Add 'snapshots' command.

litestream.go

@@ -13,6 +13,7 @@ import (
 	"regexp"
 	"strconv"
 	"strings"
+	"time"
 
 	_ "github.com/mattn/go-sqlite3"
 )
@@ -40,6 +41,15 @@ var (
 	ErrNoSnapshots = errors.New("no snapshots available")
 )
 
+// SnapshotInfo represents file information about a snapshot.
+type SnapshotInfo struct {
+	Name       string
+	Replica    string
+	Generation string
+	Index      int
+	CreatedAt  time.Time
+}
+
 // Pos is a position in the WAL for a generation.
 type Pos struct {
 	Generation string // generation name