"""Network diagram model."""
import uuid
from datetime import datetime, timezone
from typing import Any, TYPE_CHECKING

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

from app.core.database import Base

if TYPE_CHECKING:
    from app.models.user import User


class NetworkDiagram(Base):
    """A network topology diagram scoped to one account."""
    __tablename__ = "network_diagrams"

    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,
    )
    name: Mapped[str] = mapped_column(String(255), nullable=False)
    client_name: Mapped[str | None] = mapped_column(String(255), nullable=True)
    asset_name: Mapped[str | None] = mapped_column(String(255), nullable=True)
    description: Mapped[str | None] = mapped_column(Text, nullable=True)
    nodes: Mapped[list[dict[str, Any]]] = mapped_column(JSONB, nullable=False, server_default=text("'[]'::jsonb"))
    edges: Mapped[list[dict[str, Any]]] = mapped_column(JSONB, nullable=False, server_default=text("'[]'::jsonb"))
    thumbnail_url: Mapped[str | None] = mapped_column(Text, nullable=True)
    is_archived: Mapped[bool] = mapped_column(
        Boolean, nullable=False, default=False,
    )
    created_by: Mapped[uuid.UUID | None] = mapped_column(
        UUID(as_uuid=True),
        ForeignKey("users.id"),
        nullable=True,
    )
    created_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True), default=lambda: datetime.now(timezone.utc)
    )
    updated_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True),
        default=lambda: datetime.now(timezone.utc),
        onupdate=lambda: datetime.now(timezone.utc),
    )

    creator: Mapped["User | None"] = relationship("User", foreign_keys=[created_by])