refactor: remove db package and move database logic to service layer

cmd/show.go

@@ -1,7 +1,6 @@
 package cmd
 
 import (
-	"axolotl/db"
 	"axolotl/output"
 	"axolotl/service"
 	"fmt"
@@ -13,14 +12,13 @@ import (
 var showCmd = &cobra.Command{
 	Use: "show <id>", Short: "Show node details", Args: cobra.ExactArgs(1),
 	Run: func(cmd *cobra.Command, args []string) {
-		d, err := db.GetDB()
+		svc, err := service.GetNodeService(cfg)
 		if err != nil {
 			fmt.Fprintln(os.Stderr, err)
 			return
 		}
-		svc := service.NewSQLiteNodeService(d.DB, cfg.GetUser())
 		if n, err := svc.GetByID(args[0]); err == nil {
-			output.PrintNode(cmd.OutOrStdout(), n, jsonFlag)
+			output.PrintNode(cmd.OutOrStdout(), svc, n, jsonFlag)
 		} else {
 			fmt.Fprintln(os.Stderr, "node not found:", args[0])
 		}