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

class BookBase(BaseModel):
    title: str = Field(..., min_length=1, max_length=200, description="Book title")
    description: Optional[str] = Field(None, description="Book description")
    isbn: str = Field(..., description="Book ISBN number")
    author_id: str = Field(..., description="ID of the book's author")
    publication_year: int = Field(..., ge=1000, le=2100, description="Year of publication")
    pages: int = Field(..., gt=0, description="Number of pages")
    genre: str = Field(..., description="Book genre")
    publisher: str = Field(..., description="Book publisher")

class BookCreate(BookBase):
    class Config:
        schema_extra = {
            "example": {
                "title": "The Great Gatsby",
                "description": "A novel by F. Scott Fitzgerald",
                "isbn": "978-0743273565",
                "author_id": "author_uuid",
                "publication_year": 1925,
                "pages": 180,
                "genre": "Fiction",
                "publisher": "Scribner"
            }
        }

class Book(BookBase):
    id: UUID
    
    class Config:
        orm_mode = True
        schema_extra = {
            "example": {
                "id": "550e8400-e29b-41d4-a716-446655440000",
                "title": "The Great Gatsby",
                "description": "A novel by F. Scott Fitzgerald",
                "isbn": "978-0743273565",
                "author_id": "author_uuid",
                "publication_year": 1925,
                "pages": 180,
                "genre": "Fiction",
                "publisher": "Scribner"
            }
        }