from pydantic import field_validator
from sqlalchemy import Column, Integer, String, Boolean, ForeignKey, DateTime
from sqlalchemy.orm import relationship
from datetime import datetime
from db.session import Base

class User(Base):
    __tablename__ = "users"

    id = Column(Integer, primary_key=True, index=True)
    name = Column(String, nullable=False)
    email = Column(String, unique=True, index=True, nullable=False)
    password_hash = Column(String, nullable=False)
    is_active = Column(Boolean, default=True)
    role_id = Column(Integer, ForeignKey("roles.id"), nullable=False)
    university_id = Column(Integer, ForeignKey("university.id"), nullable=True)
    activation_date = Column(DateTime, nullable=True)
    last_login = Column(DateTime, nullable=True)
    is_email_verified = Column(Boolean, default=False)
    is_phone_verified = Column(Boolean, default=False)
    phone_number = Column(String, nullable=True)
    profile_picture = Column(String, nullable=True)
    department = Column(String, nullable=True)
    educational_degree = Column(String, nullable=True)
    subscription_package = Column(String, nullable=True)
    subscription_start_date = Column(DateTime, nullable=True)
    subscription_end_date = Column(DateTime, nullable=True)
    subscription_status = Column(String, nullable=True)  # e.g., 'active', 'expired', 'cancelled'
    subscription_renewal_date = Column(DateTime, nullable=True)
    created_at = Column(DateTime, default=datetime.utcnow)
    updated_at = Column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)
    role = relationship("Role", back_populates="users")  # Assuming a Role model exists
    course_logs = relationship("UserCourseLog", back_populates="user", cascade="all, delete")
    university = relationship("University", back_populates="users")
    courses = relationship("Course", back_populates="user")
    platform_id = Column(Integer, ForeignKey("lms_platforms.id"))

    # Relation back to LMSPlatform
    lms_platform = relationship("LMSPlatform", back_populates="users")