vaultik/internal/cli/snapshot.go

package cli

import (
	"context"
	"fmt"
	"os"

	"github.com/spf13/cobra"
	"go.uber.org/fx"
	"sneak.berlin/go/vaultik/internal/log"
	"sneak.berlin/go/vaultik/internal/vaultik"
)

// NewSnapshotCommand creates the snapshot command and subcommands
func NewSnapshotCommand() *cobra.Command {
	cmd := &cobra.Command{
		Use:   "snapshot",
		Short: "Snapshot management commands",
		Long:  "Commands for creating, listing, and managing snapshots",
	}

	// Add subcommands
	cmd.AddCommand(newSnapshotCreateCommand())
	cmd.AddCommand(newSnapshotListCommand())
	cmd.AddCommand(newSnapshotPurgeCommand())
	cmd.AddCommand(newSnapshotVerifyCommand())
	cmd.AddCommand(newSnapshotRemoveCommand())
	cmd.AddCommand(newSnapshotPruneCommand())
	cmd.AddCommand(newSnapshotCleanupCommand())

	return cmd
}

// newSnapshotCreateCommand creates the 'snapshot create' subcommand
func newSnapshotCreateCommand() *cobra.Command {
	opts := &vaultik.SnapshotCreateOptions{}

	cmd := &cobra.Command{
		Use:   "create [snapshot-names...]",
		Short: "Create new snapshots",
		Long: `Creates new snapshots of the configured directories.

If snapshot names are provided, only those snapshots are created.
If no names are provided, all configured snapshots are created.

Config is located at /etc/vaultik/config.yml by default, but can be overridden by
specifying a path using --config or by setting VAULTIK_CONFIG to a path.`,
		Args: cobra.ArbitraryArgs,
		RunE: func(cmd *cobra.Command, args []string) error {
			// Pass snapshot names from args
			opts.Snapshots = args
			// Use unified config resolution
			configPath, err := ResolveConfigPath()
			if err != nil {
				return err
			}

			// Use the backup functionality from cli package
			rootFlags := GetRootFlags()
			return RunWithApp(cmd.Context(), AppOptions{
				ConfigPath: configPath,
				LogOptions: log.LogOptions{
					Verbose: rootFlags.Verbose,
					Debug:   rootFlags.Debug,
					Cron:    opts.Cron,
					Quiet:   rootFlags.Quiet,
				},
				Modules: []fx.Option{},
				Invokes: []fx.Option{
					fx.Invoke(func(v *vaultik.Vaultik, lc fx.Lifecycle) {
						lc.Append(fx.Hook{
							OnStart: func(ctx context.Context) error {
								// Start the snapshot creation in a goroutine
								go func() {
									// --cron suppression is wired through v.UI by setupGlobals.
									if err := v.CreateSnapshot(opts); err != nil {
										if err != context.Canceled {
											log.Error("Snapshot creation failed", "error", err)
											os.Exit(1)
										}
									}

									// Shutdown the app when snapshot completes
									if err := v.Shutdowner.Shutdown(); err != nil {
										log.Error("Failed to shutdown", "error", err)
									}
								}()
								return nil
							},
							OnStop: func(ctx context.Context) error {
								log.Debug("Stopping snapshot creation")
								// Cancel the Vaultik context
								v.Cancel()
								return nil
							},
						})
					}),
				},
			})
		},
	}

	cmd.Flags().BoolVar(&opts.Cron, "cron", false, "Run in cron mode (silent unless error)")
	cmd.Flags().BoolVar(&opts.Prune, "prune", false, "After backup, drop older snapshots of the same name and remove orphaned blobs")
	cmd.Flags().StringVar(&opts.KeepNewerThan, "keep-newer-than", "", "With --prune: keep snapshots newer than this duration (e.g. 4w, 30d, 6mo) instead of only the latest")
	cmd.Flags().BoolVar(&opts.SkipErrors, "skip-errors", false, "Skip file read errors (log them loudly but continue)")

	return cmd
}

// newSnapshotListCommand creates the 'snapshot list' subcommand
func newSnapshotListCommand() *cobra.Command {
	var jsonOutput bool

	cmd := &cobra.Command{
		Use:     "list",
		Aliases: []string{"ls"},
		Short:   "List all snapshots",
		Long:    "Lists all snapshots with their ID, timestamp, and compressed size",
		Args:    cobra.NoArgs,
		RunE: func(cmd *cobra.Command, args []string) error {
			// Use unified config resolution
			configPath, err := ResolveConfigPath()
			if err != nil {
				return err
			}

			rootFlags := GetRootFlags()
			return RunWithApp(cmd.Context(), AppOptions{
				ConfigPath: configPath,
				LogOptions: log.LogOptions{
					Verbose: rootFlags.Verbose,
					Debug:   rootFlags.Debug,
					Quiet:   rootFlags.Quiet,
				},
				Modules: []fx.Option{},
				Invokes: []fx.Option{
					fx.Invoke(func(v *vaultik.Vaultik, lc fx.Lifecycle) {
						lc.Append(fx.Hook{
							OnStart: func(ctx context.Context) error {
								go func() {
									if err := v.ListSnapshots(jsonOutput); err != nil {
										if err != context.Canceled {
											log.Error("Failed to list snapshots", "error", err)
											os.Exit(1)
										}
									}
									if err := v.Shutdowner.Shutdown(); err != nil {
										log.Error("Failed to shutdown", "error", err)
									}
								}()
								return nil
							},
							OnStop: func(ctx context.Context) error {
								v.Cancel()
								return nil
							},
						})
					}),
				},
			})
		},
	}

	cmd.Flags().BoolVar(&jsonOutput, "json", false, "Output in JSON format")

	return cmd
}

// newSnapshotPurgeCommand creates the 'snapshot purge' subcommand
func newSnapshotPurgeCommand() *cobra.Command {
	opts := &vaultik.SnapshotPurgeOptions{}

	cmd := &cobra.Command{
		Use:   "purge",
		Short: "Purge old snapshots",
		Long: `Removes snapshots based on age or count criteria.

Retention is per-snapshot-name: --keep-latest keeps the latest of each
configured snapshot name, not the latest globally. Use --snapshot to
restrict the operation to specific snapshot names.`,
		Args: cobra.NoArgs,
		RunE: func(cmd *cobra.Command, args []string) error {
			// Validate flags
			if !opts.KeepLatest && opts.OlderThan == "" {
				return fmt.Errorf("must specify either --keep-latest or --older-than")
			}
			if opts.KeepLatest && opts.OlderThan != "" {
				return fmt.Errorf("cannot specify both --keep-latest and --older-than")
			}

			// Use unified config resolution
			configPath, err := ResolveConfigPath()
			if err != nil {
				return err
			}

			rootFlags := GetRootFlags()
			return RunWithApp(cmd.Context(), AppOptions{
				ConfigPath: configPath,
				LogOptions: log.LogOptions{
					Verbose: rootFlags.Verbose,
					Debug:   rootFlags.Debug,
					Quiet:   rootFlags.Quiet,
				},
				Modules: []fx.Option{},
				Invokes: []fx.Option{
					fx.Invoke(func(v *vaultik.Vaultik, lc fx.Lifecycle) {
						lc.Append(fx.Hook{
							OnStart: func(ctx context.Context) error {
								go func() {
									if err := v.PurgeSnapshotsWithOptions(opts); err != nil {
										if err != context.Canceled {
											log.Error("Failed to purge snapshots", "error", err)
											os.Exit(1)
										}
									}
									if err := v.Shutdowner.Shutdown(); err != nil {
										log.Error("Failed to shutdown", "error", err)
									}
								}()
								return nil
							},
							OnStop: func(ctx context.Context) error {
								v.Cancel()
								return nil
							},
						})
					}),
				},
			})
		},
	}

	cmd.Flags().BoolVar(&opts.KeepLatest, "keep-latest", false, "Keep only the latest snapshot of each name")
	cmd.Flags().StringVar(&opts.OlderThan, "older-than", "", "Remove snapshots older than duration (e.g., 30d, 6m, 1y)")
	cmd.Flags().BoolVar(&opts.Force, "force", false, "Skip confirmation prompt")
	cmd.Flags().StringArrayVar(&opts.Names, "snapshot", nil, "Restrict to snapshots with these names (repeat for multiple)")

	return cmd
}

// newSnapshotVerifyCommand creates the 'snapshot verify' subcommand
func newSnapshotVerifyCommand() *cobra.Command {
	opts := &vaultik.VerifyOptions{}

	cmd := &cobra.Command{
		Use:   "verify <snapshot-id>",
		Short: "Verify snapshot integrity",
		Long:  "Verifies that all blobs referenced in a snapshot exist",
		Args: func(cmd *cobra.Command, args []string) error {
			if len(args) != 1 {
				_ = cmd.Help()
				if len(args) == 0 {
					return fmt.Errorf("snapshot ID required")
				}
				return fmt.Errorf("expected 1 argument, got %d", len(args))
			}
			return nil
		},
		RunE: func(cmd *cobra.Command, args []string) error {
			snapshotID := args[0]

			// Use unified config resolution
			configPath, err := ResolveConfigPath()
			if err != nil {
				return err
			}

			rootFlags := GetRootFlags()
			return RunWithApp(cmd.Context(), AppOptions{
				ConfigPath: configPath,
				LogOptions: log.LogOptions{
					Verbose: rootFlags.Verbose,
					Debug:   rootFlags.Debug,
					Quiet:   rootFlags.Quiet || opts.JSON,
				},
				Modules: []fx.Option{},
				Invokes: []fx.Option{
					fx.Invoke(func(v *vaultik.Vaultik, lc fx.Lifecycle) {
						lc.Append(fx.Hook{
							OnStart: func(ctx context.Context) error {
								go func() {
									if err := v.VerifySnapshotWithOptions(snapshotID, opts); err != nil {
										if err != context.Canceled {
											if !opts.JSON {
												log.Error("Verification failed", "error", err)
											}
											os.Exit(1)
										}
									}
									if err := v.Shutdowner.Shutdown(); err != nil {
										log.Error("Failed to shutdown", "error", err)
									}
								}()
								return nil
							},
							OnStop: func(ctx context.Context) error {
								v.Cancel()
								return nil
							},
						})
					}),
				},
			})
		},
	}

	cmd.Flags().BoolVar(&opts.Deep, "deep", false, "Download and verify blob hashes")
	cmd.Flags().BoolVar(&opts.JSON, "json", false, "Output verification results as JSON")

	return cmd
}

// newSnapshotRemoveCommand creates the 'snapshot remove' subcommand
func newSnapshotRemoveCommand() *cobra.Command {
	opts := &vaultik.RemoveOptions{}

	cmd := &cobra.Command{
		Use:     "remove [snapshot-id]",
		Aliases: []string{"rm"},
		Short:   "Remove a snapshot from the local database",
		Long: `Removes a snapshot from the local database.

By default, only removes from the local database. Use --remote to also remove
the snapshot metadata from remote storage.

Note: This does NOT remove blobs. Use 'vaultik prune' to remove orphaned blobs
after removing snapshots.

Use --all --force to remove all snapshots.`,
		Args: func(cmd *cobra.Command, args []string) error {
			all, _ := cmd.Flags().GetBool("all")
			if all {
				if len(args) > 0 {
					_ = cmd.Help()
					return fmt.Errorf("--all cannot be used with a snapshot ID")
				}
				return nil
			}
			if len(args) != 1 {
				_ = cmd.Help()
				if len(args) == 0 {
					return fmt.Errorf("snapshot ID required (or use --all --force)")
				}
				return fmt.Errorf("expected 1 argument, got %d", len(args))
			}
			return nil
		},
		RunE: func(cmd *cobra.Command, args []string) error {
			// Use unified config resolution
			configPath, err := ResolveConfigPath()
			if err != nil {
				return err
			}

			rootFlags := GetRootFlags()
			return RunWithApp(cmd.Context(), AppOptions{
				ConfigPath: configPath,
				LogOptions: log.LogOptions{
					Verbose: rootFlags.Verbose,
					Debug:   rootFlags.Debug,
					Quiet:   rootFlags.Quiet || opts.JSON,
				},
				Modules: []fx.Option{},
				Invokes: []fx.Option{
					fx.Invoke(func(v *vaultik.Vaultik, lc fx.Lifecycle) {
						lc.Append(fx.Hook{
							OnStart: func(ctx context.Context) error {
								go func() {
									var err error
									if opts.All {
										_, err = v.RemoveAllSnapshots(opts)
									} else {
										_, err = v.RemoveSnapshot(args[0], opts)
									}
									if err != nil {
										if err != context.Canceled {
											if !opts.JSON {
												log.Error("Failed to remove snapshot", "error", err)
											}
											os.Exit(1)
										}
									}
									if err := v.Shutdowner.Shutdown(); err != nil {
										log.Error("Failed to shutdown", "error", err)
									}
								}()
								return nil
							},
							OnStop: func(ctx context.Context) error {
								v.Cancel()
								return nil
							},
						})
					}),
				},
			})
		},
	}

	cmd.Flags().BoolVarP(&opts.Force, "force", "f", false, "Skip confirmation prompt")
	cmd.Flags().BoolVar(&opts.DryRun, "dry-run", false, "Show what would be removed without removing")
	cmd.Flags().BoolVar(&opts.JSON, "json", false, "Output result as JSON")
	cmd.Flags().BoolVar(&opts.Remote, "remote", false, "Also remove snapshot metadata from remote storage")
	cmd.Flags().BoolVar(&opts.All, "all", false, "Remove all snapshots (requires --force)")

	return cmd
}

// newSnapshotPruneCommand creates the 'snapshot prune' subcommand
func newSnapshotPruneCommand() *cobra.Command {
	cmd := &cobra.Command{
		Use:   "prune",
		Short: "Remove orphaned data from local database",
		Long: `Removes orphaned files, chunks, and blobs from the local database.

This cleans up data that is no longer referenced by any snapshot, which can
accumulate from incomplete backups or deleted snapshots.`,
		Args: cobra.NoArgs,
		RunE: func(cmd *cobra.Command, args []string) error {
			// Use unified config resolution
			configPath, err := ResolveConfigPath()
			if err != nil {
				return err
			}

			rootFlags := GetRootFlags()
			return RunWithApp(cmd.Context(), AppOptions{
				ConfigPath: configPath,
				LogOptions: log.LogOptions{
					Verbose: rootFlags.Verbose,
					Debug:   rootFlags.Debug,
					Quiet:   rootFlags.Quiet,
				},
				Modules: []fx.Option{},
				Invokes: []fx.Option{
					fx.Invoke(func(v *vaultik.Vaultik, lc fx.Lifecycle) {
						lc.Append(fx.Hook{
							OnStart: func(ctx context.Context) error {
								go func() {
									if _, err := v.PruneDatabase(); err != nil {
										if err != context.Canceled {
											log.Error("Failed to prune database", "error", err)
											os.Exit(1)
										}
									}
									if err := v.Shutdowner.Shutdown(); err != nil {
										log.Error("Failed to shutdown", "error", err)
									}
								}()
								return nil
							},
							OnStop: func(ctx context.Context) error {
								v.Cancel()
								return nil
							},
						})
					}),
				},
			})
		},
	}

	return cmd
}

// newSnapshotCleanupCommand creates the 'snapshot cleanup' subcommand
func newSnapshotCleanupCommand() *cobra.Command {
	cmd := &cobra.Command{
		Use:   "cleanup",
		Short: "Remove stale local snapshot records not found in remote storage",
		Long: `Removes local database records for snapshots whose metadata no longer
exists in remote storage. These are typically left behind by incomplete
or interrupted backups.

This command does not delete anything from remote storage.`,
		Args: cobra.NoArgs,
		RunE: func(cmd *cobra.Command, args []string) error {
			configPath, err := ResolveConfigPath()
			if err != nil {
				return err
			}

			rootFlags := GetRootFlags()
			return RunWithApp(cmd.Context(), AppOptions{
				ConfigPath: configPath,
				LogOptions: log.LogOptions{
					Verbose: rootFlags.Verbose,
					Debug:   rootFlags.Debug,
					Quiet:   rootFlags.Quiet,
				},
				Modules: []fx.Option{},
				Invokes: []fx.Option{
					fx.Invoke(func(v *vaultik.Vaultik, lc fx.Lifecycle) {
						lc.Append(fx.Hook{
							OnStart: func(ctx context.Context) error {
								go func() {
									if err := v.CleanupLocalSnapshots(); err != nil {
										if err != context.Canceled {
											log.Error("Cleanup failed", "error", err)
											os.Exit(1)
										}
									}
									if err := v.Shutdowner.Shutdown(); err != nil {
										log.Error("Failed to shutdown", "error", err)
									}
								}()
								return nil
							},
							OnStop: func(ctx context.Context) error {
								v.Cancel()
								return nil
							},
						})
					}),
				},
			})
		},
	}

	return cmd
}