Add streamdeck-ctl JSON control CLI

streamdeck-ctl reports device/daemon/key status as JSON and edits the
config (brightness, key set/clear/press, daemon control) so front-ends
don't have to reimplement YAML handling or device probing.

- internal/config/edit.go: comment-preserving, node-level YAML edits with
  atomic writes; key indices written as !!int so config.Load accepts them.
- internal/device: add model names, Lookup() and Present() for probing
  without opening the HID handle.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01BjuZBBfzXqZgxRhxzJvkkC
This commit is contained in:
Levi Woodard
2026-09-27 18:21:33 -06:00
parent cef6f72712
commit 8cff4f8418
6 changed files with 1399 additions and 3 deletions

View File

@@ -0,0 +1,397 @@
package main
import (
"fmt"
"os"
"os/exec"
"path/filepath"
"runtime"
"sort"
"strings"
"time"
"git.i0t.app/lwoodard/streamdeck-go/internal/config"
"git.i0t.app/lwoodard/streamdeck-go/internal/device"
"git.i0t.app/lwoodard/streamdeck-go/internal/modules"
)
const daemonUnit = "streamdeck-go.service"
// Status is the full snapshot consumed by front-ends. Everything a panel needs
// to render in one call — polling several small commands from QML would be both
// slower and racier.
type Status struct {
OK bool `json:"ok"`
ConfigPath string `json:"configPath"`
ModulesPath string `json:"modulesPath"`
IconsDir string `json:"iconsDir"`
Brightness int `json:"brightness"`
ConfigError string `json:"configError,omitempty"`
Daemon DaemonStatus `json:"daemon"`
Device DeviceStatus `json:"device"`
Keys []KeyStatus `json:"keys"`
Icons []string `json:"icons"`
Modules []ModuleStatus `json:"modules"`
Warnings []string `json:"warnings,omitempty"`
}
type DaemonStatus struct {
Unit string `json:"unit"`
Active bool `json:"active"`
Enabled bool `json:"enabled"`
State string `json:"state"` // systemd ActiveState, e.g. "active", "failed"
Sub string `json:"sub"` // systemd SubState, e.g. "running"
SinceSec int64 `json:"sinceSec"` // seconds since it entered the active state, 0 if unknown
}
type DeviceStatus struct {
Connected bool `json:"connected"`
Known bool `json:"known"` // product ID is in the supported-models table
Model string `json:"model"`
VendorID string `json:"vendorId"`
ProductID string `json:"productId"`
KeyCount int `json:"keyCount"`
Cols int `json:"cols"`
Rows int `json:"rows"`
ImageWidth int `json:"imageWidth"`
ImageHeight int `json:"imageHeight"`
Error string `json:"error,omitempty"`
}
// KeyStatus describes one configured key. Only populated slots appear; the grid
// shape comes from Device.Cols/Rows so a front-end can lay out empty slots.
type KeyStatus struct {
Index int `json:"index"`
Kind string `json:"kind"` // empty|static|text|toggle|module
Label string `json:"label"` // short human label for a grid cell
Icon string `json:"icon,omitempty"`
IconPath string `json:"iconPath,omitempty"` // absolute, for previews
IconTrue string `json:"iconTrue,omitempty"`
IconFalse string `json:"iconFalse,omitempty"`
Text string `json:"text,omitempty"`
TextColor string `json:"textColor,omitempty"`
TextCommand string `json:"textCommand,omitempty"`
Refresh string `json:"refresh,omitempty"`
Command string `json:"command,omitempty"`
Module string `json:"module,omitempty"`
Function string `json:"function,omitempty"`
Params map[string]string `json:"params,omitempty"`
Privileged bool `json:"privileged"`
Poll *PollStatus `json:"poll,omitempty"`
}
type PollStatus struct {
Command string `json:"command,omitempty"`
Match string `json:"match,omitempty"`
Interval string `json:"interval,omitempty"`
Module string `json:"module,omitempty"`
Function string `json:"function,omitempty"`
}
type ModuleStatus struct {
Name string `json:"name"`
Functions []FunctionStatus `json:"functions"`
}
type FunctionStatus struct {
Name string `json:"name"`
Params map[string]string `json:"params,omitempty"`
}
func cmdStatus(cfgPath string) error {
status := Status{
OK: true,
ConfigPath: cfgPath,
ModulesPath: config.ModulesPath(cfgPath),
Keys: []KeyStatus{},
Icons: []string{},
Modules: []ModuleStatus{},
}
cfg, err := config.Load(cfgPath)
if err != nil {
// A missing or malformed config is worth reporting in the panel rather
// than failing the whole call — daemon and device state are still useful.
status.ConfigError = err.Error()
status.Daemon = daemonState()
status.Device = deviceState(device.VendorID, 0x00ba)
emit(status)
return nil
}
status.IconsDir = cfg.IconsDir
status.Brightness = cfg.Brightness
status.Daemon = daemonState()
status.Device = deviceState(cfg.Device.VendorID, cfg.Device.ProductID)
reg, err := modules.LoadRegistry(status.ModulesPath)
if err != nil {
status.Warnings = append(status.Warnings, fmt.Sprintf("modules.yaml: %v", err))
reg = &modules.Registry{}
}
status.Modules = moduleList(reg)
status.Keys = keyList(cfg, reg)
status.Icons = iconList(cfg.IconsDir)
emit(status)
return nil
}
func keyList(cfg *config.Config, reg *modules.Registry) []KeyStatus {
indices := make([]int, 0, len(cfg.Keys))
for index := range cfg.Keys {
indices = append(indices, index)
}
sort.Ints(indices)
out := make([]KeyStatus, 0, len(indices))
for _, index := range indices {
key := cfg.Keys[index]
entry := KeyStatus{
Index: index,
Icon: key.Icon,
IconTrue: key.IconTrue,
IconFalse: key.IconFalse,
Text: key.Text,
TextColor: key.TextColor,
TextCommand: key.TextCommand,
Refresh: key.Refresh,
Command: key.Command,
Module: key.Module,
Function: key.Function,
Params: key.Params,
}
if icon := firstNonEmpty(key.Icon, key.IconTrue, key.IconFalse); icon != "" {
entry.IconPath = resolveIcon(cfg.IconsDir, icon)
}
// The rendered template can inline secrets ({{env "TOKEN"}}), so it never
// leaves this process — it is only inspected for the priv: prefix.
entry.Privileged = strings.HasPrefix(entry.Command, "priv:")
if !entry.Privileged && key.Module != "" && key.Function != "" {
if resolved, err := reg.Resolve(key.Module, key.Function, key.Params); err == nil {
entry.Privileged = strings.HasPrefix(resolved, "priv:")
}
}
if key.Poll != nil {
entry.Poll = &PollStatus{
Command: key.Poll.Command,
Match: key.Poll.Match,
Interval: key.Poll.Interval,
Module: key.Poll.Module,
Function: key.Poll.Function,
}
}
entry.Kind = keyKind(key)
entry.Label = keyLabel(key)
out = append(out, entry)
}
return out
}
func keyKind(key config.KeyConfig) string {
switch {
case key.Poll != nil:
return "toggle"
case key.Module != "":
return "module"
case key.Icon == "" && (key.Text != "" || key.TextCommand != ""):
return "text"
case key.Icon != "":
return "static"
default:
return "empty"
}
}
// keyLabel produces a short label for a grid cell: whatever identifies the key
// most directly to the person who wrote it.
func keyLabel(key config.KeyConfig) string {
if key.Text != "" {
if line, _, _ := strings.Cut(key.Text, "\n"); strings.TrimSpace(line) != "" {
return strings.TrimSpace(line)
}
}
if key.Function != "" {
return strings.ReplaceAll(key.Function, "_", " ")
}
if icon := firstNonEmpty(key.Icon, key.IconTrue, key.IconFalse); icon != "" {
base := filepath.Base(icon)
return strings.TrimSuffix(base, filepath.Ext(base))
}
if key.Command != "" {
command := strings.TrimPrefix(key.Command, "priv:")
if field := strings.Fields(command); len(field) > 0 {
return filepath.Base(field[0])
}
}
if key.TextCommand != "" {
return "live text"
}
return "key"
}
func moduleList(reg *modules.Registry) []ModuleStatus {
if reg == nil || reg.Modules == nil {
return []ModuleStatus{}
}
names := make([]string, 0, len(reg.Modules))
for name := range reg.Modules {
names = append(names, name)
}
sort.Strings(names)
out := make([]ModuleStatus, 0, len(names))
for _, name := range names {
def := reg.Modules[name]
fnNames := make([]string, 0, len(def))
for fnName := range def {
fnNames = append(fnNames, fnName)
}
sort.Strings(fnNames)
functions := make([]FunctionStatus, 0, len(fnNames))
for _, fnName := range fnNames {
functions = append(functions, FunctionStatus{Name: fnName, Params: def[fnName].Params})
}
out = append(out, ModuleStatus{Name: name, Functions: functions})
}
return out
}
var iconExtensions = map[string]bool{
".png": true, ".jpg": true, ".jpeg": true, ".svg": true, ".gif": true,
}
func iconList(dir string) []string {
entries, err := os.ReadDir(dir)
if err != nil {
return []string{}
}
out := make([]string, 0, len(entries))
for _, entry := range entries {
if entry.IsDir() {
continue
}
if iconExtensions[strings.ToLower(filepath.Ext(entry.Name()))] {
out = append(out, entry.Name())
}
}
sort.Strings(out)
return out
}
// resolveIcon mirrors the daemon's lookup: names are relative to icons_dir
// unless they are already absolute.
func resolveIcon(iconsDir, name string) string {
if filepath.IsAbs(name) {
return name
}
return filepath.Join(iconsDir, name)
}
func deviceState(vendorID, productID uint16) DeviceStatus {
status := DeviceStatus{
VendorID: fmt.Sprintf("0x%04x", vendorID),
ProductID: fmt.Sprintf("0x%04x", productID),
}
if model, ok := device.Lookup(productID); ok {
status.Known = true
status.Model = model.Name
status.KeyCount = model.KeyCount
status.Cols = model.Cols
status.Rows = model.Rows
status.ImageWidth = model.ImageWidth
status.ImageHeight = model.ImageHeight
} else {
status.Model = "Unknown model"
}
present, err := device.Present(vendorID, productID)
if err != nil {
status.Error = err.Error()
return status
}
status.Connected = present
return status
}
func daemonState() DaemonStatus {
status := DaemonStatus{Unit: daemonUnit}
if runtime.GOOS == "darwin" {
// launchd has no equivalent of ActiveState; `launchctl list` printing the
// label at all means it is loaded, and a PID in column one means running.
label := "com.woodarddigital.streamdeck-go"
out, err := exec.Command("launchctl", "list").Output()
if err != nil {
status.State = "unknown"
return status
}
for _, line := range strings.Split(string(out), "\n") {
if !strings.HasSuffix(strings.TrimSpace(line), label) {
continue
}
status.Enabled = true
fields := strings.Fields(line)
if len(fields) > 0 && fields[0] != "-" {
status.Active = true
status.State = "active"
status.Sub = "running"
} else {
status.State = "inactive"
}
return status
}
status.State = "inactive"
return status
}
out, err := exec.Command("systemctl", "--user", "show", daemonUnit,
"-p", "ActiveState", "-p", "SubState", "-p", "UnitFileState",
"-p", "ActiveEnterTimestamp").Output()
if err != nil {
status.State = "unknown"
return status
}
fields := map[string]string{}
for _, line := range strings.Split(string(out), "\n") {
name, value, found := strings.Cut(strings.TrimSpace(line), "=")
if found {
fields[name] = value
}
}
status.State = fields["ActiveState"]
status.Sub = fields["SubState"]
status.Active = status.State == "active"
status.Enabled = strings.HasPrefix(fields["UnitFileState"], "enabled")
// Realtime rather than the *Monotonic pair: systemd's monotonic clock
// excludes suspend while /proc/uptime includes it, so mixing them overstated
// uptime by the suspended duration after every sleep. The timestamp is
// rendered in the local zone ("Sat 2026-08-16 10:26:11 MDT"), where the
// abbreviation parses unambiguously.
if ts := fields["ActiveEnterTimestamp"]; ts != "" && ts != "n/a" {
if entered, err := time.ParseInLocation("Mon 2006-01-02 15:04:05 MST", ts, time.Local); err == nil {
if since := time.Since(entered); since > 0 {
status.SinceSec = int64(since.Seconds())
}
}
}
return status
}
func firstNonEmpty(values ...string) string {
for _, value := range values {
if value != "" {
return value
}
}
return ""
}