package backup

import (
	"context"
	"time"
)

// BackupInfo contains metadata about a backup
type BackupInfo struct {
	Host      string
	Source    string    // "local" or "hetzner"
	Path      string    // Full path to backup
	Timestamp time.Time // Last modified time
	SizeBytes int64     // Total size
	HasRoot   bool      // Has /root backup
	HasOpt    bool      // Has /opt backup
	HasEtc    bool      // Has /etc backup
}

// BackupSource defines the interface for backup sources
type BackupSource interface {
	// Name returns the source name
	Name() string

	// List returns available backups for a host (or all hosts if empty)
	List(ctx context.Context, host string) ([]BackupInfo, error)

	// SyncTo syncs backup data to target VM via rsync over SSH
	// targetSSH is user@host, sshKeyPath is path to private key
	SyncTo(ctx context.Context, host string, targetSSH string, sshKeyPath string, dirs []string) error

	// GetPath returns the base path for a host's backup
	GetPath(host string) string

	// Validate checks if backup source is accessible
	Validate(ctx context.Context) error
}

// SupportedDirs lists directories that can be restored
var SupportedDirs = []string{"root", "opt", "etc"}