"""Notification model — notifications for users and agents."""

import uuid
from datetime import datetime

from sqlalchemy import Boolean, DateTime, ForeignKey, String, Text, func
from sqlalchemy.dialects.postgresql import UUID
from sqlalchemy.orm import Mapped, mapped_column

from app.database import Base


class Notification(Base):
    """A notification delivered to a user or an agent."""

    __tablename__ = "notifications"

    id: Mapped[uuid.UUID] = mapped_column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
    user_id: Mapped[uuid.UUID | None] = mapped_column(UUID(as_uuid=True), ForeignKey("users.id"), nullable=True, index=True)
    agent_id: Mapped[uuid.UUID | None] = mapped_column(UUID(as_uuid=True), ForeignKey("agents.id"), nullable=True, index=True)
    type: Mapped[str] = mapped_column(String(50), nullable=False)
    # Types: approval_pending, approval_resolved, plaza_comment, plaza_reply,
    #        mention, broadcast, skill_install_request, skill_installed, system
    title: Mapped[str] = mapped_column(String(200), nullable=False)
    body: Mapped[str] = mapped_column(Text, nullable=False, default="")
    link: Mapped[str | None] = mapped_column(String(500))  # Frontend route to navigate to
    ref_id: Mapped[uuid.UUID | None] = mapped_column(UUID(as_uuid=True))  # Related object ID
    sender_name: Mapped[str | None] = mapped_column(String(100))  # Who sent this notification
    is_read: Mapped[bool] = mapped_column(Boolean, default=False, nullable=False)
    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now(), index=True)