from pydantic import BaseModel
from datetime import datetime
from typing import Optional

class OperationLogBase(BaseModel):
    user_id: int
    username: str
    company_code: Optional[str] = None
    module: str
    operation_type: str
    operation_detail: Optional[str] = None
    before_data: Optional[str] = None
    after_data: Optional[str] = None

class OperationLogCreate(OperationLogBase):
    pass

class OperationLogResponse(OperationLogBase):
    id: int
    created_at: datetime
    
    class Config:
        from_attributes = True