Fix: Room creation failing due to hardcoded database name and missing type assertion

backend/routes/rooms.go

@@ -61,10 +61,16 @@ func CreateRoomHandler(c *gin.Context) {
 	}
 
 	// Query user document using email
-	userCollection := db.MongoClient.Database("DebateAI").Collection("users")
+	userCollection := db.MongoDatabase.Collection("users")
 	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
 	defer cancel()
 
+	emailStr, ok := email.(string)
+	if !ok {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Invalid email format"})
+		return
+	}
+
 	var user struct {
 		ID          primitive.ObjectID `bson:"_id"`
 		Email       string             `bson:"email"`
@@ -73,7 +79,7 @@ func CreateRoomHandler(c *gin.Context) {
 		AvatarURL   string             `bson:"avatarUrl"`
 	}
 
-	err := userCollection.FindOne(ctx, bson.M{"email": email}).Decode(&user)
+	err := userCollection.FindOne(ctx, bson.M{"email": emailStr}).Decode(&user)
 	if err != nil {
 		c.JSON(http.StatusNotFound, gin.H{"error": "User not found"})
 		return
@@ -96,7 +102,7 @@ func CreateRoomHandler(c *gin.Context) {
 		Participants: []Participant{creatorParticipant},
 	}
 
-	roomCollection := db.MongoClient.Database("DebateAI").Collection("rooms")
+	roomCollection := db.MongoDatabase.Collection("rooms")
 	_, err = roomCollection.InsertOne(ctx, newRoom)
 	if err != nil {
 		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to create room"})
@@ -109,7 +115,7 @@ func CreateRoomHandler(c *gin.Context) {
 // GetRoomsHandler handles GET /rooms and returns all rooms.
 func GetRoomsHandler(c *gin.Context) {
 
-	collection := db.MongoClient.Database("DebateAI").Collection("rooms")
+	collection := db.MongoDatabase.Collection("rooms")
 	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
 	defer cancel()
 
@@ -140,7 +146,7 @@ func JoinRoomHandler(c *gin.Context) {
 	}
 
 	// Query user document using email
-	userCollection := db.MongoClient.Database("DebateAI").Collection("users")
+	userCollection := db.MongoDatabase.Collection("users")
 	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
 	defer cancel()
 
@@ -174,7 +180,7 @@ func JoinRoomHandler(c *gin.Context) {
 	}
 
 	// Use atomic operation to join room
-	roomCollection := db.MongoClient.Database("DebateAI").Collection("rooms")
+	roomCollection := db.MongoDatabase.Collection("rooms")
 	filter := bson.M{"_id": roomId}
 	update := bson.M{
 		"$addToSet": bson.M{"participants": participant},
@@ -206,8 +212,8 @@ func GetRoomParticipantsHandler(c *gin.Context) {
 	}
 
 	// Query room document
-	roomCollection := db.MongoClient.Database("DebateAI").Collection("rooms")
-	userCollection := db.MongoClient.Database("DebateAI").Collection("users")
+	roomCollection := db.MongoDatabase.Collection("rooms")
+	userCollection := db.MongoDatabase.Collection("users")
 	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
 	defer cancel()
 

backend/services/transcriptservice.go

@@ -369,20 +369,15 @@ func extractTopicFromTranscripts(transcripts map[string]string) string {
 }
 
 func lookupRoomTopic(ctx context.Context, roomID string) string {
-	if db.MongoClient == nil {
+	if db.MongoClient == nil || db.MongoDatabase == nil {
 		return ""
 	}
 
-	var database = db.MongoDatabase
-	if database == nil {
-		database = db.MongoClient.Database("DebateAI")
-	}
-
 	var room struct {
 		Topic        string `bson:"topic"`
 		CurrentTopic string `bson:"currentTopic"`
 	}
-	if err := database.Collection("rooms").FindOne(ctx, bson.M{"_id": roomID}).Decode(&room); err == nil {
+	if err := db.MongoDatabase.Collection("rooms").FindOne(ctx, bson.M{"_id": roomID}).Decode(&room); err == nil {
 		if topic := strings.TrimSpace(room.Topic); topic != "" {
 			return topic
 		}