post megre cleanup.

server/internal/webrtc/cursor/position.go

@@ -0,0 +1,74 @@
+package cursor
+
+import (
+	"reflect"
+	"sync"
+
+	"github.com/rs/zerolog"
+)
+
+type PositionListener interface {
+	SendCursorPosition(x, y int) error
+}
+
+type Position interface {
+	Shutdown()
+	Set(x, y int)
+	AddListener(listener PositionListener)
+	RemoveListener(listener PositionListener)
+}
+
+type position struct {
+	logger zerolog.Logger
+
+	listeners   map[uintptr]PositionListener
+	listenersMu sync.RWMutex
+}
+
+func NewPosition(logger zerolog.Logger) *position {
+	return &position{
+		logger:    logger.With().Str("submodule", "cursor-position").Logger(),
+		listeners: map[uintptr]PositionListener{},
+	}
+}
+
+func (manager *position) Shutdown() {
+	manager.logger.Info().Msg("shutdown")
+
+	manager.listenersMu.Lock()
+	for key := range manager.listeners {
+		delete(manager.listeners, key)
+	}
+	manager.listenersMu.Unlock()
+}
+
+func (manager *position) Set(x, y int) {
+	manager.listenersMu.RLock()
+	defer manager.listenersMu.RUnlock()
+
+	for _, l := range manager.listeners {
+		if err := l.SendCursorPosition(x, y); err != nil {
+			manager.logger.Err(err).Msg("failed to set cursor position")
+		}
+	}
+}
+
+func (manager *position) AddListener(listener PositionListener) {
+	manager.listenersMu.Lock()
+	defer manager.listenersMu.Unlock()
+
+	if listener != nil {
+		ptr := reflect.ValueOf(listener).Pointer()
+		manager.listeners[ptr] = listener
+	}
+}
+
+func (manager *position) RemoveListener(listener PositionListener) {
+	manager.listenersMu.Lock()
+	defer manager.listenersMu.Unlock()
+
+	if listener != nil {
+		ptr := reflect.ValueOf(listener).Pointer()
+		delete(manager.listeners, ptr)
+	}
+}