feat: disable status leds while app runs (#633)

Author: lucarin91

internal/orchestrator/helpers.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"errors"
 	"fmt"
+	"os"
 	"slices"
 	"strings"
 
@@ -186,3 +187,29 @@ func GetCustomErrorFomDockerEvent(message string) error {
 
 	return nil
 }
+
+type LedTrigger string
+
+const (
+	LedTriggerNone    LedTrigger = "none"
+	LedTriggerDefault LedTrigger = "default"
+)
+
+var statusLeds = paths.NewPathList(
+	"/sys/class/leds/blue:bt/trigger",
+	"/sys/class/leds/green:wlan/trigger",
+	"/sys/class/leds/red:panic/trigger",
+)
+
+func setStatusLeds(trigger LedTrigger) error {
+	for _, ledPath := range statusLeds {
+		if !ledPath.Exist() {
+			return fmt.Errorf("LED path %s does not exist", ledPath)
+		}
+		var value string
+		if err := os.WriteFile(ledPath.String(), []byte(trigger), 0600); err != nil {
+			return fmt.Errorf("failed to set LED %s to %s: %w", ledPath, value, err)
+		}
+	}
+	return nil
+}

internal/orchestrator/orchestrator.go

@@ -115,6 +115,10 @@ func StartApp(
 			return
 		}
 
+		if err := setStatusLeds(LedTriggerNone); err != nil {
+			slog.Debug("unable to set status leds", slog.String("error", err.Error()))
+		}
+
 		sketchCallbackWriter := NewCallbackWriter(func(line string) {
 			if !yield(StreamMessage{data: line}) {
 				cancel()
@@ -302,6 +306,10 @@ func stopAppWithCmd(ctx context.Context, app app.ArduinoApp, cmd string) iter.Se
 		ctx, cancel := context.WithCancel(ctx)
 		defer cancel()
 
+		if err := setStatusLeds(LedTriggerDefault); err != nil {
+			slog.Debug("unable to set status leds", slog.String("error", err.Error()))
+		}
+
 		callbackWriter := NewCallbackWriter(func(line string) {
 			if !yield(StreamMessage{data: line}) {
 				cancel()