from sqlalchemy import Column, Integer, String, DateTime, ForeignKey, func
from sqlalchemy.orm import relationship
from sqlalchemy.ext.declarative import declarative_base
from datetime import datetime

Base = declarative_base()


class Role(Base):
    """角色数据库模型"""
    __tablename__ = "role"
    id = Column(Integer, primary_key=True, index=True, comment="角色ID")
    name = Column(String(50), nullable=False, unique=True, comment="角色名称")
    createtime = Column(DateTime, default=datetime.utcnow, comment="创建时间")
    updatetime = Column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow, comment="更新时间")
    creator = Column(String(50), nullable=True, comment="创建人")
    
    # 关联到User
    users = relationship("User", back_populates="role_rel")


class User(Base):
    """用户数据库模型"""
    __tablename__ = "users"
    id = Column(Integer, primary_key=True, index=True)
    username = Column(String(50), unique=True, nullable=False, comment="登录名")
    nickname = Column(String(50), nullable=False, comment="昵称")
    email = Column(String(50), nullable=True, comment="电子邮箱")
    phone = Column(String(11), nullable=True, comment="手机号码")
    wx_openid = Column(String(100), nullable=True, comment="微信OpenID")
    password_hash = Column(String(128), nullable=False, comment="密码哈希值")
    avatar = Column(String(255), nullable=True, comment="头像路径")
    role_id = Column(Integer, ForeignKey("role.id"), default=2, comment="角色ID")
    createtime = Column(DateTime, default=datetime.utcnow, comment="创建时间")
    updatetime = Column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow, comment="更新时间")
    lastlogintime = Column(DateTime, nullable=True, comment="最后登录时间")
    
    # 关联到Role
    role_rel = relationship("Role", back_populates="users")