refactor: removed redundant loop mechanism in wholescreencapturer

internal/screencapturer/wholescreencapturer.go

@@ -47,34 +47,36 @@ type wholeScreenCapturer struct {
 
 	displayIndex  int
 	displayBounds image.Rectangle
-	interval      int
 	bufferCount   int
 	tempDirectory string
 	initialized   bool
-	running       bool
 
 	files  []string
-	latest string
-	done   chan struct{}
-	sync.WaitGroup
-	mu sync.RWMutex
+	mu     sync.RWMutex
 }
 
 // Get implements ScreenCapturer.
 func (w *wholeScreenCapturer) Get() (filepath string, err error) {
-	w.mu.RLock()
-	defer w.mu.Unlock()
-    if !w.initialized {
-        return "", ErrNotInitialized
-    }
-    if w.latest == "" {
-        return "", errors.New("no screenshot captured yet")
-    }
-    return w.latest, nil
+	if !w.initialized {
+		return "", ErrNotInitialized
+	}
+
+	fp, err := w.captureAndSave()
+	if err != nil {
+		w.log.Error("screenshot capture failed", "error", err)
+		return "", err
+	}
+
+	w.addToBuffer(fp)
+	return fp, nil
 }
 
 // Init implements ScreenCapturer.
 func (w *wholeScreenCapturer) Init() (err error) {
+	if w.initialized {
+		w.log.Debug("wholescreencapturer already initialized, skipping initialization")
+		return nil
+	}
 
 	displayCount := screenshot.NumActiveDisplays()
 	w.displayIndex = w.config.Screenshot.ScreenIndex % displayCount
@@ -87,9 +89,6 @@ func (w *wholeScreenCapturer) Init() (err error) {
 		"dy", w.displayBounds.Dy(),
 	)
 
-	w.interval = w.config.Screenshot.Interval
-	w.log.Debug("screenshot interval set", "interval", w.interval)
-
 	w.bufferCount = w.config.Screenshot.BufferCount
 	w.log.Debug("screenshot buffer count set", "count", w.bufferCount)
 
@@ -100,65 +99,10 @@ func (w *wholeScreenCapturer) Init() (err error) {
 	w.log.Debug("temporary directory created", "path", w.tempDirectory)
 
 	w.files = make([]string, 0, w.bufferCount)
-	w.latest = ""
 	w.initialized = true
 	return nil
 }
 
-// Start implements ScreenCapturer.
-func (w *wholeScreenCapturer) Start() error {
-	if !w.initialized {
-		return ErrNotInitialized
-	}
-	if w.running {
-		w.log.Debug("wholescreencapturer is already running, ignoring start")
-		return nil
-	}
-	w.running = true
-	w.Go(func() {
-		w.captureLoop()
-	})
-	w.log.Debug("wholescreencapturer started")
-	return nil
-}
-
-// Stop implements ScreenCapturer.
-func (w *wholeScreenCapturer) Stop() error {
-	if !w.initialized {
-		return ErrNotInitialized
-	}
-	if !w.running {
-		w.log.Debug("wholescreencapturer is not running, ignoring stop")
-		return nil
-	}
-	w.log.Debug("stopping wholescreencapturer")
-	close(w.done)
-	w.Wait()
-	w.running = false
-	w.log.Debug("wholescreencapturer stopped")
-	return nil
-}
-
-func (w *wholeScreenCapturer) captureLoop() {
-	ticker := time.NewTicker(time.Duration(w.interval) * time.Second)
-	defer ticker.Stop()
-
-	for {
-		select {
-		case <-w.done:
-			w.log.Debug("capture loop stopped")
-			return
-		case <-ticker.C:
-			fp, err := w.captureAndSave()
-			if err != nil {
-				w.log.Error("screenshot capture failed", "error", err)
-				continue
-			}
-			w.addToBuffer(fp)
-		}
-	}
-}
-
 func (w *wholeScreenCapturer) captureAndSave() (string, error) {
 	img, err := screenshot.CaptureRect(w.displayBounds)
 	if err != nil {
@@ -191,7 +135,6 @@ func (w *wholeScreenCapturer) addToBuffer(fp string) {
 	w.mu.Lock()
 	defer w.mu.Unlock()
 	w.files = append(w.files, fp)
-	w.latest = fp
 
 	if len(w.files) > w.bufferCount {
 		old := w.files[0]
@@ -214,7 +157,6 @@ func NewWholeScreenCapturer(
 	capturer := &wholeScreenCapturer{
 		config: config,
 		log:    log,
-		done:   make(chan struct{}),
 	}
 	lc.Append(fx.StopHook(func(ctx context.Context) error {
 		if !capturer.initialized {
@@ -222,15 +164,18 @@ func NewWholeScreenCapturer(
 			return nil
 		}
 
-		log.Debug("stopping wholescreencapturer")
+		log.Debug("cleaning up wholescreencapturer")
 
-		err := capturer.Stop()
-		if err != nil {
-			log.Error("failed to stop wholescreencapturer gracefully")
-			return err
+		// Clean up all screenshot files
+		capturer.mu.Lock()
+		defer capturer.mu.Unlock()
+		for _, file := range capturer.files {
+			if err := os.Remove(file); err != nil {
+				log.Warn("failed to remove screenshot file during cleanup", "path", file, "error", err)
+			}
 		}
 
-		err = os.RemoveAll(capturer.tempDirectory)
+		err := os.RemoveAll(capturer.tempDirectory)
 		if err != nil {
 			log.Error("failed to remove temp directory")
 			return err