feat: make 'templates update [name]' optional (#2761)

- If the name is not specified the current working directory
  name is used or the name specified by "--directory". This
  reflects 'templates create" behavior.

cli/templateupdate.go

@@ -3,6 +3,7 @@ package cli
 import (
 	"fmt"
 	"os"
+	"path/filepath"
 	"time"
 
 	"github.com/briandowns/spinner"
@@ -24,8 +25,8 @@ func templateUpdate() *cobra.Command {
 	)
 
 	cmd := &cobra.Command{
-		Use:   "update <template>",
-		Args:  cobra.ExactArgs(1),
+		Use:   "update [template]",
+		Args:  cobra.MaximumNArgs(1),
 		Short: "Update the source-code of a template from the current directory or as specified by flag",
 		RunE: func(cmd *cobra.Command, args []string) error {
 			client, err := createClient(cmd)
@@ -36,7 +37,13 @@ func templateUpdate() *cobra.Command {
 			if err != nil {
 				return err
 			}
-			template, err := client.TemplateByName(cmd.Context(), organization.ID, args[0])
+
+			name := filepath.Base(directory)
+			if len(args) > 0 {
+				name = args[0]
+			}
+
+			template, err := client.TemplateByName(cmd.Context(), organization.ID, name)
 			if err != nil {
 				return err
 			}