config unset; config set tweaks (#188)

cmd/zrok/configSet.go

@@ -58,5 +58,7 @@ func (cmd *configSetCommand) run(_ *cobra.Command, args []string) {
 		if zrd.Env != nil && configName == "apiEndpoint" {
 			fmt.Printf("\n[%v]: because you have a %v-d environment, you won't see your config change until you run %v first!\n\n", tui.WarningLabel, tui.Code.Render("zrok enable"), tui.Code.Render("zrok disable"))
 		}
+	} else {
+		fmt.Println("zrok configuration not changed")
 	}
 }

cmd/zrok/configUnset.go

@@ -0,0 +1,62 @@
+package main
+
+import (
+	"fmt"
+	"github.com/openziti/zrok/tui"
+	"github.com/openziti/zrok/zrokdir"
+	"github.com/spf13/cobra"
+	"os"
+)
+
+func init() {
+	configCmd.AddCommand(newConfigUnsetCommand().cmd)
+}
+
+type configUnsetCommand struct {
+	cmd *cobra.Command
+}
+
+func newConfigUnsetCommand() *configUnsetCommand {
+	cmd := &cobra.Command{
+		Use:   "unset <configName>",
+		Short: "Unset a value from the environment config",
+		Args:  cobra.ExactArgs(1),
+	}
+	command := &configUnsetCommand{cmd: cmd}
+	cmd.Run = command.run
+	return command
+}
+
+func (cmd *configUnsetCommand) run(_ *cobra.Command, args []string) {
+	configName := args[0]
+
+	zrd, err := zrokdir.Load()
+	if err != nil {
+		panic(err)
+	}
+
+	modified := false
+	switch configName {
+	case "apiEndpoint":
+		if zrd.Cfg != nil && zrd.Cfg.ApiEndpoint != "" {
+			zrd.Cfg.ApiEndpoint = ""
+			modified = true
+		}
+
+	default:
+		fmt.Printf("unknown config name '%v'\n", configName)
+		os.Exit(1)
+	}
+
+	if modified {
+		if err := zrd.Save(); err != nil {
+			panic(err)
+		}
+		fmt.Println("zrok configuration updated")
+		if zrd.Env != nil && configName == "apiEndpoint" {
+			fmt.Printf("\n[%v]: because you have a %v-d environment, you won't see your config change until you run %v first!\n\n", tui.WarningLabel, tui.Code.Render("zrok enable"), tui.Code.Render("zrok disable"))
+		}
+	} else {
+		fmt.Println("zrok configuration not changed")
+	}
+}