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from __future__ import annotations

from unittest import mock

import pytest

from airflow.exceptions import AirflowException
from airflow.providers.google.cloud.triggers.cloud_run import CloudRunJobFinishedTrigger, RunJobStatus
from airflow.triggers.base import TriggerEvent

OPERATION_NAME = "operation"
JOB_NAME = "jobName"
PROJECT_ID = "projectId"
LOCATION = "us-central1"
GCP_CONNECTION_ID = "gcp_connection_id"
POLL_SLEEP = 0.01
TIMEOUT = 0.02
IMPERSONATION_CHAIN = "impersonation_chain"


@pytest.fixture
def trigger():
    return CloudRunJobFinishedTrigger(
        operation_name=OPERATION_NAME,
        job_name=JOB_NAME,
        project_id=PROJECT_ID,
        location=LOCATION,
        gcp_conn_id=GCP_CONNECTION_ID,
        polling_period_seconds=POLL_SLEEP,
        timeout=TIMEOUT,
        impersonation_chain=IMPERSONATION_CHAIN,
    )


class TestCloudBatchJobFinishedTrigger:
    def test_serialization(self, trigger):
        classpath, kwargs = trigger.serialize()
        assert classpath == "airflow.providers.google.cloud.triggers.cloud_run.CloudRunJobFinishedTrigger"
        assert kwargs == {
            "project_id": PROJECT_ID,
            "operation_name": OPERATION_NAME,
            "job_name": JOB_NAME,
            "location": LOCATION,
            "gcp_conn_id": GCP_CONNECTION_ID,
            "polling_period_seconds": POLL_SLEEP,
            "timeout": TIMEOUT,
            "impersonation_chain": IMPERSONATION_CHAIN,
        }

    @pytest.mark.asyncio
    @mock.patch("airflow.providers.google.cloud.triggers.cloud_run.CloudRunAsyncHook")
    async def test_trigger_on_operation_completed_yield_successfully(
        self, mock_hook, trigger: CloudRunJobFinishedTrigger
    ):
        """
        Tests the CloudRunJobFinishedTrigger fires once the job execution reaches a successful state.
        """

        done = True
        name = "name"
        error_code = 10
        error_message = "message"

        mock_hook.return_value.get_operation.return_value = self._mock_operation(
            done, name, error_code, error_message
        )
        generator = trigger.run()
        actual = await generator.asend(None)
        assert (
            TriggerEvent(
                {
                    "status": RunJobStatus.SUCCESS,
                    "job_name": JOB_NAME,
                }
            )
            == actual
        )

    @pytest.mark.asyncio
    @mock.patch("airflow.providers.google.cloud.triggers.cloud_run.CloudRunAsyncHook")
    async def test_trigger_on_operation_failed_yield_error(
        self, mock_hook, trigger: CloudRunJobFinishedTrigger
    ):
        """
        Tests the CloudRunJobFinishedTrigger raises an exception once the job execution fails.
        """

        done = False
        name = "name"
        error_code = 10
        error_message = "message"

        mock_hook.return_value.get_operation.return_value = self._mock_operation(
            done, name, error_code, error_message
        )
        generator = trigger.run()

        with pytest.raises(expected_exception=AirflowException):
            await generator.asend(None)

    @pytest.mark.asyncio
    @mock.patch("airflow.providers.google.cloud.triggers.cloud_run.CloudRunAsyncHook")
    async def test_trigger_timeout(self, mock_hook, trigger: CloudRunJobFinishedTrigger):
        """
        Tests the CloudRunJobFinishedTrigger fires once the job execution times out with an error message.
        """

        async def _mock_operation(name):
            operation = mock.MagicMock()
            operation.done = False
            operation.error = mock.MagicMock()
            operation.error.message = None
            operation.error.code = None
            return operation

        mock_hook.return_value.get_operation = _mock_operation

        generator = trigger.run()
        actual = await generator.asend(None)

        assert (
            TriggerEvent(
                {
                    "status": RunJobStatus.TIMEOUT,
                    "job_name": JOB_NAME,
                }
            )
            == actual
        )

    async def _mock_operation(self, done, name, error_code, error_message):
        operation = mock.MagicMock()
        operation.done = done
        operation.name = name
        operation.error = mock.MagicMock()
        operation.error.message = error_message
        operation.error.code = error_code
        return operation
