from typing import List, Optional

from pydantic import BaseModel, Field, HttpUrl


class ProductBase(BaseModel):
    """Base schema for product data."""

    name: str
    description: Optional[str] = None
    price: float = Field(gt=0)
    stock: int = Field(ge=0, default=0)
    image_url: Optional[HttpUrl] = None
    anime_title: Optional[str] = None
    character_name: Optional[str] = None


class ProductCreate(ProductBase):
    """Schema for creating a new product."""

    category_ids: List[int] = []


class ProductUpdate(BaseModel):
    """Schema for updating a product."""

    name: Optional[str] = None
    description: Optional[str] = None
    price: Optional[float] = Field(gt=0, default=None)
    stock: Optional[int] = Field(ge=0, default=None)
    image_url: Optional[HttpUrl] = None
    anime_title: Optional[str] = None
    character_name: Optional[str] = None
    category_ids: Optional[List[int]] = None


class CategoryInProduct(BaseModel):
    """Schema for category data in product responses."""

    id: int
    name: str

    class Config:
        from_attributes = True


class ProductResponse(ProductBase):
    """Schema for product responses."""

    id: int
    categories: List[CategoryInProduct] = []

    class Config:
        from_attributes = True