from celery.exceptions import MaxRetriesExceededError
from app.celery import provider_tasks
from app.celery.provider_tasks import send_sms_to_provider, send_email_to_provider, deliver_sms, deliver_email
from app.clients.email import EmailClientException
from app.models import Notification
from tests.app.conftest import sample_notification
import app


def test_should_have_decorated_tasks_functions():
    assert send_sms_to_provider.__wrapped__.__name__ == 'send_sms_to_provider'
    assert send_email_to_provider.__wrapped__.__name__ == 'send_email_to_provider'


def test_should_by_10_second_delay_as_default():
    assert provider_tasks.retry_iteration_to_delay() == 10


def test_should_by_10_second_delay_on_unmapped_retry_iteration():
    assert provider_tasks.retry_iteration_to_delay(99) == 10


def test_should_by_10_second_delay_on_retry_one():
    assert provider_tasks.retry_iteration_to_delay(0) == 10


def test_should_by_1_minute_delay_on_retry_two():
    assert provider_tasks.retry_iteration_to_delay(1) == 60


def test_should_by_5_minute_delay_on_retry_two():
    assert provider_tasks.retry_iteration_to_delay(2) == 300


def test_should_by_60_minute_delay_on_retry_two():
    assert provider_tasks.retry_iteration_to_delay(3) == 3600


def test_should_by_240_minute_delay_on_retry_two():
    assert provider_tasks.retry_iteration_to_delay(4) == 14400


def test_should_call_send_sms_to_provider_from_deliver_sms_task(
        notify_db,
        notify_db_session,
        sample_notification,
        mocker):
    mocker.patch('app.delivery.send_to_providers.send_sms_to_provider')

    deliver_sms(sample_notification.id)
    app.delivery.send_to_providers.send_sms_to_provider.assert_called_with(sample_notification)


def test_should_add_to_retry_queue_if_notification_not_found_in_deliver_sms_task(
        notify_db,
        notify_db_session,
        mocker):
    mocker.patch('app.delivery.send_to_providers.send_sms_to_provider')
    mocker.patch('app.celery.provider_tasks.deliver_sms.retry')

    notification_id = app.create_uuid()

    deliver_sms(notification_id)
    app.delivery.send_to_providers.send_sms_to_provider.assert_not_called()
    app.celery.provider_tasks.deliver_sms.retry.assert_called_with(queue="retry", countdown=10)


def test_should_call_send_sms_to_provider_from_send_sms_to_provider_task(
        notify_db,
        notify_db_session,
        sample_notification,
        mocker):
    mocker.patch('app.delivery.send_to_providers.send_sms_to_provider')

    send_sms_to_provider(sample_notification.service_id, sample_notification.id)
    app.delivery.send_to_providers.send_sms_to_provider.assert_called_with(sample_notification)


def test_should_add_to_retry_queue_if_notification_not_found_in_send_sms_to_provider_task(
        notify_db,
        notify_db_session,
        mocker):
    mocker.patch('app.delivery.send_to_providers.send_sms_to_provider')
    mocker.patch('app.celery.provider_tasks.send_sms_to_provider.retry')

    notification_id = app.create_uuid()
    service_id = app.create_uuid()

    send_sms_to_provider(service_id, notification_id)
    app.delivery.send_to_providers.send_sms_to_provider.assert_not_called()
    app.celery.provider_tasks.send_sms_to_provider.retry.assert_called_with(queue="retry", countdown=10)


def test_should_call_send_email_to_provider_from_deliver_email_task(
        notify_db,
        notify_db_session,
        sample_notification,
        mocker):
    mocker.patch('app.delivery.send_to_providers.send_email_to_provider')

    deliver_email(sample_notification.id)
    app.delivery.send_to_providers.send_email_to_provider.assert_called_with(sample_notification)


def test_should_add_to_retry_queue_if_notification_not_found_in_deliver_email_task(
        notify_db,
        notify_db_session,
        mocker):
    mocker.patch('app.delivery.send_to_providers.send_email_to_provider')
    mocker.patch('app.celery.provider_tasks.deliver_email.retry')

    notification_id = app.create_uuid()

    deliver_email(notification_id)
    app.delivery.send_to_providers.send_email_to_provider.assert_not_called()
    app.celery.provider_tasks.deliver_email.retry.assert_called_with(queue="retry", countdown=10)


def test_should_call_send_email_to_provider_from_email_task(
        notify_db,
        notify_db_session,
        sample_notification,
        mocker):
    mocker.patch('app.delivery.send_to_providers.send_email_to_provider')

    send_email_to_provider(sample_notification.service_id, sample_notification.id)
    app.delivery.send_to_providers.send_email_to_provider.assert_called_with(sample_notification)


def test_should_add_to_retry_queue_if_notification_not_found_in_send_email_to_provider_task(
        notify_db,
        notify_db_session,
        mocker):
    mocker.patch('app.delivery.send_to_providers.send_email_to_provider')
    mocker.patch('app.celery.provider_tasks.send_email_to_provider.retry')

    notification_id = app.create_uuid()
    service_id = app.create_uuid()

    send_email_to_provider(service_id, notification_id)
    app.delivery.send_to_providers.send_email_to_provider.assert_not_called()
    app.celery.provider_tasks.send_email_to_provider.retry.assert_called_with(queue="retry", countdown=10)


def test_should_go_into_technical_error_if_exceeds_retries(
        notify_db,
        notify_db_session,
        sample_service,
        mocker):
    notification = sample_notification(notify_db=notify_db, notify_db_session=notify_db_session,
                                       service=sample_service, status='created')

    mocker.patch('app.delivery.send_to_providers.send_sms_to_provider', side_effect=Exception("EXPECTED"))
    mocker.patch('app.celery.provider_tasks.send_sms_to_provider.retry', side_effect=MaxRetriesExceededError())

    send_sms_to_provider(
        notification.service_id,
        notification.id
    )

    provider_tasks.send_sms_to_provider.retry.assert_called_with(queue='retry', countdown=10)

    db_notification = Notification.query.filter_by(id=notification.id).one()
    assert db_notification.status == 'technical-failure'


def test_send_email_to_provider_should_go_into_technical_error_if_exceeds_retries(
        notify_db,
        notify_db_session,
        sample_service,
        sample_email_template,
        mocker):
    notification = sample_notification(notify_db=notify_db, notify_db_session=notify_db_session,
                                       service=sample_service, status='created', template=sample_email_template)

    mocker.patch('app.aws_ses_client.send_email', side_effect=EmailClientException("EXPECTED"))
    mocker.patch('app.celery.provider_tasks.send_email_to_provider.retry', side_effect=MaxRetriesExceededError())

    send_email_to_provider(
        notification.service_id,
        notification.id
    )

    provider_tasks.send_email_to_provider.retry.assert_called_with(queue='retry', countdown=10)

    db_notification = Notification.query.filter_by(id=notification.id).one()
    assert db_notification.status == 'technical-failure'