from __future__ import annotations

from dataclasses import dataclass, field
from datetime import UTC, datetime
from uuid import uuid4


@dataclass(slots=True)
class PointsOrder:
    id: str
    user_id: str
    order_type: str  # membership / points
    product_code: str
    amount_cents: int
    original_amount_cents: int = 0
    discount: float = 1.0
    points_amount: int = 0
    status: str = "pending"
    payment_method: str | None = None
    payment_id: str | None = None
    paid_at: datetime | None = None
    created_at: datetime = field(default_factory=lambda: datetime.now(UTC))

    @classmethod
    def create(
        cls,
        user_id: str,
        order_type: str,
        product_code: str,
        amount_cents: int,
        *,
        original_amount_cents: int = 0,
        discount: float = 1.0,
        points_amount: int = 0,
    ) -> "PointsOrder":
        return cls(
            id=uuid4().hex,
            user_id=user_id,
            order_type=order_type,
            product_code=product_code,
            amount_cents=amount_cents,
            original_amount_cents=original_amount_cents,
            discount=discount,
            points_amount=points_amount,
        )