implemented mongo gridFS for file upload

pkg/mongo/connection.go

@@ -204,6 +204,25 @@ func (cm *ConnectionManager) Close(ctx context.Context) error {
 	return nil
 }
 
+// IsConnected checks if MongoDB connection is active
+func (cm *ConnectionManager) IsConnected() bool {
+	ctx, cancel := context.WithTimeout(context.Background(), 2*time.Second)
+	defer cancel()
+
+	err := cm.Ping(ctx)
+	return err == nil
+}
+
+// GetDatabase returns the MongoDB database instance
+func (cm *ConnectionManager) GetDatabase() *mongo.Database {
+	return cm.database
+}
+
+// GetClient returns the MongoDB client instance
+func (cm *ConnectionManager) GetClient() *mongo.Client {
+	return cm.client
+}
+
 // Ping pings the MongoDB server
 func (cm *ConnectionManager) Ping(ctx context.Context) error {
 	if err := cm.client.Ping(ctx, readpref.Primary()); err != nil {