from pydantic import BaseModel, Field, constr
from typing import Optional
from enum import Enum

class FoodCategory(str, Enum):
    APPETIZER = "appetizer"
    MAIN_COURSE = "main_course"
    DESSERT = "dessert"
    BEVERAGE = "beverage"

class FoodBase(BaseModel):
    name: constr(min_length=1, max_length=100) = Field(..., description="Name of the food item")
    description: Optional[str] = Field(None, description="Description of the food item")
    price: float = Field(..., gt=0, description="Price of the food item")
    category: FoodCategory = Field(..., description="Category of the food item")

class FoodCreate(FoodBase):
    pass

class FoodResponse(FoodBase):
    id: int = Field(..., description="Unique identifier for the food item")
    is_available: bool = Field(True, description="Availability status of the food item")

    class Config:
        schema_extra = {
            "example": {
                "id": 1,
                "name": "Margherita Pizza",
                "description": "Classic Italian pizza with tomato sauce, mozzarella, and fresh basil",
                "price": 12.99,
                "category": "main_course",
                "is_available": True
            }
        }