import uuid
from typing import Optional, List
from decimal import Decimal
from pydantic import BaseModel, Field

from barker.schemas import to_camel
from barker.schemas.sale_category import SaleCategoryLink


class ProductLink(BaseModel):
    id_: uuid.UUID = Field(...)
    name: Optional[str]
    enabled: Optional[bool]

    class Config:
        fields = {"id_": "id"}


class MenuCategoryLink(BaseModel): # Hack to prevent circular error
    id_: uuid.UUID = Field(...)
    products: Optional[List[ProductLink]]

    class Config:
        fields = {"id_": "id"}


class ProductIn(BaseModel):
    name: str = Field(..., min_length=1)
    units: str
    menu_category: MenuCategoryLink = Field(...)
    sale_category: SaleCategoryLink = Field(...)
    price: Decimal # = Field(ge=0, multiple_of=0.01, default=0)
    has_happy_hour: bool
    is_not_available: bool
    quantity: Decimal = Field(ge=0, multiple_of=0.01, default=0)
    is_active: bool
    sort_order: int

    class Config:
        fields = {"id_": "id"}
        anystr_strip_whitespace = True
        alias_generator = to_camel


class Product(ProductIn):
    id_: uuid.UUID