"""Notification model — in-app notifications for user actions."""

# Import uuid
import uuid

# Import Boolean, Column, DateTime, ForeignKey, Index, S... from sqlalchemy
from sqlalchemy import Boolean, Column, DateTime, ForeignKey, Index, String, Text, func

# Import UUID from sqlalchemy.dialects.postgresql
from sqlalchemy.dialects.postgresql import UUID

# Import relationship from sqlalchemy.orm
from sqlalchemy.orm import relationship

# Import Base from app.database
from app.database import Base


# Define class Notification
class Notification(Base):
    """In-app notification for alerting users when they need to act.

    Types include: test_assigned, validation_needed, test_rejected,
    test_validated, test_state_changed, etc.
    """
    # Assign __tablename__ = "notifications"
    __tablename__ = "notifications"

    # Assign id = Column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
    id = Column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
    # Assign user_id = Column(UUID(as_uuid=True), ForeignKey("users.id"), nullable=False)
    user_id = Column(UUID(as_uuid=True), ForeignKey("users.id"), nullable=False)
    # Assign type = Column(String, nullable=False)
    type = Column(String, nullable=False)
    # Assign title = Column(String, nullable=False)
    title = Column(String, nullable=False)
    # Assign message = Column(Text, nullable=True)
    message = Column(Text, nullable=True)
    # Assign entity_type = Column(String, nullable=True)
    entity_type = Column(String, nullable=True)
    # Assign entity_id = Column(UUID(as_uuid=True), nullable=True)
    entity_id = Column(UUID(as_uuid=True), nullable=True)
    # Assign read = Column(Boolean, default=False)
    read = Column(Boolean, default=False)
    # Assign created_at = Column(DateTime(timezone=True), server_default=func.now())
    created_at = Column(DateTime(timezone=True), server_default=func.now())

    # Relationships
    user = relationship("User")

    # Assign __table_args__ = (
    __table_args__ = (
        Index("ix_notifications_user_id", "user_id"),
        Index("ix_notifications_read", "read"),
        Index("ix_notifications_created_at", "created_at"),
    )
