Fixed entire calendar layout + chat layout + chat history

backend/modules/nlp/models.py

@@ -0,0 +1,23 @@
+\
+# /home/cdp/code/MAIA/backend/modules/nlp/models.py
+from sqlalchemy import Column, Integer, String, Text, DateTime, ForeignKey, Enum as SQLEnum
+from sqlalchemy.orm import relationship
+from sqlalchemy.sql import func
+import enum
+
+from core.database import Base
+
+class MessageSender(enum.Enum):
+    USER = "user"
+    AI = "ai"
+
+class ChatMessage(Base):
+    __tablename__ = "chat_messages"
+
+    id = Column(Integer, primary_key=True, index=True)
+    user_id = Column(Integer, ForeignKey("users.id"), nullable=False, index=True)
+    sender = Column(SQLEnum(MessageSender), nullable=False)
+    text = Column(Text, nullable=False)
+    timestamp = Column(DateTime(timezone=True), server_default=func.now())
+
+    owner = relationship("User") # Relationship to the User model