from pydantic import BaseModel, Field
from typing import Optional
from datetime import datetime
from uuid import UUID

class BookBase(BaseModel):
    title: str = Field(..., description="Title of the book")
    author: str = Field(..., description="Author of the book")
    description: Optional[str] = Field(None, description="Description of the book")
    publisher: Optional[str] = Field(None, description="Publisher of the book")
    publication_year: Optional[int] = Field(None, description="Year of publication")
    isbn: str = Field(..., description="ISBN of the book")
    pages: Optional[int] = Field(None, description="Number of pages")
    language: Optional[str] = Field(None, description="Language of the book")

class BookCreate(BookBase):
    pass

class BookSchema(BookBase):
    id: UUID
    created_at: datetime
    updated_at: datetime

    class Config:
        orm_mode = True