import logging
import subprocess

import pytest
import yaml
from freezegun import freeze_time

from datahub.configuration.common import ConfigurationError
from datahub.ingestion.api.source import SourceCapability
from datahub.ingestion.run.pipeline import Pipeline
from datahub.ingestion.source.kafka.kafka import KafkaSource, KafkaSourceConfig
from datahub.testing import mce_helpers
from tests.integration.kafka import oauth  # type: ignore
from tests.test_helpers import test_connection_helpers
from tests.test_helpers.click_helpers import run_datahub_cmd
from tests.test_helpers.docker_helpers import wait_for_port

FROZEN_TIME = "2020-04-14 07:00:00"


@pytest.fixture(scope="module")
def test_resources_dir(pytestconfig):
    return pytestconfig.rootpath / "tests/integration/kafka"


@pytest.fixture(scope="module")
def mock_kafka_service(docker_compose_runner, test_resources_dir):
    with docker_compose_runner(
        test_resources_dir / "docker-compose.yml", "kafka"
    ) as docker_services:
        wait_for_port(docker_services, "test_zookeeper", 52181, timeout=180)
        wait_for_port(docker_services, "test_broker", 29092, timeout=180)
        wait_for_port(docker_services, "test_schema_registry", 8081, timeout=180)

        # Set up topics and produce some data
        command = f"{test_resources_dir}/send_records.sh {test_resources_dir}"
        subprocess.run(command, shell=True, check=True)

        yield docker_compose_runner


@pytest.mark.parametrize("approach", ["kafka_without_schemas", "kafka"])
@freeze_time(FROZEN_TIME)
@pytest.mark.integration
def test_kafka_ingest(
    mock_kafka_service, test_resources_dir, pytestconfig, tmp_path, mock_time, approach
):
    # Run the metadata ingestion pipeline.
    config_file = (test_resources_dir / f"{approach}_to_file.yml").resolve()
    run_datahub_cmd(["ingest", "-c", f"{config_file}"], tmp_path=tmp_path)

    # Verify the output.
    mce_helpers.check_golden_file(
        pytestconfig,
        output_path=tmp_path / f"{approach}_mces.json",
        golden_path=test_resources_dir / f"{approach}_mces_golden.json",
        ignore_paths=[],
    )


@pytest.mark.parametrize(
    "config_dict, is_success",
    [
        (
            {
                "connection": {
                    "bootstrap": "localhost:29092",
                    "schema_registry_url": "http://localhost:28081",
                },
            },
            True,
        ),
        (
            {
                "connection": {
                    "bootstrap": "localhost:2909",
                    "schema_registry_url": "http://localhost:2808",
                },
            },
            False,
        ),
    ],
)
@pytest.mark.integration
@freeze_time(FROZEN_TIME)
def test_kafka_test_connection(mock_kafka_service, config_dict, is_success):
    report = test_connection_helpers.run_test_connection(KafkaSource, config_dict)
    if is_success:
        test_connection_helpers.assert_basic_connectivity_success(report)
        test_connection_helpers.assert_capability_report(
            capability_report=report.capability_report,
            success_capabilities=[SourceCapability.SCHEMA_METADATA],
        )
    else:
        test_connection_helpers.assert_basic_connectivity_failure(
            report, "Failed to get metadata"
        )
        test_connection_helpers.assert_capability_report(
            capability_report=report.capability_report,
            failure_capabilities={
                SourceCapability.SCHEMA_METADATA: "[Errno 111] Connection refused"
            },
        )


@freeze_time(FROZEN_TIME)
@pytest.mark.integration
def test_kafka_oauth_callback(
    mock_kafka_service, test_resources_dir, pytestconfig, tmp_path, mock_time
):
    # Run the metadata ingestion pipeline.
    config_file = (test_resources_dir / "kafka_to_file_oauth.yml").resolve()

    log_file = tmp_path / "kafka_oauth_message.log"

    file_handler = logging.FileHandler(
        str(log_file)
    )  # Add a file handler to later validate a test-case
    logging.getLogger().addHandler(file_handler)

    recipe: dict = {}
    with open(config_file) as fp:
        recipe = yaml.safe_load(fp)

    pipeline = Pipeline.create(recipe)

    pipeline.run()

    # Initialize flags to track oauth events
    checks = {
        "consumer_polling": False,
        "consumer_oauth_callback": False,
        "admin_polling": False,
        "admin_oauth_callback": False,
    }

    # Read log file and check for oauth events
    with open(log_file, "r") as file:
        for line in file:
            # Check for polling events
            if "Initiating polling for kafka admin client" in line:
                checks["admin_polling"] = True
            elif "Initiating polling for kafka consumer" in line:
                checks["consumer_polling"] = True

            # Check for oauth callbacks
            if oauth.MESSAGE in line:
                if checks["consumer_polling"] and not checks["admin_polling"]:
                    checks["consumer_oauth_callback"] = True
                elif checks["consumer_polling"] and checks["admin_polling"]:
                    checks["admin_oauth_callback"] = True

    # Verify all oauth events occurred
    assert checks["consumer_polling"], "Consumer polling was not initiated"
    assert checks["consumer_oauth_callback"], "Consumer oauth callback not found"
    assert checks["admin_polling"], "Admin polling was not initiated"
    assert checks["admin_oauth_callback"], "Admin oauth callback not found"


def test_kafka_source_oauth_cb_signature():
    with pytest.raises(
        ConfigurationError,
        match=("oauth_cb function must accept single positional argument."),
    ):
        KafkaSourceConfig.parse_obj(
            {
                "connection": {
                    "bootstrap": "foobar:9092",
                    "consumer_config": {"oauth_cb": "oauth:create_token_no_args"},
                }
            }
        )

    with pytest.raises(
        ConfigurationError,
        match=("oauth_cb function must accept single positional argument."),
    ):
        KafkaSourceConfig.parse_obj(
            {
                "connection": {
                    "bootstrap": "foobar:9092",
                    "consumer_config": {"oauth_cb": "oauth:create_token_only_kwargs"},
                }
            }
        )