apiVersion: batch/v1
kind: CronJob
metadata:
  name: hourly-backup
  namespace: oil-calculator
spec:
  schedule: "0 * * * *"  # Every hour
  successfulJobsHistoryLimit: 3
  failedJobsHistoryLimit: 2
  jobTemplate:
    spec:
      template:
        spec:
          containers:
            - name: backup
              image: registry.oci.euphon.net/oil-calculator:latest
              command:
                - sh
                - -c
                - |
                  BACKUP_DIR=/data/backups
                  mkdir -p $BACKUP_DIR
                  DATE=$(date +%Y%m%d_%H%M%S)
                  # Backup SQLite database using .backup for consistency
                  sqlite3 /data/oil_calculator.db ".backup '$BACKUP_DIR/oil_calculator_${DATE}.db'"
                  echo "Backup done: $BACKUP_DIR/oil_calculator_${DATE}.db ($(du -h $BACKUP_DIR/oil_calculator_${DATE}.db | cut -f1))"
                  # Keep last 48 backups (2 days of hourly)
                  ls -t $BACKUP_DIR/oil_calculator_*.db | tail -n +49 | xargs rm -f 2>/dev/null
                  echo "Backups retained: $(ls $BACKUP_DIR/oil_calculator_*.db | wc -l)"
              volumeMounts:
                - name: data
                  mountPath: /data
          volumes:
            - name: data
              persistentVolumeClaim:
                claimName: oil-calculator-data
          restartPolicy: OnFailure
          imagePullSecrets:
            - name: regcred