"""In-app notification model."""
import uuid
from datetime import datetime, timezone
from typing import Optional, TYPE_CHECKING

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

from app.core.database import Base

if TYPE_CHECKING:
    from app.models.user import User


class Notification(Base):
    __tablename__ = "notifications"

    id: Mapped[uuid.UUID] = mapped_column(
        UUID(as_uuid=True), primary_key=True, default=uuid.uuid4
    )
    account_id: Mapped[uuid.UUID] = mapped_column(
        UUID(as_uuid=True),
        ForeignKey("accounts.id", ondelete="CASCADE"),
        nullable=False,
        index=True,
    )
    user_id: Mapped[uuid.UUID] = mapped_column(
        UUID(as_uuid=True),
        ForeignKey("users.id", ondelete="CASCADE"),
        nullable=False,
        index=True,
    )
    event: Mapped[str] = mapped_column(String(50), nullable=False)
    title: Mapped[str] = mapped_column(String(200), nullable=False)
    body: Mapped[Optional[str]] = mapped_column(String(500), nullable=True)
    link: Mapped[Optional[str]] = mapped_column(String(500), nullable=True)
    is_read: Mapped[bool] = mapped_column(Boolean, default=False)
    created_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True),
        default=lambda: datetime.now(timezone.utc),
        index=True,
    )

    user: Mapped[Optional["User"]] = relationship("User", foreign_keys=[user_id])