avoid initializing with 0 brightness, update Makefile

Makefile

@@ -1,13 +1,28 @@
-BINARY_NAME=keyboard-backlight-daemon
-OUTPUT_DIR=bin/
+.PHONY: help test build run deploy clean
 
-build:
-	go build -o ${OUTPUT_DIR}${BINARY_NAME} main.go
+BINARY_NAME = keyboard-backlight-daemon
+OUTPUT_DIR  = bin/
+GO_FLAGS   ?=
+NAME       := keyboard-backlight-daemon
+PACKAGE    := github.com/markusressel/$(NAME)
+GIT_REV    ?= $(shell git rev-parse --short HEAD)
+SOURCE_DATE_EPOCH ?= $(shell date +%s)
+DATE       ?= $(shell date -u -d @${SOURCE_DATE_EPOCH} +"%Y-%m-%dT%H:%M:%SZ")
+VERSION    ?= 1.1.0
+
+test:   ## Run all tests
+	@go clean --testcache && go test -v ./...
 
-run:
+build: clean
 	go build -o ${OUTPUT_DIR}${BINARY_NAME} main.go
+
+run: build
 	./${OUTPUT_DIR}${BINARY_NAME}
 
+deploy: build
+	mkdir -p ~/.custom/bin/
+	cp ./${OUTPUT_DIR}${BINARY_NAME} ~/.custom/bin/${BINARY_NAME}
+
 clean:
 	go clean
-	rm ${OUTPUT_DIR}${BINARY_NAME}
+	rm -rf ${OUTPUT_DIR}${BINARY_NAME}

internal/service/service.go

@@ -49,8 +49,8 @@ func NewKbdService(c config.Configuration, l light.Light) *KbdService {
 func (s *KbdService) Run() {
 
 	b, err := s.light.GetBrightness()
-	if err != nil {
-		panic(err)
+	if err != nil || b <= 0 {
+		b = 255
 	}
 	s.targetBrightness = b
 
@@ -128,16 +128,14 @@ func (s KbdService) onUserInteraction() {
 
 func (s *KbdService) updateState(userIdle bool) {
 	if s.initialized == false {
-		s.initialized = true
+		defer func() { s.initialized = true }()
 	} else if s.userIdle == userIdle {
 		return
 	}
 
 	s.userIdle = userIdle
-	// TODO: verbose
-	//fmt.Printf("UserIdle: %t\n", userIdle)
 
-	if userIdle {
+	if userIdle && s.initialized {
 		// update the target brightness to the
 		// last brightness before detecting "idle" state
 		b, err := s.light.GetBrightness()
@@ -152,7 +150,8 @@ func (s *KbdService) updateState(userIdle bool) {
 }
 
 // listenToEvents listens to incoming events on the given file
-//    and notifies the given channel ch for each one.
+//
+//	and notifies the given channel ch for each one.
 func (s KbdService) listenToEvents(path string, ch chan Event) error {
 	f, err := os.Open(path)
 	if err != nil {