# =============================================================================
#  license_server/models.py — SQLAlchemy ORM models
# =============================================================================

import uuid
from datetime import datetime, timezone

from sqlalchemy import Boolean, DateTime, Integer, String
from sqlalchemy.orm import Mapped, mapped_column

from .database import Base


def _now() -> datetime:
    return datetime.now(timezone.utc)


def _uuid() -> str:
    return str(uuid.uuid4())


class License(Base):
    """One row per serial number issued by AR Electronics."""

    __tablename__ = "licenses"

    id: Mapped[int]         = mapped_column(Integer, primary_key=True, autoincrement=True)
    serial: Mapped[str]     = mapped_column(String(20), unique=True, nullable=False, index=True)
    vessel: Mapped[str]     = mapped_column(String(120), default="")
    issued_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), default=_now)
    is_active: Mapped[bool] = mapped_column(Boolean, default=True)
    notes: Mapped[str]      = mapped_column(String(500), default="")


class Activation(Base):
    """One row per successful hardware activation of a serial number."""

    __tablename__ = "activations"

    id: Mapped[int]              = mapped_column(Integer, primary_key=True, autoincrement=True)
    activation_id: Mapped[str]   = mapped_column(String(36), unique=True, default=_uuid, index=True)
    serial: Mapped[str]          = mapped_column(String(20), nullable=False, index=True)
    hardware_id: Mapped[str]     = mapped_column(String(64), nullable=False)
    app_version: Mapped[str]     = mapped_column(String(20), default="")
    platform: Mapped[str]        = mapped_column(String(20), default="")
    hostname: Mapped[str]        = mapped_column(String(120), default="")
    activated_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), default=_now)
    last_seen_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), default=_now)
    vessel_slot: Mapped[int]     = mapped_column(Integer, default=1)
    revoked: Mapped[bool]        = mapped_column(Boolean, default=False)
    licensed_to: Mapped[str]     = mapped_column(String(120), default="")