name: Backup Docker Volumes (All Servers)

on:
  schedule:
    - cron: '0 2 * * *'  # Täglich um 2 Uhr nachts
  workflow_dispatch:  # Manueller Trigger

jobs:
  backup:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        server:
          - name: devops
            host: 10.0.0.175
            user: lars
            exclude_volumes: ""  # Optional: Komma-separierte Liste zum Ausschließen
          # Weitere Server können hier hinzugefügt werden:
          # - name: production
          #   host: 10.0.0.180
          #   user: ubuntu
          #   exclude_volumes: "temp-volume,cache-volume"
      fail-fast: false  # Andere Server weiterlaufen lassen wenn einer fehlschlägt

    name: Backup ${{ matrix.server.name }}

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Setup SSH
        run: |
          mkdir -p ~/.ssh
          echo "${{ secrets.SSH_PRIVATE_KEY }}" > ~/.ssh/id_rsa
          chmod 600 ~/.ssh/id_rsa
          ssh-keyscan -H ${{ matrix.server.host }} >> ~/.ssh/known_hosts

      - name: Upload backup script to server
        run: |
          scp scripts/backup-servers/backup-docker-volumes.sh \
            ${{ matrix.server.user }}@${{ matrix.server.host }}:/tmp/backup-docker-volumes.sh

          ssh ${{ matrix.server.user }}@${{ matrix.server.host }} \
            "chmod +x /tmp/backup-docker-volumes.sh"

      - name: Create backup on ${{ matrix.server.name }}
        run: |
          BACKUP_DATE=$(date +%Y%m%d_%H%M%S)
          echo "BACKUP_DATE=$BACKUP_DATE" >> $GITHUB_ENV

          EXCLUDE_VOLUMES="${{ matrix.server.exclude_volumes }}"
          ssh ${{ matrix.server.user }}@${{ matrix.server.host }} \
            "BACKUP_DATE='$BACKUP_DATE' SERVER_NAME='${{ matrix.server.name }}' EXCLUDE_VOLUMES='$EXCLUDE_VOLUMES' /tmp/backup-docker-volumes.sh"

      - name: Download backups from ${{ matrix.server.name }}
        run: |
          mkdir -p backups/${{ matrix.server.name }}

          echo "Downloading backups from ${{ matrix.server.name }}..."
          scp -r ${{ matrix.server.user }}@${{ matrix.server.host }}:~/backups/${{ env.BACKUP_DATE }} \
            backups/${{ matrix.server.name }}/

          echo "Downloaded files:"
          ls -lh backups/${{ matrix.server.name }}/${{ env.BACKUP_DATE }}/

      - name: Upload backup artifacts
        uses: actions/upload-artifact@v3
        with:
          name: backup-${{ matrix.server.name }}-${{ env.BACKUP_DATE }}
          path: backups/${{ matrix.server.name }}/${{ env.BACKUP_DATE }}
          retention-days: 30

      - name: Cleanup old backups on ${{ matrix.server.name }} (keep last 7 days)
        if: always()
        run: |
          ssh ${{ matrix.server.user }}@${{ matrix.server.host }} << 'CLEANUP_EOF'
            # Lösche Backups älter als 7 Tage
            find ~/backups -maxdepth 1 -type d -name "????????_??????" -mtime +7 -exec rm -rf {} \; 2>/dev/null || true
            echo "Old backups cleaned up (kept last 7 days)"
            echo "Current backups:"
            ls -lh ~/backups/ 2>/dev/null || echo "No backups found"
          CLEANUP_EOF

      - name: Cleanup temporary files
        if: always()
        run: |
          ssh ${{ matrix.server.user }}@${{ matrix.server.host }} "rm -f /tmp/backup-docker-volumes.sh" || true