only show what is available

Signed-off-by: Hadi <[email protected]>

internal/audio/wpctl.go

@@ -31,6 +31,14 @@ func CheckAvailable() error {
 	return nil
 }
 
+// Installed reports whether wpctl is present in PATH, without probing
+// PipeWire. Cheap enough to call when deciding whether to show the Audio
+// page in the sidebar.
+func Installed() bool {
+	_, err := exec.LookPath("wpctl")
+	return err == nil
+}
+
 func run(args ...string) (string, error) {
 	ctx, cancel := context.WithTimeout(context.Background(), defaultTimeout)
 	defer cancel()

internal/bluetooth/bluetoothctl.go

@@ -39,6 +39,14 @@ func CheckAvailable() error {
 	return nil
 }
 
+// Installed reports whether bluetoothctl is present in PATH, without
+// probing for a controller. Cheap enough to call when deciding whether to
+// show the Bluetooth page in the sidebar.
+func Installed() bool {
+	_, err := exec.LookPath("bluetoothctl")
+	return err == nil
+}
+
 // run executes bluetoothctl in single-command (non-interactive) mode.
 // bluetoothctl writes both normal output and error messages to stdout
 // (colored with ANSI escapes), so errors are extracted from there rather

internal/input/hyprctl.go

@@ -22,6 +22,14 @@ func CheckAvailable() error {
 	return err
 }
 
+// Installed reports whether hyprctl is present in PATH, without probing
+// Hyprland. Cheap enough to call when deciding whether to show the Inputs
+// page in the sidebar.
+func Installed() bool {
+	_, err := exec.LookPath("hyprctl")
+	return err == nil
+}
+
 func Reset() error {
 	_, err := run("reload")
 	return err

internal/network/nmcli.go

@@ -36,6 +36,14 @@ func CheckAvailable() error {
 	return nil
 }
 
+// Installed reports whether nmcli is present in PATH, without probing
+// NetworkManager. Cheap enough to call when deciding whether to show the
+// Network page in the sidebar.
+func Installed() bool {
+	_, err := exec.LookPath("nmcli")
+	return err == nil
+}
+
 func run(args ...string) (string, error) {
 	ctx, cancel := context.WithTimeout(context.Background(), defaultTimeout)
 	defer cancel()

internal/power/profiles.go

@@ -36,6 +36,14 @@ func CheckAvailable() error {
 	return err
 }
 
+// Installed reports whether powerprofilesctl is present in PATH, without
+// probing power-profiles-daemon. Cheap enough to call when deciding whether
+// to show the Power page in the sidebar.
+func Installed() bool {
+	_, err := exec.LookPath("powerprofilesctl")
+	return err == nil
+}
+
 // ListProfiles returns the available profiles in the order reported by
 // powerprofilesctl, each flagged with whether it's currently active.
 func ListProfiles() ([]Profile, error) {

internal/ui/app/model.go

@@ -20,10 +20,9 @@ import (
 )
 
 // buildPageShortcuts numbers the visible pages 1..N in sidebar order, so
-// hiding a page never leaves a gap in the shortcuts. It must run after
-// config.Load, hence a function called from New rather than a package var.
-func buildPageShortcuts() map[string]page {
-	visible := visiblePages()
+// hiding a page (or a missing CLI tool) never leaves a gap in the
+// shortcuts.
+func buildPageShortcuts(visible []pageEntry) map[string]page {
 	m := make(map[string]page, len(visible))
 	for i, e := range visible {
 		m[strconv.Itoa(i+1)] = e.id
@@ -34,6 +33,7 @@ func buildPageShortcuts() map[string]page {
 type Model struct {
 	page          page
 	pageShortcuts map[string]page
+	visiblePages  []pageEntry
 	logPath       string
 	fatalErr      error
 	logFileErr    error
@@ -67,10 +67,12 @@ func New(initialPage string) (Model, error) {
 	}
 
 	cfg := config.Global
+	visible := visiblePages()
 
 	m := Model{
 		page:          startPage,
-		pageShortcuts: buildPageShortcuts(),
+		pageShortcuts: buildPageShortcuts(visible),
+		visiblePages:  visible,
 		about:         aboutUI.New(),
 		network:       networkUI.New(),
 		bluetooth:     bluetoothUI.New(),

internal/ui/app/pages.go

@@ -4,8 +4,13 @@ import (
 	"strings"
 
 	tea "charm.land/bubbletea/v2"
+	"github.com/anotherhadi/settuings/internal/audio"
+	"github.com/anotherhadi/settuings/internal/bluetooth"
 	"github.com/anotherhadi/settuings/internal/config"
 	"github.com/anotherhadi/settuings/internal/icons"
+	"github.com/anotherhadi/settuings/internal/input"
+	"github.com/anotherhadi/settuings/internal/network"
+	"github.com/anotherhadi/settuings/internal/power"
 	aboutUI "github.com/anotherhadi/settuings/internal/ui/about"
 	audioUI "github.com/anotherhadi/settuings/internal/ui/audio"
 	bluetoothUI "github.com/anotherhadi/settuings/internal/ui/bluetooth"
@@ -30,6 +35,12 @@ type pageEntry struct {
 	id   page
 	icon func() string
 
+	// available reports whether this page's underlying CLI tool is
+	// installed. nil = always available (e.g. About has no dependency).
+	// A page that isn't available is left out of the sidebar and its
+	// numbered shortcuts, but stays reachable via --page.
+	available func() bool
+
 	// render returns the page's view content. nil = show "empty".
 	render func(m *Model) string
 	// update is called when this page is active. nil = no-op.
@@ -68,6 +79,7 @@ var pageRegistry = []pageEntry{
 	{
 		id:        pageNetwork,
 		icon:      func() string { return icons.I.Network },
+		available: network.Installed,
 
 		render: func(m *Model) string { return m.network.View().Content },
 		update: func(m *Model, msg tea.Msg) tea.Cmd {
@@ -82,6 +94,7 @@ var pageRegistry = []pageEntry{
 	{
 		id:        pageBluetooth,
 		icon:      func() string { return icons.I.Bluetooth },
+		available: bluetooth.Installed,
 
 		render: func(m *Model) string { return m.bluetooth.View().Content },
 		update: func(m *Model, msg tea.Msg) tea.Cmd {
@@ -96,6 +109,7 @@ var pageRegistry = []pageEntry{
 	{
 		id:        pageAudio,
 		icon:      func() string { return icons.I.Audio },
+		available: audio.Installed,
 
 		render: func(m *Model) string { return m.audio.View().Content },
 		update: func(m *Model, msg tea.Msg) tea.Cmd {
@@ -111,6 +125,7 @@ var pageRegistry = []pageEntry{
 	{
 		id:        pagePower,
 		icon:      func() string { return icons.I.Power },
+		available: power.Installed,
 
 		render: func(m *Model) string { return m.power.View().Content },
 		update: func(m *Model, msg tea.Msg) tea.Cmd {
@@ -125,6 +140,7 @@ var pageRegistry = []pageEntry{
 	{
 		id:        pageInputs,
 		icon:      func() string { return icons.I.Inputs },
+		available: input.Installed,
 
 		render: func(m *Model) string { return m.input.View().Content },
 		update: func(m *Model, msg tea.Msg) tea.Cmd {
@@ -160,30 +176,30 @@ func lookupPage(name string) (page, bool) {
 }
 
 // visiblePages returns pageRegistry entries not listed in the user's
-// tui.hidden_pages config, preserving registry order. A page hidden this
-// way is still reachable via --page: hiding only affects the sidebar and
-// its numbered shortcuts.
+// tui.hidden_pages config and whose underlying CLI tool (if any) is
+// installed, preserving registry order. A page left out this way is still
+// reachable via --page: this only affects the sidebar and its numbered
+// shortcuts. It shells out to `exec.LookPath` per page, so callers should
+// compute it once (e.g. in New) and cache the result rather than calling it
+// on every render.
 func visiblePages() []pageEntry {
 	hiddenNames := config.Global.TUI.HiddenPages
-	if len(hiddenNames) == 0 {
-		return pageRegistry
-	}
-
 	hidden := make(map[page]bool, len(hiddenNames))
 	for _, name := range hiddenNames {
 		if p, ok := lookupPage(name); ok {
 			hidden[p] = true
 		}
 	}
-	if len(hidden) == 0 {
-		return pageRegistry
-	}
 
 	visible := make([]pageEntry, 0, len(pageRegistry))
 	for _, e := range pageRegistry {
-		if !hidden[e.id] {
-			visible = append(visible, e)
+		if hidden[e.id] {
+			continue
 		}
+		if e.available != nil && !e.available() {
+			continue
+		}
+		visible = append(visible, e)
 	}
 	return visible
 }

internal/ui/app/sidebar.go

@@ -62,7 +62,7 @@ func (m *Model) renderSidebar() string {
 	var items strings.Builder
 	badgeUnread := lipgloss.NewStyle().Foreground(ilovetui.S.Warning).Bold(true)
 
-	for i, entry := range visiblePages() {
+	for i, entry := range m.visiblePages {
 		selected := entry.id == m.page
 		badgeStyle, textStyle := badgeNormal, textNormal
 		if selected {