a working product with ugly ui

app/models/session.py

@@ -0,0 +1,22 @@
+from sqlalchemy import Column, String, DateTime, ForeignKey
+from sqlalchemy.dialects.postgresql import UUID
+from sqlalchemy.sql import func
+import uuid
+from app.database import Base
+
+
+class Session(Base):
+    """Session model for tracking WebSocket connections and user presence."""
+
+    __tablename__ = "sessions"
+
+    id = Column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
+    user_id = Column(UUID(as_uuid=True), ForeignKey("users.id", ondelete="CASCADE"), nullable=True, index=True)
+    map_id = Column(UUID(as_uuid=True), ForeignKey("maps.id", ondelete="CASCADE"), nullable=False, index=True)
+    socket_id = Column(String(255), nullable=False)
+
+    # Denormalized username for quick access
+    username = Column(String(50), nullable=True)
+
+    connected_at = Column(DateTime(timezone=True), server_default=func.now(), nullable=False)
+    last_seen = Column(DateTime(timezone=True), server_default=func.now(), onupdate=func.now(), nullable=False)