feat: ske kubeconfig merge add flag overwrite

Signed-off-by: Javier Vela <fjvela@gmail.com>

Author: fjvela

docs/stackit_ske_kubeconfig_create.md

@@ -20,7 +20,7 @@ stackit ske kubeconfig create CLUSTER_NAME [flags]
 ### Examples
 
 ```
-  Create a kubeconfig for the SKE cluster with name "my-cluster. If the config exits in the kubeconfig file the information will be updated."
+  Create or update a kubeconfig for the SKE cluster with name "my-cluster. If the config exits in the kubeconfig file the information will be updated."
   $ stackit ske kubeconfig create my-cluster
 
   Get a login kubeconfig for the SKE cluster with name "my-cluster". This kubeconfig does not contain any credentials and instead obtains valid credentials via the `stackit ske kubeconfig login` command.
@@ -37,6 +37,9 @@ stackit ske kubeconfig create CLUSTER_NAME [flags]
 
   Get a kubeconfig for the SKE cluster with name "my-cluster" without writing it to a file and format the output as json
   $ stackit ske kubeconfig create my-cluster --disable-writing --output-format json
+
+  Create a kubeconfig for the SKE cluster with name "my-cluster. It will OVERWRITE your current kubeconfig file."
+  $ stackit ske kubeconfig create my-cluster --overwrite true
 ```
 
 ### Options
@@ -47,6 +50,7 @@ stackit ske kubeconfig create CLUSTER_NAME [flags]
       --filepath string     Path to create the kubeconfig file. By default, the kubeconfig is created as 'config' in the .kube folder, in the user's home directory.
   -h, --help                Help for "stackit ske kubeconfig create"
   -l, --login               Create a login kubeconfig that obtains valid credentials via the STACKIT CLI. This flag is mutually exclusive with the expiration flag.
+      --overwrite           Overwrite the kubeconfig file.
 ```
 
 ### Options inherited from parent commands

internal/cmd/ske/kubeconfig/create/create.go

@@ -22,19 +22,21 @@ import (
 const (
 	clusterNameArg = "CLUSTER_NAME"
 
-	loginFlag          = "login"
+	disableWritingFlag = "disable-writing"
 	expirationFlag     = "expiration"
 	filepathFlag       = "filepath"
-	disableWritingFlag = "disable-writing"
+	loginFlag          = "login"
+	overwrite          = "overwrite"
 )
 
 type inputModel struct {
 	*globalflags.GlobalFlagModel
 	ClusterName    string
-	Filepath       *string
+	DisableWriting bool
 	ExpirationTime *string
+	Filepath       *string
 	Login          bool
-	DisableWriting bool
+	Overwrite      bool
 }
 
 func NewCmd(p *print.Printer) *cobra.Command {
@@ -50,7 +52,7 @@ func NewCmd(p *print.Printer) *cobra.Command {
 		Args: args.SingleArg(clusterNameArg, nil),
 		Example: examples.Build(
 			examples.NewExample(
-				`Create a kubeconfig for the SKE cluster with name "my-cluster. If the config exits in the kubeconfig file the information will be updated."`,
+				`Create or update a kubeconfig for the SKE cluster with name "my-cluster. If the config exits in the kubeconfig file the information will be updated."`,
 				"$ stackit ske kubeconfig create my-cluster"),
 			examples.NewExample(
 				`Get a login kubeconfig for the SKE cluster with name "my-cluster". `+
@@ -68,6 +70,9 @@ func NewCmd(p *print.Printer) *cobra.Command {
 			examples.NewExample(
 				`Get a kubeconfig for the SKE cluster with name "my-cluster" without writing it to a file and format the output as json`,
 				"$ stackit ske kubeconfig create my-cluster --disable-writing --output-format json"),
+			examples.NewExample(
+				`Create a kubeconfig for the SKE cluster with name "my-cluster. It will OVERWRITE your current kubeconfig file."`,
+				"$ stackit ske kubeconfig create my-cluster --overwrite true"),
 		),
 		RunE: func(cmd *cobra.Command, args []string) error {
 			ctx := context.Background()
@@ -83,7 +88,12 @@ func NewCmd(p *print.Printer) *cobra.Command {
 			}
 
 			if !model.AssumeYes && !model.DisableWriting {
-				prompt := fmt.Sprintf("Are you sure you want to update your kubeconfig for SKE cluster %q? This will update your kubeconfig file. \n If it the kubeconfig file doesn´t exists, it will create a new one.", model.ClusterName)
+				var prompt string
+				if model.Overwrite {
+					prompt = fmt.Sprintf("Are you sure you want to create a kubeconfig for SKE cluster %q? This will OVERWRITE your current kubeconfig file, if it exists.", model.ClusterName)
+				} else {
+					prompt = fmt.Sprintf("Are you sure you want to update your kubeconfig for SKE cluster %q? This will update your kubeconfig file. \n If it the kubeconfig file doesn't exists, it will create a new one.", model.ClusterName)
+				}
 				err = p.PromptForConfirmation(prompt)
 				if err != nil {
 					return err
@@ -137,7 +147,11 @@ func NewCmd(p *print.Printer) *cobra.Command {
 			}
 
 			if !model.DisableWriting {
-				err = skeUtils.MergeKubeConfig(kubeconfigPath, kubeconfig)
+				if model.Overwrite {
+					err = skeUtils.WriteConfigFile(kubeconfigPath, kubeconfig)
+				} else {
+					err = skeUtils.MergeKubeConfig(kubeconfigPath, kubeconfig)
+				}
 				if err != nil {
 					return fmt.Errorf("write kubeconfig file: %w", err)
 				}
@@ -152,11 +166,11 @@ func NewCmd(p *print.Printer) *cobra.Command {
 }
 
 func configureFlags(cmd *cobra.Command) {
+	cmd.Flags().Bool(disableWritingFlag, false, fmt.Sprintf("Disable the writing of kubeconfig. Set the output format to json or yaml using the --%s flag to display the kubeconfig.", globalflags.OutputFormatFlag))
 	cmd.Flags().BoolP(loginFlag, "l", false, "Create a login kubeconfig that obtains valid credentials via the STACKIT CLI. This flag is mutually exclusive with the expiration flag.")
-	cmd.Flags().StringP(expirationFlag, "e", "", "Expiration time for the kubeconfig in seconds(s), minutes(m), hours(h), days(d) or months(M). Example: 30d. By default, expiration time is 1h")
 	cmd.Flags().String(filepathFlag, "", "Path to create the kubeconfig file. By default, the kubeconfig is created as 'config' in the .kube folder, in the user's home directory.")
-	cmd.Flags().Bool(disableWritingFlag, false, fmt.Sprintf("Disable the writing of kubeconfig. Set the output format to json or yaml using the --%s flag to display the kubeconfig.", globalflags.OutputFormatFlag))
-
+	cmd.Flags().StringP(expirationFlag, "e", "", "Expiration time for the kubeconfig in seconds(s), minutes(m), hours(h), days(d) or months(M). Example: 30d. By default, expiration time is 1h")
+	cmd.Flags().Bool(overwrite, false, "Overwrite the kubeconfig file.")
 	cmd.MarkFlagsMutuallyExclusive(loginFlag, expirationFlag)
 }
 

internal/cmd/ske/kubeconfig/create/create_test.go

@@ -4,13 +4,12 @@ import (
 	"context"
 	"testing"
 
-	"github.com/stackitcloud/stackit-cli/internal/pkg/globalflags"
-	"github.com/stackitcloud/stackit-cli/internal/pkg/print"
-	"github.com/stackitcloud/stackit-cli/internal/pkg/utils"
-
 	"github.com/google/go-cmp/cmp"
 	"github.com/google/go-cmp/cmp/cmpopts"
 	"github.com/google/uuid"
+	"github.com/stackitcloud/stackit-cli/internal/pkg/globalflags"
+	"github.com/stackitcloud/stackit-cli/internal/pkg/print"
+	"github.com/stackitcloud/stackit-cli/internal/pkg/utils"
 	"github.com/stackitcloud/stackit-sdk-go/services/ske"
 )
 

internal/pkg/services/ske/utils/utils.go

@@ -3,6 +3,7 @@ package utils
 import (
 	"context"
 	"fmt"
+	"maps"
 	"os"
 	"path/filepath"
 	"strconv"
@@ -251,15 +252,9 @@ func MergeKubeConfig(pathDestionationKubeConfig, contentNewKubeConfig string) er
 		return fmt.Errorf("error loading existing kubeconfig: %w", err)
 	}
 
-	for name, authInfo := range newConfig.AuthInfos {
-		existingConfig.AuthInfos[name] = authInfo
-	}
-	for name, context := range newConfig.Contexts {
-		existingConfig.Contexts[name] = context
-	}
-	for name, cluster := range newConfig.Clusters {
-		existingConfig.Clusters[name] = cluster
-	}
+	maps.Copy(existingConfig.AuthInfos, newConfig.AuthInfos)
+	maps.Copy(existingConfig.Contexts, newConfig.Contexts)
+	maps.Copy(existingConfig.Clusters, newConfig.Clusters)
 
 	err = clientcmd.WriteToFile(*existingConfig, pathDestionationKubeConfig)
 	if err != nil {