feat(list-dbs): initial listdbscommand

cmd/list-dbs.go

@@ -0,0 +1,51 @@
+/*
+Copyright © 2025 Lewis Wynne <lew@ily.rs>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+package cmd
+
+import (
+	"fmt"
+	"github.com/spf13/cobra"
+)
+
+// delCmd represents the set command
+var listDbsCmd = &cobra.Command{
+	Use:   "list-dbs",
+	Short: "List all dbs.",
+	Args:  cobra.NoArgs,
+	RunE:  listDbs,
+}
+
+func listDbs(cmd *cobra.Command, args []string) error {
+	store := &Store{}
+	dbs, err := store.AllStores()
+	if err != nil {
+		return err
+	}
+	for _, db := range dbs {
+		fmt.Println("@" + db)
+	}
+	return nil
+}
+
+func init() {
+	rootCmd.AddCommand(listDbsCmd)
+}

cmd/shared.go

@@ -35,6 +35,40 @@ import (
 
 type Store struct{}
 
+type TransactionArgs struct {
+	key      string
+	readonly bool
+	sync     bool
+	transact func(tx *badger.Txn, key []byte) error
+}
+
+func (s *Store) Transaction(args TransactionArgs) error {
+	k, dbName, err := s.parse(args.key)
+	if err != nil {
+		return err
+	}
+
+	db, err := s.open(dbName)
+	if err != nil {
+		return err
+	}
+	defer db.Close()
+
+	if args.sync {
+		err = db.Sync()
+		if err != nil {
+			return err
+		}
+	}
+
+	tx := db.NewTransaction(!args.readonly)
+	if err := args.transact(tx, k); err != nil {
+		tx.Discard()
+		return err
+	}
+	return tx.Commit()
+}
+
 func (s *Store) parse(k string) ([]byte, string, error) {
 	var key, db string
 	ps := strings.Split(k, "@")
@@ -90,36 +124,20 @@ func (s *Store) Print(pf string, vs ...[]byte) {
 	}
 }
 
-type TransactionArgs struct {
-	key      string
-	readonly bool
-	sync     bool
-	transact func(tx *badger.Txn, key []byte) error
-}
-
-func (s *Store) Transaction(args TransactionArgs) error {
-	k, dbName, err := s.parse(args.key)
-	if err != nil {
-		return err
-	}
-
-	db, err := s.open(dbName)
-	if err != nil {
-		return err
-	}
-	defer db.Close()
-
-	if args.sync {
-		err = db.Sync()
-		if err != nil {
-			return err
-		}
-	}
-
-	tx := db.NewTransaction(!args.readonly)
-	if err := args.transact(tx, k); err != nil {
-		tx.Discard()
-		return err
-	}
-	return tx.Commit()
+func (s *Store) AllStores() ([]string, error) {
+	path, err := s.path()
+	if err != nil {
+		return nil, err
+	}
+	dirs, err := os.ReadDir(path)
+	if err != nil {
+		return nil, err
+	}
+	var stores []string
+	for _, e := range dirs {
+		if e.IsDir() {
+			stores = append(stores, e.Name())
+		}
+	}
+	return stores, nil
 }