from __future__ import annotations

from decimal import Decimal

from sqlalchemy import CheckConstraint, ForeignKey, Index, Numeric, String
from sqlalchemy.orm import Mapped, mapped_column

from app.models.base import Base, TimestampMixin


class TeamSubscriptionSeatUsage(Base, TimestampMixin):
    __tablename__ = "team_subscription_seat_usages"
    __table_args__ = (
        Index("uq_team_subscription_seat_usage_period", "seat_id", "subscription_period_id", unique=True),
        CheckConstraint("used_credits >= 0", name="ck_team_subscription_seat_usage_nonnegative"),
        Index("ix_team_subscription_seat_usage_member", "subscription_period_id", "user_id"),
    )

    id: Mapped[str] = mapped_column(String(32), primary_key=True)
    seat_id: Mapped[str] = mapped_column(
        String(32), ForeignKey("team_subscription_seats.id", ondelete="RESTRICT"), nullable=False
    )
    subscription_id: Mapped[str] = mapped_column(
        String(32), ForeignKey("user_credit_subscriptions.id", ondelete="RESTRICT"), nullable=False
    )
    subscription_period_id: Mapped[str] = mapped_column(
        String(32), ForeignKey("user_credit_subscription_periods.id", ondelete="RESTRICT"), nullable=False
    )
    user_id: Mapped[str] = mapped_column(
        String(32), ForeignKey("users.id", ondelete="RESTRICT"), nullable=False
    )
    used_credits: Mapped[Decimal] = mapped_column(
        Numeric(20, 2), nullable=False, default=Decimal("0.00"), server_default="0"
    )