from __future__ import annotations

import uuid
from typing import Any

from sqlalchemy import Index, Integer, JSON, String, UniqueConstraint
from sqlalchemy.orm import Mapped, mapped_column

from govoplan_core.db.base import Base, TimestampMixin


def new_uuid() -> str:
    return str(uuid.uuid4())


class DashboardLayout(Base, TimestampMixin):
    __tablename__ = "dashboard_layouts"
    __table_args__ = (
        UniqueConstraint(
            "tenant_id",
            "account_id",
            "context_key",
            name="uq_dashboard_layouts_actor_context",
        ),
        Index(
            "ix_dashboard_layouts_actor",
            "tenant_id",
            "account_id",
        ),
    )

    id: Mapped[str] = mapped_column(
        String(36),
        primary_key=True,
        default=new_uuid,
    )
    tenant_id: Mapped[str] = mapped_column(
        String(36),
        nullable=False,
        index=True,
    )
    account_id: Mapped[str] = mapped_column(
        String(255),
        nullable=False,
        index=True,
    )
    context_key: Mapped[str] = mapped_column(
        String(300),
        nullable=False,
        index=True,
    )
    view_id: Mapped[str | None] = mapped_column(
        String(255),
        nullable=True,
        index=True,
    )
    layout_version: Mapped[int] = mapped_column(
        Integer,
        default=1,
        nullable=False,
    )
    revision: Mapped[int] = mapped_column(
        Integer,
        default=1,
        nullable=False,
    )
    placements: Mapped[list[dict[str, Any]]] = mapped_column(
        JSON,
        default=list,
        nullable=False,
    )
    known_widget_ids: Mapped[list[str]] = mapped_column(
        JSON,
        default=list,
        nullable=False,
    )


__all__ = ["DashboardLayout", "new_uuid"]