run: |
          git diff --quiet -- ct/.app-headers || git commit -am "[core]: update .app-headers to latest version"
          git push origin update-app-headers --force

      # Step 7: Create Pull Request to merge changes into main
      - name: Create Pull Request if changes detected
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          PR_EXISTS=$(gh pr list --head "update-app-headers" --json number --jq '.[].number')
          if [ -z "$PR_EXISTS" ]; then
            echo "Creating a new PR."
            PR_URL=$(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 --no-edit -q .url)
            echo "PR created: $PR_URL"
          else
            echo "PR already exists."
          fi

      # Step 8: Automatically merge PR
      - name: Automatically merge PR
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          echo "Attempting to merge PR."
          PR_NUMBER=$(gh pr list --head "update-app-headers" --json number --jq '.[].number')
          if [ -n "$PR_NUMBER" ]; then
            gh pr merge "$PR_NUMBER" --merge --admin --delete-branch
            echo "PR merged successfully."
          else
            echo "No PR found to merge."
          fi

      # Step 9: Final status output
      - name: Output final status
        run: |
          echo "Workflow completed successfully. Branch and PR status updated."