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"""Contains the TaskNotRunningDep."""

from airflow.ti_deps.deps.base_ti_dep import BaseTIDep
from airflow.utils.session import provide_session
from airflow.utils.state import State


class TaskNotRunningDep(BaseTIDep):
    """Ensures that the task instance's state is not running."""

    NAME = "Task Instance Not Running"
    IGNORABLE = False

    def __eq__(self, other):
        return type(self) == type(other)

    def __hash__(self):
        return hash(type(self))

    @provide_session
    def _get_dep_statuses(self, ti, session, dep_context=None):
        if ti.state != State.RUNNING:
            yield self._passing_status(reason="Task is not in running state.")
            return

        yield self._failing_status(reason='Task is in the running state')
