v0.0.2

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

README.md

@@ -16,17 +16,10 @@
 <!-- START doctoc generated TOC please keep comment here to allow auto update -->
 <!-- DON'T EDIT THIS SECTION, INSTEAD RE-RUN doctoc TO UPDATE -->
 
-- [What is Spilltea?](#what-is-settuings)
-- [Legal Disclaimer](#legal-disclaimer)
+- [What is SetTUIngs?](#what-is-settuings)
 - [Features](#features)
 - [Installation](#installation)
-- [Project Management](#project-management)
-- [Configuration](#configuration)
-  - [Per-project configuration](#per-project-configuration)
 - [CLI Flags](#cli-flags)
-- [Plugin System](#plugin-system)
-- [Vim / Neovim Integration](#vim--neovim-integration)
-- [Deployment](#deployment)
 - [Tech Stack](#tech-stack)
 
 <!-- END doctoc generated TOC please keep comment here to allow auto update -->
@@ -43,6 +36,7 @@ SetTUIngs is a keyboard-driven TUI for the everyday Linux system settings you'd
 - **Ethernet & VPN**: Bring interfaces up or down and connect to VPN profiles from the same Network page.
 - **Bluetooth**: Discover, pair, connect, trust, and forget devices, and power the adapter on/off.
 - **Audio**: Adjust output/input volume, mute, and pick the default speaker or mic; preview a device with a test tone or a live input-level meter; control the volume of individual apps (browser tab, Spotify, etc.) independently.
+- **Power**: Switch power profiles (performance, balanced, power-saver) and check battery charge, health, and time remaining at a glance.
 - **Vim-like Navigation**: The entire interface is keyboard-driven with Vim-inspired shortcuts. Use `h/j/k/l` to move, `gg`/`G` to jump to the top/bottom, `/` to search, `q` to close panels, and more. All keybindings are fully customizable via the config file.
 
 ## Installation
@@ -87,27 +81,19 @@ environment.systemPackages = [ inputs.settuings.packages.${pkgs.system}.default
 ## CLI Flags
 
 <!-- exec: echo '```' && go run ./cmd/settuings -h && echo '```' -->
-
 ```
-A minimal, terminal-based HTTP(S) proxy for pentesters and CTF players.
+A TUI to manage your Linux system settings like wifi, bluetooth, and more, without leaving the terminal.
 
 Usage:
-  spilltea [flags]
+  settuings [flags]
 
 Flags:
-      --add-default-config      copy the default config file to the config path and exit
-      --add-default-plugins     copy built-in example plugins into the plugins dir and exit
-  -c, --config string           path to config file
-  -h, --help                    help for spilltea
-      --host string             proxy host (overrides config)
-      --plugins-dir string      path to plugins dir (overrides config)
-  -p, --port int                proxy port (overrides config)
-  -P, --project string          project name to open directly, or "tmp" for a temporary session
-      --ssl-insecure            skip TLS certificate verification (overrides config)
-      --upstream-proxy string   upstream proxy URL, e.g. http://user:pass@host:8888 (overrides config)
-  -v, --version                 version for spilltea
+      --add-default-config   copy the default config file to the config path and exit
+  -c, --config string        path to config file
+  -h, --help                 help for settuings
+  -p, --page string          page to open at launch (About, Network, Bluetooth, Audio, Power)
+  -v, --version              version for settuings
 ```
-
 <!-- endexec -->
 
 ## Tech Stack

internal/config/config.go

@@ -23,8 +23,9 @@ type Config struct {
 	} `mapstructure:"app"`
 
 	TUI struct {
-		UseNerdfontIcons    bool   `mapstructure:"use_nerdfont_icons"`
-		DefaultSidebarState string `mapstructure:"default_sidebar_state"`
+		UseNerdfontIcons    bool     `mapstructure:"use_nerdfont_icons"`
+		DefaultSidebarState string   `mapstructure:"default_sidebar_state"`
+		HiddenPages         []string `mapstructure:"hidden_pages"`
 	} `mapstructure:"tui"`
 
 	Keybindings Keybindings `mapstructure:"keybindings"`

internal/config/default_config.yaml

@@ -4,6 +4,7 @@ app:
 tui:
   use_nerdfont_icons: true
   default_sidebar_state: "expanded" # hidden, collapsed, expanded
+  hidden_pages: [] # page names to hide from the sidebar, e.g. ["Audio", "Power"]
 
 keybindings:
   global:
@@ -54,3 +55,7 @@ keybindings:
     refresh: "r"
     mute: "m"
     test: "t"
+
+  power:
+    select: "enter"
+    refresh: "r"

internal/config/keybindings.go

@@ -54,10 +54,16 @@ type AudioKeys struct {
 	Test    string `mapstructure:"test"`
 }
 
+type PowerKeys struct {
+	Select  string `mapstructure:"select"`
+	Refresh string `mapstructure:"refresh"`
+}
+
 type Keybindings struct {
 	Global    GlobalKeys    `mapstructure:"global"`
 	Docs      DocsKeys      `mapstructure:"docs"`
 	Network   NetworkKeys   `mapstructure:"network"`
 	Bluetooth BluetoothKeys `mapstructure:"bluetooth"`
 	Audio     AudioKeys     `mapstructure:"audio"`
+	Power     PowerKeys     `mapstructure:"power"`
 }

internal/icons/icons.go

@@ -11,6 +11,7 @@ type Icons struct {
 	Network   string
 	Bluetooth string
 	Audio     string
+	Power     string
 
 	Wifi     string
 	Ethernet string
@@ -18,9 +19,10 @@ type Icons struct {
 	Check    string
 	Lock     string
 
-	Output string
-	Input  string
-	Apps   string
+	Output  string
+	Input   string
+	Apps    string
+	Battery string
 }
 
 var I *Icons
@@ -36,6 +38,7 @@ func Init(cfg *config.Config) {
 			Network:   "󰛳 ",
 			Bluetooth: "󰂯 ",
 			Audio:     "󰓃 ",
+			Power:     "󰐥 ",
 
 			Wifi:     "󰤨 ",
 			Ethernet: "󰈀 ",
@@ -43,9 +46,10 @@ func Init(cfg *config.Config) {
 			Check:    "󰄬 ",
 			Lock:     "󰌾 ",
 
-			Output: "󰕾 ",
-			Input:  "󰍬 ",
-			Apps:   "󰀻 ",
+			Output:  "󰕾 ",
+			Input:   "󰍬 ",
+			Apps:    "󰀻 ",
+			Battery: "󰁹 ",
 		}
 	} else {
 		I = &Icons{}

internal/keys/keys.go

@@ -13,6 +13,7 @@ type KeyMap struct {
 	Network   NetworkKeyMap
 	Bluetooth BluetoothKeyMap
 	Audio     AudioKeyMap
+	Power     PowerKeyMap
 }
 
 var Keys *KeyMap
@@ -25,6 +26,7 @@ func Init(cfg *config.Config) {
 		Network:   newNetworkKeyMap(kb.Network),
 		Bluetooth: newBluetoothKeyMap(kb.Bluetooth),
 		Audio:     newAudioKeyMap(kb.Audio),
+		Power:     newPowerKeyMap(kb.Power),
 	}
 }
 

internal/keys/power.go

@@ -0,0 +1,22 @@
+package keys
+
+import (
+	"charm.land/bubbles/v2/key"
+	"github.com/anotherhadi/settuings/internal/config"
+)
+
+type PowerKeyMap struct {
+	Select  key.Binding
+	Refresh key.Binding
+}
+
+func newPowerKeyMap(cfg config.PowerKeys) PowerKeyMap {
+	return PowerKeyMap{
+		Select:  binding(cfg.Select, "apply profile"),
+		Refresh: binding(cfg.Refresh, "refresh"),
+	}
+}
+
+func (p PowerKeyMap) Bindings() []key.Binding {
+	return []key.Binding{p.Select, p.Refresh}
+}

internal/power/battery.go

@@ -0,0 +1,175 @@
+package power
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+	"sort"
+	"strconv"
+	"strings"
+)
+
+const powerSupplyPath = "/sys/class/power_supply"
+
+// Battery holds the readable state of one system battery. Peripheral
+// batteries (mouse, keyboard, ...) report scope "Device" in sysfs and are
+// filtered out by ReadBatteries.
+type Battery struct {
+	Name         string
+	Status       string // Charging, Discharging, Full, Not charging, Unknown
+	Capacity     int    // percent, 0-100; -1 if unavailable
+	Health       int    // percent of design capacity still available; -1 if unavailable
+	TimeToEmpty  string // formatted estimate ("2h15m"); empty if not computable
+	TimeToFull   string
+	Technology   string
+	CycleCount   int // -1 if unavailable
+	Manufacturer string
+	Model        string
+}
+
+// ACStatus reports whether external power (AC adapter, USB-PD, dock, ...)
+// is present and delivering power.
+type ACStatus struct {
+	Present bool
+	Online  bool
+}
+
+// ReadBatteries scans /sys/class/power_supply for system battery devices.
+func ReadBatteries() ([]Battery, error) {
+	entries, err := os.ReadDir(powerSupplyPath)
+	if err != nil {
+		return nil, err
+	}
+
+	var batteries []Battery
+	for _, e := range entries {
+		dir := filepath.Join(powerSupplyPath, e.Name())
+		if readAttr(dir, "type") != "Battery" {
+			continue
+		}
+		if readAttr(dir, "scope") == "Device" {
+			continue // peripheral battery (mouse, keyboard, ...), not this machine's
+		}
+		if readAttr(dir, "present") == "0" {
+			continue
+		}
+		batteries = append(batteries, readBattery(dir, e.Name()))
+	}
+	sort.Slice(batteries, func(i, j int) bool { return batteries[i].Name < batteries[j].Name })
+	return batteries, nil
+}
+
+func readBattery(dir, name string) Battery {
+	status := readAttrDefault(dir, "status", "Unknown")
+
+	// Prefer energy_* (µWh); fall back to charge_* (µAh) for fuel gauges
+	// that only report the latter. The ratio math below (percent, hours)
+	// is unit-agnostic as long as full/now/rate come from the same family.
+	full := readAttrInt(dir, "energy_full", 0)
+	design := readAttrInt(dir, "energy_full_design", 0)
+	now := readAttrInt(dir, "energy_now", 0)
+	rate := readAttrInt(dir, "power_now", 0)
+	if full == 0 {
+		full = readAttrInt(dir, "charge_full", 0)
+		design = readAttrInt(dir, "charge_full_design", 0)
+		now = readAttrInt(dir, "charge_now", 0)
+		rate = readAttrInt(dir, "current_now", 0)
+	}
+
+	capacity := readAttrInt(dir, "capacity", -1)
+	if capacity < 0 && full > 0 {
+		capacity = now * 100 / full
+	}
+
+	health := -1
+	if full > 0 && design > 0 {
+		health = full * 100 / design
+	}
+
+	b := Battery{
+		Name:         name,
+		Status:       status,
+		Capacity:     capacity,
+		Health:       health,
+		Technology:   readAttr(dir, "technology"),
+		CycleCount:   readAttrInt(dir, "cycle_count", -1),
+		Manufacturer: readAttr(dir, "manufacturer"),
+		Model:        readAttr(dir, "model_name"),
+	}
+
+	if rate > 0 {
+		switch status {
+		case "Discharging":
+			b.TimeToEmpty = formatHours(float64(now) / float64(rate))
+		case "Charging":
+			if full > now {
+				b.TimeToFull = formatHours(float64(full-now) / float64(rate))
+			}
+		}
+	}
+
+	return b
+}
+
+// ReadAC reports whether any Mains/USB power-supply device is present, and
+// whether at least one of them is actively delivering power. Desktops with
+// no AC-detection device at all get a zero-value, not-present ACStatus.
+func ReadAC() (ACStatus, error) {
+	entries, err := os.ReadDir(powerSupplyPath)
+	if err != nil {
+		return ACStatus{}, err
+	}
+
+	var status ACStatus
+	for _, e := range entries {
+		dir := filepath.Join(powerSupplyPath, e.Name())
+		t := readAttr(dir, "type")
+		if t != "Mains" && t != "USB" {
+			continue
+		}
+		online := readAttr(dir, "online")
+		if online == "" {
+			continue
+		}
+		status.Present = true
+		if online == "1" {
+			status.Online = true
+		}
+	}
+	return status, nil
+}
+
+func formatHours(hours float64) string {
+	if hours <= 0 {
+		return ""
+	}
+	totalMinutes := int(hours*60 + 0.5)
+	return fmt.Sprintf("%dh%02dm", totalMinutes/60, totalMinutes%60)
+}
+
+func readAttr(dir, name string) string {
+	data, err := os.ReadFile(filepath.Join(dir, name)) // #nosec G304 -- dir is enumerated from /sys/class/power_supply, name is a fixed attribute
+	if err != nil {
+		return ""
+	}
+	return strings.TrimSpace(string(data))
+}
+
+func readAttrDefault(dir, name, def string) string {
+	if v := readAttr(dir, name); v != "" {
+		return v
+	}
+	return def
+}
+
+func readAttrInt(dir, name string, def int) int {
+	v := readAttr(dir, name)
+	if v == "" {
+		return def
+	}
+	n, err := strconv.Atoi(v)
+	if err != nil {
+		return def
+	}
+	return n
+}

internal/power/profiles.go

@@ -0,0 +1,103 @@
+// Package power reads and controls the active power profile (via
+// powerprofilesctl / power-profiles-daemon) and reports battery/AC status.
+// Profile control shells out to a CLI tool, in the same spirit as the
+// bluetooth and audio packages; battery status has no universally-installed
+// CLI equivalent, so it's read directly from /sys/class/power_supply.
+package power
+
+import (
+	"bytes"
+	"context"
+	"errors"
+	"fmt"
+	"os/exec"
+	"strings"
+	"time"
+)
+
+var ErrNotFound = errors.New("powerprofilesctl not found in PATH")
+
+const defaultTimeout = 15 * time.Second
+
+// Profile is one entry from `powerprofilesctl list`.
+type Profile struct {
+	Name   string
+	Active bool
+}
+
+// CheckAvailable reports whether powerprofilesctl is installed and
+// power-profiles-daemon is reachable. Call it before using the rest of
+// this file's functions.
+func CheckAvailable() error {
+	if _, err := exec.LookPath("powerprofilesctl"); err != nil {
+		return ErrNotFound
+	}
+	_, err := run("get")
+	return err
+}
+
+// ListProfiles returns the available profiles in the order reported by
+// powerprofilesctl, each flagged with whether it's currently active.
+func ListProfiles() ([]Profile, error) {
+	out, err := run("list")
+	if err != nil {
+		return nil, err
+	}
+
+	var profiles []Profile
+	for _, line := range strings.Split(out, "\n") {
+		// Top-level profile entries are indented two spaces (or "* " when
+		// active); their attribute lines (Driver:, Degraded:, ...) are
+		// indented four, so those are skipped here.
+		if line == "" || strings.HasPrefix(line, "    ") {
+			continue
+		}
+
+		active := false
+		trimmed := line
+		switch {
+		case strings.HasPrefix(trimmed, "* "):
+			active = true
+			trimmed = trimmed[2:]
+		case strings.HasPrefix(trimmed, "  "):
+			trimmed = trimmed[2:]
+		default:
+			continue
+		}
+
+		name := strings.TrimSuffix(trimmed, ":")
+		if name == "" {
+			continue
+		}
+		profiles = append(profiles, Profile{Name: name, Active: active})
+	}
+	return profiles, nil
+}
+
+// SetActive switches the active power profile.
+func SetActive(name string) error {
+	_, err := run("set", name)
+	return err
+}
+
+func run(args ...string) (string, error) {
+	ctx, cancel := context.WithTimeout(context.Background(), defaultTimeout)
+	defer cancel()
+
+	cmd := exec.CommandContext(ctx, "powerprofilesctl", args...) // #nosec G204 -- args are fixed powerprofilesctl subcommands or profile names read back from `powerprofilesctl list`, never shell-interpreted
+	var stdout, stderr bytes.Buffer
+	cmd.Stdout = &stdout
+	cmd.Stderr = &stderr
+
+	if err := cmd.Run(); err != nil {
+		if errors.Is(err, exec.ErrNotFound) {
+			return "", ErrNotFound
+		}
+		msg := strings.TrimSpace(stderr.String())
+		if msg == "" {
+			msg = err.Error()
+		}
+		return "", fmt.Errorf("powerprofilesctl %s: %s", strings.Join(args, " "), msg)
+	}
+	return stdout.String(), nil
+}

internal/ui/app/model.go

@@ -14,22 +14,28 @@ import (
 	bluetoothUI "github.com/anotherhadi/settuings/internal/ui/bluetooth"
 	notificationsUI "github.com/anotherhadi/settuings/internal/ui/components/notifications"
 	networkUI "github.com/anotherhadi/settuings/internal/ui/network"
+	powerUI "github.com/anotherhadi/settuings/internal/ui/power"
 	"github.com/sirupsen/logrus"
 )
 
-var pageShortcuts = func() map[string]page {
-	m := make(map[string]page, len(pageRegistry))
-	for i, e := range pageRegistry {
+// 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()
+	m := make(map[string]page, len(visible))
+	for i, e := range visible {
 		m[strconv.Itoa(i+1)] = e.id
 	}
 	return m
-}()
+}
 
 type Model struct {
-	page       page
-	logPath    string
-	fatalErr   error
-	logFileErr error
+	page          page
+	pageShortcuts map[string]page
+	logPath       string
+	fatalErr      error
+	logFileErr    error
 
 	width         int
 	height        int
@@ -38,6 +44,7 @@ type Model struct {
 	network       networkUI.Model
 	bluetooth     bluetoothUI.Model
 	audio         audioUI.Model
+	power         powerUI.Model
 	notifications notificationsUI.Model
 }
 
@@ -61,10 +68,12 @@ func New(initialPage string) (Model, error) {
 
 	m := Model{
 		page:          startPage,
+		pageShortcuts: buildPageShortcuts(),
 		about:         aboutUI.New(),
 		network:       networkUI.New(),
 		bluetooth:     bluetoothUI.New(),
 		audio:         audioUI.New(),
+		power:         powerUI.New(),
 		notifications: notificationsUI.New(),
 		sidebarState:  sidebarState(cfg.TUI.DefaultSidebarState),
 		logPath:       logPath,
@@ -83,7 +92,7 @@ func New(initialPage string) (Model, error) {
 func (m Model) FatalErr() error { return m.fatalErr }
 
 func (m Model) Init() tea.Cmd {
-	cmds := []tea.Cmd{m.about.Init(), m.network.Init(), m.bluetooth.Init(), m.audio.Init()}
+	cmds := []tea.Cmd{m.about.Init(), m.network.Init(), m.bluetooth.Init(), m.audio.Init(), m.power.Init()}
 	if m.page != pageAbout {
 		cmds = append(cmds, m.activatePage(m.page))
 	}

internal/ui/app/pages.go

@@ -4,11 +4,13 @@ import (
 	"strings"
 
 	tea "charm.land/bubbletea/v2"
+	"github.com/anotherhadi/settuings/internal/config"
 	"github.com/anotherhadi/settuings/internal/icons"
 	aboutUI "github.com/anotherhadi/settuings/internal/ui/about"
 	audioUI "github.com/anotherhadi/settuings/internal/ui/audio"
 	bluetoothUI "github.com/anotherhadi/settuings/internal/ui/bluetooth"
 	networkUI "github.com/anotherhadi/settuings/internal/ui/network"
+	powerUI "github.com/anotherhadi/settuings/internal/ui/power"
 )
 
 type page string
@@ -18,6 +20,7 @@ const (
 	pageNetwork   page = "Network"
 	pageBluetooth page = "Bluetooth"
 	pageAudio     page = "Audio"
+	pagePower     page = "Power"
 )
 
 // pageEntry describes a page and all its integration hooks.
@@ -103,6 +106,20 @@ var pageRegistry = []pageEntry{
 		activate:   func(m *Model) tea.Cmd { return m.audio.Activate() },
 		deactivate: func(m *Model) { m.audio.Deactivate() },
 	},
+	{
+		id:   pagePower,
+		icon: func() string { return icons.I.Power },
+
+		render: func(m *Model) string { return m.power.View().Content },
+		update: func(m *Model, msg tea.Msg) tea.Cmd {
+			updated, cmd := m.power.Update(msg)
+			m.power = updated.(powerUI.Model)
+			return cmd
+		},
+		isEditing: func(m *Model) bool { return m.power.IsEditing() },
+		resize:    func(m *Model, w, h int) { m.power.SetSize(w, h) },
+		activate:  func(m *Model) tea.Cmd { return m.power.Activate() },
+	},
 }
 
 // PageNames returns the valid page identifiers, in sidebar order, usable
@@ -125,3 +142,32 @@ func lookupPage(name string) (page, bool) {
 	}
 	return "", false
 }
+
+// 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.
+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)
+		}
+	}
+	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 pageRegistry {
+	for i, entry := range visiblePages() {
 		selected := entry.id == m.page
 		badgeStyle, textStyle := badgeNormal, textNormal
 		if selected {

internal/ui/app/update.go

@@ -47,7 +47,7 @@ func (m Model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 				m.resizeChildren()
 
 			default:
-				if p, ok := pageShortcuts[msg.String()]; ok {
+				if p, ok := m.pageShortcuts[msg.String()]; ok {
 					prev := m.page
 					m.page = p
 					if prev != p {

internal/ui/power/battery.go

@@ -0,0 +1,139 @@
+package power
+
+import (
+	"fmt"
+	"strings"
+
+	"charm.land/lipgloss/v2"
+	ilovetui "github.com/anotherhadi/ilovetui"
+	"github.com/anotherhadi/settuings/internal/power"
+)
+
+func (m *Model) handleBattery(msg batteryMsg) {
+	m.batteryLoading = false
+	m.batteryErr = msg.err
+	if msg.err != nil {
+		return
+	}
+	m.batteries = msg.batteries
+	m.ac = msg.ac
+}
+
+func (m Model) renderBattery(width int) string {
+	title := lipgloss.NewStyle().Bold(true).Render("Battery")
+
+	switch {
+	case m.batteryLoading:
+		return lipgloss.JoinVertical(lipgloss.Left, title, "", ilovetui.S.Faint.Render("Reading battery status…"))
+	case m.batteryErr != nil:
+		return lipgloss.JoinVertical(lipgloss.Left, title, "", errorStyle().Render(m.batteryErr.Error()))
+	}
+
+	lines := []string{title, ""}
+	if len(m.batteries) == 0 {
+		lines = append(lines, subtleStyle().Render("No battery detected — this looks like a desktop."))
+	}
+	for i, b := range m.batteries {
+		if i > 0 {
+			lines = append(lines, "")
+		}
+		lines = append(lines, renderBatteryInfo(b, width)...)
+	}
+
+	lines = append(lines, "", subtleStyle().Render("Power source:  ")+acLabel(m.ac))
+
+	return lipgloss.JoinVertical(lipgloss.Left, lines...)
+}
+
+func renderBatteryInfo(b power.Battery, width int) []string {
+	rows := []string{
+		subtleStyle().Render("Name:          ") + b.Name,
+		subtleStyle().Render("Status:        ") + statusLabel(b.Status),
+		subtleStyle().Render("Charge:        ") + renderBatteryBar(b.Capacity, width),
+	}
+	if remaining := timeRemainingLabel(b); remaining != "" {
+		rows = append(rows, subtleStyle().Render("Time left:     ")+remaining)
+	}
+	if b.Health >= 0 {
+		rows = append(rows, subtleStyle().Render("Health:        ")+fmt.Sprintf("%d%%", b.Health))
+	}
+	if b.CycleCount >= 0 {
+		rows = append(rows, subtleStyle().Render("Cycle count:   ")+fmt.Sprintf("%d", b.CycleCount))
+	}
+	if b.Technology != "" {
+		rows = append(rows, subtleStyle().Render("Technology:    ")+b.Technology)
+	}
+	if model := strings.TrimSpace(b.Manufacturer + " " + b.Model); model != "" {
+		rows = append(rows, subtleStyle().Render("Model:         ")+model)
+	}
+	return rows
+}
+
+func timeRemainingLabel(b power.Battery) string {
+	switch {
+	case b.TimeToEmpty != "":
+		return b.TimeToEmpty + " until empty"
+	case b.TimeToFull != "":
+		return b.TimeToFull + " until full"
+	}
+	return ""
+}
+
+func statusLabel(status string) string {
+	switch status {
+	case "Charging":
+		return successStyle().Render("⚡ Charging")
+	case "Full":
+		return successStyle().Render(status)
+	case "Discharging":
+		return status
+	default:
+		return mutedStyle().Render(status)
+	}
+}
+
+func acLabel(ac power.ACStatus) string {
+	switch {
+	case !ac.Present:
+		return mutedStyle().Render("unknown")
+	case ac.Online:
+		return successStyle().Render("connected")
+	default:
+		return mutedStyle().Render("disconnected")
+	}
+}
+
+// renderBatteryBar draws a static block-bar gauge for the charge level,
+// colored by how low it is, same spirit as the audio page's volume bar.
+func renderBatteryBar(pct, width int) string {
+	if pct < 0 {
+		return subtleStyle().Render("unknown")
+	}
+
+	barWidth := width / 3
+	switch {
+	case barWidth < 10:
+		barWidth = 10
+	case barWidth > 30:
+		barWidth = 30
+	}
+
+	filled := pct * barWidth / 100
+	switch {
+	case filled > barWidth:
+		filled = barWidth
+	case filled < 0:
+		filled = 0
+	}
+	bar := strings.Repeat("█", filled) + strings.Repeat("░", barWidth-filled)
+
+	color := ilovetui.S.Success
+	switch {
+	case pct <= 15:
+		color = ilovetui.S.Error
+	case pct <= 35:
+		color = ilovetui.S.Warning
+	}
+	gauge := lipgloss.NewStyle().Foreground(color).Render("[" + bar + "]")
+	return fmt.Sprintf("%s %3d%%", gauge, pct)
+}

internal/ui/power/commands.go

@@ -0,0 +1,40 @@
+package power
+
+import (
+	"time"
+
+	tea "charm.land/bubbletea/v2"
+	"github.com/anotherhadi/settuings/internal/power"
+)
+
+const tickInterval = 5 * time.Second
+
+func tickCmd() tea.Cmd {
+	return tea.Tick(tickInterval, func(time.Time) tea.Msg { return tickMsg{} })
+}
+
+func checkCmd() tea.Cmd {
+	return func() tea.Msg { return checkMsg{err: power.CheckAvailable()} }
+}
+
+func fetchProfilesCmd() tea.Cmd {
+	return func() tea.Msg {
+		profiles, err := power.ListProfiles()
+		return profilesMsg{profiles: profiles, err: err}
+	}
+}
+
+func setProfileCmd(name string) tea.Cmd {
+	return func() tea.Msg { return setProfileMsg{err: power.SetActive(name)} }
+}
+
+func fetchBatteryCmd() tea.Cmd {
+	return func() tea.Msg {
+		batteries, err := power.ReadBatteries()
+		if err != nil {
+			return batteryMsg{err: err}
+		}
+		ac, err := power.ReadAC()
+		return batteryMsg{batteries: batteries, ac: ac, err: err}
+	}
+}

internal/ui/power/keymap.go

@@ -0,0 +1,35 @@
+package power
+
+import (
+	"charm.land/bubbles/v2/key"
+	"github.com/anotherhadi/settuings/internal/keys"
+)
+
+// powerKeyMap renders the bottom help bar.
+type powerKeyMap struct {
+	m     Model
+	width int
+}
+
+func (k powerKeyMap) ShortHelp() []key.Binding {
+	g := keys.Keys.Global
+	p := keys.Keys.Power
+	if k.m.checkErr != nil {
+		return []key.Binding{p.Refresh, g.Help}
+	}
+	return []key.Binding{g.Up, g.Down, p.Select, p.Refresh, g.Help}
+}
+
+func (k powerKeyMap) FullHelp() [][]key.Binding {
+	g := keys.Keys.Global
+	p := keys.Keys.Power
+
+	var bindings []key.Binding
+	if k.m.checkErr != nil {
+		bindings = []key.Binding{p.Refresh}
+	} else {
+		bindings = []key.Binding{g.Up, g.Down, p.Select, p.Refresh}
+	}
+	bindings = append(bindings, g.CommonBindings()...)
+	return keys.ChunkByWidth(bindings, k.width)
+}

internal/ui/power/messages.go

@@ -0,0 +1,23 @@
+package power
+
+import "github.com/anotherhadi/settuings/internal/power"
+
+// checkMsg carries the result of power.CheckAvailable (powerprofilesctl).
+type checkMsg struct{ err error }
+
+// tickMsg triggers a periodic refresh of profiles + battery while this page
+// is active.
+type tickMsg struct{}
+
+type profilesMsg struct {
+	profiles []power.Profile
+	err      error
+}
+
+type setProfileMsg struct{ err error }
+
+type batteryMsg struct {
+	batteries []power.Battery
+	ac        power.ACStatus
+	err       error
+}

internal/ui/power/model.go

@@ -0,0 +1,61 @@
+// Package power provides the "Power" TUI page: power-profile selection (via
+// powerprofilesctl) and battery/AC status, in the same spirit as the
+// bluetooth page's controller power + device state.
+package power
+
+import (
+	"charm.land/bubbles/v2/help"
+	tea "charm.land/bubbletea/v2"
+	ilovetui "github.com/anotherhadi/ilovetui"
+	"github.com/anotherhadi/settuings/internal/power"
+)
+
+type Model struct {
+	width  int
+	height int
+	help   help.Model
+
+	checkErr error // reason powerprofilesctl is unusable; nil once confirmed OK
+	checked  bool
+
+	profilesLoading bool
+	profilesErr     error
+	profiles        []power.Profile
+	cursor          int
+	pending         bool
+	feedback        string
+
+	batteryLoading bool
+	batteryErr     error
+	batteries      []power.Battery
+	ac             power.ACStatus
+}
+
+func New() Model {
+	return Model{
+		help:            ilovetui.NewHelp(),
+		profilesLoading: true,
+		batteryLoading:  true,
+	}
+}
+
+func (m Model) Init() tea.Cmd {
+	return nil
+}
+
+// Activate is called every time the user navigates onto this page. It
+// re-checks powerprofilesctl availability, fetches profiles + battery
+// state, and starts the periodic auto-refresh loop.
+func (m *Model) Activate() tea.Cmd {
+	return tea.Batch(checkCmd(), fetchProfilesCmd(), fetchBatteryCmd(), tickCmd())
+}
+
+func (m Model) IsEditing() bool {
+	return false
+}
+
+func (m *Model) SetSize(w, h int) {
+	m.width = w
+	m.height = h
+	m.help.SetWidth(w - 2)
+}

internal/ui/power/profiles.go

@@ -0,0 +1,148 @@
+package power
+
+import (
+	"errors"
+	"fmt"
+	"strings"
+
+	"charm.land/bubbles/v2/key"
+	tea "charm.land/bubbletea/v2"
+	"charm.land/lipgloss/v2"
+	ilovetui "github.com/anotherhadi/ilovetui"
+	"github.com/anotherhadi/settuings/internal/icons"
+	"github.com/anotherhadi/settuings/internal/keys"
+	"github.com/anotherhadi/settuings/internal/power"
+)
+
+func (m *Model) handleProfiles(msg profilesMsg) {
+	m.profilesLoading = false
+	m.profilesErr = msg.err
+	if msg.err != nil {
+		return
+	}
+	m.profiles = msg.profiles
+	if m.cursor >= len(m.profiles) {
+		m.cursor = max(0, len(m.profiles)-1)
+	}
+}
+
+func (m *Model) handleSetProfile(msg setProfileMsg) tea.Cmd {
+	m.pending = false
+	if msg.err != nil {
+		m.feedback = msg.err.Error()
+		return nil
+	}
+	m.feedback = ""
+	return fetchProfilesCmd()
+}
+
+func (m Model) selectedProfile() *power.Profile {
+	if m.cursor < 0 || m.cursor >= len(m.profiles) {
+		return nil
+	}
+	return &m.profiles[m.cursor]
+}
+
+func (m *Model) updateProfiles(msg tea.Msg) tea.Cmd {
+	keyMsg, ok := msg.(tea.KeyPressMsg)
+	if !ok {
+		return nil
+	}
+	if m.checkErr != nil {
+		if key.Matches(keyMsg, keys.Keys.Power.Refresh) {
+			return checkCmd()
+		}
+		return nil
+	}
+
+	g := keys.Keys.Global
+	p := keys.Keys.Power
+
+	switch {
+	case key.Matches(keyMsg, g.Up):
+		if m.cursor > 0 {
+			m.cursor--
+		}
+	case key.Matches(keyMsg, g.Down):
+		if m.cursor < len(m.profiles)-1 {
+			m.cursor++
+		}
+	case key.Matches(keyMsg, p.Refresh):
+		return tea.Batch(fetchProfilesCmd(), fetchBatteryCmd())
+	case key.Matches(keyMsg, p.Select):
+		return m.applySelected()
+	}
+	return nil
+}
+
+func (m *Model) applySelected() tea.Cmd {
+	sel := m.selectedProfile()
+	if sel == nil || sel.Active {
+		return nil
+	}
+	m.pending = true
+	return setProfileCmd(sel.Name)
+}
+
+func (m Model) renderProfiles() string {
+	title := lipgloss.NewStyle().Bold(true).Render("Power Profile")
+
+	switch {
+	case !m.checked:
+		return lipgloss.JoinVertical(lipgloss.Left, title, "", ilovetui.S.Faint.Render("Checking powerprofilesctl…"))
+	case m.checkErr != nil:
+		return lipgloss.JoinVertical(lipgloss.Left, title, "", subtleStyle().Render(unavailableHint(m.checkErr)))
+	case m.profilesLoading:
+		return lipgloss.JoinVertical(lipgloss.Left, title, "", ilovetui.S.Faint.Render("Loading profiles…"))
+	case m.profilesErr != nil:
+		return lipgloss.JoinVertical(lipgloss.Left, title, "", errorStyle().Render(m.profilesErr.Error()))
+	}
+
+	lines := []string{title, ""}
+	for i, p := range m.profiles {
+		lines = append(lines, m.renderProfileRow(p, i == m.cursor))
+	}
+	switch {
+	case m.pending:
+		lines = append(lines, "", mutedStyle().Render("applying…"))
+	case m.feedback != "":
+		lines = append(lines, "", errorStyle().Render(m.feedback))
+	}
+	return lipgloss.JoinVertical(lipgloss.Left, lines...)
+}
+
+func (m Model) renderProfileRow(p power.Profile, selected bool) string {
+	textStyle := lipgloss.NewStyle().Foreground(ilovetui.S.Text)
+	if selected {
+		textStyle = textStyle.Bold(true).Foreground(ilovetui.S.Primary)
+	}
+	cursor := "  "
+	if selected {
+		cursor = "> "
+	}
+	check := " "
+	if p.Active {
+		check = successStyle().Render(icons.I.Check)
+	}
+	return fmt.Sprintf("%s%s%s", cursor, check, textStyle.Render(displayName(p.Name)))
+}
+
+// displayName turns a powerprofilesctl identifier ("power-saver") into a
+// readable label ("Power Saver").
+func displayName(name string) string {
+	words := strings.Split(strings.ReplaceAll(name, "-", " "), " ")
+	for i, w := range words {
+		if w == "" {
+			continue
+		}
+		words[i] = strings.ToUpper(w[:1]) + w[1:]
+	}
+	return strings.Join(words, " ")
+}
+
+func unavailableHint(err error) string {
+	if errors.Is(err, power.ErrNotFound) {
+		return "powerprofilesctl was not found in PATH.\nInstall power-profiles-daemon to select a profile."
+	}
+	return err.Error()
+}

internal/ui/power/style.go

@@ -0,0 +1,22 @@
+package power
+
+import (
+	"charm.land/lipgloss/v2"
+	ilovetui "github.com/anotherhadi/ilovetui"
+)
+
+func errorStyle() lipgloss.Style {
+	return lipgloss.NewStyle().Foreground(ilovetui.S.Error)
+}
+
+func successStyle() lipgloss.Style {
+	return lipgloss.NewStyle().Foreground(ilovetui.S.Success)
+}
+
+func subtleStyle() lipgloss.Style {
+	return lipgloss.NewStyle().Foreground(ilovetui.S.Subtle)
+}
+
+func mutedStyle() lipgloss.Style {
+	return lipgloss.NewStyle().Foreground(ilovetui.S.Muted)
+}

internal/ui/power/tabbar.go

@@ -0,0 +1,29 @@
+package power
+
+import (
+	"strings"
+
+	"charm.land/lipgloss/v2"
+	ilovetui "github.com/anotherhadi/ilovetui"
+	"github.com/anotherhadi/settuings/internal/icons"
+)
+
+// renderTabBar draws a header matching the bluetooth page's tab bar: a
+// single always-active label, since this page has no tabs of its own.
+func renderTabBar(width int) string {
+	style := lipgloss.NewStyle().Bold(true).Foreground(ilovetui.S.Primary).Padding(0, 2).
+		Border(lipgloss.NormalBorder(), false, false, true, false).
+		BorderForeground(ilovetui.S.Primary)
+
+	label := style.Render(icons.I.Power + "Power")
+
+	filler := width - lipgloss.Width(label)
+	if filler > 0 {
+		label = lipgloss.JoinHorizontal(lipgloss.Bottom, label,
+			lipgloss.NewStyle().
+				Border(lipgloss.NormalBorder(), false, false, true, false).
+				BorderForeground(ilovetui.S.Primary).
+				Render(strings.Repeat(" ", filler)))
+	}
+	return label
+}

internal/ui/power/update.go

@@ -0,0 +1,45 @@
+package power
+
+import (
+	"charm.land/bubbles/v2/key"
+	tea "charm.land/bubbletea/v2"
+	"github.com/anotherhadi/settuings/internal/keys"
+)
+
+func (m Model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
+	switch msg := msg.(type) {
+	case checkMsg:
+		wasUnavailable := m.checkErr != nil
+		m.checked = true
+		m.checkErr = msg.err
+		if msg.err == nil && wasUnavailable {
+			// recovered: resume fetching profiles
+			return m, fetchProfilesCmd()
+		}
+		return m, nil
+
+	case tickMsg:
+		cmds := []tea.Cmd{tickCmd(), fetchBatteryCmd()}
+		if m.checkErr == nil {
+			cmds = append(cmds, fetchProfilesCmd())
+		}
+		return m, tea.Batch(cmds...)
+
+	case profilesMsg:
+		m.handleProfiles(msg)
+		return m, nil
+	case setProfileMsg:
+		return m, m.handleSetProfile(msg)
+	case batteryMsg:
+		m.handleBattery(msg)
+		return m, nil
+
+	case tea.KeyPressMsg:
+		if key.Matches(msg, keys.Keys.Global.Help) {
+			m.help.ShowAll = !m.help.ShowAll
+			return m, nil
+		}
+		return m, m.updateProfiles(msg)
+	}
+	return m, nil
+}

internal/ui/power/view.go

@@ -0,0 +1,69 @@
+package power
+
+import (
+	"strings"
+
+	tea "charm.land/bubbletea/v2"
+	"charm.land/lipgloss/v2"
+	ilovetui "github.com/anotherhadi/ilovetui"
+)
+
+func windowStyle() lipgloss.Style {
+	return lipgloss.NewStyle().
+		Border(lipgloss.RoundedBorder()).
+		BorderForeground(ilovetui.S.Subtle).
+		Padding(1, 2)
+}
+
+func (m Model) View() tea.View {
+	statusBar := m.renderStatusBar()
+	innerW, innerH := m.contentBudget()
+	tabBar := renderTabBar(innerW)
+
+	box := lipgloss.NewStyle().Width(innerW).Height(innerH).Render(m.renderBody(innerW))
+	content := windowStyle().Render(lipgloss.JoinVertical(lipgloss.Left, tabBar, box))
+
+	return tea.NewView(lipgloss.JoinVertical(lipgloss.Left, content, statusBar))
+}
+
+func (m Model) renderStatusBar() string {
+	km := powerKeyMap{m: m, width: m.width}
+	return lipgloss.NewStyle().Padding(0, 1).Render(m.help.View(km))
+}
+
+// contentBudget returns the exact space available inside the bordered page
+// box, below the tab bar and above the status bar.
+func (m Model) contentBudget() (w, h int) {
+	frameW := windowStyle().GetHorizontalFrameSize()
+	frameH := windowStyle().GetVerticalFrameSize()
+	w = m.width - frameW
+
+	statusH := strings.Count(m.renderStatusBar(), "\n") + 1
+	tabBarH := lipgloss.Height(renderTabBar(w))
+
+	h = m.height - tabBarH - frameH - statusH
+	if h < 1 {
+		h = 1
+	}
+	return w, h
+}
+
+// renderBody lays out the two sections side by side once there's enough
+// width for both to breathe, and stacks them otherwise.
+func (m Model) renderBody(width int) string {
+	const splitThreshold = 60
+	const gap = 3
+
+	if width < splitThreshold {
+		return lipgloss.JoinVertical(lipgloss.Left, m.renderProfiles(), "", m.renderBattery(width))
+	}
+
+	leftW := width / 3
+	if leftW < 20 {
+		leftW = 20
+	}
+	rightW := width - leftW - gap
+	left := lipgloss.NewStyle().Width(leftW).Render(m.renderProfiles())
+	right := lipgloss.NewStyle().Width(rightW).Render(m.renderBattery(rightW))
+	return lipgloss.JoinHorizontal(lipgloss.Top, left, strings.Repeat(" ", gap), right)
+}

nix/package.nix

@@ -3,7 +3,7 @@
   buildGoApplication,
 }: let
   pname = "settuings";
-  version = "0.0.1";
+  version = "0.0.2";
   ldflags = ["-s" "-w" "-X main.version=${version}"];
   pkg = buildGoApplication {
     inherit pname version ldflags;