name: Build Tags Export

on:
  workflow_dispatch: {}

jobs:
  build-tags:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout Repository
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Fetch tags list
        run: |
          git tag > tags.txt

      - name: Prepare target directory
        run: mkdir -p TARGET

      - name: Checkout all tags and export
        run: |
          while read TAG; do
            echo "Processing tag: $TAG"
            mkdir -p "TARGET/$TAG"

            # Sauber: Clonen aus dem lokalen Checkout
            git clone . "workdir" --branch "$TAG" --depth 1

            cp -a workdir/* "TARGET/$TAG/"
            rm -rf workdir
          done < tags.txt

      - name: Upload as artifact (optional)
        uses: actions/upload-artifact@v3
        with:
          name: all-tags
          path: TARGET/

  publish-pages:
    runs-on: ubuntu-latest
    needs: build-tags

    steps:
      - name: Checkout Repository (for push setup)
        uses: actions/checkout@v4
        with:
          fetch-depth: 1

      - name: Download Artifact
        uses: actions/download-artifact@v3
        with:
          name: all-tags
          path: TAGS_EXPORT

      - name: Git Configure
        run: |
          git config --global user.name "$CI_COMMIT_AUTHOR_NAME"
          git config --global user.email "$CI_COMMIT_AUTHOR_EMAIL"

      - name: Check pages branch
        id: check
        run: |
          if git ls-remote --exit-code origin pages > /dev/null; then
            echo "exists=true" >> $GITHUB_OUTPUT
          else
            echo "exists=false" >> $GITHUB_OUTPUT
          fi

      - name: Clone pages branch into repo/
        run: |
          REPO_URL_BASE="$(echo $GITHUB_SERVER_URL/$GITHUB_REPOSITORY.git | sed 's/^https\?:\/\///')"
          AUTH_URL="https://${{ secrets.PACKAGE_USER }}:${{ secrets.PACKAGE_TOKEN }}@$REPO_URL_BASE"

          echo "::add-mask::$AUTH_URL"
          echo "📡 Klone Repository von: $AUTH_URL"

          if [ "${{ steps.check.outputs.exists }}" = "true" ]; then
            git clone --depth 1 --branch pages "$AUTH_URL" repo
          else
            # Branch existiert nicht → ohne Branch klonen, später orphan erzeugen
            git clone --depth 1 "$AUTH_URL" repo
          fi

      - name: Prepare pages branch
        working-directory: repo
        run: |
          if [ "${{ steps.check.outputs.exists }}" = "true" ]; then
            echo "📥 Checkout existing pages"
            git checkout pages
          else
            echo "🌱 Create orphan"
            git checkout --orphan pages
            git reset --hard
          fi

          # Alles löschen für frischen Inhalt
          rm -rf *

      - name: Copy tag export
        run: cp -a TAGS_EXPORT/* repo/

      - name: Commit
        working-directory: repo
        run: |
          git add -A
          git commit --allow-empty -m "CI: Update Pages ($(date -u +"%Y-%m-%d %H:%M:%S"))" || echo "⚠️ Nothing to commit"

      - name: Set new remote (auth)
        working-directory: repo
        run: |
          REPO_URL_BASE="$(echo $GITHUB_SERVER_URL/$GITHUB_REPOSITORY.git | sed 's/^https\?:\/\///')"
          AUTH_URL="https://${{ secrets.PACKAGE_USER }}:${{ secrets.PACKAGE_TOKEN }}@$REPO_URL_BASE"
          git remote set-url origin "$AUTH_URL"

      - name: Push pages branch
        working-directory: repo
        run: |
          if [ "${{ steps.check.outputs.exists }}" = "true" ]; then
            echo "🚀 Normal push"
            git push origin pages
          else
            echo "⛔ Force push orphan"
            git push origin pages --force
          fi