import uuid
from datetime import datetime
from sqlalchemy import Column, String, DateTime, Text, ForeignKey, Enum as SqlEnum, JSON
from sqlalchemy.orm import relationship
from utils.utils import Base

class User(Base):
    __tablename__ = "users"
    
    id = Column(String(36), primary_key=True, default=lambda: str(uuid.uuid4()))
    email = Column(String(255), unique=True, nullable=False, index=True)
    password_hash = Column(String(255), nullable=False)
    first_name = Column(String(100), nullable=True)
    last_name = Column(String(100), nullable=True)
    role = Column(String(50), nullable=False, default="REGISTERED")
    registration_date = Column(DateTime, nullable=False, default=datetime.utcnow)
    last_login_date = Column(DateTime, nullable=True)
    status = Column(String(50), nullable=False, default="ACTIVE")
    profile_picture_url = Column(Text, nullable=True)
    preferences = Column(JSON, nullable=True)
    created_at = Column(DateTime, default=datetime.utcnow, nullable=False)
    updated_at = Column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow, nullable=False)
    
    # Relationships
    watchlists = relationship("Watchlist", back_populates="user")
    user_activities = relationship("Useractivity", back_populates="user")
    modified_configurations = relationship("Systemconfiguration", back_populates="modified_by_user")


class Useractivity(Base):
    __tablename__ = "user_activities"
    
    id = Column(String(36), primary_key=True, default=lambda: str(uuid.uuid4()))
    user_id = Column(String(36), ForeignKey("users.id", ondelete="CASCADE"), nullable=False, index=True)
    stock_id = Column(String(36), ForeignKey("stocks.id", ondelete="CASCADE"), nullable=False, index=True)
    activity_type = Column(String(50), nullable=False)
    timestamp = Column(DateTime, nullable=False, default=datetime.utcnow)
    session_id = Column(String(255), nullable=True)
    created_at = Column(DateTime, default=datetime.utcnow, nullable=False)
    updated_at = Column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow, nullable=False)
    
    # Relationships
    user = relationship("User", back_populates="user_activities")
    stock = relationship("Stock", back_populates="user_activities")