"""Invitation code model for registration gating."""

import uuid
from datetime import datetime

from sqlalchemy import Boolean, DateTime, ForeignKey, Integer, String, func
from sqlalchemy.dialects.postgresql import UUID
from sqlalchemy.orm import Mapped, mapped_column

from app.database import Base


class InvitationCode(Base):
    """An invitation code that can be used to register new accounts."""

    __tablename__ = "invitation_codes"

    id: Mapped[uuid.UUID] = mapped_column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
    code: Mapped[str] = mapped_column(String(32), unique=True, nullable=False, index=True)
    tenant_id: Mapped[uuid.UUID | None] = mapped_column(UUID(as_uuid=True), ForeignKey("tenants.id"), nullable=True, index=True)
    max_uses: Mapped[int] = mapped_column(Integer, default=1, nullable=False)
    used_count: Mapped[int] = mapped_column(Integer, default=0, nullable=False)
    is_active: Mapped[bool] = mapped_column(Boolean, default=True, nullable=False)
    created_by: Mapped[uuid.UUID | None] = mapped_column(UUID(as_uuid=True), ForeignKey("users.id"), nullable=True)
    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now())