Add api command

cmd/sing-box/cmd_api_group_select.go

@@ -0,0 +1,33 @@
+package main
+
+import (
+	"github.com/sagernet/sing-box/daemon"
+
+	"github.com/spf13/cobra"
+)
+
+var commandAPIGroupSelect = &cobra.Command{
+	Use:   "select <group> <outbound>",
+	Short: "Select an outbound in a group",
+	Args:  cobra.ExactArgs(2),
+	RunE: func(cmd *cobra.Command, args []string) error {
+		return runAPIGroupSelect(args[0], args[1])
+	},
+}
+
+func init() {
+	commandAPIGroup.AddCommand(commandAPIGroupSelect)
+}
+
+func runAPIGroupSelect(groupTag string, outboundTag string) error {
+	clientConn, client, err := createAPIClient()
+	if err != nil {
+		return err
+	}
+	defer clientConn.Close()
+	_, err = client.SelectOutbound(globalCtx, &daemon.SelectOutboundRequest{
+		GroupTag:    groupTag,
+		OutboundTag: outboundTag,
+	})
+	return err
+}