#
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# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied.  See the License for the
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"""Local client API."""

from __future__ import annotations

import httpx

from airflow.api.common import delete_dag, trigger_dag
from airflow.exceptions import AirflowBadRequest, PoolNotFound
from airflow.models.pool import Pool
from airflow.utils.types import DagRunTriggeredByType


class Client:
    """Local API client implementation."""

    def __init__(self, auth=None, session: httpx.Client | None = None):
        self._session: httpx.Client = session or httpx.Client()
        if auth:
            self._session.auth = auth

    def trigger_dag(
        self,
        dag_id,
        run_id=None,
        conf=None,
        logical_date=None,
        triggering_user_name=None,
        replace_microseconds=True,
    ) -> dict | None:
        dag_run = trigger_dag.trigger_dag(
            dag_id=dag_id,
            triggered_by=DagRunTriggeredByType.CLI,
            triggering_user_name=triggering_user_name,
            run_id=run_id,
            conf=conf,
            logical_date=logical_date,
            replace_microseconds=replace_microseconds,
        )
        if dag_run:
            return {
                "conf": dag_run.conf,
                "dag_id": dag_run.dag_id,
                "dag_run_id": dag_run.run_id,
                "data_interval_start": dag_run.data_interval_start,
                "data_interval_end": dag_run.data_interval_end,
                "end_date": dag_run.end_date,
                "last_scheduling_decision": dag_run.last_scheduling_decision,
                "logical_date": dag_run.logical_date,
                "run_type": dag_run.run_type,
                "start_date": dag_run.start_date,
                "state": dag_run.state,
                "triggering_user_name": dag_run.triggering_user_name,
            }
        return dag_run

    def delete_dag(self, dag_id):
        count = delete_dag.delete_dag(dag_id)
        return f"Removed {count} record(s)"

    def get_pool(self, name):
        pool = Pool.get_pool(pool_name=name)
        if not pool:
            raise PoolNotFound(f"Pool {name} not found")
        return pool.pool, pool.slots, pool.description, pool.include_deferred

    def get_pools(self):
        return [(p.pool, p.slots, p.description, p.include_deferred) for p in Pool.get_pools()]

    def create_pool(self, name, slots, description, include_deferred):
        if not (name and name.strip()):
            raise AirflowBadRequest("Pool name shouldn't be empty")
        pool_name_length = Pool.pool.property.columns[0].type.length
        if len(name) > pool_name_length:
            raise AirflowBadRequest(f"Pool name cannot be more than {pool_name_length} characters")
        try:
            slots = int(slots)
        except ValueError:
            raise AirflowBadRequest(f"Invalid value for `slots`: {slots}")
        pool = Pool.create_or_update_pool(
            name=name, slots=slots, description=description, include_deferred=include_deferred
        )
        return pool.pool, pool.slots, pool.description

    def delete_pool(self, name):
        pool = Pool.delete_pool(name=name)
        return pool.pool, pool.slots, pool.description
