#
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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
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"""
This DAG will use Papermill to run the notebook "hello_world", based on the logical date
it will create an output notebook "out-<date>". All fields, including the keys in the parameters, are
templated.
"""

from __future__ import annotations

import os
from datetime import datetime, timedelta

import scrapbook as sb

from airflow import DAG

try:
    from airflow.sdk import task
except ImportError:
    # Airflow 2 path
    from airflow.decorators import task  # type: ignore[attr-defined,no-redef]
from airflow.providers.papermill.operators.papermill import PapermillOperator

START_DATE = datetime(2021, 1, 1)
SCHEDULE_INTERVAL = "0 0 * * *"
DAGRUN_TIMEOUT = timedelta(minutes=60)
ENV_ID = os.environ.get("SYSTEM_TESTS_ENV_ID")
DAG_ID = "example_papermill_operator_verify"


# [START howto_verify_operator_papermill]
@task
def check_notebook(output, logical_date):
    """
    Verify the message in the notebook
    """
    notebook = sb.read_notebook(output.url)
    message = notebook.scraps["message"]
    print(f"Message in notebook {message} for {logical_date}")

    if message.data != f"Ran from Airflow at {logical_date}!":
        return False

    return True


with DAG(
    dag_id="example_papermill_operator_verify",
    schedule=SCHEDULE_INTERVAL,
    start_date=START_DATE,
    dagrun_timeout=DAGRUN_TIMEOUT,
    catchup=False,
) as dag:
    run_this = PapermillOperator(
        task_id="run_example_notebook",
        input_nb=os.path.join(os.path.dirname(os.path.realpath(__file__)), "input_notebook.ipynb"),
        output_nb="/tmp/out-{{ logical_date }}.ipynb",
        parameters={"msgs": "Ran from Airflow at {{ logical_date }}!"},
    )

    check_notebook(output=run_this.output, logical_date="{{ logical_date }}")
# [END howto_verify_operator_papermill]

from tests_common.test_utils.system_tests import get_test_run  # noqa: E402

# Needed to run the example DAG with pytest (see: contributing-docs/testing/system_tests.rst)
test_run = get_test_run(dag)
