from typing import Literal
from pydantic import BaseModel, Field
from uuid import UUID
from datetime import datetime

ProductCategory = Literal["clip-in", "tape-in", "ponytail", "keratin"]


class ProductCreate(BaseModel):
    name: str = Field(min_length=1, max_length=200)
    description: str | None = None
    price: float = Field(gt=0)
    original_price: float | None = Field(None, gt=0)
    category: ProductCategory | None = None
    colors: list[str] = []
    lengths: list[str] = []
    features: list[str] = []
    stock_quantity: int = Field(ge=0, default=0)
    is_featured: bool = False
    is_hidden: bool = False
    is_new: bool = False
    is_bestseller: bool = False


class ProductUpdate(BaseModel):
    name: str | None = Field(None, min_length=1, max_length=200)
    description: str | None = None
    price: float | None = Field(None, gt=0)
    original_price: float | None = Field(None, gt=0)
    category: ProductCategory | None = None
    colors: list[str] | None = None
    lengths: list[str] | None = None
    features: list[str] | None = None
    stock_quantity: int | None = Field(None, ge=0)
    is_featured: bool | None = None
    is_hidden: bool | None = None
    is_new: bool | None = None
    is_bestseller: bool | None = None


class StockUpdate(BaseModel):
    id: UUID
    stock_quantity: int = Field(ge=0)


class BulkStockUpdateRequest(BaseModel):
    updates: list[StockUpdate]


class ProductOut(BaseModel):
    id: UUID
    name: str
    description: str | None = None
    price: float
    original_price: float | None = None
    category: str | None = None
    image: str = ""
    images: list[str] = []
    colors: list[str] = []
    lengths: list[str] = []
    features: list[str] = []
    stock_quantity: int
    is_featured: bool
    is_hidden: bool
    is_new: bool
    is_bestseller: bool
    rating: float = 0
    review_count: int = 0
    created_at: datetime
    updated_at: datetime