core: add dynamic completion for more commands (#889)

core/cmd/dms/commands_brightness.go

@@ -28,7 +28,14 @@ var brightnessSetCmd = &cobra.Command{
 	Short: "Set brightness for a device",
 	Long:  "Set brightness percentage (0-100) for a specific device",
 	Args:  cobra.ExactArgs(2),
-	Run:   runBrightnessSet,
+	ValidArgsFunction: func(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
+		if len(args) != 0 {
+			return nil, cobra.ShellCompDirectiveNoFileComp
+		}
+		includeDDC, _ := cmd.Flags().GetBool("ddc")
+		return getBrightnessDevices(includeDDC), cobra.ShellCompDirectiveNoFileComp
+	},
+	Run: runBrightnessSet,
 }
 
 var brightnessGetCmd = &cobra.Command{
@@ -36,7 +43,14 @@ var brightnessGetCmd = &cobra.Command{
 	Short: "Get brightness for a device",
 	Long:  "Get current brightness percentage for a specific device",
 	Args:  cobra.ExactArgs(1),
-	Run:   runBrightnessGet,
+	ValidArgsFunction: func(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
+		if len(args) != 0 {
+			return nil, cobra.ShellCompDirectiveNoFileComp
+		}
+		includeDDC, _ := cmd.Flags().GetBool("ddc")
+		return getBrightnessDevices(includeDDC), cobra.ShellCompDirectiveNoFileComp
+	},
+	Run: runBrightnessGet,
 }
 
 func init() {
@@ -105,9 +119,7 @@ Global Flags:
 	brightnessCmd.AddCommand(brightnessListCmd, brightnessSetCmd, brightnessGetCmd)
 }
 
-func runBrightnessList(cmd *cobra.Command, args []string) {
-	includeDDC, _ := cmd.Flags().GetBool("ddc")
-
+func getAllBrightnessDevices(includeDDC bool) []brightness.Device {
 	allDevices := []brightness.Device{}
 
 	sysfs, err := brightness.NewSysfsBackend()
@@ -138,6 +150,13 @@ func runBrightnessList(cmd *cobra.Command, args []string) {
 		}
 	}
 
+	return allDevices
+}
+
+func runBrightnessList(cmd *cobra.Command, args []string) {
+	includeDDC, _ := cmd.Flags().GetBool("ddc")
+	allDevices := getAllBrightnessDevices(includeDDC)
+
 	if len(allDevices) == 0 {
 		fmt.Println("No brightness devices found")
 		return
@@ -261,31 +280,20 @@ func runBrightnessSet(cmd *cobra.Command, args []string) {
 	log.Fatalf("Failed to set brightness for device: %s", deviceID)
 }
 
+func getBrightnessDevices(includeDDC bool) []string {
+	allDevices := getAllBrightnessDevices(includeDDC)
+
+	var deviceIDs []string
+	for _, device := range allDevices {
+		deviceIDs = append(deviceIDs, device.ID)
+	}
+	return deviceIDs
+}
+
 func runBrightnessGet(cmd *cobra.Command, args []string) {
 	deviceID := args[0]
 	includeDDC, _ := cmd.Flags().GetBool("ddc")
-
-	allDevices := []brightness.Device{}
-
-	sysfs, err := brightness.NewSysfsBackend()
-	if err == nil {
-		devices, err := sysfs.GetDevices()
-		if err == nil {
-			allDevices = append(allDevices, devices...)
-		}
-	}
-
-	if includeDDC {
-		ddc, err := brightness.NewDDCBackend()
-		if err == nil {
-			defer ddc.Close()
-			time.Sleep(100 * time.Millisecond)
-			devices, err := ddc.GetDevices()
-			if err == nil {
-				allDevices = append(allDevices, devices...)
-			}
-		}
-	}
+	allDevices := getAllBrightnessDevices(includeDDC)
 
 	for _, device := range allDevices {
 		if device.ID == deviceID {

core/cmd/dms/commands_common.go

@@ -119,6 +119,12 @@ var pluginsInstallCmd = &cobra.Command{
 	Short: "Install a plugin by ID",
 	Long:  "Install a DMS plugin from the registry using its ID (e.g., 'myPlugin'). Plugin names with spaces are also supported for backward compatibility.",
 	Args:  cobra.ExactArgs(1),
+	ValidArgsFunction: func(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
+		if len(args) != 0 {
+			return nil, cobra.ShellCompDirectiveNoFileComp
+		}
+		return getAvailablePluginIDs(), cobra.ShellCompDirectiveNoFileComp
+	},
 	Run: func(cmd *cobra.Command, args []string) {
 		if err := installPluginCLI(args[0]); err != nil {
 			log.Fatalf("Error installing plugin: %v", err)
@@ -131,6 +137,12 @@ var pluginsUninstallCmd = &cobra.Command{
 	Short: "Uninstall a plugin by ID",
 	Long:  "Uninstall a DMS plugin using its ID (e.g., 'myPlugin'). Plugin names with spaces are also supported for backward compatibility.",
 	Args:  cobra.ExactArgs(1),
+	ValidArgsFunction: func(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
+		if len(args) != 0 {
+			return nil, cobra.ShellCompDirectiveNoFileComp
+		}
+		return getInstalledPluginIDs(), cobra.ShellCompDirectiveNoFileComp
+	},
 	Run: func(cmd *cobra.Command, args []string) {
 		if err := uninstallPluginCLI(args[0]); err != nil {
 			log.Fatalf("Error uninstalling plugin: %v", err)
@@ -303,6 +315,38 @@ func installPluginCLI(idOrName string) error {
 	return nil
 }
 
+func getAvailablePluginIDs() []string {
+	registry, err := plugins.NewRegistry()
+	if err != nil {
+		return nil
+	}
+
+	pluginList, err := registry.List()
+	if err != nil {
+		return nil
+	}
+
+	var ids []string
+	for _, p := range pluginList {
+		ids = append(ids, p.ID)
+	}
+	return ids
+}
+
+func getInstalledPluginIDs() []string {
+	manager, err := plugins.NewManager()
+	if err != nil {
+		return nil
+	}
+
+	installed, err := manager.ListInstalled()
+	if err != nil {
+		return nil
+	}
+
+	return installed
+}
+
 func uninstallPluginCLI(idOrName string) error {
 	manager, err := plugins.NewManager()
 	if err != nil {

core/cmd/dms/commands_dank16.go

@@ -27,6 +27,9 @@ func init() {
 	dank16Cmd.Flags().Bool("wezterm", false, "Output in Wezterm terminal format")
 	dank16Cmd.Flags().String("background", "", "Custom background color")
 	dank16Cmd.Flags().String("contrast", "dps", "Contrast algorithm: dps (Delta Phi Star, default) or wcag")
+	_ = dank16Cmd.RegisterFlagCompletionFunc("contrast", func(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
+		return []string{"dps", "wcag"}, cobra.ShellCompDirectiveNoFileComp
+	})
 }
 
 func runDank16(cmd *cobra.Command, args []string) {

core/cmd/dms/commands_dpms.go

@@ -16,14 +16,26 @@ var dpmsOnCmd = &cobra.Command{
 	Use:   "on [output]",
 	Short: "Turn display(s) on",
 	Args:  cobra.MaximumNArgs(1),
-	Run:   runDPMSOn,
+	ValidArgsFunction: func(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
+		if len(args) != 0 {
+			return nil, cobra.ShellCompDirectiveNoFileComp
+		}
+		return getDPMSOutputs(), cobra.ShellCompDirectiveNoFileComp
+	},
+	Run: runDPMSOn,
 }
 
 var dpmsOffCmd = &cobra.Command{
 	Use:   "off [output]",
 	Short: "Turn display(s) off",
 	Args:  cobra.MaximumNArgs(1),
-	Run:   runDPMSOff,
+	ValidArgsFunction: func(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
+		if len(args) != 0 {
+			return nil, cobra.ShellCompDirectiveNoFileComp
+		}
+		return getDPMSOutputs(), cobra.ShellCompDirectiveNoFileComp
+	},
+	Run: runDPMSOff,
 }
 
 var dpmsListCmd = &cobra.Command{
@@ -71,6 +83,15 @@ func runDPMSOff(cmd *cobra.Command, args []string) {
 	}
 }
 
+func getDPMSOutputs() []string {
+	client, err := newDPMSClient()
+	if err != nil {
+		return nil
+	}
+	defer client.Close()
+	return client.ListOutputs()
+}
+
 func runDPMSList(cmd *cobra.Command, args []string) {
 	client, err := newDPMSClient()
 	if err != nil {

core/cmd/dms/commands_keybinds.go

@@ -30,7 +30,14 @@ var keybindsShowCmd = &cobra.Command{
 	Short: "Show keybinds for a provider",
 	Long:  "Display keybinds/cheatsheet for the specified provider",
 	Args:  cobra.ExactArgs(1),
-	Run:   runKeybindsShow,
+	ValidArgsFunction: func(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
+		if len(args) != 0 {
+			return nil, cobra.ShellCompDirectiveNoFileComp
+		}
+		registry := keybinds.GetDefaultRegistry()
+		return registry.List(), cobra.ShellCompDirectiveNoFileComp
+	},
+	Run: runKeybindsShow,
 }
 
 func init() {

core/cmd/dms/commands_open.go

@@ -45,6 +45,9 @@ func init() {
 	openCmd.Flags().StringVar(&openMimeType, "mime", "", "MIME type for filtering applications")
 	openCmd.Flags().StringSliceVar(&openCategories, "category", []string{}, "Application categories to filter (e.g., WebBrowser, Office, Graphics)")
 	openCmd.Flags().StringVar(&openRequestType, "type", "url", "Request type (url, file, or custom)")
+	_ = openCmd.RegisterFlagCompletionFunc("type", func(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
+		return []string{"url", "file", "custom"}, cobra.ShellCompDirectiveNoFileComp
+	})
 }
 
 // mimeTypeToCategories maps MIME types to desktop file categories