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

from app.core.database import Base


class Notification(Base):
    __tablename__ = "notifications"

    id = Column(Integer, primary_key=True, index=True)
    user_id = Column(Integer, ForeignKey("users.id"), nullable=False)
    tenant_id = Column(Integer, ForeignKey("tenants.id"), nullable=False)
    title = Column(String, nullable=False)
    message = Column(Text, nullable=False)
    notification_type = Column(String, nullable=False)  # info, warning, error, success
    is_read = Column(Boolean, default=False, nullable=False)
    link = Column(String, nullable=True)
    created_at = Column(DateTime, default=lambda: datetime.now(timezone.utc), index=True)

    # Relationships
    user = relationship("User")
    tenant = relationship("Tenant")