from __future__ import annotations

from datetime import datetime
from decimal import Decimal
from typing import Annotated

from pydantic import BaseModel, ConfigDict, Field, StrictBool, StrictInt, StrictStr, StringConstraints

NameField = Annotated[
    StrictStr,
    StringConstraints(strip_whitespace=True, min_length=3, max_length=120),
]
DescriptionField = Annotated[
    StrictStr,
    StringConstraints(strip_whitespace=True, min_length=1, max_length=1000),
]


class ProductCreate(BaseModel):
    model_config = ConfigDict(extra="forbid")

    name: NameField
    description: DescriptionField | None = None
    price: Annotated[Decimal, Field(gt=0, max_digits=10, decimal_places=2)]
    stock: Annotated[StrictInt, Field(ge=0, le=1_000_000)]
    is_active: StrictBool = True


class ProductResponse(BaseModel):
    model_config = ConfigDict(from_attributes=True, extra="forbid")

    id: int
    name: str
    description: str | None
    price: Decimal
    stock: int
    is_active: bool
    created_at: datetime