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#   http://www.apache.org/licenses/LICENSE-2.0
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from __future__ import annotations

from datetime import datetime
from typing import Literal

from airflow.api_fastapi.core_api.base import BaseModel
from airflow.utils.state import TaskInstanceState


class LightGridTaskInstanceSummary(BaseModel):
    """Task Instance Summary model for the Grid UI."""

    task_id: str
    task_display_name: str
    state: TaskInstanceState | None
    child_states: dict[TaskInstanceState | Literal["none"], int] | None
    min_start_date: datetime | None
    max_end_date: datetime | None
    dag_version_number: int | None = None


class GridTISummaries(BaseModel):
    """DAG Run model for the Grid UI."""

    run_id: str
    dag_id: str
    task_instances: list[LightGridTaskInstanceSummary]
