from pydantic import BaseModel, Field
from typing import Optional

class VersionBase(BaseModel):
    version_number: str = Field(..., description="Version number")
    description: Optional[str] = Field(None, description="Version description")

class VersionCreate(VersionBase):
    class Config:
        schema_extra = {
            "example": {
                "version_number": "1.0.0",
                "description": "Initial release"
            }
        }

class Version(VersionBase):
    id: int
    
    class Config:
        orm_mode = True
        schema_extra = {
            "example": {
                "id": 1,
                "version_number": "1.0.0",
                "description": "Initial release"
            }
        }