Implemented reset-cfg command

Makefile

@@ -65,6 +65,13 @@ clean-ctx : build		## Remove context list from Kubernetes configuration
 rename-ctx : build		## Rename specified context in Kubernetes configuration
 	$(KONF_PREFIX) konf rename-ctx --kube-config ./examples/config context_a NEW_context_a
 
+reset-cfg-local : build		## Reset local Kubernetes configuration (current shell)
+	@echo "It's useless to run an 'eval' command from the Makefile as each line is executed in a new shell instance"
+	@echo "Please manually execute 'eval $(konf reset-cfg local)'"
+	@echo ""
+
+reset-cfg-global : build		## Reset global Kubernetes configuration
+	$(KONF_PREFIX) konf reset-cfg global --kube-config ./examples/config
 
 ## helpers
 

README.md

@@ -43,6 +43,10 @@ make build
 
 `konf rename-ctx <context-to-rename> <new-context-name>` renames the specified context in Kubernetes configuration (per default in `~/.kube/config` Kubernetes configuration if not otherwise specified)
 
+`eval $(konf reset-cfg local)` resets the local (current shell) Kubernetes configuration, un-setting `KUBECONFIG` environment variable
+
+`konf reset-cfg global` resets `currentContext` to N/A in Kubernetes configuration (per default in `~/.kube/config` Kubernetes configuration if not otherwise specified)
+
 `konf completion [bash | zsh]` outputs the auto-completion script for the selected. See [auto-completion](#auto-completion) section below.
 
 `konf help` shows the helper
@@ -239,8 +243,8 @@ konf
 - [x] clean-ctx (remove specified context and relatives from kubernetes configuration)
 - [x] rename-ctx (rename specified context in kubernetes configuration)
 - [ ] reset-cfg
-    - [ ] reset-cfg local removing KUBECONFIG environment variable
-    - [ ] reset-cfg global ? to default ~/.kube/config
+    - [ ] reset-cfg local removes KUBECONFIG environment variable
+    - [ ] reset-cfg global resets currentContext to N/A in Kubernetes configuration
 
 ---
 

application/konf.go

@@ -1,6 +1,7 @@
 package application
 
 import (
+	"github.com/bygui86/konf/commands/reset"
 	"os"
 	"sort"
 
@@ -55,6 +56,7 @@ func addCommands(app *cli.App) {
 		*set.BuildCommand(),
 		*clean.BuildCommand(),
 		*rename.BuildCommand(),
+		*reset.BuildCommand(),
 		*completion.BuildCommand(),
 	}
 }

commands/reset/action.go

@@ -1,18 +1,44 @@
 package reset
 
 import (
+	"fmt"
+	"github.com/bygui86/konf/commands"
+	"github.com/bygui86/konf/commons"
+	"github.com/bygui86/konf/kubeconfig"
 	"github.com/urfave/cli"
 
 	"github.com/bygui86/konf/logger"
 )
 
-func reset(ctx *cli.Context) error {
+func resetLocal(ctx *cli.Context) error {
+	logger.Logger.Debug("")
+	logger.Logger.Debug("🐛 Executing RESET-CFG-LOCAL command")
+	logger.Logger.Debug("")
+
+	logger.Logger.Info(fmt.Sprintf("unset %s", commons.KubeConfigEnvVar))
+	return nil
+}
+
+func resetGlobal(ctx *cli.Context) error {
 	logger.Logger.Info("")
-	logger.Logger.Debug("🐛 Executing RESET command")
+	logger.Logger.Debug("🐛 Executing RESET-CFG-GLOBAL command")
 	logger.Logger.Debug("")
 
-	logger.Logger.Warn("⚠️ Command not yet implemented ☢️")
+	logger.Logger.Debug("🐛 Get Kubernetes configuration file path")
+	kubeConfigFilePath := ctx.String(commons.CustomKubeConfigFlagName)
+	logger.SugaredLogger.Infof("📖 Load Kubernetes configuration from '%s'", kubeConfigFilePath)
+	kubeConfig := kubeconfig.Load(kubeConfigFilePath)
+	// INFO: no need to check if kubeConfig is nil, because the inner method called will exit if it does not find the configuration file
+
+	logger.SugaredLogger.Debugf("♻️ Reset Kubernetes configuration '%s'", kubeConfigFilePath)
+	kubeConfig.CurrentContext = ""
+
+	valWrErr := commands.ValidateAndWrite(kubeConfig, kubeConfigFilePath)
+	if valWrErr != nil {
+		return valWrErr
+	}
 
+	logger.SugaredLogger.Infof("✅ Completed! Kubernetes configuration reset")
 	logger.Logger.Info("")
 	return nil
 }

commands/reset/command.go

@@ -1,16 +1,42 @@
 package reset
 
 import (
+	"github.com/bygui86/konf/commons"
+	"github.com/bygui86/konf/kubeconfig"
+	"github.com/bygui86/konf/utils"
 	"github.com/urfave/cli"
 
 	"github.com/bygui86/konf/logger"
 )
 
 func BuildCommand() *cli.Command {
-	logger.Logger.Debug("🐛 Create RESET command")
+	logger.Logger.Debug("🐛 Create RESET-CONFIG command")
+	home := utils.GetHomeDirOrExit("reset-cfg")
 	return &cli.Command{
-		Name:   "reset",
-		Usage:  "",
-		Action: reset,
+		Name:   "reset-cfg",
+		Usage:  "Reset local or global Kubernetes configuration",
+		Subcommands: cli.Commands{
+			{
+				Name:   "local",
+				Usage:  "Reset local Kubernetes configuration (current shell)",
+				ArgsUsage: "<context>",
+				Action: resetLocal,
+			},
+			{
+				Name:   "global",
+				Usage:  "Reset global Kubernetes configuration",
+				ArgsUsage: "<context>",
+				Action: resetGlobal,
+				Flags: []cli.Flag{
+					cli.StringFlag{
+						Name:     utils.GetUrfaveFlagName(commons.CustomKubeConfigFlagName, commons.CustomKubeConfigFlagShort),
+						Usage:    commons.CustomKubeConfigFlagDescription,
+						EnvVar:   commons.CustomKubeConfigPathEnvVar,
+						Value:    kubeconfig.GetCustomKubeConfigPathDefault(home),
+						Required: false,
+					},
+				},
+			},
+		},
 	}
 }