feat: add shell completions for context and namespace names (#175)

* feat: Add shell completions for context and namespace names

* Trigger CI

* fix

Author: mircea-pavel-anton

cmd/context.go

@@ -10,10 +10,11 @@ import (
 var contextManager = kubeconfig.NewContextManager(manager)
 
 var contextCmd = &cobra.Command{
-	Use:     "context",
-	Aliases: []string{"ctx"},
-	Short:   "Switch the active Kubernetes context",
-	Args:    cobra.MaximumNArgs(1),
+	Use:               "context",
+	Aliases:           []string{"ctx"},
+	Short:             "Switch the active Kubernetes context",
+	ValidArgsFunction: getContextCompletions,
+	Args:              cobra.MaximumNArgs(1),
 	Run: func(cmd *cobra.Command, args []string) {
 		// Validate and get the config directory
 		validConfigDir, err := contextManager.ValidateConfigDir(configDir)
@@ -61,3 +62,19 @@ var contextCmd = &cobra.Command{
 func init() {
 	rootCmd.AddCommand(contextCmd)
 }
+
+// getContextCompletions provides bash completion for available contexts
+func getContextCompletions(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
+	configDirFlag, _ := cmd.Flags().GetString("kubeconfig-dir")
+	validConfigDir, err := contextManager.ValidateConfigDir(configDirFlag)
+	if err != nil {
+		return nil, cobra.ShellCompDirectiveNoFileComp
+	}
+
+	_, contextNames, err := contextManager.GetContextsFromDir(validConfigDir)
+	if err != nil {
+		return nil, cobra.ShellCompDirectiveNoFileComp
+	}
+
+	return contextNames, cobra.ShellCompDirectiveNoFileComp
+}

cmd/namespace.go

@@ -10,10 +10,11 @@ import (
 var namespaceManager = kubeconfig.NewNamespaceManager(manager)
 
 var namespaceCmd = &cobra.Command{
-	Use:     "namespace",
-	Aliases: []string{"ns"},
-	Short:   "Switch the active Kubernetes namespace",
-	Args:    cobra.MaximumNArgs(1),
+	Use:               "namespace",
+	Aliases:           []string{"ns"},
+	Short:             "Switch the active Kubernetes namespace",
+	Args:              cobra.MaximumNArgs(1),
+	ValidArgsFunction: getNamespaceCompletions,
 	Run: func(cmd *cobra.Command, args []string) {
 		// Get all namespaces from the current context
 		namespaceNames, err := namespaceManager.GetNamespaces()
@@ -48,3 +49,13 @@ var namespaceCmd = &cobra.Command{
 func init() {
 	rootCmd.AddCommand(namespaceCmd)
 }
+
+// getNamespaceCompletions provides bash completion for available namespaces
+func getNamespaceCompletions(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
+	namespaceNames, err := namespaceManager.GetNamespaces()
+	if err != nil {
+		return nil, cobra.ShellCompDirectiveNoFileComp
+	}
+
+	return namespaceNames, cobra.ShellCompDirectiveNoFileComp
+}

cmd/root.go

@@ -15,7 +15,10 @@ var (
 )
 
 var rootCmd = &cobra.Command{
-	Use:     "kubectl-switch",
+	Use: "kubectl-switch",
+	Annotations: map[string]string{
+		cobra.CommandDisplayNameAnnotation: "kubectl switch",
+	},
 	Short:   "A tool to switch Kubernetes contexts",
 	Long:    `kubectl-switch is a CLI tool to switch Kubernetes contexts from multiple kubeconfig files.`,
 	Version: version,