import gzip
import logging
from operator import itemgetter

import pytest

from pyinfra.exceptions import ProcessingFailure
from pyinfra.queue.consumer import Consumer
from pyinfra.visitor import get_object_descriptor, ForwardingStrategy

logger = logging.getLogger()


@pytest.fixture(scope="session")
def consumer(queue_manager, callback):
    return Consumer(callback, queue_manager)


@pytest.fixture(scope="session")
def access_callback():
    return itemgetter("fileId")


@pytest.fixture()
def items():
    def inner():
        for i in range(3):
            body = {
                "dossierId": "folder",
                "fileId": f"file{i}",
                "targetFileExtension": "in.gz",
                "responseFileExtension": "out.gz",
            }
            yield f"{i}".encode(), body

    return list(inner())


class TestConsumer:
    @pytest.mark.parametrize("queue_manager_name", ["mock", "pika"], scope="session")
    def test_consuming_empty_input_queue_does_not_put_anything_on_output_queue(self, consumer, queue_manager):
        queue_manager.clear()
        consumer.consume()
        assert queue_manager.output_queue.empty()

    @pytest.mark.parametrize("queue_manager_name", ["mock", "pika"], scope="session")
    def test_consuming_nonempty_input_queue_puts_messages_on_output_queue_in_fifo_order(
        self, consumer, queue_manager, callback
    ):
        def produce_items():
            return map(str, range(3))

        def mock_visitor(callback):
            def inner(data):
                return callback({"data": data.encode()})

            return inner

        callback = mock_visitor(callback)

        queue_manager.clear()

        for item in produce_items():
            queue_manager.publish_request(item)

        requests = consumer.consume()

        for _, r in zip(produce_items(), requests):
            queue_manager.publish_response(r, callback)

        assert queue_manager.output_queue.to_list() == ["00", "11", "22"]

    @pytest.mark.parametrize("queue_manager_name", ["mock", "pika"], scope="session")
    @pytest.mark.parametrize("client_name", ["mock", "s3", "azure"], scope="session")
    @pytest.mark.parametrize("response_strategy_name", ["forwarding", "storage"], scope="session")
    def test_consuming_nonempty_input_queue_with_visitor_puts_messages_on_output_queue_in_fifo_order(
        self, consumer, queue_manager, visitor, bucket_name, storage, items
    ):

        visitor.response_strategy = ForwardingStrategy()

        queue_manager.clear()
        storage.clear_bucket(bucket_name)

        for data, message in items:
            storage.put_object(**get_object_descriptor(message), data=gzip.compress(data))
            queue_manager.publish_request(message)

        requests = consumer.consume(inactivity_timeout=5)

        for itm, req in zip(items, requests):
            logger.debug(f"Processing item {itm}")
            queue_manager.publish_response(req, visitor)

        assert list(map(itemgetter("data"), queue_manager.output_queue.to_list())) == ["00", "11", "22"]

    @pytest.mark.parametrize("queue_manager_name", ["pika"], scope="session")
    def test_message_is_republished_when_callback_raises_processing_failure_exception(
        self, consumer, queue_manager, bucket_name, items
    ):
        class DebugError(Exception):
            pass

        def callback(_):
            raise ProcessingFailure()

        def reject_patch(*args, **kwargs):
            raise DebugError()

        queue_manager.reject = reject_patch

        queue_manager.clear()

        for data, message in items:
            queue_manager.publish_request(message)

        requests = consumer.consume()

        logger = logging.getLogger("pyinfra.queue.queue_manager.pika_queue_manager")
        logger.addFilter(lambda record: False)

        with pytest.raises(DebugError):
            while True:
                queue_manager.publish_response(next(requests), callback)