"""
用户-软件订阅关系模型（多软件共用一套用户表）
同一用户在不同软件下可有独立的卡密与到期时间。
"""
from datetime import datetime
from app.utils.timezone import beijing_now_naive
from sqlalchemy import Column, Integer, DateTime, Boolean, UniqueConstraint, ForeignKey
from app.database import Base


class UserSoftwareSubscription(Base):
    """用户软件订阅表：user_id + software_id 唯一，存储该用户在该软件下的卡密与到期时间"""
    __tablename__ = "user_software_subscription"

    id = Column(Integer, primary_key=True, autoincrement=True, comment="主键ID")
    user_id = Column(Integer, ForeignKey("users.id"), nullable=False, comment="用户ID")
    software_id = Column(Integer, ForeignKey("software.id"), nullable=False, comment="软件ID")
    card_id = Column(Integer, nullable=True, comment="当前卡密ID")
    expire_time = Column(DateTime, nullable=True, comment="到期时间")
    is_deleted = Column(Boolean, default=False, comment="是否删除: 0-否, 1-是")
    created_at = Column(DateTime, default=beijing_now_naive, comment="创建时间")
    updated_at = Column(DateTime, default=beijing_now_naive, onupdate=beijing_now_naive, comment="更新时间")

    __table_args__ = (UniqueConstraint("user_id", "software_id", name="uq_user_software"),)

    def __repr__(self):
        return f"<UserSoftwareSubscription(user_id={self.user_id}, software_id={self.software_id})>"