from datetime import datetime
from sqlalchemy import Column, Integer, String, Boolean, DateTime, ForeignKey, Text
from sqlalchemy.orm import relationship

from app.core.database import Base


class Dept(Base):
    __tablename__ = "sys_dept"

    id = Column(Integer, primary_key=True, index=True)
    name = Column(String(100), nullable=False)
    parent_id = Column(Integer, ForeignKey("sys_dept.id"), nullable=True)
    sort_order = Column(Integer, default=0)
    created_at = Column(DateTime, default=datetime.utcnow)

    parent = relationship("Dept", remote_side=[id], backref="children")


class Role(Base):
    __tablename__ = "sys_role"

    id = Column(Integer, primary_key=True, index=True)
    name = Column(String(50), unique=True, nullable=False)
    code = Column(String(50), unique=True, nullable=False)
    description = Column(String(200))
    created_at = Column(DateTime, default=datetime.utcnow)


class User(Base):
    __tablename__ = "sys_user"

    id = Column(Integer, primary_key=True, index=True)
    username = Column(String(50), unique=True, nullable=False, index=True)
    email = Column(String(100), unique=True, nullable=True)
    hashed_password = Column(String(255), nullable=False)
    real_name = Column(String(50))
    phone = Column(String(20))
    is_active = Column(Boolean, default=True)
    is_superuser = Column(Boolean, default=False)
    dept_id = Column(Integer, ForeignKey("sys_dept.id"), nullable=True)
    created_at = Column(DateTime, default=datetime.utcnow)
    updated_at = Column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)

    dept = relationship("Dept")
    roles = relationship("Role", secondary="sys_user_role", backref="users")


class UserRole(Base):
    __tablename__ = "sys_user_role"

    id = Column(Integer, primary_key=True, index=True)
    user_id = Column(Integer, ForeignKey("sys_user.id"), nullable=False)
    role_id = Column(Integer, ForeignKey("sys_role.id"), nullable=False)