from datetime import datetime
from typing import Optional
from sqlalchemy import Column, DateTime, Text
from sqlmodel import SQLModel, Field


class PresentationLayoutCodeModel(SQLModel, table=True):
    """Model for storing presentation layout codes"""
    
    __tablename__ = "presentation_layout_codes"
    
    id: Optional[int] = Field(default=None, primary_key=True)
    presentation_id: str = Field(index=True, description="UUID of the presentation")
    layout_id: str = Field(description="Unique identifier for the layout")
    layout_name: str = Field(description="Display name of the layout")
    layout_code: str = Field(sa_column=Column(Text), description="TSX/React component code for the layout")
    created_at: datetime = Field(sa_column=Column(DateTime, default=datetime.now))
    updated_at: datetime = Field(sa_column=Column(DateTime, default=datetime.now, onupdate=datetime.now))