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

import os
from datetime import datetime, timedelta

from airflow import DAG
from airflow.providers.google.cloud.operators.gcs import GCSCreateBucketOperator, GCSDeleteBucketOperator
from airflow.providers.google.cloud.transfers.azure_fileshare_to_gcs import AzureFileShareToGCSOperator
from airflow.utils.trigger_rule import TriggerRule

ENV_ID = os.environ.get("SYSTEM_TESTS_ENV_ID")
PROJECT_ID = os.environ.get("SYSTEM_TESTS_GCP_PROJECT")
DAG_ID = "azure_fileshare_to_gcs_example"

BUCKET_NAME = f"bucket_{DAG_ID}_{ENV_ID}"
AZURE_SHARE_NAME = os.environ.get("AZURE_SHARE_NAME", "test-azure-share")
AZURE_DIRECTORY_NAME = "test-azure-dir"

with DAG(
    dag_id=DAG_ID,
    default_args={
        "owner": "airflow",
        "depends_on_past": False,
        "email": ["airflow@example.com"],
        "email_on_failure": False,
        "email_on_retry": False,
        "retries": 1,
        "retry_delay": timedelta(minutes=5),
    },
    schedule="@once",
    start_date=datetime(2021, 1, 1),
    catchup=False,
    tags=["example", "azure"],
) as dag:
    create_bucket = GCSCreateBucketOperator(
        task_id="create_bucket", bucket_name=BUCKET_NAME, project_id=PROJECT_ID
    )

    # [START howto_operator_azure_fileshare_to_gcs_basic]
    sync_azure_files_with_gcs = AzureFileShareToGCSOperator(
        task_id="sync_azure_files_with_gcs",
        share_name=AZURE_SHARE_NAME,
        dest_gcs=BUCKET_NAME,
        directory_name=AZURE_DIRECTORY_NAME,
        replace=False,
        gzip=True,
        google_impersonation_chain=None,
    )
    # [END howto_operator_azure_fileshare_to_gcs_basic]

    delete_bucket = GCSDeleteBucketOperator(
        task_id="delete_bucket", bucket_name=BUCKET_NAME, trigger_rule=TriggerRule.ALL_DONE
    )

    (
        # TEST SETUP
        create_bucket
        # TEST BODY
        >> sync_azure_files_with_gcs
        # TEST TEARDOWN
        >> delete_bucket
    )

    from tests.system.utils.watcher import watcher

    # This test needs watcher in order to properly mark success/failure
    # when "tearDown" task with trigger rule is part of the DAG
    list(dag.tasks) >> watcher()


from tests.system.utils import get_test_run  # noqa: E402

# Needed to run the example DAG with pytest (see: tests/system/README.md#run_via_pytest)
test_run = get_test_run(dag)
