from datetime import datetime
import uuid

from sqlalchemy import JSON, Boolean, DateTime, ForeignKey, String, Text, func
from sqlalchemy.orm import Mapped, mapped_column, relationship

from app.core.database import Base


class Device(Base):
    __tablename__ = "devices"

    id: Mapped[uuid.UUID] = mapped_column(primary_key=True, default=uuid.uuid4)
    user_id: Mapped[uuid.UUID] = mapped_column(ForeignKey("users.id", ondelete="CASCADE"), index=True)
    name: Mapped[str] = mapped_column(String(255))
    platform: Mapped[str] = mapped_column(String(64), default="android")
    public_key_pem: Mapped[str] = mapped_column(Text)
    public_key_alg: Mapped[str] = mapped_column(String(64), default="ES256")
    fcm_token: Mapped[str | None] = mapped_column(Text, nullable=True)
    app_version: Mapped[str | None] = mapped_column(String(64), nullable=True)
    attestation: Mapped[dict | None] = mapped_column(JSON, nullable=True)
    is_revoked: Mapped[bool] = mapped_column(Boolean, default=False, index=True)
    revoked_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True), nullable=True)
    last_seen_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True), nullable=True)
    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now())

    user = relationship("User", back_populates="devices")