"""App 版本管理模型 — 用于 OTA 热更新"""
import uuid
from datetime import datetime
from sqlalchemy import String, DateTime, Boolean, Text, Integer
from sqlalchemy.dialects.postgresql import UUID
from sqlalchemy.orm import Mapped, mapped_column

from app.models.base import Base
from app.core.time_utils import get_beijing_time


class AppVersion(Base):
    __tablename__ = "app_versions"

    id: Mapped[uuid.UUID] = mapped_column(
        UUID(as_uuid=True), primary_key=True, default=uuid.uuid4,
    )

    version: Mapped[str] = mapped_column(
        String(20), nullable=False, unique=True, comment="版本号，如 T1.0.1",
    )

    version_code: Mapped[int] = mapped_column(
        Integer, nullable=False, default=100, comment="数字版本号，用于比较",
    )

    wgt_url: Mapped[str] = mapped_column(
        String(500), nullable=False, comment="WGT 升级包下载地址",
    )

    description: Mapped[str | None] = mapped_column(
        Text, nullable=True, comment="更新说明",
    )

    is_active: Mapped[bool] = mapped_column(
        Boolean, default=True, comment="是否启用",
    )

    created_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True), default=get_beijing_time,
    )

    def __repr__(self) -> str:
        return f"<AppVersion {self.version}>"