name: Backup Docker Volumes

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

jobs:
  backup:
    runs-on: ubuntu-latest

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

      - name: Debug - List available volumes
        run: |
          echo "Available Docker volumes:"
          docker volume ls
          echo ""
          echo "Looking for gitea-related volumes:"
          docker volume ls | grep -i gitea || echo "No gitea volumes found with grep"

      - name: Create backup directory
        run: |
          BACKUP_DATE=$(date +%Y%m%d_%H%M%S)
          echo "BACKUP_DATE=$BACKUP_DATE" >> $GITHUB_ENV
          mkdir -p backups/$BACKUP_DATE
          echo "Backup directory created: $(pwd)/backups/$BACKUP_DATE"

      - name: Backup Gitea Data Volume
        run: |
          # Finde den korrekten Volume-Namen
          VOLUME_NAME=$(docker volume ls --format '{{.Name}}' | grep 'gitea-data$' | head -n1)
          if [ -z "$VOLUME_NAME" ]; then
            echo "ERROR: gitea-data volume not found!"
            exit 1
          fi
          echo "Found volume: $VOLUME_NAME"
          docker run --rm \
            -v "$VOLUME_NAME":/source:ro \
            -v $(pwd)/backups/$BACKUP_DATE:/backup \
            alpine tar czf /backup/gitea-data.tar.gz -C /source .
          ls -lh backups/$BACKUP_DATE/gitea-data.tar.gz

      - name: Backup Gitea Database Volume
        run: |
          VOLUME_NAME=$(docker volume ls --format '{{.Name}}' | grep 'gitea-database$' | head -n1)
          if [ -z "$VOLUME_NAME" ]; then
            echo "ERROR: gitea-database volume not found!"
            exit 1
          fi
          echo "Found volume: $VOLUME_NAME"
          docker run --rm \
            -v "$VOLUME_NAME":/source:ro \
            -v $(pwd)/backups/$BACKUP_DATE:/backup \
            alpine tar czf /backup/gitea-database.tar.gz -C /source .
          ls -lh backups/$BACKUP_DATE/gitea-database.tar.gz

      - name: Backup MinIO Data Volume
        run: |
          VOLUME_NAME=$(docker volume ls --format '{{.Name}}' | grep 'minio-data$' | head -n1)
          if [ -z "$VOLUME_NAME" ]; then
            echo "ERROR: minio-data volume not found!"
            exit 1
          fi
          echo "Found volume: $VOLUME_NAME"
          docker run --rm \
            -v "$VOLUME_NAME":/source:ro \
            -v $(pwd)/backups/$BACKUP_DATE:/backup \
            alpine tar czf /backup/minio-data.tar.gz -C /source .
          ls -lh backups/$BACKUP_DATE/minio-data.tar.gz

      - name: Backup Gitea Runner Data Volume
        run: |
          VOLUME_NAME=$(docker volume ls --format '{{.Name}}' | grep 'gitea-runner-data$' | head -n1)
          if [ -z "$VOLUME_NAME" ]; then
            echo "ERROR: gitea-runner-data volume not found!"
            exit 1
          fi
          echo "Found volume: $VOLUME_NAME"
          docker run --rm \
            -v "$VOLUME_NAME":/source:ro \
            -v $(pwd)/backups/$BACKUP_DATE:/backup \
            alpine tar czf /backup/gitea-runner-data.tar.gz -C /source .
          ls -lh backups/$BACKUP_DATE/gitea-runner-data.tar.gz

      - name: Create backup manifest
        run: |
          cd backups/$BACKUP_DATE
          cat > manifest.txt << EOF
          Backup created: $(date)
          Backup date: $BACKUP_DATE

          Files:
          $(ls -lh)

          Checksums (SHA256):
          $(sha256sum *.tar.gz)
          EOF
          cat manifest.txt

      - name: Upload backup artifacts
        uses: actions/upload-artifact@v4
        with:
          name: docker-volumes-backup-${{ env.BACKUP_DATE }}
          path: backups/${{ env.BACKUP_DATE }}/
          retention-days: 30

      - name: Cleanup and summary
        run: |
          echo "Backup completed successfully!"
          echo "Total backup size: $(du -sh backups/$BACKUP_DATE)"
          rm -rf backups/