from sqlalchemy import Column, String, Integer, Boolean, DateTime, ForeignKey
from sqlalchemy.orm import relationship
from sqlalchemy.sql import func
from core.database import Base
import uuid
from datetime import datetime

class User(Base):
    __tablename__ = "users"
    id = Column(String, primary_key=True, default=lambda: str(uuid.uuid4()))
    first_name = Column(String, nullable=False)
    last_name = Column(String, nullable=False)
    email = Column(String, unique=True, nullable=False, index=True)
    password = Column(String, nullable=False)
    role = Column(String, nullable=False, default="student")
    grade_level = Column(Integer, nullable=True)
    student_id = Column(String, unique=True, nullable=True)
    phone_number = Column(String, nullable=True)
    address = Column(String, nullable=True)
    date_of_birth = Column(DateTime, nullable=True)
    is_active = Column(Boolean, default=True)
    last_login = Column(DateTime, nullable=True)
    profile_picture = Column(String, nullable=True)
    created_at = Column(DateTime, default=func.now())
    updated_at = Column(DateTime, default=func.now(), onupdate=func.now())