pls

lib/timer.go

@@ -0,0 +1,72 @@
+package lib
+
+import (
+	"sync"
+	"time"
+)
+
+var (
+	mu       sync.Mutex
+	instance *TimerManager
+)
+
+type TimerManager struct {
+	timers map[string]time.Time
+	mu     sync.Mutex
+}
+
+func NewTimerManager() *TimerManager {
+	return &TimerManager{
+		timers: make(map[string]time.Time),
+	}
+}
+
+func GetInstance() *TimerManager {
+	mu.Lock()
+	defer mu.Unlock()
+
+	if instance == nil {
+		instance = &TimerManager{
+			timers: make(map[string]time.Time),
+		}
+	}
+
+	return instance
+}
+
+func (m *TimerManager) StartTimer(userID string, key string, duration time.Duration) {
+	m.mu.Lock()
+	defer m.mu.Unlock()
+
+	m.timers[userID+":"+key] = time.Now().Add(duration)
+}
+
+func (m *TimerManager) TimerRunning(userID string, key string) (bool, time.Duration) {
+	m.mu.Lock()
+	defer m.mu.Unlock()
+
+	timerEnd, exists := m.timers[userID+":"+key]
+	if !exists {
+		return false, 0
+	}
+
+	if time.Now().After(timerEnd) {
+		delete(m.timers, userID+":"+key)
+		return false, 0
+	}
+
+	return true, time.Until(timerEnd)
+}
+
+func CancelTimer(userID string, key string) {
+	manager := GetInstance()
+
+	// Handle non-existent keys gracefully
+	if _, exists := manager.timers[userID+":"+key]; !exists {
+		return
+	}
+
+	manager.mu.Lock()
+	defer manager.mu.Unlock()
+	delete(manager.timers, userID+":"+key)
+}