from pydantic import BaseModel, Field

class BreedBase(BaseModel):
    name: str = Field(..., min_length=1, unique=True, index=True, description="Breed name")
    description: str | None = Field(None, description="Breed description")
    origin: str | None = Field(None, description="Breed origin")
    breed_group: str | None = Field(None, description="Breed group")

    class Config:
        schema_extra = {
            "example": {
                "name": "Labrador Retriever",
                "description": "Friendly, outgoing, and high-spirited companions",
                "origin": "Canada",
                "breed_group": "Sporting"
            }
        }

class BreedCreate(BreedBase):
    pass

class BreedResponse(BreedBase):
    id: int