from pydantic import BaseModel, Field
from typing import Optional

class BookBase(BaseModel):
    title: str = Field(..., min_length=1, max_length=200, description="Book title")
    author: str = Field(..., min_length=1, max_length=100, description="Book author")
    description: Optional[str] = Field(None, description="Book description")
    isbn: str = Field(..., min_length=10, max_length=13, description="Book ISBN")
    publication_year: Optional[int] = Field(None, gt=1000, lt=2100, description="Year of publication")
    publisher: Optional[str] = Field(None, max_length=100, description="Book publisher")
    page_count: Optional[int] = Field(None, gt=0, description="Number of pages")
    language: Optional[str] = Field(None, max_length=50, description="Book language")

class BookCreate(BookBase):
    class Config:
        schema_extra = {
            "example": {
                "title": "The Great Gatsby",
                "author": "F. Scott Fitzgerald",
                "description": "A story of decadence and excess",
                "isbn": "9780743273565",
                "publication_year": 1925,
                "publisher": "Charles Scribner's Sons",
                "page_count": 180,
                "language": "English"
            }
        }

class Book(BookBase):
    id: int = Field(..., description="Book ID")

    class Config:
        orm_mode = True