"""User session database model for tracking active sessions."""

import uuid
from sqlalchemy import Column, String, Boolean, ForeignKey, Text
from sqlalchemy.sql import func
from sqlalchemy.types import DateTime

from app.db.base import Base


class UserSession(Base):
    """User session model for tracking active sessions."""

    __tablename__ = "user_sessions"

    id = Column(String(36), primary_key=True, default=lambda: str(uuid.uuid4()))

    # User
    user_id = Column(String(36), ForeignKey("users.id", ondelete="CASCADE"), nullable=False, index=True)

    # Token hash (to identify and revoke specific sessions)
    token_hash = Column(String(64), unique=True, nullable=False, index=True)

    # Device/client info
    device_name = Column(String(200), nullable=True)  # User-friendly name
    device_type = Column(String(50), nullable=True)  # desktop, mobile, tablet
    browser = Column(String(100), nullable=True)
    os = Column(String(100), nullable=True)
    user_agent = Column(String(500), nullable=True)

    # Location info
    ip_address = Column(String(45), nullable=True)
    location = Column(String(200), nullable=True)  # City, Country

    # Status
    is_active = Column(Boolean, default=True, nullable=False)
    is_current = Column(Boolean, default=False, nullable=False)  # Marks the current session

    # Timestamps
    created_at = Column(DateTime, server_default=func.now(), nullable=False, index=True)
    last_active_at = Column(DateTime, server_default=func.now(), nullable=False)
    expires_at = Column(DateTime, nullable=True)
    revoked_at = Column(DateTime, nullable=True)

    def __repr__(self):
        return f"<UserSession(id={self.id}, user_id={self.user_id}, device={self.device_name})>"