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


class GanttTaskInstance(BaseModel):
    """Task instance data for Gantt chart."""

    task_id: str
    task_display_name: str
    try_number: int
    state: TaskInstanceState | None
    scheduled_dttm: datetime | None
    queued_dttm: datetime | None
    start_date: datetime | None
    end_date: datetime | None
    is_group: bool = False
    is_mapped: bool = False


class GanttResponse(BaseModel):
    """Response for Gantt chart endpoint."""

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