from sqlalchemy import Column, DateTime, String, Text

from app import db
from .base import TimestampMixin, default_uuid


class KioskDevice(db.Model, TimestampMixin):
    """Persistent registry of kiosk terminals."""

    __tablename__ = "kiosk_device"

    id = Column(String(36), primary_key=True, default=default_uuid)
    device_fingerprint = Column(String(255), nullable=True)
    display_name = Column(String(120), nullable=False, default="terminal")
    status = Column(String(20), nullable=False, default="pending")  # pending|active|revoked
    access_slug = Column(String(64), nullable=True, unique=True, index=True)
    last_seen_at = Column(DateTime, nullable=True)
    last_ip = Column(String(45), nullable=True)


class KioskPairToken(db.Model):
    """One-time short-lived token for QR pairing."""

    __tablename__ = "kiosk_pair_token"

    id = Column(String(36), primary_key=True, default=default_uuid)
    token = Column(String(255), nullable=False, unique=True, index=True)
    device_id = Column(String(36), nullable=False, index=True)
    expires_at = Column(DateTime, nullable=False)
    used_at = Column(DateTime, nullable=True)
    issued_for = Column(Text, nullable=True)